mirror of https://github.com/knative/pkg.git
Update to the 1.11 client libraries. (#38)
This commit is contained in:
parent
a088fee622
commit
3b51a7246c
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@ -35,6 +35,12 @@
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]
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revision = "1643683e1b54a9e88ad26d98f81400c8c9d9f4f9"
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[[projects]]
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branch = "master"
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name = "github.com/google/btree"
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packages = ["."]
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revision = "e89373fe6b4a7413d7acd6da1725b83ef713e6e4"
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[[projects]]
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name = "github.com/google/go-cmp"
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packages = [
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@ -61,6 +67,15 @@
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]
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revision = "0c5108395e2debce0d731cf0287ddf7242066aba"
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[[projects]]
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branch = "master"
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name = "github.com/gregjones/httpcache"
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packages = [
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".",
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"diskcache"
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]
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revision = "9cad4c3443a7200dd6400aef47183728de563a38"
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[[projects]]
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name = "github.com/hashicorp/golang-lru"
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packages = [
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@ -72,8 +87,7 @@
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[[projects]]
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name = "github.com/json-iterator/go"
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packages = ["."]
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revision = "0ac74bba4a81211b28e32ef260c0f16ae41f1377"
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version = "1.1.1"
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revision = "f2b4162afba35581b6d4a50d3b8f34e33c144682"
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[[projects]]
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branch = "master"
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@ -81,21 +95,36 @@
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packages = ["."]
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revision = "81af80346b1a01caae0cbc27fd3c1ba5b11e189f"
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[[projects]]
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name = "github.com/modern-go/concurrent"
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packages = ["."]
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revision = "bacd9c7ef1dd9b15be4a9909b8ac7a4e313eec94"
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version = "1.0.3"
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[[projects]]
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name = "github.com/modern-go/reflect2"
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packages = ["."]
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revision = "4b7aa43c6742a2c18fdef89dd197aaae7dac7ccd"
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version = "1.0.1"
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[[projects]]
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branch = "master"
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name = "github.com/petar/GoLLRB"
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packages = ["llrb"]
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revision = "53be0d36a84c2a886ca057d34b6aa4468df9ccb4"
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[[projects]]
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name = "github.com/peterbourgon/diskv"
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packages = ["."]
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revision = "5f041e8faa004a95c88a202771f4cc3e991971e6"
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version = "v2.0.1"
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[[projects]]
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name = "github.com/spf13/pflag"
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packages = ["."]
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revision = "583c0c0531f06d5278b7d917446061adc344b5cd"
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version = "v1.0.1"
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[[projects]]
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name = "github.com/v2pro/plz"
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packages = [
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"concurrent",
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"reflect2"
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]
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revision = "10fc95fad3224a032229e59f6e7023137d82b526"
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version = "0.9.1"
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[[projects]]
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name = "go.uber.org/atomic"
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packages = ["."]
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@ -228,22 +257,22 @@
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"rbac/v1alpha1",
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"rbac/v1beta1",
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"scheduling/v1alpha1",
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"scheduling/v1beta1",
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"settings/v1alpha1",
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"storage/v1",
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"storage/v1alpha1",
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"storage/v1beta1"
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]
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revision = "73d903622b7391f3312dcbac6483fed484e185f8"
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version = "kubernetes-1.10.0"
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revision = "072894a440bdee3a891dea811fe42902311cd2a3"
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version = "kubernetes-1.11.0"
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[[projects]]
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branch = "release-1.11"
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name = "k8s.io/apimachinery"
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packages = [
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"pkg/api/errors",
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"pkg/api/meta",
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"pkg/api/resource",
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"pkg/apimachinery",
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"pkg/apimachinery/registered",
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"pkg/apis/meta/internalversion",
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"pkg/apis/meta/v1",
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"pkg/apis/meta/v1/unstructured",
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@ -269,20 +298,22 @@
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"pkg/util/framer",
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"pkg/util/intstr",
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"pkg/util/json",
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"pkg/util/mergepatch",
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"pkg/util/net",
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"pkg/util/runtime",
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"pkg/util/sets",
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"pkg/util/sets/types",
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"pkg/util/strategicpatch",
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"pkg/util/validation",
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"pkg/util/validation/field",
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"pkg/util/wait",
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"pkg/util/yaml",
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"pkg/version",
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"pkg/watch",
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"third_party/forked/golang/json",
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"third_party/forked/golang/reflect"
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]
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revision = "302974c03f7e50f16561ba237db776ab93594ef6"
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version = "kubernetes-1.10.0"
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revision = "103fd098999dc9c0c88536f5c9ad2e5da39373ae"
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[[projects]]
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name = "k8s.io/client-go"
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@ -323,6 +354,7 @@
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"informers/rbac/v1beta1",
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"informers/scheduling",
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"informers/scheduling/v1alpha1",
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"informers/scheduling/v1beta1",
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"informers/settings",
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"informers/settings/v1alpha1",
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"informers/storage",
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@ -380,6 +412,8 @@
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"kubernetes/typed/rbac/v1beta1/fake",
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"kubernetes/typed/scheduling/v1alpha1",
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"kubernetes/typed/scheduling/v1alpha1/fake",
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"kubernetes/typed/scheduling/v1beta1",
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"kubernetes/typed/scheduling/v1beta1/fake",
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"kubernetes/typed/settings/v1alpha1",
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"kubernetes/typed/settings/v1alpha1/fake",
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"kubernetes/typed/storage/v1",
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@ -408,12 +442,14 @@
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"listers/rbac/v1alpha1",
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"listers/rbac/v1beta1",
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"listers/scheduling/v1alpha1",
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"listers/scheduling/v1beta1",
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"listers/settings/v1alpha1",
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"listers/storage/v1",
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"listers/storage/v1alpha1",
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"listers/storage/v1beta1",
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"pkg/apis/clientauthentication",
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"pkg/apis/clientauthentication/v1alpha1",
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"pkg/apis/clientauthentication/v1beta1",
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"pkg/version",
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"plugin/pkg/client/auth/exec",
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"rest",
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@ -427,15 +463,17 @@
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"transport",
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"util/buffer",
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"util/cert",
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"util/connrotation",
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"util/flowcontrol",
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"util/integer",
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"util/retry",
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"util/workqueue"
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]
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revision = "23781f4d6632d88e869066eaebb743857aa1ef9b"
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version = "v7.0.0"
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revision = "7d04d0e2a0a1a4d4a1cd6baa432a2301492e4e65"
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version = "v8.0.0"
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[[projects]]
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branch = "release-1.11"
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name = "k8s.io/code-generator"
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packages = [
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"cmd/client-gen",
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@ -458,8 +496,7 @@
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"cmd/lister-gen/generators",
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"pkg/util"
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]
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revision = "7ead8f38b01cf8653249f5af80ce7b2c8aba12e2"
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version = "kubernetes-1.10.0"
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revision = "6702109cc68eb6fe6350b83e14407c8d7309fd1a"
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[[projects]]
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branch = "master"
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@ -476,9 +513,15 @@
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]
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revision = "906d99f89cd644eecf75ab547b29bf9f876f0b59"
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[[projects]]
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branch = "master"
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name = "k8s.io/kube-openapi"
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packages = ["pkg/util/proto"]
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revision = "e3762e86a74c878ffed47484592986685639c2cd"
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[solve-meta]
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analyzer-name = "dep"
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analyzer-version = 1
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inputs-digest = "2ece3158a3270f47b93822039898e624dc93503f8689981ccd062245438c76b9"
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inputs-digest = "3e50d0bf04aa4624f88f80e450fbba4f666e1e976d289019f077bfb58f8e3385"
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solver-name = "gps-cdcl"
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solver-version = 1
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|
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15
Gopkg.toml
15
Gopkg.toml
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@ -3,7 +3,6 @@
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required = [
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"k8s.io/apimachinery/pkg/util/sets/types",
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"k8s.io/apimachinery/pkg/apimachinery/registered",
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"k8s.io/code-generator/cmd/deepcopy-gen",
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"k8s.io/code-generator/cmd/defaulter-gen",
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"k8s.io/code-generator/cmd/client-gen",
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|
@ -13,19 +12,25 @@ required = [
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[[constraint]]
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name = "k8s.io/api"
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version = "kubernetes-1.10.0"
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version = "kubernetes-1.11.0"
|
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|
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[[constraint]]
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name = "k8s.io/apimachinery"
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version = "kubernetes-1.10.0"
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version = "kubernetes-1.11.0"
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[[constraint]]
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name = "k8s.io/client-go"
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version = "kubernetes-1.10.0"
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version = "kubernetes-1.11.0"
|
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|
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[[constraint]]
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name = "k8s.io/code-generator"
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version = "kubernetes-1.10.0"
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version = "kubernetes-1.11.0"
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[[override]]
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name = "github.com/json-iterator/go"
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# This is the commit at which k8s depends on this in 1.11
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# It seems to be broken at HEAD.
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revision = "f2b4162afba35581b6d4a50d3b8f34e33c144682"
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[prune]
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go-tests = true
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|
|
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@ -19,7 +19,6 @@ limitations under the License.
|
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package versioned
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import (
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glog "github.com/golang/glog"
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networkingv1alpha3 "github.com/knative/pkg/client/clientset/versioned/typed/istio/v1alpha3"
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discovery "k8s.io/client-go/discovery"
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rest "k8s.io/client-go/rest"
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|
@ -74,7 +73,6 @@ func NewForConfig(c *rest.Config) (*Clientset, error) {
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|||
|
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cs.DiscoveryClient, err = discovery.NewDiscoveryClientForConfig(&configShallowCopy)
|
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if err != nil {
|
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glog.Errorf("failed to create the DiscoveryClient: %v", err)
|
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return nil, err
|
||||
}
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return &cs, nil
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|
|
|
@ -41,9 +41,10 @@ func NewSimpleClientset(objects ...runtime.Object) *Clientset {
|
|||
}
|
||||
}
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|
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fakePtr := testing.Fake{}
|
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fakePtr.AddReactor("*", "*", testing.ObjectReaction(o))
|
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fakePtr.AddWatchReactor("*", func(action testing.Action) (handled bool, ret watch.Interface, err error) {
|
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cs := &Clientset{}
|
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cs.discovery = &fakediscovery.FakeDiscovery{Fake: &cs.Fake}
|
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cs.AddReactor("*", "*", testing.ObjectReaction(o))
|
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cs.AddWatchReactor("*", func(action testing.Action) (handled bool, ret watch.Interface, err error) {
|
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gvr := action.GetResource()
|
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ns := action.GetNamespace()
|
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watch, err := o.Watch(gvr, ns)
|
||||
|
@ -53,7 +54,7 @@ func NewSimpleClientset(objects ...runtime.Object) *Clientset {
|
|||
return true, watch, nil
|
||||
})
|
||||
|
||||
return &Clientset{fakePtr, &fakediscovery.FakeDiscovery{Fake: &fakePtr}}
|
||||
return cs
|
||||
}
|
||||
|
||||
// Clientset implements clientset.Interface. Meant to be embedded into a
|
||||
|
|
|
@ -62,7 +62,7 @@ func (c *FakeGateways) List(opts v1.ListOptions) (result *v1alpha3.GatewayList,
|
|||
if label == nil {
|
||||
label = labels.Everything()
|
||||
}
|
||||
list := &v1alpha3.GatewayList{}
|
||||
list := &v1alpha3.GatewayList{ListMeta: obj.(*v1alpha3.GatewayList).ListMeta}
|
||||
for _, item := range obj.(*v1alpha3.GatewayList).Items {
|
||||
if label.Matches(labels.Set(item.Labels)) {
|
||||
list.Items = append(list.Items, item)
|
||||
|
|
|
@ -62,7 +62,7 @@ func (c *FakeVirtualServices) List(opts v1.ListOptions) (result *v1alpha3.Virtua
|
|||
if label == nil {
|
||||
label = labels.Everything()
|
||||
}
|
||||
list := &v1alpha3.VirtualServiceList{}
|
||||
list := &v1alpha3.VirtualServiceList{ListMeta: obj.(*v1alpha3.VirtualServiceList).ListMeta}
|
||||
for _, item := range obj.(*v1alpha3.VirtualServiceList).Items {
|
||||
if label.Matches(labels.Set(item.Labels)) {
|
||||
list.Items = append(list.Items, item)
|
||||
|
|
|
@ -32,12 +32,16 @@ import (
|
|||
cache "k8s.io/client-go/tools/cache"
|
||||
)
|
||||
|
||||
// SharedInformerOption defines the functional option type for SharedInformerFactory.
|
||||
type SharedInformerOption func(*sharedInformerFactory) *sharedInformerFactory
|
||||
|
||||
type sharedInformerFactory struct {
|
||||
client versioned.Interface
|
||||
namespace string
|
||||
tweakListOptions internalinterfaces.TweakListOptionsFunc
|
||||
lock sync.Mutex
|
||||
defaultResync time.Duration
|
||||
customResync map[reflect.Type]time.Duration
|
||||
|
||||
informers map[reflect.Type]cache.SharedIndexInformer
|
||||
// startedInformers is used for tracking which informers have been started.
|
||||
|
@ -45,23 +49,62 @@ type sharedInformerFactory struct {
|
|||
startedInformers map[reflect.Type]bool
|
||||
}
|
||||
|
||||
// NewSharedInformerFactory constructs a new instance of sharedInformerFactory
|
||||
// WithCustomResyncConfig sets a custom resync period for the specified informer types.
|
||||
func WithCustomResyncConfig(resyncConfig map[v1.Object]time.Duration) SharedInformerOption {
|
||||
return func(factory *sharedInformerFactory) *sharedInformerFactory {
|
||||
for k, v := range resyncConfig {
|
||||
factory.customResync[reflect.TypeOf(k)] = v
|
||||
}
|
||||
return factory
|
||||
}
|
||||
}
|
||||
|
||||
// WithTweakListOptions sets a custom filter on all listers of the configured SharedInformerFactory.
|
||||
func WithTweakListOptions(tweakListOptions internalinterfaces.TweakListOptionsFunc) SharedInformerOption {
|
||||
return func(factory *sharedInformerFactory) *sharedInformerFactory {
|
||||
factory.tweakListOptions = tweakListOptions
|
||||
return factory
|
||||
}
|
||||
}
|
||||
|
||||
// WithNamespace limits the SharedInformerFactory to the specified namespace.
|
||||
func WithNamespace(namespace string) SharedInformerOption {
|
||||
return func(factory *sharedInformerFactory) *sharedInformerFactory {
|
||||
factory.namespace = namespace
|
||||
return factory
|
||||
}
|
||||
}
|
||||
|
||||
// NewSharedInformerFactory constructs a new instance of sharedInformerFactory for all namespaces.
|
||||
func NewSharedInformerFactory(client versioned.Interface, defaultResync time.Duration) SharedInformerFactory {
|
||||
return NewFilteredSharedInformerFactory(client, defaultResync, v1.NamespaceAll, nil)
|
||||
return NewSharedInformerFactoryWithOptions(client, defaultResync)
|
||||
}
|
||||
|
||||
// NewFilteredSharedInformerFactory constructs a new instance of sharedInformerFactory.
|
||||
// Listers obtained via this SharedInformerFactory will be subject to the same filters
|
||||
// as specified here.
|
||||
// Deprecated: Please use NewSharedInformerFactoryWithOptions instead
|
||||
func NewFilteredSharedInformerFactory(client versioned.Interface, defaultResync time.Duration, namespace string, tweakListOptions internalinterfaces.TweakListOptionsFunc) SharedInformerFactory {
|
||||
return &sharedInformerFactory{
|
||||
return NewSharedInformerFactoryWithOptions(client, defaultResync, WithNamespace(namespace), WithTweakListOptions(tweakListOptions))
|
||||
}
|
||||
|
||||
// NewSharedInformerFactoryWithOptions constructs a new instance of a SharedInformerFactory with additional options.
|
||||
func NewSharedInformerFactoryWithOptions(client versioned.Interface, defaultResync time.Duration, options ...SharedInformerOption) SharedInformerFactory {
|
||||
factory := &sharedInformerFactory{
|
||||
client: client,
|
||||
namespace: namespace,
|
||||
tweakListOptions: tweakListOptions,
|
||||
namespace: v1.NamespaceAll,
|
||||
defaultResync: defaultResync,
|
||||
informers: make(map[reflect.Type]cache.SharedIndexInformer),
|
||||
startedInformers: make(map[reflect.Type]bool),
|
||||
customResync: make(map[reflect.Type]time.Duration),
|
||||
}
|
||||
|
||||
// Apply all options
|
||||
for _, opt := range options {
|
||||
factory = opt(factory)
|
||||
}
|
||||
|
||||
return factory
|
||||
}
|
||||
|
||||
// Start initializes all requested informers.
|
||||
|
@ -110,7 +153,13 @@ func (f *sharedInformerFactory) InformerFor(obj runtime.Object, newFunc internal
|
|||
if exists {
|
||||
return informer
|
||||
}
|
||||
informer = newFunc(f.client, f.defaultResync)
|
||||
|
||||
resyncPeriod, exists := f.customResync[informerType]
|
||||
if !exists {
|
||||
resyncPeriod = f.defaultResync
|
||||
}
|
||||
|
||||
informer = newFunc(f.client, resyncPeriod)
|
||||
f.informers[informerType] = informer
|
||||
|
||||
return informer
|
||||
|
|
|
@ -0,0 +1,202 @@
|
|||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
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|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
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|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
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|
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|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
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|
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||||
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|
||||
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|
||||
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APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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|
@ -0,0 +1,881 @@
|
|||
// Copyright 2014 Google Inc.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package btree implements in-memory B-Trees of arbitrary degree.
|
||||
//
|
||||
// btree implements an in-memory B-Tree for use as an ordered data structure.
|
||||
// It is not meant for persistent storage solutions.
|
||||
//
|
||||
// It has a flatter structure than an equivalent red-black or other binary tree,
|
||||
// which in some cases yields better memory usage and/or performance.
|
||||
// See some discussion on the matter here:
|
||||
// http://google-opensource.blogspot.com/2013/01/c-containers-that-save-memory-and-time.html
|
||||
// Note, though, that this project is in no way related to the C++ B-Tree
|
||||
// implementation written about there.
|
||||
//
|
||||
// Within this tree, each node contains a slice of items and a (possibly nil)
|
||||
// slice of children. For basic numeric values or raw structs, this can cause
|
||||
// efficiency differences when compared to equivalent C++ template code that
|
||||
// stores values in arrays within the node:
|
||||
// * Due to the overhead of storing values as interfaces (each
|
||||
// value needs to be stored as the value itself, then 2 words for the
|
||||
// interface pointing to that value and its type), resulting in higher
|
||||
// memory use.
|
||||
// * Since interfaces can point to values anywhere in memory, values are
|
||||
// most likely not stored in contiguous blocks, resulting in a higher
|
||||
// number of cache misses.
|
||||
// These issues don't tend to matter, though, when working with strings or other
|
||||
// heap-allocated structures, since C++-equivalent structures also must store
|
||||
// pointers and also distribute their values across the heap.
|
||||
//
|
||||
// This implementation is designed to be a drop-in replacement to gollrb.LLRB
|
||||
// trees, (http://github.com/petar/gollrb), an excellent and probably the most
|
||||
// widely used ordered tree implementation in the Go ecosystem currently.
|
||||
// Its functions, therefore, exactly mirror those of
|
||||
// llrb.LLRB where possible. Unlike gollrb, though, we currently don't
|
||||
// support storing multiple equivalent values.
|
||||
package btree
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"sort"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
// Item represents a single object in the tree.
|
||||
type Item interface {
|
||||
// Less tests whether the current item is less than the given argument.
|
||||
//
|
||||
// This must provide a strict weak ordering.
|
||||
// If !a.Less(b) && !b.Less(a), we treat this to mean a == b (i.e. we can only
|
||||
// hold one of either a or b in the tree).
|
||||
Less(than Item) bool
|
||||
}
|
||||
|
||||
const (
|
||||
DefaultFreeListSize = 32
|
||||
)
|
||||
|
||||
var (
|
||||
nilItems = make(items, 16)
|
||||
nilChildren = make(children, 16)
|
||||
)
|
||||
|
||||
// FreeList represents a free list of btree nodes. By default each
|
||||
// BTree has its own FreeList, but multiple BTrees can share the same
|
||||
// FreeList.
|
||||
// Two Btrees using the same freelist are safe for concurrent write access.
|
||||
type FreeList struct {
|
||||
mu sync.Mutex
|
||||
freelist []*node
|
||||
}
|
||||
|
||||
// NewFreeList creates a new free list.
|
||||
// size is the maximum size of the returned free list.
|
||||
func NewFreeList(size int) *FreeList {
|
||||
return &FreeList{freelist: make([]*node, 0, size)}
|
||||
}
|
||||
|
||||
func (f *FreeList) newNode() (n *node) {
|
||||
f.mu.Lock()
|
||||
index := len(f.freelist) - 1
|
||||
if index < 0 {
|
||||
f.mu.Unlock()
|
||||
return new(node)
|
||||
}
|
||||
n = f.freelist[index]
|
||||
f.freelist[index] = nil
|
||||
f.freelist = f.freelist[:index]
|
||||
f.mu.Unlock()
|
||||
return
|
||||
}
|
||||
|
||||
// freeNode adds the given node to the list, returning true if it was added
|
||||
// and false if it was discarded.
|
||||
func (f *FreeList) freeNode(n *node) (out bool) {
|
||||
f.mu.Lock()
|
||||
if len(f.freelist) < cap(f.freelist) {
|
||||
f.freelist = append(f.freelist, n)
|
||||
out = true
|
||||
}
|
||||
f.mu.Unlock()
|
||||
return
|
||||
}
|
||||
|
||||
// ItemIterator allows callers of Ascend* to iterate in-order over portions of
|
||||
// the tree. When this function returns false, iteration will stop and the
|
||||
// associated Ascend* function will immediately return.
|
||||
type ItemIterator func(i Item) bool
|
||||
|
||||
// New creates a new B-Tree with the given degree.
|
||||
//
|
||||
// New(2), for example, will create a 2-3-4 tree (each node contains 1-3 items
|
||||
// and 2-4 children).
|
||||
func New(degree int) *BTree {
|
||||
return NewWithFreeList(degree, NewFreeList(DefaultFreeListSize))
|
||||
}
|
||||
|
||||
// NewWithFreeList creates a new B-Tree that uses the given node free list.
|
||||
func NewWithFreeList(degree int, f *FreeList) *BTree {
|
||||
if degree <= 1 {
|
||||
panic("bad degree")
|
||||
}
|
||||
return &BTree{
|
||||
degree: degree,
|
||||
cow: ©OnWriteContext{freelist: f},
|
||||
}
|
||||
}
|
||||
|
||||
// items stores items in a node.
|
||||
type items []Item
|
||||
|
||||
// insertAt inserts a value into the given index, pushing all subsequent values
|
||||
// forward.
|
||||
func (s *items) insertAt(index int, item Item) {
|
||||
*s = append(*s, nil)
|
||||
if index < len(*s) {
|
||||
copy((*s)[index+1:], (*s)[index:])
|
||||
}
|
||||
(*s)[index] = item
|
||||
}
|
||||
|
||||
// removeAt removes a value at a given index, pulling all subsequent values
|
||||
// back.
|
||||
func (s *items) removeAt(index int) Item {
|
||||
item := (*s)[index]
|
||||
copy((*s)[index:], (*s)[index+1:])
|
||||
(*s)[len(*s)-1] = nil
|
||||
*s = (*s)[:len(*s)-1]
|
||||
return item
|
||||
}
|
||||
|
||||
// pop removes and returns the last element in the list.
|
||||
func (s *items) pop() (out Item) {
|
||||
index := len(*s) - 1
|
||||
out = (*s)[index]
|
||||
(*s)[index] = nil
|
||||
*s = (*s)[:index]
|
||||
return
|
||||
}
|
||||
|
||||
// truncate truncates this instance at index so that it contains only the
|
||||
// first index items. index must be less than or equal to length.
|
||||
func (s *items) truncate(index int) {
|
||||
var toClear items
|
||||
*s, toClear = (*s)[:index], (*s)[index:]
|
||||
for len(toClear) > 0 {
|
||||
toClear = toClear[copy(toClear, nilItems):]
|
||||
}
|
||||
}
|
||||
|
||||
// find returns the index where the given item should be inserted into this
|
||||
// list. 'found' is true if the item already exists in the list at the given
|
||||
// index.
|
||||
func (s items) find(item Item) (index int, found bool) {
|
||||
i := sort.Search(len(s), func(i int) bool {
|
||||
return item.Less(s[i])
|
||||
})
|
||||
if i > 0 && !s[i-1].Less(item) {
|
||||
return i - 1, true
|
||||
}
|
||||
return i, false
|
||||
}
|
||||
|
||||
// children stores child nodes in a node.
