mirror of https://github.com/grpc/grpc-go.git
235 lines
12 KiB
Go
235 lines
12 KiB
Go
/*
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*
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* Copyright 2021 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package grpc
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import (
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"context"
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"errors"
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"fmt"
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"net"
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"net/url"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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"google.golang.org/grpc/credentials/insecure"
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"google.golang.org/grpc/internal/testutils"
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"google.golang.org/grpc/resolver"
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)
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func (s) TestParsedTarget_Success_WithoutCustomDialer(t *testing.T) {
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defScheme := resolver.GetDefaultScheme()
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tests := []struct {
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target string
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badScheme bool
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wantParsed resolver.Target
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}{
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// No scheme is specified.
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{target: "://", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "://"))}},
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{target: ":///", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, ":///"))}},
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{target: "://a/", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "://a/"))}},
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{target: ":///a", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, ":///a"))}},
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{target: "://a/b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "://a/b"))}},
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{target: "/", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "/"))}},
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{target: "a/b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a/b"))}},
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{target: "a//b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a//b"))}},
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{target: "google.com", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "google.com"))}},
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{target: "google.com/?a=b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "google.com/?a=b"))}},
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{target: "/unix/socket/address", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "/unix/socket/address"))}},
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// An unregistered scheme is specified.
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{target: "a:///", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a:///"))}},
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{target: "a://b/", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a://b/"))}},
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{target: "a:///b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a:///b"))}},
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{target: "a://b/c", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a://b/c"))}},
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{target: "a:b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a:b"))}},
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{target: "a:/b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a:/b"))}},
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{target: "a://b", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "a://b"))}},
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// A registered scheme is specified.
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{target: "dns:///google.com", wantParsed: resolver.Target{Scheme: "dns", Authority: "", URL: *testutils.MustParseURL("dns:///google.com")}},
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{target: "dns://a.server.com/google.com", wantParsed: resolver.Target{Scheme: "dns", Authority: "a.server.com", URL: *testutils.MustParseURL("dns://a.server.com/google.com")}},
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{target: "dns://a.server.com/google.com/?a=b", wantParsed: resolver.Target{Scheme: "dns", Authority: "a.server.com", URL: *testutils.MustParseURL("dns://a.server.com/google.com/?a=b")}},
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{target: "unix:///a/b/c", wantParsed: resolver.Target{Scheme: "unix", Authority: "", URL: *testutils.MustParseURL("unix:///a/b/c")}},
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{target: "unix-abstract:a/b/c", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:a/b/c")}},
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{target: "unix-abstract:a b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:a b")}},
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{target: "unix-abstract:a:b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:a:b")}},
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{target: "unix-abstract:a-b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:a-b")}},
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{target: "unix-abstract:/ a///://::!@#$%25^&*()b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:/ a///://::!@#$%25^&*()b")}},
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{target: "unix-abstract:passthrough:abc", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:passthrough:abc")}},
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{target: "unix-abstract:unix:///abc", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:unix:///abc")}},
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{target: "unix-abstract:///a/b/c", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:///a/b/c")}},
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{target: "unix-abstract:///", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", URL: *testutils.MustParseURL("unix-abstract:///")}},
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{target: "passthrough:///unix:///a/b/c", wantParsed: resolver.Target{Scheme: "passthrough", Authority: "", URL: *testutils.MustParseURL("passthrough:///unix:///a/b/c")}},
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// Cases for `scheme:absolute-path`.
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{target: "dns:/a/b/c", wantParsed: resolver.Target{Scheme: "dns", Authority: "", URL: *testutils.MustParseURL("dns:/a/b/c")}},
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{target: "unregistered:/a/b/c", badScheme: true, wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL("unregistered:/a/b/c")}},
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}
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for _, test := range tests {
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t.Run(test.target, func(t *testing.T) {
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target := test.target
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if test.badScheme {
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target = defScheme + ":///" + target
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}
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url, err := url.Parse(target)
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if err != nil {
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t.Fatalf("Unexpected error parsing URL: %v", err)
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}
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test.wantParsed.URL = *url
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cc, err := Dial(test.target, WithTransportCredentials(insecure.NewCredentials()))
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if err != nil {
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t.Fatalf("Dial(%q) failed: %v", test.target, err)
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}
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defer cc.Close()
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if !cmp.Equal(cc.parsedTarget, test.wantParsed) {
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t.Errorf("cc.parsedTarget for dial target %q = %+v, want %+v", test.target, cc.parsedTarget, test.wantParsed)
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}
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})
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}
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}
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func (s) TestParsedTarget_Failure_WithoutCustomDialer(t *testing.T) {
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targets := []string{
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"",
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"unix://a/b/c",
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"unix://authority",
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"unix-abstract://authority/a/b/c",
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"unix-abstract://authority",
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}
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for _, target := range targets {
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t.Run(target, func(t *testing.T) {
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if cc, err := Dial(target, WithTransportCredentials(insecure.NewCredentials())); err == nil {
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defer cc.Close()
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t.Fatalf("Dial(%q) succeeded cc.parsedTarget = %+v, expected to fail", target, cc.parsedTarget)
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}
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})
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}
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}
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func (s) TestParsedTarget_WithCustomDialer(t *testing.T) {
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defScheme := resolver.GetDefaultScheme()
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tests := []struct {
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target string
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badScheme bool
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wantParsed resolver.Target
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wantDialerAddress string
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}{
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// unix:[local_path], unix:[/absolute], and unix://[/absolute] have
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// different behaviors with a custom dialer.