|
||||
type children []*node
|
||||
|
||||
// insertAt inserts a value into the given index, pushing all subsequent values
|
||||
// forward.
|
||||
func (s *children) insertAt(index int, n *node) {
|
||||
*s = append(*s, nil)
|
||||
if index < len(*s) {
|
||||
copy((*s)[index+1:], (*s)[index:])
|
||||
}
|
||||
(*s)[index] = n
|
||||
}
|
||||
|
||||
// removeAt removes a value at a given index, pulling all subsequent values
|
||||
// back.
|
||||
func (s *children) removeAt(index int) *node {
|
||||
n := (*s)[index]
|
||||
copy((*s)[index:], (*s)[index+1:])
|
||||
(*s)[len(*s)-1] = nil
|
||||
*s = (*s)[:len(*s)-1]
|
||||
return n
|
||||
}
|
||||
|
||||
// pop removes and returns the last element in the list.
|
||||
func (s *children) pop() (out *node) {
|
||||
index := len(*s) - 1
|
||||
out = (*s)[index]
|
||||
(*s)[index] = nil
|
||||
*s = (*s)[:index]
|
||||
return
|
||||
}
|
||||
|
||||
// truncate truncates this instance at index so that it contains only the
|
||||
// first index children. index must be less than or equal to length.
|
||||
func (s *children) truncate(index int) {
|
||||
var toClear children
|
||||
*s, toClear = (*s)[:index], (*s)[index:]
|
||||
for len(toClear) > 0 {
|
||||
toClear = toClear[copy(toClear, nilChildren):]
|
||||
}
|
||||
}
|
||||
|
||||
// node is an internal node in a tree.
|
||||
//
|
||||
// It must at all times maintain the invariant that either
|
||||
// * len(children) == 0, len(items) unconstrained
|
||||
// * len(children) == len(items) + 1
|
||||
type node struct {
|
||||
items items
|
||||
children children
|
||||
cow *copyOnWriteContext
|
||||
}
|
||||
|
||||
func (n *node) mutableFor(cow *copyOnWriteContext) *node {
|
||||
if n.cow == cow {
|
||||
return n
|
||||
}
|
||||
out := cow.newNode()
|
||||
if cap(out.items) >= len(n.items) {
|
||||
out.items = out.items[:len(n.items)]
|
||||
} else {
|
||||
out.items = make(items, len(n.items), cap(n.items))
|
||||
}
|
||||
copy(out.items, n.items)
|
||||
// Copy children
|
||||
if cap(out.children) >= len(n.children) {
|
||||
out.children = out.children[:len(n.children)]
|
||||
} else {
|
||||
out.children = make(children, len(n.children), cap(n.children))
|
||||
}
|
||||
copy(out.children, n.children)
|
||||
return out
|
||||
}
|
||||
|
||||
func (n *node) mutableChild(i int) *node {
|
||||
c := n.children[i].mutableFor(n.cow)
|
||||
n.children[i] = c
|
||||
return c
|
||||
}
|
||||
|
||||
// split splits the given node at the given index. The current node shrinks,
|
||||
// and this function returns the item that existed at that index and a new node
|
||||
// containing all items/children after it.
|
||||
func (n *node) split(i int) (Item, *node) {
|
||||
item := n.items[i]
|
||||
next := n.cow.newNode()
|
||||
next.items = append(next.items, n.items[i+1:]...)
|
||||
n.items.truncate(i)
|
||||
if len(n.children) > 0 {
|
||||
next.children = append(next.children, n.children[i+1:]...)
|
||||
n.children.truncate(i + 1)
|
||||
}
|
||||
return item, next
|
||||
}
|
||||
|
||||
// maybeSplitChild checks if a child should be split, and if so splits it.
|
||||
// Returns whether or not a split occurred.
|
||||
func (n *node) maybeSplitChild(i, maxItems int) bool {
|
||||
if len(n.children[i].items) < maxItems {
|
||||
return false
|
||||
}
|
||||
first := n.mutableChild(i)
|
||||
item, second := first.split(maxItems / 2)
|
||||
n.items.insertAt(i, item)
|
||||
n.children.insertAt(i+1, second)
|
||||
return true
|
||||
}
|
||||
|
||||
// insert inserts an item into the subtree rooted at this node, making sure
|
||||
// no nodes in the subtree exceed maxItems items. Should an equivalent item be
|
||||
// be found/replaced by insert, it will be returned.
|
||||
func (n *node) insert(item Item, maxItems int) Item {
|
||||
i, found := n.items.find(item)
|
||||
if found {
|
||||
out := n.items[i]
|
||||
n.items[i] = item
|
||||
return out
|
||||
}
|
||||
if len(n.children) == 0 {
|
||||
n.items.insertAt(i, item)
|
||||
return nil
|
||||
}
|
||||
if n.maybeSplitChild(i, maxItems) {
|
||||
inTree := n.items[i]
|
||||
switch {
|
||||
case item.Less(inTree):
|
||||
// no change, we want first split node
|
||||
case inTree.Less(item):
|
||||
i++ // we want second split node
|
||||
default:
|
||||
out := n.items[i]
|
||||
n.items[i] = item
|
||||
return out
|
||||
}
|
||||
}
|
||||
return n.mutableChild(i).insert(item, maxItems)
|
||||
}
|
||||
|
||||
// get finds the given key in the subtree and returns it.
|
||||
func (n *node) get(key Item) Item {
|
||||
i, found := n.items.find(key)
|
||||
if found {
|
||||
return n.items[i]
|
||||
} else if len(n.children) > 0 {
|
||||
return n.children[i].get(key)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// min returns the first item in the subtree.
|
||||
func min(n *node) Item {
|
||||
if n == nil {
|
||||
return nil
|
||||
}
|
||||
for len(n.children) > 0 {
|
||||
n = n.children[0]
|
||||
}
|
||||
if len(n.items) == 0 {
|
||||
return nil
|
||||
}
|
||||
return n.items[0]
|
||||
}
|
||||
|
||||
// max returns the last item in the subtree.
|
||||
func max(n *node) Item {
|
||||
if n == nil {
|
||||
return nil
|
||||
}
|
||||
for len(n.children) > 0 {
|
||||
n = n.children[len(n.children)-1]
|
||||
}
|
||||
if len(n.items) == 0 {
|
||||
return nil
|
||||
}
|
||||
return n.items[len(n.items)-1]
|
||||
}
|
||||
|
||||
// toRemove details what item to remove in a node.remove call.
|
||||
type toRemove int
|
||||
|
||||
const (
|
||||
removeItem toRemove = iota // removes the given item
|
||||
removeMin // removes smallest item in the subtree
|
||||
removeMax // removes largest item in the subtree
|
||||
)
|
||||
|
||||
// remove removes an item from the subtree rooted at this node.
|
||||
func (n *node) remove(item Item, minItems int, typ toRemove) Item {
|
||||
var i int
|
||||
var found bool
|
||||
switch typ {
|
||||
case removeMax:
|
||||
if len(n.children) == 0 {
|
||||
return n.items.pop()
|
||||
}
|
||||
i = len(n.items)
|
||||
case removeMin:
|
||||
if len(n.children) == 0 {
|
||||
return n.items.removeAt(0)
|
||||
}
|
||||
i = 0
|
||||
case removeItem:
|
||||
i, found = n.items.find(item)
|
||||
if len(n.children) == 0 {
|
||||
if found {
|
||||
return n.items.removeAt(i)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
default:
|
||||
panic("invalid type")
|
||||
}
|
||||
// If we get to here, we have children.
|
||||
if len(n.children[i].items) <= minItems {
|
||||
return n.growChildAndRemove(i, item, minItems, typ)
|
||||
}
|
||||
child := n.mutableChild(i)
|
||||
// Either we had enough items to begin with, or we've done some
|
||||
// merging/stealing, because we've got enough now and we're ready to return
|
||||
// stuff.
|
||||
if found {
|
||||
// The item exists at index 'i', and the child we've selected can give us a
|
||||
// predecessor, since if we've gotten here it's got > minItems items in it.
|
||||
out := n.items[i]
|
||||
// We use our special-case 'remove' call with typ=maxItem to pull the
|
||||
// predecessor of item i (the rightmost leaf of our immediate left child)
|
||||
// and set it into where we pulled the item from.
|
||||
n.items[i] = child.remove(nil, minItems, removeMax)
|
||||
return out
|
||||
}
|
||||
// Final recursive call. Once we're here, we know that the item isn't in this
|
||||
// node and that the child is big enough to remove from.
|
||||
return child.remove(item, minItems, typ)
|
||||
}
|
||||
|
||||
// growChildAndRemove grows child 'i' to make sure it's possible to remove an
|
||||
// item from it while keeping it at minItems, then calls remove to actually
|
||||
// remove it.
|
||||
//
|
||||
// Most documentation says we have to do two sets of special casing:
|
||||
// 1) item is in this node
|
||||
// 2) item is in child
|
||||
// In both cases, we need to handle the two subcases:
|
||||
// A) node has enough values that it can spare one
|
||||
// B) node doesn't have enough values
|
||||
// For the latter, we have to check:
|
||||
// a) left sibling has node to spare
|
||||
// b) right sibling has node to spare
|
||||
// c) we must merge
|
||||
// To simplify our code here, we handle cases #1 and #2 the same:
|
||||
// If a node doesn't have enough items, we make sure it does (using a,b,c).
|
||||
// We then simply redo our remove call, and the second time (regardless of
|
||||
// whether we're in case 1 or 2), we'll have enough items and can guarantee
|
||||
// that we hit case A.
|
||||
func (n *node) growChildAndRemove(i int, item Item, minItems int, typ toRemove) Item {
|
||||
if i > 0 && len(n.children[i-1].items) > minItems {
|
||||
// Steal from left child
|
||||
child := n.mutableChild(i)
|
||||
stealFrom := n.mutableChild(i - 1)
|
||||
stolenItem := stealFrom.items.pop()
|
||||
child.items.insertAt(0, n.items[i-1])
|
||||
n.items[i-1] = stolenItem
|
||||
if len(stealFrom.children) > 0 {
|
||||
child.children.insertAt(0, stealFrom.children.pop())
|
||||
}
|
||||
} else if i < len(n.items) && len(n.children[i+1].items) > minItems {
|
||||
// steal from right child
|
||||
child := n.mutableChild(i)
|
||||
stealFrom := n.mutableChild(i + 1)
|
||||
stolenItem := stealFrom.items.removeAt(0)
|
||||
child.items = append(child.items, n.items[i])
|
||||
n.items[i] = stolenItem
|
||||
if len(stealFrom.children) > 0 {
|
||||
child.children = append(child.children, stealFrom.children.removeAt(0))
|
||||
}
|
||||
} else {
|
||||
if i >= len(n.items) {
|
||||
i--
|
||||
}
|
||||
child := n.mutableChild(i)
|
||||
// merge with right child
|
||||
mergeItem := n.items.removeAt(i)
|
||||
mergeChild := n.children.removeAt(i + 1)
|
||||
child.items = append(child.items, mergeItem)
|
||||
child.items = append(child.items, mergeChild.items...)
|
||||
child.children = append(child.children, mergeChild.children...)
|
||||
n.cow.freeNode(mergeChild)
|
||||
}
|
||||
return n.remove(item, minItems, typ)
|
||||
}
|
||||
|
||||
type direction int
|
||||
|
||||
const (
|
||||
descend = direction(-1)
|
||||
ascend = direction(+1)
|
||||
)
|
||||
|
||||
// iterate provides a simple method for iterating over elements in the tree.
|
||||
//
|
||||
// When ascending, the 'start' should be less than 'stop' and when descending,
|
||||
// the 'start' should be greater than 'stop'. Setting 'includeStart' to true
|
||||
// will force the iterator to include the first item when it equals 'start',
|
||||
// thus creating a "greaterOrEqual" or "lessThanEqual" rather than just a
|
||||
// "greaterThan" or "lessThan" queries.
|
||||
func (n *node) iterate(dir direction, start, stop Item, includeStart bool, hit bool, iter ItemIterator) (bool, bool) {
|
||||
var ok bool
|
||||
switch dir {
|
||||
case ascend:
|
||||
for i := 0; i < len(n.items); i++ {
|
||||
if start != nil && n.items[i].Less(start) {
|
||||
continue
|
||||
}
|
||||
if len(n.children) > 0 {
|
||||
if hit, ok = n.children[i].iterate(dir, start, stop, includeStart, hit, iter); !ok {
|
||||
return hit, false
|
||||
}
|
||||
}
|
||||
if !includeStart && !hit && start != nil && !start.Less(n.items[i]) {
|
||||
hit = true
|
||||
continue
|
||||
}
|
||||
hit = true
|
||||
if stop != nil && !n.items[i].Less(stop) {
|
||||
return hit, false
|
||||
}
|
||||
if !iter(n.items[i]) {
|
||||
return hit, false
|
||||
}
|
||||
}
|
||||
if len(n.children) > 0 {
|
||||
if hit, ok = n.children[len(n.children)-1].iterate(dir, start, stop, includeStart, hit, iter); !ok {
|
||||
return hit, false
|
||||
}
|
||||
}
|
||||
case descend:
|
||||
for i := len(n.items) - 1; i >= 0; i-- {
|
||||
if start != nil && !n.items[i].Less(start) {
|
||||
if !includeStart || hit || start.Less(n.items[i]) {
|
||||
continue
|
||||
}
|
||||
}
|
||||
if len(n.children) > 0 {
|
||||
if hit, ok = n.children[i+1].iterate(dir, start, stop, includeStart, hit, iter); !ok {
|
||||
return hit, false
|
||||
}
|
||||
}
|
||||
if stop != nil && !stop.Less(n.items[i]) {
|
||||
return hit, false // continue
|
||||
}
|
||||
hit = true
|
||||
if !iter(n.items[i]) {
|
||||
return hit, false
|
||||
}
|
||||
}
|
||||
if len(n.children) > 0 {
|
||||
if hit, ok = n.children[0].iterate(dir, start, stop, includeStart, hit, iter); !ok {
|
||||
return hit, false
|
||||
}
|
||||
}
|
||||
}
|
||||
return hit, true
|
||||
}
|
||||
|
||||
// Used for testing/debugging purposes.
|
||||
func (n *node) print(w io.Writer, level int) {
|
||||
fmt.Fprintf(w, "%sNODE:%v\n", strings.Repeat(" ", level), n.items)
|
||||
for _, c := range n.children {
|
||||
c.print(w, level+1)
|
||||
}
|
||||
}
|
||||
|
||||
// BTree is an implementation of a B-Tree.
|
||||
//
|
||||
// BTree stores Item instances in an ordered structure, allowing easy insertion,
|
||||
// removal, and iteration.
|
||||
//
|
||||
// Write operations are not safe for concurrent mutation by multiple
|
||||
// goroutines, but Read operations are.
|
||||
type BTree struct {
|
||||
degree int
|
||||
length int
|
||||
root *node
|
||||
cow *copyOnWriteContext
|
||||
}
|
||||
|
||||
// copyOnWriteContext pointers determine node ownership... a tree with a write
|
||||
// context equivalent to a node's write context is allowed to modify that node.
|
||||
// A tree whose write context does not match a node's is not allowed to modify
|
||||
// it, and must create a new, writable copy (IE: it's a Clone).
|
||||
//
|
||||
// When doing any write operation, we maintain the invariant that the current
|
||||
// node's context is equal to the context of the tree that requested the write.
|
||||
// We do this by, before we descend into any node, creating a copy with the
|
||||
// correct context if the contexts don't match.
|
||||
//
|
||||
// Since the node we're currently visiting on any write has the requesting
|
||||
// tree's context, that node is modifiable in place. Children of that node may
|
||||
// not share context, but before we descend into them, we'll make a mutable
|
||||
// copy.
|
||||
type copyOnWriteContext struct {
|
||||
freelist *FreeList
|
||||
}
|
||||
|
||||
// Clone clones the btree, lazily. Clone should not be called concurrently,
|
||||
// but the original tree (t) and the new tree (t2) can be used concurrently
|
||||
// once the Clone call completes.
|
||||
//
|
||||
// The internal tree structure of b is marked read-only and shared between t and
|
||||
// t2. Writes to both t and t2 use copy-on-write logic, creating new nodes
|
||||
// whenever one of b's original nodes would have been modified. Read operations
|
||||
// should have no performance degredation. Write operations for both t and t2
|
||||
// will initially experience minor slow-downs caused by additional allocs and
|
||||
// copies due to the aforementioned copy-on-write logic, but should converge to
|
||||
// the original performance characteristics of the original tree.
|
||||
func (t *BTree) Clone() (t2 *BTree) {
|
||||
// Create two entirely new copy-on-write contexts.
|
||||
// This operation effectively creates three trees:
|
||||
// the original, shared nodes (old b.cow)
|
||||
// the new b.cow nodes
|
||||
// the new out.cow nodes
|
||||
cow1, cow2 := *t.cow, *t.cow
|
||||
out := *t
|
||||
t.cow = &cow1
|
||||
out.cow = &cow2
|
||||
return &out
|
||||
}
|
||||
|
||||
// maxItems returns the max number of items to allow per node.
|
||||
func (t *BTree) maxItems() int {
|
||||
return t.degree*2 - 1
|
||||
}
|
||||
|
||||
// minItems returns the min number of items to allow per node (ignored for the
|
||||
// root node).
|
||||
func (t *BTree) minItems() int {
|
||||
return t.degree - 1
|
||||
}
|
||||
|
||||
func (c *copyOnWriteContext) newNode() (n *node) {
|
||||
n = c.freelist.newNode()
|
||||
n.cow = c
|
||||
return
|
||||
}
|
||||
|
||||
type freeType int
|
||||
|
||||
const (
|
||||
ftFreelistFull freeType = iota // node was freed (available for GC, not stored in freelist)
|
||||
ftStored // node was stored in the freelist for later use
|
||||
ftNotOwned // node was ignored by COW, since it's owned by another one
|
||||
)
|
||||
|
||||
// freeNode frees a node within a given COW context, if it's owned by that
|
||||
// context. It returns what happened to the node (see freeType const
|
||||
// documentation).
|
||||
func (c *copyOnWriteContext) freeNode(n *node) freeType {
|
||||
if n.cow == c {
|
||||
// clear to allow GC
|
||||
n.items.truncate(0)
|
||||
n.children.truncate(0)
|
||||
n.cow = nil
|
||||
if c.freelist.freeNode(n) {
|
||||
return ftStored
|
||||
} else {
|
||||
return ftFreelistFull
|
||||
}
|
||||
} else {
|
||||
return ftNotOwned
|
||||
}
|
||||
}
|
||||
|
||||
// ReplaceOrInsert adds the given item to the tree. If an item in the tree
|
||||
// already equals the given one, it is removed from the tree and returned.
|
||||
// Otherwise, nil is returned.
|
||||
//
|
||||
// nil cannot be added to the tree (will panic).
|
||||
func (t *BTree) ReplaceOrInsert(item Item) Item {
|
||||
if item == nil {
|
||||
panic("nil item being added to BTree")
|
||||
}
|
||||
if t.root == nil {
|
||||
t.root = t.cow.newNode()
|
||||
t.root.items = append(t.root.items, item)
|
||||
t.length++
|
||||
return nil
|
||||
} else {
|
||||
t.root = t.root.mutableFor(t.cow)
|
||||
if len(t.root.items) >= t.maxItems() {
|
||||
item2, second := t.root.split(t.maxItems() / 2)
|
||||
oldroot := t.root
|
||||
t.root = t.cow.newNode()
|
||||
t.root.items = append(t.root.items, item2)
|
||||
t.root.children = append(t.root.children, oldroot, second)
|
||||
}
|
||||
}
|
||||
out := t.root.insert(item, t.maxItems())
|
||||
if out == nil {
|
||||
t.length++
|
||||
}
|
||||
return out
|
||||
}
|
||||
|
||||
// Delete removes an item equal to the passed in item from the tree, returning
|
||||
// it. If no such item exists, returns nil.
|
||||
func (t *BTree) Delete(item Item) Item {
|
||||
return t.deleteItem(item, removeItem)
|
||||
}
|
||||
|
||||
// DeleteMin removes the smallest item in the tree and returns it.
|
||||
// If no such item exists, returns nil.
|
||||
func (t *BTree) DeleteMin() Item {
|
||||
return t.deleteItem(nil, removeMin)
|
||||
}
|
||||
|
||||
// DeleteMax removes the largest item in the tree and returns it.
|
||||
// If no such item exists, returns nil.
|
||||
func (t *BTree) DeleteMax() Item {
|
||||
return t.deleteItem(nil, removeMax)
|
||||
}
|
||||
|
||||
func (t *BTree) deleteItem(item Item, typ toRemove) Item {
|
||||
if t.root == nil || len(t.root.items) == 0 {
|
||||
return nil
|
||||
}
|
||||
t.root = t.root.mutableFor(t.cow)
|
||||
out := t.root.remove(item, t.minItems(), typ)
|
||||
if len(t.root.items) == 0 && len(t.root.children) > 0 {
|
||||
oldroot := t.root
|
||||
t.root = t.root.children[0]
|
||||
t.cow.freeNode(oldroot)
|
||||
}
|
||||
if out != nil {
|
||||
t.length--
|
||||
}
|
||||
return out
|
||||
}
|
||||
|
||||
// AscendRange calls the iterator for every value in the tree within the range
|
||||
// [greaterOrEqual, lessThan), until iterator returns false.
|
||||
func (t *BTree) AscendRange(greaterOrEqual, lessThan Item, iterator ItemIterator) {
|
||||
if t.root == nil {
|
||||
return
|
||||
}
|
||||
t.root.iterate(ascend, greaterOrEqual, lessThan, true, false, iterator)
|
||||
}
|
||||
|
||||
// AscendLessThan calls the iterator for every value in the tree within the range
|
||||
// [first, pivot), until iterator returns false.
|
||||
func (t *BTree) AscendLessThan(pivot Item, iterator ItemIterator) {
|
||||
if t.root == nil {
|
||||
return
|
||||
}
|
||||
t.root.iterate(ascend, nil, pivot, false, false, iterator)
|
||||
}
|
||||
|
||||
// AscendGreaterOrEqual calls the iterator for every value in the tree within
|
||||
// the range [pivot, last], until iterator returns false.
|
||||
func (t *BTree) AscendGreaterOrEqual(pivot Item, iterator ItemIterator) {
|
||||
if t.root == nil {
|
||||
return
|
||||
}
|
||||
t.root.iterate(ascend, pivot, nil, true, false, iterator)
|
||||
}
|
||||
|
||||
// Ascend calls the iterator for every value in the tree within the range
|
||||
// [first, last], until iterator returns false.
|
||||
func (t *BTree) Ascend(iterator ItemIterator) {
|
||||
if t.root == nil {
|
||||
return
|
||||
}
|
||||
t.root.iterate(ascend, nil, nil, false, false, iterator)
|
||||
}
|
||||
|
||||
// DescendRange calls the iterator for every value in the tree within the range
|
||||
// [lessOrEqual, greaterThan), until iterator returns false.
|
||||
func (t *BTree) DescendRange(lessOrEqual, greaterThan Item, iterator ItemIterator) {
|
||||
if t.root == nil {
|
||||
return
|
||||
}
|
||||
t.root.iterate(descend, lessOrEqual, greaterThan, true, false, iterator)
|
||||
}
|
||||
|
||||
// DescendLessOrEqual calls the iterator for every value in the tree within the range
|
||||
// [pivot, first], until iterator returns false.
|
||||
func (t *BTree) DescendLessOrEqual(pivot Item, iterator ItemIterator) {
|
||||
if t.root == nil {
|
||||
return
|
||||
}
|
||||
t.root.iterate(descend, pivot, nil, true, false, iterator)
|
||||
}
|
||||
|
||||
// DescendGreaterThan calls the iterator for every value in the tree within
|
||||
// the range (pivot, last], until iterator returns false.
|
||||
func (t *BTree) DescendGreaterThan(pivot Item, iterator ItemIterator) {
|
||||
if t.root == nil {
|
||||
return
|
||||
}
|
||||
t.root.iterate(descend, nil, pivot, false, false, iterator)
|
||||
}
|
||||
|
||||
// Descend calls the iterator for every value in the tree within the range
|
||||
// [last, first], until iterator returns false.
|
||||
func (t *BTree) Descend(iterator ItemIterator) {
|
||||
if t.root == nil {
|
||||
return
|
||||
}
|
||||
t.root.iterate(descend, nil, nil, false, false, iterator)
|
||||
}
|
||||
|
||||
// Get looks for the key item in the tree, returning it. It returns nil if
|
||||
// unable to find that item.
|
||||
func (t *BTree) Get(key Item) Item {
|
||||
if t.root == nil {
|
||||
return nil
|
||||
}
|
||||
return t.root.get(key)
|
||||
}
|
||||
|
||||
// Min returns the smallest item in the tree, or nil if the tree is empty.
|
||||
func (t *BTree) Min() Item {
|
||||
return min(t.root)
|
||||
}
|
||||
|
||||
// Max returns the largest item in the tree, or nil if the tree is empty.
|
||||
func (t *BTree) Max() Item {
|
||||
return max(t.root)
|
||||
}
|
||||
|
||||
// Has returns true if the given key is in the tree.
|
||||
func (t *BTree) Has(key Item) bool {
|
||||
return t.Get(key) != nil
|
||||
}
|
||||
|
||||
// Len returns the number of items currently in the tree.
|
||||
func (t *BTree) Len() int {
|
||||
return t.length
|
||||
}
|
||||
|
||||
// Clear removes all items from the btree. If addNodesToFreelist is true,
|
||||
// t's nodes are added to its freelist as part of this call, until the freelist
|
||||
// is full. Otherwise, the root node is simply dereferenced and the subtree
|
||||
// left to Go's normal GC processes.
|
||||
//
|
||||
// This can be much faster
|
||||
// than calling Delete on all elements, because that requires finding/removing
|
||||
// each element in the tree and updating the tree accordingly. It also is
|
||||
// somewhat faster than creating a new tree to replace the old one, because
|
||||
// nodes from the old tree are reclaimed into the freelist for use by the new
|
||||
// one, instead of being lost to the garbage collector.
|
||||
//
|
||||
// This call takes:
|
||||
// O(1): when addNodesToFreelist is false, this is a single operation.
|
||||
// O(1): when the freelist is already full, it breaks out immediately
|
||||
// O(freelist size): when the freelist is empty and the nodes are all owned
|
||||
// by this tree, nodes are added to the freelist until full.
|
||||
// O(tree size): when all nodes are owned by another tree, all nodes are
|
||||
// iterated over looking for nodes to add to the freelist, and due to
|
||||
// ownership, none are.
|
||||
func (t *BTree) Clear(addNodesToFreelist bool) {
|
||||
if t.root != nil && addNodesToFreelist {
|
||||
t.root.reset(t.cow)
|
||||
}
|
||||
t.root, t.length = nil, 0
|
||||
}
|
||||
|
||||
// reset returns a subtree to the freelist. It breaks out immediately if the
|
||||
// freelist is full, since the only benefit of iterating is to fill that
|
||||
// freelist up. Returns true if parent reset call should continue.
|
||||
func (n *node) reset(c *copyOnWriteContext) bool {
|
||||
for _, child := range n.children {
|
||||
if !child.reset(c) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return c.freeNode(n) != ftFreelistFull
|
||||
}
|
||||
|
||||
// Int implements the Item interface for integers.
|
||||
type Int int
|
||||
|
||||
// Less returns true if int(a) < int(b).
|
||||
func (a Int) Less(b Item) bool {
|
||||
return a < b.(Int)
|
||||
}
|
|
@ -0,0 +1,76 @@
|
|||
// Copyright 2014 Google Inc.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// +build ignore
|
||||
|
||||
// This binary compares memory usage between btree and gollrb.
|
||||
package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"fmt"
|
||||
"math/rand"
|
||||
"runtime"
|
||||
"time"
|
||||
|
||||
"github.com/google/btree"
|
||||
"github.com/petar/GoLLRB/llrb"
|
||||
)
|
||||
|
||||
var (
|
||||
size = flag.Int("size", 1000000, "size of the tree to build")
|
||||
degree = flag.Int("degree", 8, "degree of btree")
|
||||
gollrb = flag.Bool("llrb", false, "use llrb instead of btree")
|
||||
)
|
||||
|
||||
func main() {
|
||||
flag.Parse()
|
||||
vals := rand.Perm(*size)
|
||||
var t, v interface{}
|
||||
v = vals
|
||||
var stats runtime.MemStats
|
||||
for i := 0; i < 10; i++ {
|
||||
runtime.GC()
|
||||
}
|
||||
fmt.Println("-------- BEFORE ----------")
|
||||
runtime.ReadMemStats(&stats)
|
||||
fmt.Printf("%+v\n", stats)
|
||||
start := time.Now()
|
||||
if *gollrb {
|
||||
tr := llrb.New()
|
||||
for _, v := range vals {
|
||||
tr.ReplaceOrInsert(llrb.Int(v))
|
||||
}
|
||||
t = tr // keep it around
|
||||
} else {
|
||||
tr := btree.New(*degree)
|
||||
for _, v := range vals {
|
||||
tr.ReplaceOrInsert(btree.Int(v))
|
||||
}
|
||||
t = tr // keep it around
|
||||
}
|
||||
fmt.Printf("%v inserts in %v\n", *size, time.Since(start))
|
||||
fmt.Println("-------- AFTER ----------")
|
||||
runtime.ReadMemStats(&stats)
|
||||
fmt.Printf("%+v\n", stats)
|
||||
for i := 0; i < 10; i++ {
|
||||
runtime.GC()
|
||||
}
|
||||
fmt.Println("-------- AFTER GC ----------")
|
||||
runtime.ReadMemStats(&stats)
|
||||
fmt.Printf("%+v\n", stats)
|
||||
if t == v {
|
||||
fmt.Println("to make sure vals and tree aren't GC'd")
|
||||
}
|
||||
}
|
|
@ -0,0 +1,7 @@
|
|||
Copyright © 2012 Greg Jones (greg.jones@gmail.com)
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
@ -0,0 +1,61 @@
|
|||
// Package diskcache provides an implementation of httpcache.Cache that uses the diskv package
|
||||
// to supplement an in-memory map with persistent storage
|
||||
//
|
||||
package diskcache
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/md5"
|
||||
"encoding/hex"
|
||||
"github.com/peterbourgon/diskv"
|
||||
"io"
|
||||
)
|
||||
|
||||
// Cache is an implementation of httpcache.Cache that supplements the in-memory map with persistent storage
|
||||
type Cache struct {
|
||||
d *diskv.Diskv
|
||||
}
|
||||
|
||||
// Get returns the response corresponding to key if present
|
||||
func (c *Cache) Get(key string) (resp []byte, ok bool) {
|
||||
key = keyToFilename(key)
|
||||
resp, err := c.d.Read(key)
|
||||
if err != nil {
|
||||
return []byte{}, false
|
||||
}
|
||||
return resp, true
|
||||
}
|
||||
|
||||
// Set saves a response to the cache as key
|
||||
func (c *Cache) Set(key string, resp []byte) {
|
||||
key = keyToFilename(key)
|
||||
c.d.WriteStream(key, bytes.NewReader(resp), true)
|
||||
}
|
||||
|
||||
// Delete removes the response with key from the cache
|
||||
func (c *Cache) Delete(key string) {
|
||||
key = keyToFilename(key)
|
||||
c.d.Erase(key)
|
||||
}
|
||||
|
||||
func keyToFilename(key string) string {
|
||||
h := md5.New()
|
||||
io.WriteString(h, key)
|
||||
return hex.EncodeToString(h.Sum(nil))
|
||||
}
|
||||
|
||||
// New returns a new Cache that will store files in basePath
|
||||
func New(basePath string) *Cache {
|
||||
return &Cache{
|
||||
d: diskv.New(diskv.Options{
|
||||
BasePath: basePath,
|
||||
CacheSizeMax: 100 * 1024 * 1024, // 100MB
|
||||
}),
|
||||
}
|
||||
}
|
||||
|
||||
// NewWithDiskv returns a new Cache using the provided Diskv as underlying
|
||||
// storage.
|
||||
func NewWithDiskv(d *diskv.Diskv) *Cache {
|
||||
return &Cache{d}
|
||||
}
|
|
@ -0,0 +1,551 @@
|
|||
// Package httpcache provides a http.RoundTripper implementation that works as a
|
||||
// mostly RFC-compliant cache for http responses.
|
||||
//
|
||||
// It is only suitable for use as a 'private' cache (i.e. for a web-browser or an API-client
|
||||
// and not for a shared proxy).
|
||||
//
|
||||
package httpcache
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"errors"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net/http"
|
||||
"net/http/httputil"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
stale = iota
|
||||
fresh
|
||||
transparent
|
||||
// XFromCache is the header added to responses that are returned from the cache
|
||||
XFromCache = "X-From-Cache"
|
||||
)
|
||||
|
||||
// A Cache interface is used by the Transport to store and retrieve responses.
|
||||
type Cache interface {
|
||||
// Get returns the []byte representation of a cached response and a bool
|
||||
// set to true if the value isn't empty
|
||||
Get(key string) (responseBytes []byte, ok bool)
|
||||
// Set stores the []byte representation of a response against a key
|
||||
Set(key string, responseBytes []byte)
|
||||
// Delete removes the value associated with the key
|
||||
Delete(key string)
|
||||
}
|
||||
|
||||
// cacheKey returns the cache key for req.
|
||||
func cacheKey(req *http.Request) string {
|
||||
if req.Method == http.MethodGet {
|
||||
return req.URL.String()
|
||||
} else {
|
||||
return req.Method + " " + req.URL.String()
|
||||
}
|
||||
}
|
||||
|
||||
// CachedResponse returns the cached http.Response for req if present, and nil
|
||||
// otherwise.
|
||||
func CachedResponse(c Cache, req *http.Request) (resp *http.Response, err error) {
|
||||
cachedVal, ok := c.Get(cacheKey(req))
|
||||
if !ok {
|
||||
return
|
||||
}
|
||||
|
||||
b := bytes.NewBuffer(cachedVal)
|
||||
return http.ReadResponse(bufio.NewReader(b), req)
|
||||
}
|
||||
|
||||
// MemoryCache is an implemtation of Cache that stores responses in an in-memory map.
|
||||
type MemoryCache struct {
|
||||
mu sync.RWMutex
|
||||
items map[string][]byte
|
||||
}
|
||||
|
||||
// Get returns the []byte representation of the response and true if present, false if not
|
||||
func (c *MemoryCache) Get(key string) (resp []byte, ok bool) {
|
||||
c.mu.RLock()
|
||||
resp, ok = c.items[key]
|
||||
c.mu.RUnlock()
|
||||
return resp, ok
|
||||
}
|
||||
|
||||
// Set saves response resp to the cache with key
|
||||
func (c *MemoryCache) Set(key string, resp []byte) {
|
||||
c.mu.Lock()
|
||||
c.items[key] = resp
|
||||
c.mu.Unlock()
|
||||
}
|
||||
|
||||
// Delete removes key from the cache
|
||||
func (c *MemoryCache) Delete(key string) {
|
||||
c.mu.Lock()
|
||||
delete(c.items, key)
|
||||
c.mu.Unlock()
|
||||
}
|
||||
|
||||
// NewMemoryCache returns a new Cache that will store items in an in-memory map
|
||||
func NewMemoryCache() *MemoryCache {
|
||||
c := &MemoryCache{items: map[string][]byte{}}
|
||||
return c
|
||||
}
|
||||
|
||||
// Transport is an implementation of http.RoundTripper that will return values from a cache
|
||||
// where possible (avoiding a network request) and will additionally add validators (etag/if-modified-since)
|
||||
// to repeated requests allowing servers to return 304 / Not Modified
|
||||
type Transport struct {
|
||||
// The RoundTripper interface actually used to make requests
|
||||
// If nil, http.DefaultTransport is used
|
||||
Transport http.RoundTripper
|
||||
Cache Cache
|
||||
// If true, responses returned from the cache will be given an extra header, X-From-Cache
|
||||
MarkCachedResponses bool
|
||||
}
|
||||
|
||||
// NewTransport returns a new Transport with the
|
||||
// provided Cache implementation and MarkCachedResponses set to true
|
||||
func NewTransport(c Cache) *Transport {
|
||||
return &Transport{Cache: c, MarkCachedResponses: true}
|
||||
}
|
||||
|
||||
// Client returns an *http.Client that caches responses.
|
||||
func (t *Transport) Client() *http.Client {
|
||||
return &http.Client{Transport: t}
|
||||
}
|
||||
|
||||
// varyMatches will return false unless all of the cached values for the headers listed in Vary
|
||||
// match the new request
|
||||
func varyMatches(cachedResp *http.Response, req *http.Request) bool {
|
||||
for _, header := range headerAllCommaSepValues(cachedResp.Header, "vary") {
|
||||
header = http.CanonicalHeaderKey(header)
|
||||
if header != "" && req.Header.Get(header) != cachedResp.Header.Get("X-Varied-"+header) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// RoundTrip takes a Request and returns a Response
|
||||
//
|
||||
// If there is a fresh Response already in cache, then it will be returned without connecting to
|
||||
// the server.
|
||||
//
|
||||
// If there is a stale Response, then any validators it contains will be set on the new request
|
||||
// to give the server a chance to respond with NotModified. If this happens, then the cached Response
|
||||
// will be returned.
|
||||
func (t *Transport) RoundTrip(req *http.Request) (resp *http.Response, err error) {
|
||||
cacheKey := cacheKey(req)
|
||||
cacheable := (req.Method == "GET" || req.Method == "HEAD") && req.Header.Get("range") == ""
|
||||
var cachedResp *http.Response
|
||||
if cacheable {
|
||||
cachedResp, err = CachedResponse(t.Cache, req)
|
||||
} else {
|
||||
// Need to invalidate an existing value
|
||||
t.Cache.Delete(cacheKey)
|
||||
}
|
||||
|
||||
transport := t.Transport
|
||||
if transport == nil {
|
||||
transport = http.DefaultTransport
|
||||
}
|
||||
|
||||
if cacheable && cachedResp != nil && err == nil {
|
||||
if t.MarkCachedResponses {
|
||||
cachedResp.Header.Set(XFromCache, "1")
|
||||
}
|
||||
|
||||
if varyMatches(cachedResp, req) {
|
||||
// Can only use cached value if the new request doesn't Vary significantly
|
||||
freshness := getFreshness(cachedResp.Header, req.Header)
|
||||
if freshness == fresh {
|
||||
return cachedResp, nil
|
||||
}
|
||||
|
||||
if freshness == stale {
|
||||
var req2 *http.Request
|
||||
// Add validators if caller hasn't already done so
|
||||
etag := cachedResp.Header.Get("etag")
|
||||
if etag != "" && req.Header.Get("etag") == "" {
|
||||
req2 = cloneRequest(req)
|
||||
req2.Header.Set("if-none-match", etag)
|
||||
}
|
||||
lastModified := cachedResp.Header.Get("last-modified")
|
||||
if lastModified != "" && req.Header.Get("last-modified") == "" {
|
||||
if req2 == nil {
|
||||
req2 = cloneRequest(req)
|
||||
}
|
||||
req2.Header.Set("if-modified-since", lastModified)
|
||||
}
|
||||
if req2 != nil {
|
||||
req = req2
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
resp, err = transport.RoundTrip(req)
|
||||
if err == nil && req.Method == "GET" && resp.StatusCode == http.StatusNotModified {
|
||||
// Replace the 304 response with the one from cache, but update with some new headers
|
||||
endToEndHeaders := getEndToEndHeaders(resp.Header)
|
||||
for _, header := range endToEndHeaders {
|
||||
cachedResp.Header[header] = resp.Header[header]
|
||||
}
|
||||
resp = cachedResp
|
||||
} else if (err != nil || (cachedResp != nil && resp.StatusCode >= 500)) &&
|
||||
req.Method == "GET" && canStaleOnError(cachedResp.Header, req.Header) {
|
||||
// In case of transport failure and stale-if-error activated, returns cached content
|
||||
// when available
|
||||
return cachedResp, nil
|
||||
} else {
|
||||
if err != nil || resp.StatusCode != http.StatusOK {
|
||||
t.Cache.Delete(cacheKey)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
} else {
|
||||
reqCacheControl := parseCacheControl(req.Header)
|
||||
if _, ok := reqCacheControl["only-if-cached"]; ok {
|
||||
resp = newGatewayTimeoutResponse(req)
|
||||
} else {
|
||||
resp, err = transport.RoundTrip(req)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if cacheable && canStore(parseCacheControl(req.Header), parseCacheControl(resp.Header)) {
|
||||
for _, varyKey := range headerAllCommaSepValues(resp.Header, "vary") {
|
||||
varyKey = http.CanonicalHeaderKey(varyKey)
|
||||
fakeHeader := "X-Varied-" + varyKey
|
||||
reqValue := req.Header.Get(varyKey)
|
||||
if reqValue != "" {
|
||||
resp.Header.Set(fakeHeader, reqValue)
|
||||
}
|
||||
}
|
||||
switch req.Method {
|
||||
case "GET":
|
||||
// Delay caching until EOF is reached.
|
||||
resp.Body = &cachingReadCloser{
|
||||
R: resp.Body,
|
||||
OnEOF: func(r io.Reader) {
|
||||
resp := *resp
|
||||
resp.Body = ioutil.NopCloser(r)
|
||||
respBytes, err := httputil.DumpResponse(&resp, true)
|
||||
if err == nil {
|
||||
t.Cache.Set(cacheKey, respBytes)
|
||||
}
|
||||
},
|
||||
}
|
||||
default:
|
||||
respBytes, err := httputil.DumpResponse(resp, true)
|
||||
if err == nil {
|
||||
t.Cache.Set(cacheKey, respBytes)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
t.Cache.Delete(cacheKey)
|
||||
}
|
||||
return resp, nil
|
||||
}
|
||||
|
||||
// ErrNoDateHeader indicates that the HTTP headers contained no Date header.
|
||||
var ErrNoDateHeader = errors.New("no Date header")
|
||||
|
||||
// Date parses and returns the value of the Date header.
|
||||
func Date(respHeaders http.Header) (date time.Time, err error) {
|
||||
dateHeader := respHeaders.Get("date")
|
||||
if dateHeader == "" {
|
||||
err = ErrNoDateHeader
|
||||
return
|
||||
}
|
||||
|
||||
return time.Parse(time.RFC1123, dateHeader)
|
||||
}
|
||||
|
||||
type realClock struct{}
|
||||
|
||||
func (c *realClock) since(d time.Time) time.Duration {
|
||||
return time.Since(d)
|
||||
}
|
||||
|
||||
type timer interface {
|
||||
since(d time.Time) time.Duration
|
||||
}
|
||||
|
||||
var clock timer = &realClock{}
|
||||
|
||||
// getFreshness will return one of fresh/stale/transparent based on the cache-control
|
||||
// values of the request and the response
|
||||
//
|
||||
// fresh indicates the response can be returned
|
||||
// stale indicates that the response needs validating before it is returned
|
||||
// transparent indicates the response should not be used to fulfil the request
|
||||
//
|
||||
// Because this is only a private cache, 'public' and 'private' in cache-control aren't
|
||||
// signficant. Similarly, smax-age isn't used.
|
||||
func getFreshness(respHeaders, reqHeaders http.Header) (freshness int) {
|
||||
respCacheControl := parseCacheControl(respHeaders)
|
||||
reqCacheControl := parseCacheControl(reqHeaders)
|
||||
if _, ok := reqCacheControl["no-cache"]; ok {
|
||||
return transparent
|
||||
}
|
||||
if _, ok := respCacheControl["no-cache"]; ok {
|
||||
return stale
|
||||
}
|
||||
if _, ok := reqCacheControl["only-if-cached"]; ok {
|
||||
return fresh
|
||||
}
|
||||
|
||||
date, err := Date(respHeaders)
|
||||
if err != nil {
|
||||
return stale
|
||||
}
|
||||
currentAge := clock.since(date)
|
||||
|
||||
var lifetime time.Duration
|
||||
var zeroDuration time.Duration
|
||||
|
||||
// If a response includes both an Expires header and a max-age directive,
|
||||
// the max-age directive overrides the Expires header, even if the Expires header is more restrictive.
|
||||
if maxAge, ok := respCacheControl["max-age"]; ok {
|
||||
lifetime, err = time.ParseDuration(maxAge + "s")
|
||||
if err != nil {
|
||||
lifetime = zeroDuration
|
||||
}
|
||||
} else {
|
||||
expiresHeader := respHeaders.Get("Expires")
|
||||
if expiresHeader != "" {
|
||||
expires, err := time.Parse(time.RFC1123, expiresHeader)
|
||||
if err != nil {
|
||||
lifetime = zeroDuration
|
||||
} else {
|
||||
lifetime = expires.Sub(date)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if maxAge, ok := reqCacheControl["max-age"]; ok {
|
||||
// the client is willing to accept a response whose age is no greater than the specified time in seconds
|
||||
lifetime, err = time.ParseDuration(maxAge + "s")
|
||||
if err != nil {
|
||||
lifetime = zeroDuration
|
||||
}
|
||||
}
|
||||
if minfresh, ok := reqCacheControl["min-fresh"]; ok {
|
||||
// the client wants a response that will still be fresh for at least the specified number of seconds.
|
||||
minfreshDuration, err := time.ParseDuration(minfresh + "s")
|
||||
if err == nil {
|
||||
currentAge = time.Duration(currentAge + minfreshDuration)
|
||||
}
|
||||
}
|
||||
|
||||
if maxstale, ok := reqCacheControl["max-stale"]; ok {
|
||||
// Indicates that the client is willing to accept a response that has exceeded its expiration time.
|
||||
// If max-stale is assigned a value, then the client is willing to accept a response that has exceeded
|
||||
// its expiration time by no more than the specified number of seconds.
|
||||
// If no value is assigned to max-stale, then the client is willing to accept a stale response of any age.
|
||||
//
|
||||
// Responses served only because of a max-stale value are supposed to have a Warning header added to them,
|
||||
// but that seems like a hassle, and is it actually useful? If so, then there needs to be a different
|
||||
// return-value available here.
|
||||
if maxstale == "" {
|
||||
return fresh
|
||||
}
|
||||
maxstaleDuration, err := time.ParseDuration(maxstale + "s")
|
||||
if err == nil {
|
||||
currentAge = time.Duration(currentAge - maxstaleDuration)
|
||||
}
|
||||
}
|
||||
|
||||
if lifetime > currentAge {
|
||||
return fresh
|
||||
}
|
||||
|
||||
return stale
|
||||
}
|
||||
|
||||
// Returns true if either the request or the response includes the stale-if-error
|
||||
// cache control extension: https://tools.ietf.org/html/rfc5861
|
||||
func canStaleOnError(respHeaders, reqHeaders http.Header) bool {
|
||||
respCacheControl := parseCacheControl(respHeaders)
|
||||
reqCacheControl := parseCacheControl(reqHeaders)
|
||||
|
||||
var err error
|
||||
lifetime := time.Duration(-1)
|
||||
|
||||
if staleMaxAge, ok := respCacheControl["stale-if-error"]; ok {
|
||||
if staleMaxAge != "" {
|
||||
lifetime, err = time.ParseDuration(staleMaxAge + "s")
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
} else {
|
||||
return true
|
||||
}
|
||||
}
|
||||
if staleMaxAge, ok := reqCacheControl["stale-if-error"]; ok {
|
||||
if staleMaxAge != "" {
|
||||
lifetime, err = time.ParseDuration(staleMaxAge + "s")
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
} else {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
if lifetime >= 0 {
|
||||
date, err := Date(respHeaders)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
currentAge := clock.since(date)
|
||||
if lifetime > currentAge {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
func getEndToEndHeaders(respHeaders http.Header) []string {
|
||||
// These headers are always hop-by-hop
|
||||
hopByHopHeaders := map[string]struct{}{
|
||||
"Connection": struct{}{},
|
||||
"Keep-Alive": struct{}{},
|
||||
"Proxy-Authenticate": struct{}{},
|
||||
"Proxy-Authorization": struct{}{},
|
||||
"Te": struct{}{},
|
||||
"Trailers": struct{}{},
|
||||
"Transfer-Encoding": struct{}{},
|
||||
"Upgrade": struct{}{},
|
||||
}
|
||||
|
||||
for _, extra := range strings.Split(respHeaders.Get("connection"), ",") {
|
||||
// any header listed in connection, if present, is also considered hop-by-hop
|
||||
if strings.Trim(extra, " ") != "" {
|
||||
hopByHopHeaders[http.CanonicalHeaderKey(extra)] = struct{}{}
|
||||
}
|
||||
}
|
||||
endToEndHeaders := []string{}
|
||||
for respHeader, _ := range respHeaders {
|
||||
if _, ok := hopByHopHeaders[respHeader]; !ok {
|
||||
endToEndHeaders = append(endToEndHeaders, respHeader)
|
||||
}
|
||||
}
|
||||
return endToEndHeaders
|
||||
}
|
||||
|
||||
func canStore(reqCacheControl, respCacheControl cacheControl) (canStore bool) {
|
||||
if _, ok := respCacheControl["no-store"]; ok {
|
||||
return false
|
||||
}
|
||||
if _, ok := reqCacheControl["no-store"]; ok {
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func newGatewayTimeoutResponse(req *http.Request) *http.Response {
|
||||
var braw bytes.Buffer
|
||||
braw.WriteString("HTTP/1.1 504 Gateway Timeout\r\n\r\n")
|
||||
resp, err := http.ReadResponse(bufio.NewReader(&braw), req)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return resp
|
||||
}
|
||||
|
||||
// cloneRequest returns a clone of the provided *http.Request.