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{
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target: "unix:a/b/c",
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wantParsed: resolver.Target{Scheme: "unix", Authority: "", URL: *testutils.MustParseURL("unix:a/b/c")},
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wantDialerAddress: "unix:a/b/c",
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},
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{
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target: "unix:/a/b/c",
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wantParsed: resolver.Target{Scheme: "unix", Authority: "", URL: *testutils.MustParseURL("unix:/a/b/c")},
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wantDialerAddress: "unix:///a/b/c",
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},
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{
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target: "unix:///a/b/c",
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wantParsed: resolver.Target{Scheme: "unix", Authority: "", URL: *testutils.MustParseURL("unix:///a/b/c")},
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wantDialerAddress: "unix:///a/b/c",
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},
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{
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target: "dns:///127.0.0.1:50051",
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wantParsed: resolver.Target{Scheme: "dns", Authority: "", URL: *testutils.MustParseURL("dns:///127.0.0.1:50051")},
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wantDialerAddress: "127.0.0.1:50051",
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},
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{
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target: ":///127.0.0.1:50051",
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badScheme: true,
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wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, ":///127.0.0.1:50051"))},
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wantDialerAddress: ":///127.0.0.1:50051",
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},
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{
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target: "dns://authority/127.0.0.1:50051",
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wantParsed: resolver.Target{Scheme: "dns", Authority: "authority", URL: *testutils.MustParseURL("dns://authority/127.0.0.1:50051")},
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wantDialerAddress: "127.0.0.1:50051",
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},
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{
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target: "://authority/127.0.0.1:50051",
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badScheme: true,
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wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "://authority/127.0.0.1:50051"))},
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wantDialerAddress: "://authority/127.0.0.1:50051",
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},
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{
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target: "/unix/socket/address",
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badScheme: true,
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wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, "/unix/socket/address"))},
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wantDialerAddress: "/unix/socket/address",
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},
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{
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target: "",
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badScheme: true,
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wantParsed: resolver.Target{Scheme: defScheme, Authority: "", URL: *testutils.MustParseURL(fmt.Sprintf("%s:///%s", defScheme, ""))},
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wantDialerAddress: "",
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},
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{
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target: "passthrough://a.server.com/google.com",
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wantParsed: resolver.Target{Scheme: "passthrough", Authority: "a.server.com", URL: *testutils.MustParseURL("passthrough://a.server.com/google.com")},
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wantDialerAddress: "google.com",
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},
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}
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for _, test := range tests {
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t.Run(test.target, func(t *testing.T) {
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target := test.target
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if test.badScheme {
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target = defScheme + ":///" + target
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}
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url, err := url.Parse(target)
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if err != nil {
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t.Fatalf("Unexpected error parsing URL: %v", err)
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}
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test.wantParsed.URL = *url
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addrCh := make(chan string, 1)
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dialer := func(ctx context.Context, address string) (net.Conn, error) {
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addrCh <- address
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return nil, errors.New("dialer error")
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}
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cc, err := Dial(test.target, WithTransportCredentials(insecure.NewCredentials()), WithContextDialer(dialer))
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if err != nil {
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t.Fatalf("Dial(%q) failed: %v", test.target, err)
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}
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defer cc.Close()
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select {
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case addr := <-addrCh:
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if addr != test.wantDialerAddress {
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t.Fatalf("address in custom dialer is %q, want %q", addr, test.wantDialerAddress)
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}
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case <-time.After(time.Second):
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t.Fatal("timeout when waiting for custom dialer to be invoked")
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}
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if !cmp.Equal(cc.parsedTarget, test.wantParsed) {
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t.Errorf("cc.parsedTarget for dial target %q = %+v, want %+v", test.target, cc.parsedTarget, test.wantParsed)
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}
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})
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}
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}
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