|
||||
// The clone is a shallow copy of the struct and its Header map.
|
||||
// (This function copyright goauth2 authors: https://code.google.com/p/goauth2)
|
||||
func cloneRequest(r *http.Request) *http.Request {
|
||||
// shallow copy of the struct
|
||||
r2 := new(http.Request)
|
||||
*r2 = *r
|
||||
// deep copy of the Header
|
||||
r2.Header = make(http.Header)
|
||||
for k, s := range r.Header {
|
||||
r2.Header[k] = s
|
||||
}
|
||||
return r2
|
||||
}
|
||||
|
||||
type cacheControl map[string]string
|
||||
|
||||
func parseCacheControl(headers http.Header) cacheControl {
|
||||
cc := cacheControl{}
|
||||
ccHeader := headers.Get("Cache-Control")
|
||||
for _, part := range strings.Split(ccHeader, ",") {
|
||||
part = strings.Trim(part, " ")
|
||||
if part == "" {
|
||||
continue
|
||||
}
|
||||
if strings.ContainsRune(part, '=') {
|
||||
keyval := strings.Split(part, "=")
|
||||
cc[strings.Trim(keyval[0], " ")] = strings.Trim(keyval[1], ",")
|
||||
} else {
|
||||
cc[part] = ""
|
||||
}
|
||||
}
|
||||
return cc
|
||||
}
|
||||
|
||||
// headerAllCommaSepValues returns all comma-separated values (each
|
||||
// with whitespace trimmed) for header name in headers. According to
|
||||
// Section 4.2 of the HTTP/1.1 spec
|
||||
// (http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.2),
|
||||
// values from multiple occurrences of a header should be concatenated, if
|
||||
// the header's value is a comma-separated list.
|
||||
func headerAllCommaSepValues(headers http.Header, name string) []string {
|
||||
var vals []string
|
||||
for _, val := range headers[http.CanonicalHeaderKey(name)] {
|
||||
fields := strings.Split(val, ",")
|
||||
for i, f := range fields {
|
||||
fields[i] = strings.TrimSpace(f)
|
||||
}
|
||||
vals = append(vals, fields...)
|
||||
}
|
||||
return vals
|
||||
}
|
||||
|
||||
// cachingReadCloser is a wrapper around ReadCloser R that calls OnEOF
|
||||
// handler with a full copy of the content read from R when EOF is
|
||||
// reached.
|
||||
type cachingReadCloser struct {
|
||||
// Underlying ReadCloser.
|
||||
R io.ReadCloser
|
||||
// OnEOF is called with a copy of the content of R when EOF is reached.
|
||||
OnEOF func(io.Reader)
|
||||
|
||||
buf bytes.Buffer // buf stores a copy of the content of R.
|
||||
}
|
||||
|
||||
// Read reads the next len(p) bytes from R or until R is drained. The
|
||||
// return value n is the number of bytes read. If R has no data to
|
||||
// return, err is io.EOF and OnEOF is called with a full copy of what
|
||||
// has been read so far.
|
||||
func (r *cachingReadCloser) Read(p []byte) (n int, err error) {
|
||||
n, err = r.R.Read(p)
|
||||
r.buf.Write(p[:n])
|
||||
if err == io.EOF {
|
||||
r.OnEOF(bytes.NewReader(r.buf.Bytes()))
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
func (r *cachingReadCloser) Close() error {
|
||||
return r.R.Close()
|
||||
}
|
||||
|
||||
// NewMemoryCacheTransport returns a new Transport using the in-memory cache implementation
|
||||
func NewMemoryCacheTransport() *Transport {
|
||||
c := NewMemoryCache()
|
||||
t := NewTransport(c)
|
||||
return t
|
||||
}
|
|
@ -77,7 +77,14 @@ func (adapter *Decoder) Decode(obj interface{}) error {
|
|||
|
||||
// More is there more?
|
||||
func (adapter *Decoder) More() bool {
|
||||
return adapter.iter.head != adapter.iter.tail
|
||||
iter := adapter.iter
|
||||
if iter.Error != nil {
|
||||
return false
|
||||
}
|
||||
if iter.head != iter.tail {
|
||||
return true
|
||||
}
|
||||
return iter.loadMore()
|
||||
}
|
||||
|
||||
// Buffered remaining buffer
|
||||
|
|
|
@ -3,11 +3,11 @@ package jsoniter
|
|||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"github.com/modern-go/reflect2"
|
||||
"io"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
"strconv"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// Any generic object representation.
|
||||
|
|
|
@ -3,9 +3,12 @@ package jsoniter
|
|||
import (
|
||||
"encoding/json"
|
||||
"io"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
"reflect"
|
||||
"sync"
|
||||
"unsafe"
|
||||
|
||||
"github.com/modern-go/concurrent"
|
||||
"github.com/modern-go/reflect2"
|
||||
)
|
||||
|
||||
// Config customize how the API should behave.
|
||||
|
@ -21,6 +24,7 @@ type Config struct {
|
|||
OnlyTaggedField bool
|
||||
ValidateJsonRawMessage bool
|
||||
ObjectFieldMustBeSimpleString bool
|
||||
CaseSensitive bool
|
||||
}
|
||||
|
||||
// API the public interface of this package.
|
||||
|
@ -38,6 +42,8 @@ type API interface {
|
|||
NewDecoder(reader io.Reader) *Decoder
|
||||
Valid(data []byte) bool
|
||||
RegisterExtension(extension Extension)
|
||||
DecoderOf(typ reflect2.Type) ValDecoder
|
||||
EncoderOf(typ reflect2.Type) ValEncoder
|
||||
}
|
||||
|
||||
// ConfigDefault the default API
|
||||
|
@ -59,6 +65,64 @@ var ConfigFastest = Config{
|
|||
ObjectFieldMustBeSimpleString: true, // do not unescape object field
|
||||
}.Froze()
|
||||
|
||||
type frozenConfig struct {
|
||||
configBeforeFrozen Config
|
||||
sortMapKeys bool
|
||||
indentionStep int
|
||||
objectFieldMustBeSimpleString bool
|
||||
onlyTaggedField bool
|
||||
disallowUnknownFields bool
|
||||
decoderCache *concurrent.Map
|
||||
encoderCache *concurrent.Map
|
||||
extensions []Extension
|
||||
streamPool *sync.Pool
|
||||
iteratorPool *sync.Pool
|
||||
caseSensitive bool
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) initCache() {
|
||||
cfg.decoderCache = concurrent.NewMap()
|
||||
cfg.encoderCache = concurrent.NewMap()
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) addDecoderToCache(cacheKey uintptr, decoder ValDecoder) {
|
||||
cfg.decoderCache.Store(cacheKey, decoder)
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) addEncoderToCache(cacheKey uintptr, encoder ValEncoder) {
|
||||
cfg.encoderCache.Store(cacheKey, encoder)
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) getDecoderFromCache(cacheKey uintptr) ValDecoder {
|
||||
decoder, found := cfg.decoderCache.Load(cacheKey)
|
||||
if found {
|
||||
return decoder.(ValDecoder)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) getEncoderFromCache(cacheKey uintptr) ValEncoder {
|
||||
encoder, found := cfg.encoderCache.Load(cacheKey)
|
||||
if found {
|
||||
return encoder.(ValEncoder)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
var cfgCache = concurrent.NewMap()
|
||||
|
||||
func getFrozenConfigFromCache(cfg Config) *frozenConfig {
|
||||
obj, found := cfgCache.Load(cfg)
|
||||
if found {
|
||||
return obj.(*frozenConfig)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func addFrozenConfigToCache(cfg Config, frozenConfig *frozenConfig) {
|
||||
cfgCache.Store(cfg, frozenConfig)
|
||||
}
|
||||
|
||||
// Froze forge API from config
|
||||
func (cfg Config) Froze() API {
|
||||
api := &frozenConfig{
|
||||
|
@ -67,6 +131,7 @@ func (cfg Config) Froze() API {
|
|||
objectFieldMustBeSimpleString: cfg.ObjectFieldMustBeSimpleString,
|
||||
onlyTaggedField: cfg.OnlyTaggedField,
|
||||
disallowUnknownFields: cfg.DisallowUnknownFields,
|
||||
caseSensitive: cfg.CaseSensitive,
|
||||
}
|
||||
api.streamPool = &sync.Pool{
|
||||
New: func() interface{} {
|
||||
|
@ -133,6 +198,11 @@ func (cfg *frozenConfig) validateJsonRawMessage(extension EncoderExtension) {
|
|||
|
||||
func (cfg *frozenConfig) useNumber(extension DecoderExtension) {
|
||||
extension[reflect2.TypeOfPtr((*interface{})(nil)).Elem()] = &funcDecoder{func(ptr unsafe.Pointer, iter *Iterator) {
|
||||
exitingValue := *((*interface{})(ptr))
|
||||
if exitingValue != nil && reflect.TypeOf(exitingValue).Kind() == reflect.Ptr {
|
||||
iter.ReadVal(exitingValue)
|
||||
return
|
||||
}
|
||||
if iter.WhatIsNext() == NumberValue {
|
||||
*((*interface{})(ptr)) = json.Number(iter.readNumberAsString())
|
||||
} else {
|
||||
|
|
|
@ -1,64 +0,0 @@
|
|||
//+build go1.9
|
||||
|
||||
package jsoniter
|
||||
|
||||
import (
|
||||
"sync"
|
||||
)
|
||||
|
||||
type frozenConfig struct {
|
||||
configBeforeFrozen Config
|
||||
sortMapKeys bool
|
||||
indentionStep int
|
||||
objectFieldMustBeSimpleString bool
|
||||
onlyTaggedField bool
|
||||
disallowUnknownFields bool
|
||||
decoderCache sync.Map
|
||||
encoderCache sync.Map
|
||||
extensions []Extension
|
||||
streamPool *sync.Pool
|
||||
iteratorPool *sync.Pool
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) initCache() {
|
||||
cfg.decoderCache = sync.Map{}
|
||||
cfg.encoderCache = sync.Map{}
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) addDecoderToCache(cacheKey uintptr, decoder ValDecoder) {
|
||||
cfg.decoderCache.Store(cacheKey, decoder)
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) addEncoderToCache(cacheKey uintptr, encoder ValEncoder) {
|
||||
cfg.encoderCache.Store(cacheKey, encoder)
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) getDecoderFromCache(cacheKey uintptr) ValDecoder {
|
||||
decoder, found := cfg.decoderCache.Load(cacheKey)
|
||||
if found {
|
||||
return decoder.(ValDecoder)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) getEncoderFromCache(cacheKey uintptr) ValEncoder {
|
||||
encoder, found := cfg.encoderCache.Load(cacheKey)
|
||||
if found {
|
||||
return encoder.(ValEncoder)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
var cfgCache = &sync.Map{}
|
||||
|
||||
func getFrozenConfigFromCache(cfg Config) *frozenConfig {
|
||||
obj, found := cfgCache.Load(cfg)
|
||||
if found {
|
||||
return obj.(*frozenConfig)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func addFrozenConfigToCache(cfg Config, frozenConfig *frozenConfig) {
|
||||
cfgCache.Store(cfg, frozenConfig)
|
||||
}
|
|
@ -1,70 +0,0 @@
|
|||
//+build !go1.9
|
||||
|
||||
package jsoniter
|
||||
|
||||
import (
|
||||
"sync"
|
||||
)
|
||||
|
||||
type frozenConfig struct {
|
||||
configBeforeFrozen Config
|
||||
sortMapKeys bool
|
||||
indentionStep int
|
||||
objectFieldMustBeSimpleString bool
|
||||
onlyTaggedField bool
|
||||
disallowUnknownFields bool
|
||||
cacheLock *sync.RWMutex
|
||||
decoderCache map[uintptr]ValDecoder
|
||||
encoderCache map[uintptr]ValEncoder
|
||||
extensions []Extension
|
||||
streamPool *sync.Pool
|
||||
iteratorPool *sync.Pool
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) initCache() {
|
||||
cfg.cacheLock = &sync.RWMutex{}
|
||||
cfg.decoderCache = map[uintptr]ValDecoder{}
|
||||
cfg.encoderCache = map[uintptr]ValEncoder{}
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) addDecoderToCache(cacheKey uintptr, decoder ValDecoder) {
|
||||
cfg.cacheLock.Lock()
|
||||
cfg.decoderCache[cacheKey] = decoder
|
||||
cfg.cacheLock.Unlock()
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) addEncoderToCache(cacheKey uintptr, encoder ValEncoder) {
|
||||
cfg.cacheLock.Lock()
|
||||
cfg.encoderCache[cacheKey] = encoder
|
||||
cfg.cacheLock.Unlock()
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) getDecoderFromCache(cacheKey uintptr) ValDecoder {
|
||||
cfg.cacheLock.RLock()
|
||||
decoder, _ := cfg.decoderCache[cacheKey].(ValDecoder)
|
||||
cfg.cacheLock.RUnlock()
|
||||
return decoder
|
||||
}
|
||||
|
||||
func (cfg *frozenConfig) getEncoderFromCache(cacheKey uintptr) ValEncoder {
|
||||
cfg.cacheLock.RLock()
|
||||
encoder, _ := cfg.encoderCache[cacheKey].(ValEncoder)
|
||||
cfg.cacheLock.RUnlock()
|
||||
return encoder
|
||||
}
|
||||
|
||||
var cfgCacheLock = &sync.RWMutex{}
|
||||
var cfgCache = map[Config]*frozenConfig{}
|
||||
|
||||
func getFrozenConfigFromCache(cfg Config) *frozenConfig {
|
||||
cfgCacheLock.RLock()
|
||||
frozenConfig := cfgCache[cfg]
|
||||
cfgCacheLock.RUnlock()
|
||||
return frozenConfig
|
||||
}
|
||||
|
||||
func addFrozenConfigToCache(cfg Config, frozenConfig *frozenConfig) {
|
||||
cfgCacheLock.Lock()
|
||||
cfgCache[cfg] = frozenConfig
|
||||
cfgCacheLock.Unlock()
|
||||
}
|
|
@ -60,7 +60,7 @@ func (iter *Iterator) readFieldHash() int64 {
|
|||
if b == '\\' {
|
||||
iter.head = i
|
||||
for _, b := range iter.readStringSlowPath() {
|
||||
if 'A' <= b && b <= 'Z' {
|
||||
if 'A' <= b && b <= 'Z' && !iter.cfg.caseSensitive {
|
||||
b += 'a' - 'A'
|
||||
}
|
||||
hash ^= int64(b)
|
||||
|
@ -82,7 +82,7 @@ func (iter *Iterator) readFieldHash() int64 {
|
|||
}
|
||||
return hash
|
||||
}
|
||||
if 'A' <= b && b <= 'Z' {
|
||||
if 'A' <= b && b <= 'Z' && !iter.cfg.caseSensitive {
|
||||
b += 'a' - 'A'
|
||||
}
|
||||
hash ^= int64(b)
|
||||
|
@ -95,10 +95,14 @@ func (iter *Iterator) readFieldHash() int64 {
|
|||
}
|
||||
}
|
||||
|
||||
func calcHash(str string) int64 {
|
||||
func calcHash(str string, caseSensitive bool) int64 {
|
||||
hash := int64(0x811c9dc5)
|
||||
for _, b := range str {
|
||||
hash ^= int64(unicode.ToLower(b))
|
||||
if caseSensitive {
|
||||
hash ^= int64(b)
|
||||
} else {
|
||||
hash ^= int64(unicode.ToLower(b))
|
||||
}
|
||||
hash *= 0x1000193
|
||||
}
|
||||
return int64(hash)
|
||||
|
|
|
@ -23,6 +23,7 @@ func (cfg *frozenConfig) BorrowStream(writer io.Writer) *Stream {
|
|||
}
|
||||
|
||||
func (cfg *frozenConfig) ReturnStream(stream *Stream) {
|
||||
stream.out = nil
|
||||
stream.Error = nil
|
||||
stream.Attachment = nil
|
||||
cfg.streamPool.Put(stream)
|
||||
|
|
|
@ -4,7 +4,8 @@ import (
|
|||
"fmt"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
|
||||
"github.com/modern-go/reflect2"
|
||||
)
|
||||
|
||||
// ValDecoder is an internal type registered to cache as needed.
|
||||
|
@ -40,6 +41,14 @@ type ctx struct {
|
|||
decoders map[reflect2.Type]ValDecoder
|
||||
}
|
||||
|
||||
func (b *ctx) caseSensitive() bool {
|
||||
if b.frozenConfig == nil {
|
||||
// default is case-insensitive
|
||||
return false
|
||||
}
|
||||
return b.frozenConfig.caseSensitive
|
||||
}
|
||||
|
||||
func (b *ctx) append(prefix string) *ctx {
|
||||
return &ctx{
|
||||
frozenConfig: b.frozenConfig,
|
||||
|
|
|
@ -2,9 +2,9 @@ package jsoniter
|
|||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/modern-go/reflect2"
|
||||
"io"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
)
|
||||
|
||||
func decoderOfArray(ctx *ctx, typ reflect2.Type) ValDecoder {
|
||||
|
|
|
@ -1,9 +1,9 @@
|
|||
package jsoniter
|
||||
|
||||
import (
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
"unsafe"
|
||||
"github.com/modern-go/reflect2"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type dynamicEncoder struct {
|
||||
|
|
|
@ -2,12 +2,12 @@ package jsoniter
|
|||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/modern-go/reflect2"
|
||||
"reflect"
|
||||
"sort"
|
||||
"strings"
|
||||
"unicode"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
)
|
||||
|
||||
var typeDecoders = map[string]ValDecoder{}
|
||||
|
@ -18,8 +18,8 @@ var extensions = []Extension{}
|
|||
|
||||
// StructDescriptor describe how should we encode/decode the struct
|
||||
type StructDescriptor struct {
|
||||
Type reflect2.Type
|
||||
Fields []*Binding
|
||||
Type reflect2.Type
|
||||
Fields []*Binding
|
||||
}
|
||||
|
||||
// GetField get one field from the descriptor by its name.
|
||||
|
@ -47,6 +47,8 @@ type Binding struct {
|
|||
// Can also rename fields by UpdateStructDescriptor.
|
||||
type Extension interface {
|
||||
UpdateStructDescriptor(structDescriptor *StructDescriptor)
|
||||
CreateMapKeyDecoder(typ reflect2.Type) ValDecoder
|
||||
CreateMapKeyEncoder(typ reflect2.Type) ValEncoder
|
||||
CreateDecoder(typ reflect2.Type) ValDecoder
|
||||
CreateEncoder(typ reflect2.Type) ValEncoder
|
||||
DecorateDecoder(typ reflect2.Type, decoder ValDecoder) ValDecoder
|
||||
|
@ -61,6 +63,16 @@ type DummyExtension struct {
|
|||
func (extension *DummyExtension) UpdateStructDescriptor(structDescriptor *StructDescriptor) {
|
||||
}
|
||||
|
||||
// CreateMapKeyDecoder No-op
|
||||
func (extension *DummyExtension) CreateMapKeyDecoder(typ reflect2.Type) ValDecoder {
|
||||
return nil
|
||||
}
|
||||
|
||||
// CreateMapKeyEncoder No-op
|
||||
func (extension *DummyExtension) CreateMapKeyEncoder(typ reflect2.Type) ValEncoder {
|
||||
return nil
|
||||
}
|
||||
|
||||
// CreateDecoder No-op
|
||||
func (extension *DummyExtension) CreateDecoder(typ reflect2.Type) ValDecoder {
|
||||
return nil
|
||||
|
@ -97,6 +109,16 @@ func (extension EncoderExtension) CreateEncoder(typ reflect2.Type) ValEncoder {
|
|||
return extension[typ]
|
||||
}
|
||||
|
||||
// CreateMapKeyDecoder No-op
|
||||
func (extension EncoderExtension) CreateMapKeyDecoder(typ reflect2.Type) ValDecoder {
|
||||
return nil
|
||||
}
|
||||
|
||||
// CreateMapKeyEncoder No-op
|
||||
func (extension EncoderExtension) CreateMapKeyEncoder(typ reflect2.Type) ValEncoder {
|
||||
return nil
|
||||
}
|
||||
|
||||
// DecorateDecoder No-op
|
||||
func (extension EncoderExtension) DecorateDecoder(typ reflect2.Type, decoder ValDecoder) ValDecoder {
|
||||
return decoder
|
||||
|
@ -113,6 +135,16 @@ type DecoderExtension map[reflect2.Type]ValDecoder
|
|||
func (extension DecoderExtension) UpdateStructDescriptor(structDescriptor *StructDescriptor) {
|
||||
}
|
||||
|
||||
// CreateMapKeyDecoder No-op
|
||||
func (extension DecoderExtension) CreateMapKeyDecoder(typ reflect2.Type) ValDecoder {
|
||||
return nil
|
||||
}
|
||||
|
||||
// CreateMapKeyEncoder No-op
|
||||
func (extension DecoderExtension) CreateMapKeyEncoder(typ reflect2.Type) ValEncoder {
|
||||
return nil
|
||||
}
|
||||
|
||||
// CreateDecoder get decoder from map
|
||||
func (extension DecoderExtension) CreateDecoder(typ reflect2.Type) ValDecoder {
|
||||
return extension[typ]
|
||||
|
@ -355,8 +387,8 @@ func describeStruct(ctx *ctx, typ reflect2.Type) *StructDescriptor {
|
|||
}
|
||||
func createStructDescriptor(ctx *ctx, typ reflect2.Type, bindings []*Binding, embeddedBindings []*Binding) *StructDescriptor {
|
||||
structDescriptor := &StructDescriptor{
|
||||
Type: typ,
|
||||
Fields: bindings,
|
||||
Type: typ,
|
||||
Fields: bindings,
|
||||
}
|
||||
for _, extension := range extensions {
|
||||
extension.UpdateStructDescriptor(structDescriptor)
|
||||
|
|
|
@ -2,9 +2,9 @@ package jsoniter
|
|||
|
||||
import (
|
||||
"encoding/json"
|
||||
"github.com/modern-go/reflect2"
|
||||
"strconv"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
)
|
||||
|
||||
type Number string
|
||||
|
@ -109,4 +109,4 @@ func (codec *jsoniterNumberCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
|
|||
|
||||
func (codec *jsoniterNumberCodec) IsEmpty(ptr unsafe.Pointer) bool {
|
||||
return len(*((*Number)(ptr))) == 0
|
||||
}
|
||||
}
|
||||
|
|
|
@ -1,9 +1,9 @@
|
|||
package jsoniter
|
||||
|
||||
import (
|
||||
"unsafe"
|
||||
"encoding/json"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
"github.com/modern-go/reflect2"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
var jsonRawMessageType = reflect2.TypeOfPtr((*json.RawMessage)(nil)).Elem()
|
||||
|
@ -57,4 +57,4 @@ func (codec *jsoniterRawMessageCodec) Encode(ptr unsafe.Pointer, stream *Stream)
|
|||
|
||||
func (codec *jsoniterRawMessageCodec) IsEmpty(ptr unsafe.Pointer) bool {
|
||||
return len(*((*RawMessage)(ptr))) == 0
|
||||
}
|
||||
}
|
||||
|
|
|
@ -1,11 +1,12 @@
|
|||
package jsoniter
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/modern-go/reflect2"
|
||||
"io"
|
||||
"reflect"
|
||||
"sort"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
func decoderOfMap(ctx *ctx, typ reflect2.Type) ValDecoder {
|
||||
|
@ -38,6 +39,12 @@ func encoderOfMap(ctx *ctx, typ reflect2.Type) ValEncoder {
|
|||
}
|
||||
|
||||
func decoderOfMapKey(ctx *ctx, typ reflect2.Type) ValDecoder {
|
||||
for _, extension := range ctx.extensions {
|
||||
decoder := extension.CreateMapKeyDecoder(typ)
|
||||
if decoder != nil {
|
||||
return decoder
|
||||
}
|
||||
}
|
||||
switch typ.Kind() {
|
||||
case reflect.String:
|
||||
return decoderOfType(ctx, reflect2.DefaultTypeOfKind(reflect.String))
|
||||
|
@ -70,6 +77,12 @@ func decoderOfMapKey(ctx *ctx, typ reflect2.Type) ValDecoder {
|
|||
}
|
||||
|
||||
func encoderOfMapKey(ctx *ctx, typ reflect2.Type) ValEncoder {
|
||||
for _, extension := range ctx.extensions {
|
||||
encoder := extension.CreateMapKeyEncoder(typ)
|
||||
if encoder != nil {
|
||||
return encoder
|
||||
}
|
||||
}
|
||||
switch typ.Kind() {
|
||||
case reflect.String:
|
||||
return encoderOfType(ctx, reflect2.DefaultTypeOfKind(reflect.String))
|
||||
|
@ -95,6 +108,9 @@ func encoderOfMapKey(ctx *ctx, typ reflect2.Type) ValEncoder {
|
|||
stringEncoder: ctx.EncoderOf(reflect2.TypeOf("")),
|
||||
}
|
||||
}
|
||||
if typ.Kind() == reflect.Interface {
|
||||
return &dynamicMapKeyEncoder{ctx, typ}
|
||||
}
|
||||
return &lazyErrorEncoder{err: fmt.Errorf("unsupported map key type: %v", typ)}
|
||||
}
|
||||
}
|
||||
|
@ -191,6 +207,21 @@ func (encoder *numericMapKeyEncoder) IsEmpty(ptr unsafe.Pointer) bool {
|
|||
return false
|
||||
}
|
||||
|
||||
type dynamicMapKeyEncoder struct {
|
||||
ctx *ctx
|
||||
valType reflect2.Type
|
||||
}
|
||||
|
||||
func (encoder *dynamicMapKeyEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
|
||||
obj := encoder.valType.UnsafeIndirect(ptr)
|
||||
encoderOfMapKey(encoder.ctx, reflect2.TypeOf(obj)).Encode(reflect2.PtrOf(obj), stream)
|
||||
}
|
||||
|
||||
func (encoder *dynamicMapKeyEncoder) IsEmpty(ptr unsafe.Pointer) bool {
|
||||
obj := encoder.valType.UnsafeIndirect(ptr)
|
||||
return encoderOfMapKey(encoder.ctx, reflect2.TypeOf(obj)).IsEmpty(reflect2.PtrOf(obj))
|
||||
}
|
||||
|
||||
type mapEncoder struct {
|
||||
mapType *reflect2.UnsafeMapType
|
||||
keyEncoder ValEncoder
|
||||
|
@ -241,6 +272,9 @@ func (encoder *sortKeysMapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
|
|||
subStream.buf = make([]byte, 0, 64)
|
||||
key, elem := mapIter.UnsafeNext()
|
||||
encoder.keyEncoder.Encode(key, subStream)
|
||||
if subStream.Error != nil && subStream.Error != io.EOF && stream.Error == nil {
|
||||
stream.Error = subStream.Error
|
||||
}
|
||||
encodedKey := subStream.Buffer()
|
||||
subIter.ResetBytes(encodedKey)
|
||||
decodedKey := subIter.ReadString()
|
||||
|
|
|
@ -1,10 +1,10 @@
|
|||
package jsoniter
|
||||
|
||||
import (
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
"unsafe"
|
||||
"encoding"
|
||||
"encoding/json"
|
||||
"github.com/modern-go/reflect2"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
var marshalerType = reflect2.TypeOfPtr((*json.Marshaler)(nil)).Elem()
|
||||
|
|
|
@ -3,9 +3,10 @@ package jsoniter
|
|||
import (
|
||||
"encoding/base64"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
"strconv"
|
||||
"unsafe"
|
||||
|
||||
"github.com/modern-go/reflect2"
|
||||
)
|
||||
|
||||
const ptrSize = 32 << uintptr(^uintptr(0)>>63)
|
||||
|
@ -405,7 +406,7 @@ func (codec *boolCodec) IsEmpty(ptr unsafe.Pointer) bool {
|
|||
}
|
||||
|
||||
type base64Codec struct {
|
||||
sliceType *reflect2.UnsafeSliceType
|
||||
sliceType *reflect2.UnsafeSliceType
|
||||
sliceDecoder ValDecoder
|
||||
}
|
||||
|
||||
|
@ -416,16 +417,11 @@ func (codec *base64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
|
|||
}
|
||||
switch iter.WhatIsNext() {
|
||||
case StringValue:
|
||||
encoding := base64.StdEncoding
|
||||
src := iter.SkipAndReturnBytes()
|
||||
src = src[1: len(src)-1]
|
||||
decodedLen := encoding.DecodedLen(len(src))
|
||||
dst := make([]byte, decodedLen)
|
||||
len, err := encoding.Decode(dst, src)
|
||||
src := iter.ReadString()
|
||||
dst, err := base64.StdEncoding.DecodeString(src)
|
||||
if err != nil {
|
||||
iter.ReportError("decode base64", err.Error())
|
||||
} else {
|
||||
dst = dst[:len]
|
||||
codec.sliceType.UnsafeSet(ptr, unsafe.Pointer(&dst))
|
||||
}
|
||||
case ArrayValue:
|
||||
|
|
|
@ -1,9 +1,9 @@
|
|||
package jsoniter
|
||||
|
||||
import (
|
||||
"github.com/modern-go/reflect2"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
)
|
||||
|
||||
func decoderOfOptional(ctx *ctx, typ reflect2.Type) ValDecoder {
|
||||
|
|
|
@ -2,9 +2,9 @@ package jsoniter
|
|||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/modern-go/reflect2"
|
||||
"io"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
)
|
||||
|
||||
func decoderOfSlice(ctx *ctx, typ reflect2.Type) ValDecoder {
|
||||
|
|
|
@ -5,7 +5,8 @@ import (
|
|||
"io"
|
||||
"strings"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
|
||||
"github.com/modern-go/reflect2"
|
||||
)
|
||||
|
||||
func decoderOfStruct(ctx *ctx, typ reflect2.Type) ValDecoder {
|
||||
|
@ -31,6 +32,15 @@ func decoderOfStruct(ctx *ctx, typ reflect2.Type) ValDecoder {
|
|||
for k, binding := range bindings {
|
||||
fields[k] = binding.Decoder.(*structFieldDecoder)
|
||||
}
|
||||
|
||||
if !ctx.caseSensitive() {
|
||||
for k, binding := range bindings {
|
||||
if _, found := fields[strings.ToLower(k)]; !found {
|
||||
fields[strings.ToLower(k)] = binding.Decoder.(*structFieldDecoder)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return createStructDecoder(ctx, typ, fields)
|
||||
}
|
||||
|
||||
|
@ -41,12 +51,13 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
knownHash := map[int64]struct{}{
|
||||
0: {},
|
||||
}
|
||||
|
||||
switch len(fields) {
|
||||
case 0:
|
||||
return &skipObjectDecoder{typ}
|
||||
case 1:
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -60,7 +71,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder1 *structFieldDecoder
|
||||
var fieldDecoder2 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -83,7 +94,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder2 *structFieldDecoder
|
||||
var fieldDecoder3 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -114,7 +125,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder3 *structFieldDecoder
|
||||
var fieldDecoder4 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -151,7 +162,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder4 *structFieldDecoder
|
||||
var fieldDecoder5 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -194,7 +205,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder5 *structFieldDecoder
|
||||
var fieldDecoder6 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -243,7 +254,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder6 *structFieldDecoder
|
||||
var fieldDecoder7 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -298,7 +309,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder7 *structFieldDecoder
|
||||
var fieldDecoder8 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -359,7 +370,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder8 *structFieldDecoder
|
||||
var fieldDecoder9 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -426,7 +437,7 @@ func createStructDecoder(ctx *ctx, typ reflect2.Type, fields map[string]*structF
|
|||
var fieldDecoder9 *structFieldDecoder
|
||||
var fieldDecoder10 *structFieldDecoder
|
||||
for fieldName, fieldDecoder := range fields {
|
||||
fieldHash := calcHash(fieldName)
|
||||
fieldHash := calcHash(fieldName, ctx.caseSensitive())
|
||||
_, known := knownHash[fieldHash]
|
||||
if known {
|
||||
return &generalStructDecoder{typ, fields, false}
|
||||
|
@ -489,13 +500,16 @@ func (decoder *generalStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator)
|
|||
if !iter.readObjectStart() {
|
||||
return
|
||||
}
|
||||
decoder.decodeOneField(ptr, iter)
|
||||
for iter.nextToken() == ',' {
|
||||
var c byte
|
||||
for c = ','; c == ','; c = iter.nextToken() {
|
||||
decoder.decodeOneField(ptr, iter)
|
||||
}
|
||||
if iter.Error != nil && iter.Error != io.EOF {
|
||||
iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
|
||||
}
|
||||
if c != '}' {
|
||||
iter.ReportError("struct Decode", `expect }, but found `+string([]byte{c}))
|
||||
}
|
||||
}
|
||||
|
||||
func (decoder *generalStructDecoder) decodeOneField(ptr unsafe.Pointer, iter *Iterator) {
|
||||
|
@ -505,13 +519,13 @@ func (decoder *generalStructDecoder) decodeOneField(ptr unsafe.Pointer, iter *It
|
|||
fieldBytes := iter.ReadStringAsSlice()
|
||||
field = *(*string)(unsafe.Pointer(&fieldBytes))
|
||||
fieldDecoder = decoder.fields[field]
|
||||
if fieldDecoder == nil {
|
||||
if fieldDecoder == nil && !iter.cfg.caseSensitive {
|
||||
fieldDecoder = decoder.fields[strings.ToLower(field)]
|
||||
}
|
||||
} else {
|
||||
field = iter.ReadString()
|
||||
fieldDecoder = decoder.fields[field]
|
||||
if fieldDecoder == nil {
|
||||
if fieldDecoder == nil && !iter.cfg.caseSensitive {
|
||||
fieldDecoder = decoder.fields[strings.ToLower(field)]
|
||||
}
|
||||
}
|
||||
|
@ -1031,4 +1045,4 @@ func (decoder *stringModeNumberDecoder) Decode(ptr unsafe.Pointer, iter *Iterato
|
|||
iter.ReportError("stringModeNumberDecoder", `expect ", but found `+string([]byte{c}))
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
@ -2,10 +2,10 @@ package jsoniter
|
|||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/modern-go/reflect2"
|
||||
"io"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/reflect2"
|
||||
)
|
||||
|
||||
func encoderOfStruct(ctx *ctx, typ reflect2.Type) ValEncoder {
|
||||
|
|
|
@ -55,6 +55,11 @@ func (stream *Stream) Buffer() []byte {
|
|||
return stream.buf
|
||||
}
|
||||
|
||||
// SetBuffer allows to append to the internal buffer directly
|
||||
func (stream *Stream) SetBuffer(buf []byte) {
|
||||
stream.buf = buf
|
||||
}
|
||||
|
||||
// Write writes the contents of p into the buffer.
|
||||
// It returns the number of bytes written.
|
||||
// If nn < len(p), it also returns an error explaining
|
||||
|
|
|
@ -17,16 +17,16 @@ func init() {
|
|||
func writeFirstBuf(space []byte, v uint32) []byte {
|
||||
start := v >> 24
|
||||
if start == 0 {
|
||||
space = append(space, byte(v >> 16), byte(v >> 8))
|
||||
space = append(space, byte(v>>16), byte(v>>8))
|
||||
} else if start == 1 {
|
||||
space = append(space, byte(v >> 8))
|
||||
space = append(space, byte(v>>8))
|
||||
}
|
||||
space = append(space, byte(v))
|
||||
return space
|
||||
}
|
||||
|
||||
func writeBuf(buf []byte, v uint32) []byte {
|
||||
return append(buf, byte(v >> 16), byte(v >> 8), byte(v))
|
||||
return append(buf, byte(v>>16), byte(v>>8), byte(v))
|
||||
}
|
||||
|
||||
// WriteUint8 write uint8 to stream
|
||||
|
@ -91,7 +91,7 @@ func (stream *Stream) WriteUint32(val uint32) {
|
|||
stream.buf = writeFirstBuf(stream.buf, digits[q2])
|
||||
} else {
|
||||
r3 := q2 - q3*1000
|
||||
stream.buf = append(stream.buf, byte(q3 + '0'))
|
||||
stream.buf = append(stream.buf, byte(q3+'0'))
|
||||
stream.buf = writeBuf(stream.buf, digits[r3])
|
||||
}
|
||||
stream.buf = writeBuf(stream.buf, digits[r2])
|
||||
|
|
4
vendor/github.com/v2pro/plz/LICENSE → vendor/github.com/modern-go/concurrent/LICENSE
generated
vendored
4
vendor/github.com/v2pro/plz/LICENSE → vendor/github.com/modern-go/concurrent/LICENSE
generated
vendored
|
@ -178,7 +178,7 @@
|
|||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "{}"
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
|
@ -186,7 +186,7 @@
|
|||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright {yyyy} {name of copyright owner}
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
|
@ -0,0 +1,14 @@
|
|||
package concurrent
|
||||
|
||||
import "context"
|
||||
|
||||
// Executor replace go keyword to start a new goroutine
|
||||
// the goroutine should cancel itself if the context passed in has been cancelled
|
||||
// the goroutine started by the executor, is owned by the executor
|
||||
// we can cancel all executors owned by the executor just by stop the executor itself
|
||||
// however Executor interface does not Stop method, the one starting and owning executor
|
||||
// should use the concrete type of executor, instead of this interface.
|
||||
type Executor interface {
|
||||
// Go starts a new goroutine controlled by the context
|
||||
Go(handler func(ctx context.Context))
|
||||
}
|
|
@ -4,10 +4,12 @@ package concurrent
|
|||
|
||||
import "sync"
|
||||
|
||||
// Map is a wrapper for sync.Map introduced in go1.9
|
||||
type Map struct {
|
||||
sync.Map
|
||||
}
|
||||
|
||||
// NewMap creates a thread safe Map
|
||||
func NewMap() *Map {
|
||||
return &Map{}
|
||||
}
|
||||
}
|
|
@ -4,17 +4,20 @@ package concurrent
|
|||
|
||||
import "sync"
|
||||
|
||||
// Map implements a thread safe map for go version below 1.9 using mutex
|
||||
type Map struct {
|
||||
lock sync.RWMutex
|
||||
data map[interface{}]interface{}
|
||||
}
|
||||
|
||||
// NewMap creates a thread safe map
|
||||
func NewMap() *Map {
|
||||
return &Map{
|
||||
data: make(map[interface{}]interface{}, 32),
|
||||
}
|
||||
}
|
||||
|
||||
// Load is same as sync.Map Load
|
||||
func (m *Map) Load(key interface{}) (elem interface{}, found bool) {
|
||||
m.lock.RLock()
|
||||
elem, found = m.data[key]
|
||||
|
@ -22,9 +25,9 @@ func (m *Map) Load(key interface{}) (elem interface{}, found bool) {
|
|||
return
|
||||
}
|
||||
|
||||
// Load is same as sync.Map Store
|
||||
func (m *Map) Store(key interface{}, elem interface{}) {
|
||||
m.lock.Lock()
|
||||
m.data[key] = elem
|
||||
m.lock.Unlock()
|
||||
}
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
package concurrent
|
||||
|
||||
import (
|
||||
"os"
|
||||
"log"
|
||||
"io/ioutil"
|
||||
)
|
||||
|
||||
// ErrorLogger is used to print out error, can be set to writer other than stderr
|
||||
var ErrorLogger = log.New(os.Stderr, "", 0)
|
||||
|
||||
// InfoLogger is used to print informational message, default to off
|
||||
var InfoLogger = log.New(ioutil.Discard, "", 0)
|
|
@ -0,0 +1,119 @@
|
|||
package concurrent
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"runtime"
|
||||
"runtime/debug"
|
||||
"sync"
|
||||
"time"
|
||||
"reflect"
|
||||
)
|
||||
|
||||
// HandlePanic logs goroutine panic by default
|
||||
var HandlePanic = func(recovered interface{}, funcName string) {
|
||||
ErrorLogger.Println(fmt.Sprintf("%s panic: %v", funcName, recovered))
|
||||
ErrorLogger.Println(string(debug.Stack()))
|
||||
}
|
||||
|
||||
// UnboundedExecutor is a executor without limits on counts of alive goroutines
|
||||
// it tracks the goroutine started by it, and can cancel them when shutdown
|
||||
type UnboundedExecutor struct {
|
||||
ctx context.Context
|
||||
cancel context.CancelFunc
|
||||
activeGoroutinesMutex *sync.Mutex
|
||||
activeGoroutines map[string]int
|
||||
HandlePanic func(recovered interface{}, funcName string)
|
||||
}
|
||||
|
||||
// GlobalUnboundedExecutor has the life cycle of the program itself
|
||||
// any goroutine want to be shutdown before main exit can be started from this executor
|
||||
// GlobalUnboundedExecutor expects the main function to call stop
|
||||
// it does not magically knows the main function exits
|
||||
var GlobalUnboundedExecutor = NewUnboundedExecutor()
|
||||
|
||||
// NewUnboundedExecutor creates a new UnboundedExecutor,
|
||||
// UnboundedExecutor can not be created by &UnboundedExecutor{}
|
||||
// HandlePanic can be set with a callback to override global HandlePanic
|
||||
func NewUnboundedExecutor() *UnboundedExecutor {
|
||||
ctx, cancel := context.WithCancel(context.TODO())
|
||||
return &UnboundedExecutor{
|
||||
ctx: ctx,
|
||||
cancel: cancel,
|
||||
activeGoroutinesMutex: &sync.Mutex{},
|
||||
activeGoroutines: map[string]int{},
|
||||
}
|
||||
}
|
||||
|
||||
// Go starts a new goroutine and tracks its lifecycle.
|
||||
// Panic will be recovered and logged automatically, except for StopSignal
|
||||
func (executor *UnboundedExecutor) Go(handler func(ctx context.Context)) {
|
||||
pc := reflect.ValueOf(handler).Pointer()
|
||||
f := runtime.FuncForPC(pc)
|
||||
funcName := f.Name()
|
||||
file, line := f.FileLine(pc)
|
||||
executor.activeGoroutinesMutex.Lock()
|
||||
defer executor.activeGoroutinesMutex.Unlock()
|
||||
startFrom := fmt.Sprintf("%s:%d", file, line)
|
||||
executor.activeGoroutines[startFrom] += 1
|
||||
go func() {
|
||||
defer func() {
|
||||
recovered := recover()
|
||||
// if you want to quit a goroutine without trigger HandlePanic
|
||||
// use runtime.Goexit() to quit
|
||||
if recovered != nil {
|
||||
if executor.HandlePanic == nil {
|
||||
HandlePanic(recovered, funcName)
|
||||
} else {
|
||||
executor.HandlePanic(recovered, funcName)
|
||||
}
|
||||
}
|
||||
executor.activeGoroutinesMutex.Lock()
|
||||
executor.activeGoroutines[startFrom] -= 1
|
||||
executor.activeGoroutinesMutex.Unlock()
|
||||
}()
|
||||
handler(executor.ctx)
|
||||
}()
|
||||
}
|
||||
|
||||
// Stop cancel all goroutines started by this executor without wait
|
||||
func (executor *UnboundedExecutor) Stop() {
|
||||
executor.cancel()
|
||||
}
|
||||
|
||||
// StopAndWaitForever cancel all goroutines started by this executor and
|
||||
// wait until all goroutines exited
|
||||
func (executor *UnboundedExecutor) StopAndWaitForever() {
|
||||
executor.StopAndWait(context.Background())
|
||||
}
|
||||
|
||||
// StopAndWait cancel all goroutines started by this executor and wait.
|
||||
// Wait can be cancelled by the context passed in.
|
||||
func (executor *UnboundedExecutor) StopAndWait(ctx context.Context) {
|
||||
executor.cancel()
|
||||
for {
|
||||
oneHundredMilliseconds := time.NewTimer(time.Millisecond * 100)
|
||||
select {
|
||||
case <-oneHundredMilliseconds.C:
|
||||
if executor.checkNoActiveGoroutines() {
|
||||
return
|
||||
}
|
||||
case <-ctx.Done():
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (executor *UnboundedExecutor) checkNoActiveGoroutines() bool {
|
||||
executor.activeGoroutinesMutex.Lock()
|
||||
defer executor.activeGoroutinesMutex.Unlock()
|
||||
for startFrom, count := range executor.activeGoroutines {
|
||||
if count > 0 {
|
||||
InfoLogger.Println("UnboundedExecutor is still waiting goroutines to quit",
|
||||
"startFrom", startFrom,
|
||||
"count", count)
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
|
@ -6,4 +6,4 @@ import "unsafe"
|
|||
|
||||
func resolveTypeOff(rtype unsafe.Pointer, off int32) unsafe.Pointer {
|
||||
return nil
|
||||
}
|
||||
}
|
|
@ -1,9 +1,9 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"github.com/modern-go/concurrent"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
"github.com/v2pro/plz/concurrent"
|
||||
)
|
||||
|
||||
type Type interface {
|
||||
|
@ -136,7 +136,7 @@ type frozenConfig struct {
|
|||
func (cfg Config) Froze() *frozenConfig {
|
||||
return &frozenConfig{
|
||||
useSafeImplementation: cfg.UseSafeImplementation,
|
||||
cache: concurrent.NewMap(),
|
||||
cache: concurrent.NewMap(),
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -150,6 +150,9 @@ func (cfg *frozenConfig) TypeOf(obj interface{}) Type {
|
|||
}
|
||||
|
||||
func (cfg *frozenConfig) Type2(type1 reflect.Type) Type {
|
||||
if type1 == nil {
|
||||
return nil
|
||||
}
|
||||
cacheKey := uintptr(unpackEFace(type1).data)
|
||||
typeObj, found := cfg.cache.Load(cacheKey)
|
||||
if found {
|
||||
|
@ -213,6 +216,9 @@ func TypeOfPtr(obj interface{}) PtrType {
|
|||
}
|
||||
|
||||
func Type2(type1 reflect.Type) Type {
|
||||
if type1 == nil {
|
||||
return nil
|
||||
}
|
||||
return ConfigUnsafe.Type2(type1)
|
||||
}
|
||||
|
||||
|
@ -279,4 +285,14 @@ func likePtrType(typ reflect.Type) bool {
|
|||
func NoEscape(p unsafe.Pointer) unsafe.Pointer {
|
||||
x := uintptr(p)
|
||||
return unsafe.Pointer(x ^ 0)
|
||||
}
|
||||
}
|
||||
|
||||
func UnsafeCastString(str string) []byte {
|
||||
stringHeader := (*reflect.StringHeader)(unsafe.Pointer(&str))
|
||||
sliceHeader := &reflect.SliceHeader{
|
||||
Data: stringHeader.Data,
|
||||
Cap: stringHeader.Len,
|
||||
Len: stringHeader.Len,
|
||||
}
|
||||
return *(*[]byte)(unsafe.Pointer(sliceHeader))
|
||||
}
|
|
@ -0,0 +1,30 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// DefaultTypeOfKind return the non aliased default type for the kind
|
||||
func DefaultTypeOfKind(kind reflect.Kind) Type {
|
||||
return kindTypes[kind]
|
||||
}
|
||||
|
||||
var kindTypes = map[reflect.Kind]Type{
|
||||
reflect.Bool: TypeOf(true),
|
||||
reflect.Uint8: TypeOf(uint8(0)),
|
||||
reflect.Int8: TypeOf(int8(0)),
|
||||
reflect.Uint16: TypeOf(uint16(0)),
|
||||
reflect.Int16: TypeOf(int16(0)),
|
||||
reflect.Uint32: TypeOf(uint32(0)),
|
||||
reflect.Int32: TypeOf(int32(0)),
|
||||
reflect.Uint64: TypeOf(uint64(0)),
|
||||
reflect.Int64: TypeOf(int64(0)),
|
||||
reflect.Uint: TypeOf(uint(0)),
|
||||
reflect.Int: TypeOf(int(0)),
|
||||
reflect.Float32: TypeOf(float32(0)),
|
||||
reflect.Float64: TypeOf(float64(0)),
|
||||
reflect.Uintptr: TypeOf(uintptr(0)),
|
||||
reflect.String: TypeOf(""),
|
||||
reflect.UnsafePointer: TypeOf(unsafe.Pointer(nil)),
|
||||
}
|
|
@ -55,4 +55,4 @@ func (field *safeField) Get(obj interface{}) interface{} {
|
|||
|
||||
func (field *safeField) UnsafeGet(obj unsafe.Pointer) unsafe.Pointer {
|
||||
panic("does not support unsafe operation")
|
||||
}
|
||||
}
|
|
@ -76,8 +76,8 @@ func (type2 *safeMapType) UnsafeIterate(obj unsafe.Pointer) MapIterator {
|
|||
}
|
||||
|
||||
type safeMapIterator struct {
|
||||
i int
|
||||
m reflect.Value
|
||||
i int
|
||||
m reflect.Value
|
||||
keys []reflect.Value
|
||||
}
|
||||
|
||||
|
@ -98,4 +98,4 @@ func (iter *safeMapIterator) Next() (interface{}, interface{}) {
|
|||
|
||||
func (iter *safeMapIterator) UnsafeNext() (unsafe.Pointer, unsafe.Pointer) {
|
||||
panic("does not support unsafe operation")
|
||||
}
|
||||
}
|
|
@ -89,4 +89,4 @@ func (type2 *safeSliceType) Cap(obj interface{}) int {
|
|||
|
||||
func (type2 *safeSliceType) UnsafeCap(ptr unsafe.Pointer) int {
|
||||
panic("does not support unsafe operation")
|
||||
}
|
||||
}
|
|
@ -0,0 +1,29 @@
|
|||
package reflect2
|
||||
|
||||
type safeStructType struct {
|
||||
safeType
|
||||
}
|
||||
|
||||
func (type2 *safeStructType) FieldByName(name string) StructField {
|
||||
field, found := type2.Type.FieldByName(name)
|
||||
if !found {
|
||||
panic("field " + name + " not found")
|
||||
}
|
||||
return &safeField{StructField: field}
|
||||
}
|
||||
|
||||
func (type2 *safeStructType) Field(i int) StructField {
|
||||
return &safeField{StructField: type2.Type.Field(i)}
|
||||
}
|
||||
|
||||
func (type2 *safeStructType) FieldByIndex(index []int) StructField {
|
||||
return &safeField{StructField: type2.Type.FieldByIndex(index)}
|
||||
}
|
||||
|
||||
func (type2 *safeStructType) FieldByNameFunc(match func(string) bool) StructField {
|
||||
field, found := type2.Type.FieldByNameFunc(match)
|
||||
if !found {
|
||||
panic("field match condition not found in " + type2.Type.String())
|
||||
}
|
||||
return &safeField{StructField: field}
|
||||
}
|
|
@ -75,4 +75,4 @@ func (type2 *safeType) UnsafeSet(ptr unsafe.Pointer, val unsafe.Pointer) {
|
|||
|
||||
func (type2 *safeType) AssignableTo(anotherType Type) bool {
|
||||
return type2.Type1().AssignableTo(anotherType.Type1())
|
||||
}
|
||||
}
|
|
@ -1,10 +1,10 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"unsafe"
|
||||
"reflect"
|
||||
"runtime"
|
||||
"strings"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// typelinks1 for 1.5 ~ 1.6
|
||||
|
@ -16,6 +16,7 @@ func typelinks1() [][]unsafe.Pointer
|
|||
func typelinks2() (sections []unsafe.Pointer, offset [][]int32)
|
||||
|
||||
var types = map[string]reflect.Type{}
|
||||
var packages = map[string]map[string]reflect.Type{}
|
||||
|
||||
func init() {
|
||||
ver := runtime.Version()
|
||||
|
@ -36,11 +37,25 @@ func loadGo15Types() {
|
|||
(*emptyInterface)(unsafe.Pointer(&obj)).word = typePtr
|
||||
typ := obj.(reflect.Type)
|
||||
if typ.Kind() == reflect.Ptr && typ.Elem().Kind() == reflect.Struct {
|
||||
types[typ.Elem().String()] = typ.Elem()
|
||||
loadedType := typ.Elem()
|
||||
pkgTypes := packages[loadedType.PkgPath()]
|
||||
if pkgTypes == nil {
|
||||
pkgTypes = map[string]reflect.Type{}
|
||||
packages[loadedType.PkgPath()] = pkgTypes
|
||||
}
|
||||
types[loadedType.String()] = loadedType
|
||||
pkgTypes[loadedType.Name()] = loadedType
|
||||
}
|
||||
if typ.Kind() == reflect.Slice && typ.Elem().Kind() == reflect.Ptr &&
|
||||
typ.Elem().Elem().Kind() == reflect.Struct {
|
||||
types[typ.Elem().Elem().String()] = typ.Elem().Elem()
|
||||
loadedType := typ.Elem().Elem()
|
||||
pkgTypes := packages[loadedType.PkgPath()]
|
||||
if pkgTypes == nil {
|
||||
pkgTypes = map[string]reflect.Type{}
|
||||
packages[loadedType.PkgPath()] = pkgTypes
|
||||
}
|
||||
types[loadedType.String()] = loadedType
|
||||
pkgTypes[loadedType.Name()] = loadedType
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -55,7 +70,14 @@ func loadGo17Types() {
|
|||
(*emptyInterface)(unsafe.Pointer(&obj)).word = resolveTypeOff(unsafe.Pointer(rodata), off)
|
||||
typ := obj.(reflect.Type)
|
||||
if typ.Kind() == reflect.Ptr && typ.Elem().Kind() == reflect.Struct {
|
||||
types[typ.Elem().String()] = typ.Elem()
|
||||
loadedType := typ.Elem()
|
||||
pkgTypes := packages[loadedType.PkgPath()]
|
||||
if pkgTypes == nil {
|
||||
pkgTypes = map[string]reflect.Type{}
|
||||
packages[loadedType.PkgPath()] = pkgTypes
|
||||
}
|
||||
types[loadedType.String()] = loadedType
|
||||
pkgTypes[loadedType.Name()] = loadedType
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -70,3 +92,12 @@ type emptyInterface struct {
|
|||
func TypeByName(typeName string) Type {
|
||||
return Type2(types[typeName])
|
||||
}
|
||||
|
||||
// TypeByPackageName return the type by its package and name
|
||||
func TypeByPackageName(pkgPath string, name string) Type {
|
||||
pkgTypes := packages[pkgPath]
|
||||
if pkgTypes == nil {
|
||||
return nil
|
||||
}
|
||||
return Type2(pkgTypes[name])
|
||||
}
|
|
@ -1,8 +1,8 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"unsafe"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type UnsafeArrayType struct {
|
|
@ -1,8 +1,8 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"unsafe"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type eface struct {
|
||||
|
@ -56,4 +56,4 @@ func (type2 *UnsafeEFaceType) Indirect(obj interface{}) interface{} {
|
|||
|
||||
func (type2 *UnsafeEFaceType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
|
||||
return *(*interface{})(ptr)
|
||||
}
|
||||
}
|
|
@ -1,8 +1,8 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"unsafe"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type iface struct {
|
||||
|
@ -61,4 +61,4 @@ func (type2 *UnsafeIFaceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
|
|||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
}
|
|
@ -67,4 +67,4 @@ func add(p unsafe.Pointer, x uintptr, whySafe string) unsafe.Pointer {
|
|||
// the benefit is to surface this assumption at the call site.)
|
||||
func arrayAt(p unsafe.Pointer, i int, eltSize uintptr, whySafe string) unsafe.Pointer {
|
||||
return add(p, uintptr(i)*eltSize, "i < len")
|
||||
}
|
||||
}
|
|
@ -1,8 +1,8 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"unsafe"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type UnsafePtrType struct {
|
|
@ -1,8 +1,8 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"unsafe"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// sliceHeader is a safe version of SliceHeader used within this package.
|
|
@ -56,4 +56,4 @@ func (type2 *UnsafeStructType) FieldByNameFunc(match func(string) bool) StructFi
|
|||
panic("field match condition not found in " + type2.Type.String())
|
||||
}
|
||||
return newUnsafeStructField(type2, structField)
|
||||
}
|
||||
}
|
|
@ -1,8 +1,8 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"unsafe"
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
type unsafeType struct {
|
||||
|
@ -15,7 +15,7 @@ func newUnsafeType(cfg *frozenConfig, type1 reflect.Type) *unsafeType {
|
|||
return &unsafeType{
|
||||
safeType: safeType{
|
||||
Type: type1,
|
||||
cfg: cfg,
|
||||
cfg: cfg,
|
||||
},
|
||||
rtype: unpackEFace(type1).data,
|
||||
ptrRType: unpackEFace(reflect.PtrTo(type1)).data,
|
|
@ -0,0 +1,4 @@
|
|||
Petar Maymounkov <petar@5ttt.org>
|
||||
Vadim Vygonets <vadik@vygo.net>
|
||||
Ian Smith <iansmith@acm.org>
|
||||
Martin Bruse
|
|
@ -0,0 +1,27 @@
|
|||
Copyright (c) 2010, Petar Maymounkov
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
(*) Redistributions of source code must retain the above copyright notice, this list
|
||||
of conditions and the following disclaimer.
|
||||
|
||||
(*) Redistributions in binary form must reproduce the above copyright notice, this
|
||||
list of conditions and the following disclaimer in the documentation and/or
|
||||
other materials provided with the distribution.
|
||||
|
||||
(*) Neither the name of Petar Maymounkov nor the names of its contributors may be
|
||||
used to endorse or promote products derived from this software without specific
|
||||
prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
|
||||
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
||||
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
@ -0,0 +1,39 @@
|
|||
// Copyright 2010 Petar Maymounkov. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package llrb
|
||||
|
||||
import "math"
|
||||
|
||||
// avgVar maintains the average and variance of a stream of numbers
|
||||
// in a space-efficient manner.
|
||||
type avgVar struct {
|
||||
count int64
|
||||
sum, sumsq float64
|
||||
}
|
||||
|
||||
func (av *avgVar) Init() {
|
||||
av.count = 0
|
||||
av.sum = 0.0
|
||||
av.sumsq = 0.0
|
||||
}
|
||||
|
||||
func (av *avgVar) Add(sample float64) {
|
||||
av.count++
|
||||
av.sum += sample
|
||||
av.sumsq += sample * sample
|
||||
}
|
||||
|
||||
func (av *avgVar) GetCount() int64 { return av.count }
|
||||
|
||||
func (av *avgVar) GetAvg() float64 { return av.sum / float64(av.count) }
|
||||
|
||||
func (av *avgVar) GetTotal() float64 { return av.sum }
|
||||
|
||||
func (av *avgVar) GetVar() float64 {
|
||||
a := av.GetAvg()
|
||||
return av.sumsq/float64(av.count) - a*a
|
||||
}
|
||||
|
||||
func (av *avgVar) GetStdDev() float64 { return math.Sqrt(av.GetVar()) }
|
|
@ -0,0 +1,93 @@
|
|||
package llrb
|
||||
|
||||
type ItemIterator func(i Item) bool
|
||||
|
||||
//func (t *Tree) Ascend(iterator ItemIterator) {
|
||||
// t.AscendGreaterOrEqual(Inf(-1), iterator)
|
||||
//}
|
||||
|
||||
func (t *LLRB) AscendRange(greaterOrEqual, lessThan Item, iterator ItemIterator) {
|
||||
t.ascendRange(t.root, greaterOrEqual, lessThan, iterator)
|
||||
}
|
||||
|
||||
func (t *LLRB) ascendRange(h *Node, inf, sup Item, iterator ItemIterator) bool {
|
||||
if h == nil {
|
||||
return true
|
||||
}
|
||||
if !less(h.Item, sup) {
|
||||
return t.ascendRange(h.Left, inf, sup, iterator)
|
||||
}
|
||||
if less(h.Item, inf) {
|
||||
return t.ascendRange(h.Right, inf, sup, iterator)
|
||||
}
|
||||
|
||||
if !t.ascendRange(h.Left, inf, sup, iterator) {
|
||||
return false
|
||||
}
|
||||
if !iterator(h.Item) {
|
||||
return false
|
||||
}
|
||||
return t.ascendRange(h.Right, inf, sup, iterator)
|
||||
}
|
||||
|
||||
// AscendGreaterOrEqual will call iterator once for each element greater or equal to
|
||||
// pivot in ascending order. It will stop whenever the iterator returns false.
|
||||
func (t *LLRB) AscendGreaterOrEqual(pivot Item, iterator ItemIterator) {
|
||||
t.ascendGreaterOrEqual(t.root, pivot, iterator)
|
||||
}
|
||||
|
||||
func (t *LLRB) ascendGreaterOrEqual(h *Node, pivot Item, iterator ItemIterator) bool {
|
||||
if h == nil {
|
||||
return true
|
||||
}
|
||||
if !less(h.Item, pivot) {
|
||||
if !t.ascendGreaterOrEqual(h.Left, pivot, iterator) {
|
||||
return false
|
||||
}
|
||||
if !iterator(h.Item) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return t.ascendGreaterOrEqual(h.Right, pivot, iterator)
|
||||
}
|
||||
|
||||
func (t *LLRB) AscendLessThan(pivot Item, iterator ItemIterator) {
|
||||
t.ascendLessThan(t.root, pivot, iterator)
|
||||
}
|
||||
|
||||
func (t *LLRB) ascendLessThan(h *Node, pivot Item, iterator ItemIterator) bool {
|
||||
if h == nil {
|
||||
return true
|
||||
}
|
||||
if !t.ascendLessThan(h.Left, pivot, iterator) {
|
||||
return false
|
||||
}
|
||||
if !iterator(h.Item) {
|
||||
return false
|
||||
}
|
||||
if less(h.Item, pivot) {
|
||||
return t.ascendLessThan(h.Left, pivot, iterator)
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// DescendLessOrEqual will call iterator once for each element less than the
|
||||
// pivot in descending order. It will stop whenever the iterator returns false.
|
||||
func (t *LLRB) DescendLessOrEqual(pivot Item, iterator ItemIterator) {
|
||||
t.descendLessOrEqual(t.root, pivot, iterator)
|
||||
}
|
||||
|
||||
func (t *LLRB) descendLessOrEqual(h *Node, pivot Item, iterator ItemIterator) bool {
|
||||
if h == nil {
|
||||
return true
|
||||
}
|
||||
if less(h.Item, pivot) || !less(pivot, h.Item) {
|
||||
if !t.descendLessOrEqual(h.Right, pivot, iterator) {
|
||||
return false
|
||||
}
|
||||
if !iterator(h.Item) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return t.descendLessOrEqual(h.Left, pivot, iterator)
|
||||
}
|
|
@ -0,0 +1,46 @@
|
|||
// Copyright 2010 Petar Maymounkov. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package llrb
|
||||
|
||||
// GetHeight() returns an item in the tree with key @key, and it's height in the tree
|
||||
func (t *LLRB) GetHeight(key Item) (result Item, depth int) {
|
||||
return t.getHeight(t.root, key)
|
||||
}
|
||||
|
||||
func (t *LLRB) getHeight(h *Node, item Item) (Item, int) {
|
||||
if h == nil {
|
||||
return nil, 0
|
||||
}
|
||||
if less(item, h.Item) {
|
||||
result, depth := t.getHeight(h.Left, item)
|
||||
return result, depth + 1
|
||||
}
|
||||
if less(h.Item, item) {
|
||||
result, depth := t.getHeight(h.Right, item)
|
||||
return result, depth + 1
|
||||
}
|
||||
return h.Item, 0
|
||||
}
|
||||
|
||||
// HeightStats() returns the average and standard deviation of the height
|
||||
// of elements in the tree
|
||||
func (t *LLRB) HeightStats() (avg, stddev float64) {
|
||||
av := &avgVar{}
|
||||
heightStats(t.root, 0, av)
|
||||
return av.GetAvg(), av.GetStdDev()
|
||||
}
|
||||
|
||||
func heightStats(h *Node, d int, av *avgVar) {
|
||||
if h == nil {
|
||||
return
|
||||
}
|
||||
av.Add(float64(d))
|
||||
if h.Left != nil {
|
||||
heightStats(h.Left, d+1, av)
|
||||
}
|
||||
if h.Right != nil {
|
||||
heightStats(h.Right, d+1, av)
|
||||
}
|
||||
}
|
|
@ -0,0 +1,456 @@
|
|||
// Copyright 2010 Petar Maymounkov. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// A Left-Leaning Red-Black (LLRB) implementation of 2-3 balanced binary search trees,
|
||||
// based on the following work:
|
||||
//
|
||||
// http://www.cs.princeton.edu/~rs/talks/LLRB/08Penn.pdf
|
||||
// http://www.cs.princeton.edu/~rs/talks/LLRB/LLRB.pdf
|
||||
// http://www.cs.princeton.edu/~rs/talks/LLRB/Java/RedBlackBST.java
|
||||
//
|
||||
// 2-3 trees (and the run-time equivalent 2-3-4 trees) are the de facto standard BST
|
||||
// algoritms found in implementations of Python, Java, and other libraries. The LLRB
|
||||
// implementation of 2-3 trees is a recent improvement on the traditional implementation,
|
||||
// observed and documented by Robert Sedgewick.
|
||||
//
|
||||
package llrb
|
||||
|
||||
// Tree is a Left-Leaning Red-Black (LLRB) implementation of 2-3 trees
|
||||
type LLRB struct {
|
||||
count int
|
||||
root *Node
|
||||
}
|
||||
|
||||
type Node struct {
|
||||
Item
|
||||
Left, Right *Node // Pointers to left and right child nodes
|
||||
Black bool // If set, the color of the link (incoming from the parent) is black
|
||||
// In the LLRB, new nodes are always red, hence the zero-value for node
|
||||
}
|
||||
|
||||
type Item interface {
|
||||
Less(than Item) bool
|
||||
}
|
||||
|
||||
//
|
||||
func less(x, y Item) bool {
|
||||
if x == pinf {
|
||||
return false
|
||||
}
|
||||
if x == ninf {
|
||||
return true
|
||||
}
|
||||
return x.Less(y)
|
||||
}
|
||||
|
||||
// Inf returns an Item that is "bigger than" any other item, if sign is positive.
|
||||
// Otherwise it returns an Item that is "smaller than" any other item.
|
||||
func Inf(sign int) Item {
|
||||
if sign == 0 {
|
||||
panic("sign")
|
||||
}
|
||||
if sign > 0 {
|
||||
return pinf
|
||||
}
|
||||
return ninf
|
||||
}
|
||||
|
||||
var (
|
||||
ninf = nInf{}
|
||||
pinf = pInf{}
|
||||
)
|
||||
|
||||
type nInf struct{}
|
||||
|
||||
func (nInf) Less(Item) bool {
|
||||
return true
|
||||
}
|
||||
|
||||
type pInf struct{}
|
||||
|
||||
func (pInf) Less(Item) bool {
|
||||
return false
|
||||
}
|
||||
|
||||
// New() allocates a new tree
|
||||
func New() *LLRB {
|
||||
return &LLRB{}
|
||||
}
|
||||
|
||||
// SetRoot sets the root node of the tree.
|
||||
// It is intended to be used by functions that deserialize the tree.
|
||||
func (t *LLRB) SetRoot(r *Node) {
|
||||
t.root = r
|
||||
}
|
||||
|
||||
// Root returns the root node of the tree.
|
||||
// It is intended to be used by functions that serialize the tree.
|
||||
func (t *LLRB) Root() *Node {
|
||||
return t.root
|
||||
}
|
||||
|
||||
// Len returns the number of nodes in the tree.
|
||||
func (t *LLRB) Len() int { return t.count }
|
||||
|
||||
// Has returns true if the tree contains an element whose order is the same as that of key.
|
||||
func (t *LLRB) Has(key Item) bool {
|
||||
return t.Get(key) != nil
|
||||
}
|
||||
|
||||
// Get retrieves an element from the tree whose order is the same as that of key.
|
||||
func (t *LLRB) Get(key Item) Item {
|
||||
h := t.root
|
||||
for h != nil {
|
||||
switch {
|
||||
case less(key, h.Item):
|
||||
h = h.Left
|
||||
case less(h.Item, key):
|
||||
h = h.Right
|
||||
default:
|
||||
return h.Item
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Min returns the minimum element in the tree.
|
||||
func (t *LLRB) Min() Item {
|
||||
h := t.root
|
||||
if h == nil {
|
||||
return nil
|
||||
}
|
||||
for h.Left != nil {
|
||||
h = h.Left
|
||||
}
|
||||
return h.Item
|
||||
}
|
||||
|
||||
// Max returns the maximum element in the tree.
|
||||
func (t *LLRB) Max() Item {
|
||||
h := t.root
|
||||
if h == nil {
|
||||
return nil
|
||||
}
|
||||
for h.Right != nil {
|
||||
h = h.Right
|
||||
}
|
||||
return h.Item
|
||||
}
|
||||
|
||||
func (t *LLRB) ReplaceOrInsertBulk(items ...Item) {
|
||||
for _, i := range items {
|
||||
t.ReplaceOrInsert(i)
|
||||
}
|
||||
}
|
||||
|
||||
func (t *LLRB) InsertNoReplaceBulk(items ...Item) {
|
||||
for _, i := range items {
|
||||
t.InsertNoReplace(i)
|
||||
}
|
||||
}
|
||||
|
||||
// ReplaceOrInsert inserts item into the tree. If an existing
|
||||
// element has the same order, it is removed from the tree and returned.
|
||||
func (t *LLRB) ReplaceOrInsert(item Item) Item {
|
||||
if item == nil {
|
||||
panic("inserting nil item")
|
||||
}
|
||||
var replaced Item
|
||||
t.root, replaced = t.replaceOrInsert(t.root, item)
|
||||
t.root.Black = true
|
||||
if replaced == nil {
|
||||
t.count++
|
||||
}
|
||||
return replaced
|
||||
}
|
||||
|
||||
func (t *LLRB) replaceOrInsert(h *Node, item Item) (*Node, Item) {
|
||||
if h == nil {
|
||||
return newNode(item), nil
|
||||
}
|
||||
|
||||
h = walkDownRot23(h)
|
||||
|
||||
var replaced Item
|
||||
if less(item, h.Item) { // BUG
|
||||
h.Left, replaced = t.replaceOrInsert(h.Left, item)
|
||||
} else if less(h.Item, item) {
|
||||
h.Right, replaced = t.replaceOrInsert(h.Right, item)
|
||||
} else {
|
||||
replaced, h.Item = h.Item, item
|
||||
}
|
||||
|
||||
h = walkUpRot23(h)
|
||||
|
||||
return h, replaced
|
||||
}
|
||||
|
||||
// InsertNoReplace inserts item into the tree. If an existing
|
||||
// element has the same order, both elements remain in the tree.
|
||||
func (t *LLRB) InsertNoReplace(item Item) {
|
||||
if item == nil {
|
||||
panic("inserting nil item")
|
||||
}
|
||||
t.root = t.insertNoReplace(t.root, item)
|
||||
t.root.Black = true
|
||||
t.count++
|
||||
}
|
||||
|
||||
func (t *LLRB) insertNoReplace(h *Node, item Item) *Node {
|
||||
if h == nil {
|
||||
return newNode(item)
|
||||
}
|
||||
|
||||
h = walkDownRot23(h)
|
||||
|
||||
if less(item, h.Item) {
|
||||
h.Left = t.insertNoReplace(h.Left, item)
|
||||
} else {
|
||||
h.Right = t.insertNoReplace(h.Right, item)
|
||||
}
|
||||
|
||||
return walkUpRot23(h)
|
||||
}
|
||||
|
||||
// Rotation driver routines for 2-3 algorithm
|
||||
|
||||
func walkDownRot23(h *Node) *Node { return h }
|
||||
|
||||
func walkUpRot23(h *Node) *Node {
|
||||
if isRed(h.Right) && !isRed(h.Left) {
|
||||
h = rotateLeft(h)
|
||||
}
|
||||
|
||||
if isRed(h.Left) && isRed(h.Left.Left) {
|
||||
h = rotateRight(h)
|
||||
}
|
||||
|
||||
if isRed(h.Left) && isRed(h.Right) {
|
||||
flip(h)
|
||||
}
|
||||
|
||||
return h
|
||||
}
|
||||
|
||||
// Rotation driver routines for 2-3-4 algorithm
|
||||
|
||||
func walkDownRot234(h *Node) *Node {
|
||||
if isRed(h.Left) && isRed(h.Right) {
|
||||
flip(h)
|
||||
}
|
||||
|
||||
return h
|
||||
}
|
||||
|
||||
func walkUpRot234(h *Node) *Node {
|
||||
if isRed(h.Right) && !isRed(h.Left) {
|
||||
h = rotateLeft(h)
|
||||
}
|
||||
|
||||
if isRed(h.Left) && isRed(h.Left.Left) {
|
||||
h = rotateRight(h)
|
||||
}
|
||||
|
||||
return h
|
||||
}
|
||||
|
||||
// DeleteMin deletes the minimum element in the tree and returns the
|
||||
// deleted item or nil otherwise.
|
||||
func (t *LLRB) DeleteMin() Item {
|
||||
var deleted Item
|
||||
t.root, deleted = deleteMin(t.root)
|
||||
if t.root != nil {
|
||||
t.root.Black = true
|
||||
}
|
||||
if deleted != nil {
|
||||
t.count--
|
||||
}
|
||||
return deleted
|
||||
}
|
||||
|
||||
// deleteMin code for LLRB 2-3 trees
|
||||
func deleteMin(h *Node) (*Node, Item) {
|
||||
if h == nil {
|
||||
return nil, nil
|
||||
}
|
||||
if h.Left == nil {
|
||||
return nil, h.Item
|
||||
}
|
||||
|
||||
if !isRed(h.Left) && !isRed(h.Left.Left) {
|
||||
h = moveRedLeft(h)
|
||||
}
|
||||
|
||||
var deleted Item
|
||||
h.Left, deleted = deleteMin(h.Left)
|
||||
|
||||
return fixUp(h), deleted
|
||||
}
|
||||
|
||||
// DeleteMax deletes the maximum element in the tree and returns
|
||||
// the deleted item or nil otherwise
|
||||
func (t *LLRB) DeleteMax() Item {
|
||||
var deleted Item
|
||||
t.root, deleted = deleteMax(t.root)
|
||||
if t.root != nil {
|
||||
t.root.Black = true
|
||||
}
|
||||
if deleted != nil {
|
||||
t.count--
|
||||
}
|
||||
return deleted
|
||||
}
|
||||
|
||||
func deleteMax(h *Node) (*Node, Item) {
|
||||
if h == nil {
|
||||
return nil, nil
|
||||
}
|
||||
if isRed(h.Left) {
|
||||
h = rotateRight(h)
|
||||
}
|
||||
if h.Right == nil {
|
||||
return nil, h.Item
|
||||
}
|
||||
if !isRed(h.Right) && !isRed(h.Right.Left) {
|
||||
h = moveRedRight(h)
|
||||
}
|
||||
var deleted Item
|
||||
h.Right, deleted = deleteMax(h.Right)
|
||||
|
||||
return fixUp(h), deleted
|
||||
}
|
||||
|
||||
// Delete deletes an item from the tree whose key equals key.
|
||||
// The deleted item is return, otherwise nil is returned.
|
||||
func (t *LLRB) Delete(key Item) Item {
|
||||
var deleted Item
|
||||
t.root, deleted = t.delete(t.root, key)
|
||||
if t.root != nil {
|
||||
t.root.Black = true
|
||||
}
|
||||
if deleted != nil {
|
||||
t.count--
|
||||
}
|
||||
return deleted
|
||||
}
|
||||
|
||||
func (t *LLRB) delete(h *Node, item Item) (*Node, Item) {
|
||||
var deleted Item
|
||||
if h == nil {
|
||||
return nil, nil
|
||||
}
|
||||
if less(item, h.Item) {
|
||||
if h.Left == nil { // item not present. Nothing to delete
|
||||
return h, nil
|
||||
}
|
||||
if !isRed(h.Left) && !isRed(h.Left.Left) {
|
||||
h = moveRedLeft(h)
|
||||
}
|
||||
h.Left, deleted = t.delete(h.Left, item)
|
||||
} else {
|
||||
if isRed(h.Left) {
|
||||
h = rotateRight(h)
|
||||
}
|
||||
// If @item equals @h.Item and no right children at @h
|
||||
if !less(h.Item, item) && h.Right == nil {
|
||||
return nil, h.Item
|
||||
}
|
||||
// PETAR: Added 'h.Right != nil' below
|
||||
if h.Right != nil && !isRed(h.Right) && !isRed(h.Right.Left) {
|
||||
h = moveRedRight(h)
|
||||
}
|
||||
// If @item equals @h.Item, and (from above) 'h.Right != nil'
|
||||
if !less(h.Item, item) {
|
||||
var subDeleted Item
|
||||
h.Right, subDeleted = deleteMin(h.Right)
|
||||
if subDeleted == nil {
|
||||
panic("logic")
|
||||
}
|
||||
deleted, h.Item = h.Item, subDeleted
|
||||
} else { // Else, @item is bigger than @h.Item
|
||||
h.Right, deleted = t.delete(h.Right, item)
|
||||
}
|
||||
}
|
||||
|
||||
return fixUp(h), deleted
|
||||
}
|
||||
|
||||
// Internal node manipulation routines
|
||||
|
||||
func newNode(item Item) *Node { return &Node{Item: item} }
|
||||
|
||||
func isRed(h *Node) bool {
|
||||
if h == nil {
|
||||
return false
|
||||
}
|
||||
return !h.Black
|
||||
}
|
||||
|
||||
func rotateLeft(h *Node) *Node {
|
||||
x := h.Right
|
||||
if x.Black {
|
||||
panic("rotating a black link")
|
||||
}
|
||||
h.Right = x.Left
|
||||
x.Left = h
|
||||
x.Black = h.Black
|
||||
h.Black = false
|
||||
return x
|
||||
}
|
||||
|
||||
func rotateRight(h *Node) *Node {
|
||||
x := h.Left
|
||||
if x.Black {
|
||||
panic("rotating a black link")
|
||||
}
|
||||
h.Left = x.Right
|
||||
x.Right = h
|
||||
x.Black = h.Black
|
||||
h.Black = false
|
||||
return x
|
||||
}
|
||||
|
||||
// REQUIRE: Left and Right children must be present
|
||||
func flip(h *Node) {
|
||||
h.Black = !h.Black
|
||||
h.Left.Black = !h.Left.Black
|
||||
h.Right.Black = !h.Right.Black
|
||||
}
|
||||
|
||||
// REQUIRE: Left and Right children must be present
|
||||
func moveRedLeft(h *Node) *Node {
|
||||
flip(h)
|
||||
if isRed(h.Right.Left) {
|
||||
h.Right = rotateRight(h.Right)
|
||||
h = rotateLeft(h)
|
||||
flip(h)
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
// REQUIRE: Left and Right children must be present
|
||||
func moveRedRight(h *Node) *Node {
|
||||
flip(h)
|
||||
if isRed(h.Left.Left) {
|
||||
h = rotateRight(h)
|
||||
flip(h)
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
func fixUp(h *Node) *Node {
|
||||
if isRed(h.Right) {
|
||||
h = rotateLeft(h)
|
||||
}
|
||||
|
||||
if isRed(h.Left) && isRed(h.Left.Left) {
|
||||
h = rotateRight(h)
|
||||
}
|
||||
|
||||
if isRed(h.Left) && isRed(h.Right) {
|
||||
flip(h)
|
||||
}
|
||||
|
||||
return h
|
||||
}
|
|
@ -0,0 +1,17 @@
|
|||
// Copyright 2010 Petar Maymounkov. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package llrb
|
||||
|
||||
type Int int
|
||||
|
||||
func (x Int) Less(than Item) bool {
|
||||
return x < than.(Int)
|
||||
}
|
||||
|
||||
type String string
|
||||
|
||||
func (x String) Less(than Item) bool {
|
||||
return x < than.(String)
|
||||
}
|
|
@ -1,6 +1,4 @@
|
|||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2014 Nate Finch
|
||||
Copyright (c) 2011-2012 Peter Bourgon
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
|
@ -9,13 +7,13 @@ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
The above copyright notice and this permission notice shall be included in
|
||||
all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
THE SOFTWARE.
|
|
@ -0,0 +1,64 @@
|
|||
package diskv
|
||||
|
||||
import (
|
||||
"compress/flate"
|
||||
"compress/gzip"
|
||||
"compress/zlib"
|
||||
"io"
|
||||
)
|
||||
|
||||
// Compression is an interface that Diskv uses to implement compression of
|
||||
// data. Writer takes a destination io.Writer and returns a WriteCloser that
|
||||
// compresses all data written through it. Reader takes a source io.Reader and
|
||||
// returns a ReadCloser that decompresses all data read through it. You may
|
||||
// define these methods on your own type, or use one of the NewCompression
|
||||
// helpers.
|
||||
type Compression interface {
|
||||
Writer(dst io.Writer) (io.WriteCloser, error)
|
||||
Reader(src io.Reader) (io.ReadCloser, error)
|
||||
}
|
||||
|
||||
// NewGzipCompression returns a Gzip-based Compression.
|
||||
func NewGzipCompression() Compression {
|
||||
return NewGzipCompressionLevel(flate.DefaultCompression)
|
||||
}
|
||||
|
||||
// NewGzipCompressionLevel returns a Gzip-based Compression with the given level.
|
||||
func NewGzipCompressionLevel(level int) Compression {
|
||||
return &genericCompression{
|
||||
wf: func(w io.Writer) (io.WriteCloser, error) { return gzip.NewWriterLevel(w, level) },
|
||||
rf: func(r io.Reader) (io.ReadCloser, error) { return gzip.NewReader(r) },
|
||||
}
|
||||
}
|
||||
|
||||
// NewZlibCompression returns a Zlib-based Compression.
|
||||
func NewZlibCompression() Compression {
|
||||
return NewZlibCompressionLevel(flate.DefaultCompression)
|
||||
}
|
||||
|
||||
// NewZlibCompressionLevel returns a Zlib-based Compression with the given level.
|
||||
func NewZlibCompressionLevel(level int) Compression {
|
||||
return NewZlibCompressionLevelDict(level, nil)
|
||||
}
|
||||
|
||||
// NewZlibCompressionLevelDict returns a Zlib-based Compression with the given
|
||||
// level, based on the given dictionary.
|
||||
func NewZlibCompressionLevelDict(level int, dict []byte) Compression {
|
||||
return &genericCompression{
|
||||
func(w io.Writer) (io.WriteCloser, error) { return zlib.NewWriterLevelDict(w, level, dict) },
|
||||
func(r io.Reader) (io.ReadCloser, error) { return zlib.NewReaderDict(r, dict) },
|
||||
}
|
||||
}
|
||||
|
||||
type genericCompression struct {
|
||||
wf func(w io.Writer) (io.WriteCloser, error)
|
||||
rf func(r io.Reader) (io.ReadCloser, error)
|
||||
}
|
||||
|
||||
func (g *genericCompression) Writer(dst io.Writer) (io.WriteCloser, error) {
|
||||
return g.wf(dst)
|
||||
}
|
||||
|
||||
func (g *genericCompression) Reader(src io.Reader) (io.ReadCloser, error) {
|
||||
return g.rf(src)
|
||||
}
|
|
@ -0,0 +1,624 @@
|
|||
// Diskv (disk-vee) is a simple, persistent, key-value store.
|
||||
// It stores all data flatly on the filesystem.
|
||||
|
||||
package diskv
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strings"
|
||||
"sync"
|
||||
"syscall"
|
||||
)
|
||||
|
||||
const (
|
||||
defaultBasePath = "diskv"
|
||||
defaultFilePerm os.FileMode = 0666
|
||||
defaultPathPerm os.FileMode = 0777
|
||||
)
|
||||
|
||||
var (
|
||||
defaultTransform = func(s string) []string { return []string{} }
|
||||
errCanceled = errors.New("canceled")
|
||||
errEmptyKey = errors.New("empty key")
|
||||
errBadKey = errors.New("bad key")
|
||||
errImportDirectory = errors.New("can't import a directory")
|
||||
)
|
||||
|
||||
// TransformFunction transforms a key into a slice of strings, with each
|
||||
// element in the slice representing a directory in the file path where the
|
||||
// key's entry will eventually be stored.
|
||||
//
|
||||
// For example, if TransformFunc transforms "abcdef" to ["ab", "cde", "f"],
|
||||
// the final location of the data file will be <basedir>/ab/cde/f/abcdef
|
||||
type TransformFunction func(s string) []string
|
||||
|
||||
// Options define a set of properties that dictate Diskv behavior.
|
||||
// All values are optional.
|
||||
type Options struct {
|
||||
BasePath string
|
||||
Transform TransformFunction
|
||||
CacheSizeMax uint64 // bytes
|
||||
PathPerm os.FileMode
|
||||
FilePerm os.FileMode
|
||||
// If TempDir is set, it will enable filesystem atomic writes by
|
||||
// writing temporary files to that location before being moved
|
||||
// to BasePath.
|
||||
// Note that TempDir MUST be on the same device/partition as
|
||||
// BasePath.
|
||||
TempDir string
|
||||
|
||||
Index Index
|
||||
IndexLess LessFunction
|
||||
|
||||
Compression Compression
|
||||
}
|
||||
|
||||
// Diskv implements the Diskv interface. You shouldn't construct Diskv
|
||||
// structures directly; instead, use the New constructor.
|
||||
type Diskv struct {
|
||||
Options
|
||||
mu sync.RWMutex
|
||||
cache map[string][]byte
|
||||
cacheSize uint64
|
||||
}
|
||||
|
||||
// New returns an initialized Diskv structure, ready to use.
|
||||
// If the path identified by baseDir already contains data,
|
||||
// it will be accessible, but not yet cached.
|
||||
func New(o Options) *Diskv {
|
||||
if o.BasePath == "" {
|
||||
o.BasePath = defaultBasePath
|
||||
}
|
||||
if o.Transform == nil {
|
||||
o.Transform = defaultTransform
|
||||
}
|
||||
if o.PathPerm == 0 {
|
||||
o.PathPerm = defaultPathPerm
|
||||
}
|
||||
if o.FilePerm == 0 {
|
||||
o.FilePerm = defaultFilePerm
|
||||
}
|
||||
|
||||
d := &Diskv{
|
||||
Options: o,
|
||||
cache: map[string][]byte{},
|
||||
cacheSize: 0,
|
||||
}
|
||||
|
||||
if d.Index != nil && d.IndexLess != nil {
|
||||
d.Index.Initialize(d.IndexLess, d.Keys(nil))
|
||||
}
|
||||
|
||||
return d
|
||||
}
|
||||
|
||||
// Write synchronously writes the key-value pair to disk, making it immediately
|
||||
// available for reads. Write relies on the filesystem to perform an eventual
|
||||
// sync to physical media. If you need stronger guarantees, see WriteStream.
|
||||
func (d *Diskv) Write(key string, val []byte) error {
|
||||
return d.WriteStream(key, bytes.NewBuffer(val), false)
|
||||
}
|
||||
|
||||
// WriteStream writes the data represented by the io.Reader to the disk, under
|
||||
// the provided key. If sync is true, WriteStream performs an explicit sync on
|
||||
// the file as soon as it's written.
|
||||
//
|
||||
// bytes.Buffer provides io.Reader semantics for basic data types.
|
||||
func (d *Diskv) WriteStream(key string, r io.Reader, sync bool) error {
|
||||
if len(key) <= 0 {
|
||||
return errEmptyKey
|
||||
}
|
||||
|
||||
d.mu.Lock()
|
||||
defer d.mu.Unlock()
|
||||
|
||||
return d.writeStreamWithLock(key, r, sync)
|
||||
}
|
||||
|
||||
// createKeyFileWithLock either creates the key file directly, or
|
||||
// creates a temporary file in TempDir if it is set.
|
||||
func (d *Diskv) createKeyFileWithLock(key string) (*os.File, error) {
|
||||
if d.TempDir != "" {
|
||||
if err := os.MkdirAll(d.TempDir, d.PathPerm); err != nil {
|
||||
return nil, fmt.Errorf("temp mkdir: %s", err)
|
||||
}
|
||||
f, err := ioutil.TempFile(d.TempDir, "")
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("temp file: %s", err)
|
||||
}
|
||||
|
||||
if err := f.Chmod(d.FilePerm); err != nil {
|
||||
f.Close() // error deliberately ignored
|
||||
os.Remove(f.Name()) // error deliberately ignored
|
||||
return nil, fmt.Errorf("chmod: %s", err)
|
||||
}
|
||||
return f, nil
|
||||
}
|
||||
|
||||
mode := os.O_WRONLY | os.O_CREATE | os.O_TRUNC // overwrite if exists
|
||||
f, err := os.OpenFile(d.completeFilename(key), mode, d.FilePerm)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("open file: %s", err)
|
||||
}
|
||||
return f, nil
|
||||
}
|
||||
|
||||
// writeStream does no input validation checking.
|
||||
func (d *Diskv) writeStreamWithLock(key string, r io.Reader, sync bool) error {
|
||||
if err := d.ensurePathWithLock(key); err != nil {
|
||||
return fmt.Errorf("ensure path: %s", err)
|
||||
}
|
||||
|
||||
f, err := d.createKeyFileWithLock(key)
|
||||
if err != nil {
|
||||
return fmt.Errorf("create key file: %s", err)
|
||||
}
|
||||
|
||||
wc := io.WriteCloser(&nopWriteCloser{f})
|
||||
if d.Compression != nil {
|
||||
wc, err = d.Compression.Writer(f)
|
||||
if err != nil {
|
||||
f.Close() // error deliberately ignored
|
||||
os.Remove(f.Name()) // error deliberately ignored
|
||||
return fmt.Errorf("compression writer: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
if _, err := io.Copy(wc, r); err != nil {
|
||||
f.Close() // error deliberately ignored
|
||||
os.Remove(f.Name()) // error deliberately ignored
|
||||
return fmt.Errorf("i/o copy: %s", err)
|
||||
}
|
||||
|
||||
if err := wc.Close(); err != nil {
|
||||
f.Close() // error deliberately ignored
|
||||
os.Remove(f.Name()) // error deliberately ignored
|
||||
return fmt.Errorf("compression close: %s", err)
|
||||
}
|
||||
|
||||
if sync {
|
||||
if err := f.Sync(); err != nil {
|
||||
f.Close() // error deliberately ignored
|
||||
os.Remove(f.Name()) // error deliberately ignored
|
||||
return fmt.Errorf("file sync: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
if err := f.Close(); err != nil {
|
||||
return fmt.Errorf("file close: %s", err)
|
||||
}
|
||||
|
||||
if f.Name() != d.completeFilename(key) {
|
||||
if err := os.Rename(f.Name(), d.completeFilename(key)); err != nil {
|
||||
os.Remove(f.Name()) // error deliberately ignored
|
||||
return fmt.Errorf("rename: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
if d.Index != nil {
|
||||
d.Index.Insert(key)
|
||||
}
|
||||
|
||||
d.bustCacheWithLock(key) // cache only on read
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Import imports the source file into diskv under the destination key. If the
|
||||
// destination key already exists, it's overwritten. If move is true, the
|
||||
// source file is removed after a successful import.
|
||||
func (d *Diskv) Import(srcFilename, dstKey string, move bool) (err error) {
|
||||
if dstKey == "" {
|
||||
return errEmptyKey
|
||||
}
|
||||
|
||||
if fi, err := os.Stat(srcFilename); err != nil {
|
||||
return err
|
||||
} else if fi.IsDir() {
|
||||
return errImportDirectory
|
||||
}
|
||||
|
||||
d.mu.Lock()
|
||||
defer d.mu.Unlock()
|
||||
|
||||
if err := d.ensurePathWithLock(dstKey); err != nil {
|
||||
return fmt.Errorf("ensure path: %s", err)
|
||||
}
|
||||
|
||||
if move {
|
||||
if err := syscall.Rename(srcFilename, d.completeFilename(dstKey)); err == nil {
|
||||
d.bustCacheWithLock(dstKey)
|
||||
return nil
|
||||
} else if err != syscall.EXDEV {
|
||||
// If it failed due to being on a different device, fall back to copying
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
f, err := os.Open(srcFilename)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
err = d.writeStreamWithLock(dstKey, f, false)
|
||||
if err == nil && move {
|
||||
err = os.Remove(srcFilename)
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
// Read reads the key and returns the value.
|
||||
// If the key is available in the cache, Read won't touch the disk.
|
||||
// If the key is not in the cache, Read will have the side-effect of
|
||||
// lazily caching the value.
|
||||
func (d *Diskv) Read(key string) ([]byte, error) {
|
||||
rc, err := d.ReadStream(key, false)
|
||||
if err != nil {
|
||||
return []byte{}, err
|
||||
}
|
||||
defer rc.Close()
|
||||
return ioutil.ReadAll(rc)
|
||||
}
|
||||
|
||||
// ReadStream reads the key and returns the value (data) as an io.ReadCloser.
|
||||
// If the value is cached from a previous read, and direct is false,
|
||||
// ReadStream will use the cached value. Otherwise, it will return a handle to
|
||||
// the file on disk, and cache the data on read.
|
||||
//
|
||||
// If direct is true, ReadStream will lazily delete any cached value for the
|
||||
// key, and return a direct handle to the file on disk.
|
||||
//
|
||||
// If compression is enabled, ReadStream taps into the io.Reader stream prior
|
||||
// to decompression, and caches the compressed data.
|
||||
func (d *Diskv) ReadStream(key string, direct bool) (io.ReadCloser, error) {
|
||||
d.mu.RLock()
|
||||
defer d.mu.RUnlock()
|
||||
|
||||
if val, ok := d.cache[key]; ok {
|
||||
if !direct {
|
||||
buf := bytes.NewBuffer(val)
|
||||
if d.Compression != nil {
|
||||
return d.Compression.Reader(buf)
|
||||
}
|
||||
return ioutil.NopCloser(buf), nil
|
||||
}
|
||||
|
||||
go func() {
|
||||
d.mu.Lock()
|
||||
defer d.mu.Unlock()
|
||||
d.uncacheWithLock(key, uint64(len(val)))
|
||||
}()
|
||||
}
|
||||
|
||||
return d.readWithRLock(key)
|
||||
}
|
||||
|
||||
// read ignores the cache, and returns an io.ReadCloser representing the
|
||||
// decompressed data for the given key, streamed from the disk. Clients should
|
||||
// acquire a read lock on the Diskv and check the cache themselves before
|
||||
// calling read.
|
||||
func (d *Diskv) readWithRLock(key string) (io.ReadCloser, error) {
|
||||
filename := d.completeFilename(key)
|
||||
|
||||
fi, err := os.Stat(filename)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if fi.IsDir() {
|
||||
return nil, os.ErrNotExist
|
||||
}
|
||||
|
||||
f, err := os.Open(filename)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var r io.Reader
|
||||
if d.CacheSizeMax > 0 {
|
||||
r = newSiphon(f, d, key)
|
||||
} else {
|
||||
r = &closingReader{f}
|
||||
}
|
||||
|
||||
var rc = io.ReadCloser(ioutil.NopCloser(r))
|
||||
if d.Compression != nil {
|
||||
rc, err = d.Compression.Reader(r)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
return rc, nil
|
||||
}
|
||||
|
||||
// closingReader provides a Reader that automatically closes the
|
||||
// embedded ReadCloser when it reaches EOF
|
||||
type closingReader struct {
|
||||
rc io.ReadCloser
|
||||
}
|
||||
|
||||
func (cr closingReader) Read(p []byte) (int, error) {
|
||||
n, err := cr.rc.Read(p)
|
||||
if err == io.EOF {
|
||||
if closeErr := cr.rc.Close(); closeErr != nil {
|
||||
return n, closeErr // close must succeed for Read to succeed
|
||||
}
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
// siphon is like a TeeReader: it copies all data read through it to an
|
||||
// internal buffer, and moves that buffer to the cache at EOF.
|
||||
type siphon struct {
|
||||
f *os.File
|
||||
d *Diskv
|
||||
key string
|
||||
buf *bytes.Buffer
|
||||
}
|
||||
|
||||
// newSiphon constructs a siphoning reader that represents the passed file.
|
||||
// When a successful series of reads ends in an EOF, the siphon will write
|
||||
// the buffered data to Diskv's cache under the given key.
|
||||
func newSiphon(f *os.File, d *Diskv, key string) io.Reader {
|
||||
return &siphon{
|
||||
f: f,
|
||||
d: d,
|
||||
key: key,
|
||||
buf: &bytes.Buffer{},
|
||||
}
|
||||
}
|
||||
|
||||
// Read implements the io.Reader interface for siphon.
|
||||
func (s *siphon) Read(p []byte) (int, error) {
|
||||
n, err := s.f.Read(p)
|
||||
|
||||
if err == nil {
|
||||
return s.buf.Write(p[0:n]) // Write must succeed for Read to succeed
|
||||
}
|
||||
|
||||
if err == io.EOF {
|
||||
s.d.cacheWithoutLock(s.key, s.buf.Bytes()) // cache may fail
|
||||
if closeErr := s.f.Close(); closeErr != nil {
|
||||
return n, closeErr // close must succeed for Read to succeed
|
||||
}
|
||||
return n, err
|
||||
}
|
||||
|
||||
return n, err
|
||||
}
|
||||
|
||||
// Erase synchronously erases the given key from the disk and the cache.
|
||||
func (d *Diskv) Erase(key string) error {
|
||||
d.mu.Lock()
|
||||
defer d.mu.Unlock()
|
||||
|
||||
d.bustCacheWithLock(key)
|
||||
|
||||
// erase from index
|
||||
if d.Index != nil {
|
||||
d.Index.Delete(key)
|
||||
}
|
||||
|
||||
// erase from disk
|
||||
filename := d.completeFilename(key)
|
||||
if s, err := os.Stat(filename); err == nil {
|
||||
if s.IsDir() {
|
||||
return errBadKey
|
||||
}
|
||||
if err = os.Remove(filename); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
// Return err as-is so caller can do os.IsNotExist(err).
|
||||
return err
|
||||
}
|
||||
|
||||
// clean up and return
|
||||
d.pruneDirsWithLock(key)
|
||||
return nil
|
||||
}
|
||||
|
||||
// EraseAll will delete all of the data from the store, both in the cache and on
|
||||
// the disk. Note that EraseAll doesn't distinguish diskv-related data from non-
|
||||
// diskv-related data. Care should be taken to always specify a diskv base
|
||||
// directory that is exclusively for diskv data.
|
||||
func (d *Diskv) EraseAll() error {
|
||||
d.mu.Lock()
|
||||
defer d.mu.Unlock()
|
||||
d.cache = make(map[string][]byte)
|
||||
d.cacheSize = 0
|
||||
if d.TempDir != "" {
|
||||
os.RemoveAll(d.TempDir) // errors ignored
|
||||
}
|
||||
return os.RemoveAll(d.BasePath)
|
||||
}
|
||||
|
||||
// Has returns true if the given key exists.
|
||||
func (d *Diskv) Has(key string) bool {
|
||||
d.mu.Lock()
|
||||
defer d.mu.Unlock()
|
||||
|
||||
if _, ok := d.cache[key]; ok {
|
||||
return true
|
||||
}
|
||||
|
||||
filename := d.completeFilename(key)
|
||||
s, err := os.Stat(filename)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
if s.IsDir() {
|
||||
return false
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// Keys returns a channel that will yield every key accessible by the store,
|
||||
// in undefined order. If a cancel channel is provided, closing it will
|
||||
// terminate and close the keys channel.
|
||||
func (d *Diskv) Keys(cancel <-chan struct{}) <-chan string {
|
||||
return d.KeysPrefix("", cancel)
|
||||
}
|
||||
|
||||
// KeysPrefix returns a channel that will yield every key accessible by the
|
||||
// store with the given prefix, in undefined order. If a cancel channel is
|
||||
// provided, closing it will terminate and close the keys channel. If the
|
||||
// provided prefix is the empty string, all keys will be yielded.
|
||||
func (d *Diskv) KeysPrefix(prefix string, cancel <-chan struct{}) <-chan string {
|
||||
var prepath string
|
||||
if prefix == "" {
|
||||
prepath = d.BasePath
|
||||
} else {
|
||||
prepath = d.pathFor(prefix)
|
||||
}
|
||||
c := make(chan string)
|
||||
go func() {
|
||||
filepath.Walk(prepath, walker(c, prefix, cancel))
|
||||
close(c)
|
||||
}()
|
||||
return c
|
||||
}
|
||||
|
||||
// walker returns a function which satisfies the filepath.WalkFunc interface.
|
||||
// It sends every non-directory file entry down the channel c.
|
||||
func walker(c chan<- string, prefix string, cancel <-chan struct{}) filepath.WalkFunc {
|
||||
return func(path string, info os.FileInfo, err error) error {
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if info.IsDir() || !strings.HasPrefix(info.Name(), prefix) {
|
||||
return nil // "pass"
|
||||
}
|
||||
|
||||
select {
|
||||
case c <- info.Name():
|
||||
case <-cancel:
|
||||
return errCanceled
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// pathFor returns the absolute path for location on the filesystem where the
|
||||
// data for the given key will be stored.
|
||||
func (d *Diskv) pathFor(key string) string {
|
||||
return filepath.Join(d.BasePath, filepath.Join(d.Transform(key)...))
|
||||
}
|
||||
|
||||
// ensurePathWithLock is a helper function that generates all necessary
|
||||
// directories on the filesystem for the given key.
|
||||
func (d *Diskv) ensurePathWithLock(key string) error {
|
||||
return os.MkdirAll(d.pathFor(key), d.PathPerm)
|
||||
}
|
||||
|
||||
// completeFilename returns the absolute path to the file for the given key.
|
||||
func (d *Diskv) completeFilename(key string) string {
|
||||
return filepath.Join(d.pathFor(key), key)
|
||||
}
|
||||
|
||||
// cacheWithLock attempts to cache the given key-value pair in the store's
|
||||
// cache. It can fail if the value is larger than the cache's maximum size.
|
||||
func (d *Diskv) cacheWithLock(key string, val []byte) error {
|
||||
valueSize := uint64(len(val))
|
||||
if err := d.ensureCacheSpaceWithLock(valueSize); err != nil {
|
||||
return fmt.Errorf("%s; not caching", err)
|
||||
}
|
||||
|
||||
// be very strict about memory guarantees
|
||||
if (d.cacheSize + valueSize) > d.CacheSizeMax {
|
||||
panic(fmt.Sprintf("failed to make room for value (%d/%d)", valueSize, d.CacheSizeMax))
|
||||
}
|
||||
|
||||
d.cache[key] = val
|
||||
d.cacheSize += valueSize
|
||||
return nil
|
||||
}
|
||||
|
||||
// cacheWithoutLock acquires the store's (write) mutex and calls cacheWithLock.
|
||||
func (d *Diskv) cacheWithoutLock(key string, val []byte) error {
|
||||
d.mu.Lock()
|
||||
defer d.mu.Unlock()
|
||||
return d.cacheWithLock(key, val)
|
||||
}
|
||||
|
||||
func (d *Diskv) bustCacheWithLock(key string) {
|
||||
if val, ok := d.cache[key]; ok {
|
||||
d.uncacheWithLock(key, uint64(len(val)))
|
||||
}
|
||||
}
|
||||
|
||||
func (d *Diskv) uncacheWithLock(key string, sz uint64) {
|
||||
d.cacheSize -= sz
|
||||
delete(d.cache, key)
|
||||
}
|
||||
|
||||
// pruneDirsWithLock deletes empty directories in the path walk leading to the
|
||||
// key k. Typically this function is called after an Erase is made.
|
||||
func (d *Diskv) pruneDirsWithLock(key string) error {
|
||||
pathlist := d.Transform(key)
|
||||
for i := range pathlist {
|
||||
dir := filepath.Join(d.BasePath, filepath.Join(pathlist[:len(pathlist)-i]...))
|
||||
|
||||
// thanks to Steven Blenkinsop for this snippet
|
||||
switch fi, err := os.Stat(dir); true {
|
||||
case err != nil:
|
||||
return err
|
||||
case !fi.IsDir():
|
||||
panic(fmt.Sprintf("corrupt dirstate at %s", dir))
|
||||
}
|
||||
|
||||
nlinks, err := filepath.Glob(filepath.Join(dir, "*"))
|
||||
if err != nil {
|
||||
return err
|
||||
} else if len(nlinks) > 0 {
|
||||
return nil // has subdirs -- do not prune
|
||||
}
|
||||
if err = os.Remove(dir); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// ensureCacheSpaceWithLock deletes entries from the cache in arbitrary order
|
||||
// until the cache has at least valueSize bytes available.
|
||||
func (d *Diskv) ensureCacheSpaceWithLock(valueSize uint64) error {
|
||||
if valueSize > d.CacheSizeMax {
|
||||
return fmt.Errorf("value size (%d bytes) too large for cache (%d bytes)", valueSize, d.CacheSizeMax)
|
||||
}
|
||||
|
||||
safe := func() bool { return (d.cacheSize + valueSize) <= d.CacheSizeMax }
|
||||
|
||||
for key, val := range d.cache {
|
||||
if safe() {
|
||||
break
|
||||
}
|
||||
|
||||
d.uncacheWithLock(key, uint64(len(val)))
|
||||
}
|
||||
|
||||
if !safe() {
|
||||
panic(fmt.Sprintf("%d bytes still won't fit in the cache! (max %d bytes)", valueSize, d.CacheSizeMax))
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// nopWriteCloser wraps an io.Writer and provides a no-op Close method to
|
||||
// satisfy the io.WriteCloser interface.
|
||||
type nopWriteCloser struct {
|
||||
io.Writer
|
||||
}
|
||||
|
||||
func (wc *nopWriteCloser) Write(p []byte) (int, error) { return wc.Writer.Write(p) }
|
||||
func (wc *nopWriteCloser) Close() error { return nil }
|
|
@ -0,0 +1,115 @@
|
|||
package diskv
|
||||
|
||||
import (
|
||||
"sync"
|
||||
|
||||
"github.com/google/btree"
|
||||
)
|
||||
|
||||
// Index is a generic interface for things that can
|
||||
// provide an ordered list of keys.
|
||||
type Index interface {
|
||||
Initialize(less LessFunction, keys <-chan string)
|
||||
Insert(key string)
|
||||
Delete(key string)
|
||||
Keys(from string, n int) []string
|
||||
}
|
||||
|
||||
// LessFunction is used to initialize an Index of keys in a specific order.
|
||||
type LessFunction func(string, string) bool
|
||||
|
||||
// btreeString is a custom data type that satisfies the BTree Less interface,
|
||||
// making the strings it wraps sortable by the BTree package.
|
||||
type btreeString struct {
|
||||
s string
|
||||
l LessFunction
|
||||
}
|
||||
|
||||
// Less satisfies the BTree.Less interface using the btreeString's LessFunction.
|
||||
func (s btreeString) Less(i btree.Item) bool {
|
||||
return s.l(s.s, i.(btreeString).s)
|
||||
}
|
||||
|
||||
// BTreeIndex is an implementation of the Index interface using google/btree.
|
||||
type BTreeIndex struct {
|
||||
sync.RWMutex
|
||||
LessFunction
|
||||
*btree.BTree
|
||||
}
|
||||
|
||||
// Initialize populates the BTree tree with data from the keys channel,
|
||||
// according to the passed less function. It's destructive to the BTreeIndex.
|
||||
func (i *BTreeIndex) Initialize(less LessFunction, keys <-chan string) {
|
||||
i.Lock()
|
||||
defer i.Unlock()
|
||||
i.LessFunction = less
|
||||
i.BTree = rebuild(less, keys)
|
||||
}
|
||||
|
||||
// Insert inserts the given key (only) into the BTree tree.
|
||||
func (i *BTreeIndex) Insert(key string) {
|
||||
i.Lock()
|
||||
defer i.Unlock()
|
||||
if i.BTree == nil || i.LessFunction == nil {
|
||||
panic("uninitialized index")
|
||||
}
|
||||
i.BTree.ReplaceOrInsert(btreeString{s: key, l: i.LessFunction})
|
||||
}
|
||||
|
||||
// Delete removes the given key (only) from the BTree tree.
|
||||
func (i *BTreeIndex) Delete(key string) {
|
||||
i.Lock()
|
||||
defer i.Unlock()
|
||||
if i.BTree == nil || i.LessFunction == nil {
|
||||
panic("uninitialized index")
|
||||
}
|
||||
i.BTree.Delete(btreeString{s: key, l: i.LessFunction})
|
||||
}
|
||||
|
||||
// Keys yields a maximum of n keys in order. If the passed 'from' key is empty,
|
||||
// Keys will return the first n keys. If the passed 'from' key is non-empty, the
|
||||
// first key in the returned slice will be the key that immediately follows the
|
||||
// passed key, in key order.
|
||||
func (i *BTreeIndex) Keys(from string, n int) []string {
|
||||
i.RLock()
|
||||
defer i.RUnlock()
|
||||
|
||||
if i.BTree == nil || i.LessFunction == nil {
|
||||
panic("uninitialized index")
|
||||
}
|
||||
|
||||
if i.BTree.Len() <= 0 {
|
||||
return []string{}
|
||||
}
|
||||
|
||||
btreeFrom := btreeString{s: from, l: i.LessFunction}
|
||||
skipFirst := true
|
||||
if len(from) <= 0 || !i.BTree.Has(btreeFrom) {
|
||||
// no such key, so fabricate an always-smallest item
|
||||
btreeFrom = btreeString{s: "", l: func(string, string) bool { return true }}
|
||||
skipFirst = false
|
||||
}
|
||||
|
||||
keys := []string{}
|
||||
iterator := func(i btree.Item) bool {
|
||||
keys = append(keys, i.(btreeString).s)
|
||||
return len(keys) < n
|
||||
}
|
||||
i.BTree.AscendGreaterOrEqual(btreeFrom, iterator)
|
||||
|
||||
if skipFirst && len(keys) > 0 {
|
||||
keys = keys[1:]
|
||||
}
|
||||
|
||||
return keys
|
||||
}
|
||||
|
||||
// rebuildIndex does the work of regenerating the index
|
||||
// with the given keys.
|
||||
func rebuild(less LessFunction, keys <-chan string) *btree.BTree {
|
||||
tree := btree.New(2)
|
||||
for key := range keys {
|
||||
tree.ReplaceOrInsert(btreeString{s: key, l: less})
|
||||
}
|
||||
return tree
|
||||
}
|
|
@ -1,7 +0,0 @@
|
|||
package concurrent
|
||||
|
||||
import "context"
|
||||
|
||||
type Executor interface {
|
||||
Go(handler func(ctx context.Context))
|
||||
}
|
|
@ -1,99 +0,0 @@
|
|||
package concurrent
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"runtime"
|
||||
"sync"
|
||||
"time"
|
||||
"runtime/debug"
|
||||
)
|
||||
|
||||
var LogInfo = func(event string, properties ...interface{}) {
|
||||
}
|
||||
|
||||
var LogPanic = func(recovered interface{}, properties ...interface{}) interface{} {
|
||||
fmt.Println(fmt.Sprintf("paniced: %v", recovered))
|
||||
debug.PrintStack()
|
||||
return recovered
|
||||
}
|
||||
|
||||
const StopSignal = "STOP!"
|
||||
|
||||
type UnboundedExecutor struct {
|
||||
ctx context.Context
|
||||
cancel context.CancelFunc
|
||||
activeGoroutinesMutex *sync.Mutex
|
||||
activeGoroutines map[string]int
|
||||
}
|
||||
|
||||
// GlobalUnboundedExecutor has the life cycle of the program itself
|
||||
// any goroutine want to be shutdown before main exit can be started from this executor
|
||||
var GlobalUnboundedExecutor = NewUnboundedExecutor()
|
||||
|
||||
func NewUnboundedExecutor() *UnboundedExecutor {
|
||||
ctx, cancel := context.WithCancel(context.TODO())
|
||||
return &UnboundedExecutor{
|
||||
ctx: ctx,
|
||||
cancel: cancel,
|
||||
activeGoroutinesMutex: &sync.Mutex{},
|
||||
activeGoroutines: map[string]int{},
|
||||
}
|
||||
}
|
||||
|
||||
func (executor *UnboundedExecutor) Go(handler func(ctx context.Context)) {
|
||||
_, file, line, _ := runtime.Caller(1)
|
||||
executor.activeGoroutinesMutex.Lock()
|
||||
defer executor.activeGoroutinesMutex.Unlock()
|
||||
startFrom := fmt.Sprintf("%s:%d", file, line)
|
||||
executor.activeGoroutines[startFrom] += 1
|
||||
go func() {
|
||||
defer func() {
|
||||
recovered := recover()
|
||||
if recovered != nil && recovered != StopSignal {
|
||||
LogPanic(recovered)
|
||||
}
|
||||
executor.activeGoroutinesMutex.Lock()
|
||||
defer executor.activeGoroutinesMutex.Unlock()
|
||||
executor.activeGoroutines[startFrom] -= 1
|
||||
}()
|
||||
handler(executor.ctx)
|
||||
}()
|
||||
}
|
||||
|
||||
func (executor *UnboundedExecutor) Stop() {
|
||||
executor.cancel()
|
||||
}
|
||||
|
||||
func (executor *UnboundedExecutor) StopAndWaitForever() {
|
||||
executor.StopAndWait(context.Background())
|
||||
}
|
||||
|
||||
func (executor *UnboundedExecutor) StopAndWait(ctx context.Context) {
|
||||
executor.cancel()
|
||||
for {
|
||||
fiveSeconds := time.NewTimer(time.Millisecond * 100)
|
||||
select {
|
||||
case <-fiveSeconds.C:
|
||||
case <-ctx.Done():
|
||||
return
|
||||
}
|
||||
if executor.checkGoroutines() {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (executor *UnboundedExecutor) checkGoroutines() bool {
|
||||
executor.activeGoroutinesMutex.Lock()
|
||||
defer executor.activeGoroutinesMutex.Unlock()
|
||||
for startFrom, count := range executor.activeGoroutines {
|
||||
if count > 0 {
|
||||
LogInfo("event!unbounded_executor.still waiting goroutines to quit",
|
||||
"startFrom", startFrom,
|
||||
"count", count)
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
|
@ -1,30 +0,0 @@
|
|||
package reflect2
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// DefaultTypeOfKind return the non aliased default type for the kind
|
||||
func DefaultTypeOfKind(kind reflect.Kind) Type {
|
||||
return kindTypes[kind]
|
||||
}
|
||||
|
||||
var kindTypes = map[reflect.Kind]Type{
|
||||
reflect.Bool: TypeOf(true),
|
||||
reflect.Uint8: TypeOf(uint8(0)),
|
||||
reflect.Int8: TypeOf(int8(0)),
|
||||
reflect.Uint16: TypeOf(uint16(0)),
|
||||
reflect.Int16: TypeOf(int16(0)),
|
||||
reflect.Uint32: TypeOf(uint32(0)),
|
||||
reflect.Int32: TypeOf(int32(0)),
|
||||
reflect.Uint64: TypeOf(uint64(0)),
|
||||
reflect.Int64: TypeOf(int64(0)),
|
||||
reflect.Uint: TypeOf(uint(0)),
|
||||
reflect.Int: TypeOf(int(0)),
|
||||
reflect.Float32: TypeOf(float32(0)),
|
||||
reflect.Float64: TypeOf(float64(0)),
|
||||
reflect.Uintptr: TypeOf(uintptr(0)),
|
||||
reflect.String: TypeOf(""),
|
||||
reflect.UnsafePointer: TypeOf(unsafe.Pointer(nil)),
|
||||
}
|
|
@ -1,13 +0,0 @@
|
|||
package reflect2
|
||||
|
||||
type safeStructType struct {
|
||||
safeType
|
||||
}
|
||||
|
||||
func (type2 *safeStructType) FieldByName(name string) StructField {
|
||||
field, found := type2.Type.FieldByName(name)
|
||||
if !found {
|
||||
panic("field " + name + " not found")
|
||||
}
|
||||
return &safeField{StructField: field}
|
||||
}
|
|
@ -1,27 +0,0 @@
|
|||
Copyright (c) 2013, Patrick Mezard
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in the
|
||||
documentation and/or other materials provided with the distribution.
|
||||
The names of its contributors may not be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
||||
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
||||
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
|
||||
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
@ -1,15 +0,0 @@
|
|||
ISC License
|
||||
|
||||
Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
|
||||
|
||||
Permission to use, copy, modify, and distribute this software for any
|
||||
purpose with or without fee is hereby granted, provided that the above
|
||||
copyright notice and this permission notice appear in all copies.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
||||
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
||||
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
||||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
||||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
||||
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
@ -1,22 +0,0 @@
|
|||
Copyright (c) 2012 - 2013 Mat Ryer and Tyler Bunnell
|
||||
|
||||
Please consider promoting this project if you find it useful.
|
||||
|
||||
Permission is hereby granted, free of charge, to any person
|
||||
obtaining a copy of this software and associated documentation
|
||||
files (the "Software"), to deal in the Software without restriction,
|
||||
including without limitation the rights to use, copy, modify, merge,
|
||||
publish, distribute, sublicense, and/or sell copies of the Software,
|
||||
and to permit persons to whom the Software is furnished to do so,
|
||||
subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included
|
||||
in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
||||
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
||||
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
|
||||
OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
|
||||
OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
Copyright 2018 The Kubernetes Authors.
|
||||
Copyright The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
Copyright 2016 The Kubernetes Authors.
|
||||
Copyright The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
|
@ -26,7 +26,7 @@ package v1beta1
|
|||
//
|
||||
// Those methods can be generated by using hack/update-generated-swagger-docs.sh
|
||||
|
||||
// AUTO-GENERATED FUNCTIONS START HERE
|
||||
// AUTO-GENERATED FUNCTIONS START HERE. DO NOT EDIT.
|
||||
var map_AdmissionRequest = map[string]string{
|
||||
"": "AdmissionRequest describes the admission.Attributes for the admission request.",
|
||||
"uid": "UID is an identifier for the individual request/response. It allows us to distinguish instances of requests which are otherwise identical (parallel requests, requests when earlier requests did not modify etc) The UID is meant to track the round trip (request/response) between the KAS and the WebHook, not the user request. It is suitable for correlating log entries between the webhook and apiserver, for either auditing or debugging.",
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
// +build !ignore_autogenerated
|
||||
|
||||
/*
|
||||
Copyright 2018 The Kubernetes Authors.
|
||||
Copyright The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
Copyright 2018 The Kubernetes Authors.
|
||||
Copyright The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
|
|
4
vendor/k8s.io/api/admissionregistration/v1alpha1/types_swagger_doc_generated.go
generated
vendored
4
vendor/k8s.io/api/admissionregistration/v1alpha1/types_swagger_doc_generated.go
generated
vendored
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
Copyright 2016 The Kubernetes Authors.
|
||||
Copyright The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
|
@ -26,7 +26,7 @@ package v1alpha1
|
|||
//
|
||||
// Those methods can be generated by using hack/update-generated-swagger-docs.sh
|
||||
|
||||
// AUTO-GENERATED FUNCTIONS START HERE
|
||||
// AUTO-GENERATED FUNCTIONS START HERE. DO NOT EDIT.
|
||||
var map_Initializer = map[string]string{
|
||||
"": "Initializer describes the name and the failure policy of an initializer, and what resources it applies to.",
|
||||
"name": "Name is the identifier of the initializer. It will be added to the object that needs to be initialized. Name should be fully qualified, e.g., alwayspullimages.kubernetes.io, where \"alwayspullimages\" is the name of the webhook, and kubernetes.io is the name of the organization. Required",
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
// +build !ignore_autogenerated
|
||||
|
||||
/*
|
||||
Copyright 2018 The Kubernetes Authors.
|
||||
Copyright The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
Copyright 2018 The Kubernetes Authors.
|
||||
Copyright The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
|
|
|
@ -254,9 +254,7 @@ type WebhookClientConfig struct {
|
|||
//
|
||||
// If the webhook is running within the cluster, then you should use `service`.
|
||||
//
|
||||
// If there is only one port open for the service, that port will be
|
||||
// used. If there are multiple ports open, port 443 will be used if it
|
||||
// is open, otherwise it is an error.
|
||||
// Port 443 will be used if it is open, otherwise it is an error.
|
||||
//
|
||||
// +optional
|
||||
Service *ServiceReference `json:"service" protobuf:"bytes,1,opt,name=service"`
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
/*
|
||||
Copyright 2016 The Kubernetes Authors.
|
||||
Copyright The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
|
@ -26,7 +26,7 @@ package v1beta1
|
|||
//
|
||||
// Those methods can be generated by using hack/update-generated-swagger-docs.sh
|
||||
|
||||
// AUTO-GENERATED FUNCTIONS START HERE
|
||||
// AUTO-GENERATED FUNCTIONS START HERE. DO NOT EDIT.
|
||||
var map_MutatingWebhookConfiguration = map[string]string{
|
||||
"": "MutatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and may change the object.",
|
||||
"metadata": "Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata.",
|
||||
|
@ -114,7 +114,7 @@ func (Webhook) SwaggerDoc() map[string]string {
|
|||
var map_WebhookClientConfig = map[string]string{
|
||||
"": "WebhookClientConfig contains the information to make a TLS connection with the webhook",
|
||||
"url": "`url` gives the location of the webhook, in standard URL form (`[scheme://]host:port/path`). Exactly one of `url` or `service` must be specified.\n\nThe `host` should not refer to a service running in the cluster; use the `service` field instead. The host might be resolved via external DNS in some apiservers (e.g., `kube-apiserver` cannot resolve in-cluster DNS as that would be a layering violation). `host` may also be an IP address.\n\nPlease note that using `localhost` or `127.0.0.1` as a `host` is risky unless you take great care to run this webhook on all hosts which run an apiserver which might need to make calls to this webhook. Such installs are likely to be non-portable, i.e., not easy to turn up in a new cluster.\n\nThe scheme must be \"https\"; the URL must begin with \"https://\".\n\nA path is optional, and if present may be any string permissible in a URL. You may use the path to pass an arbitrary string to the webhook, for example, a cluster identifier.\n\nAttempting to use a user or basic auth e.g. \"user:password@\" is not allowed. Fragments (\"#...\") and query parameters (\"?...\") are not allowed, either.",
|
||||
"service": "`service` is a reference to the service for this webhook. Either `service` or `url` must be specified.\n\nIf the webhook is running within the cluster, then you should use `service`.\n\nIf there is only one port open for the service, that port will be used. If there are multiple ports open, port 443 will be used if it is open, otherwise it is an error.",
|
||||
"service": "`service` is a reference to the service for this webhook. Either `service` or `url` must be specified.\n\nIf the webhook is running within the cluster, then you should use `service`.\n\nPort 443 will be used if it is open, otherwise it is an error.",
|
||||
"caBundle": "`caBundle` is a PEM encoded CA bundle which will be used to validate the webhook's server certificate. Required.",
|
||||
}
|
||||
|
||||
|
|
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue