mirror of https://github.com/kubernetes/kops.git
74 lines
2.3 KiB
Go
74 lines
2.3 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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package fuzzer
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import (
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"encoding/json"
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"fmt"
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"math/rand"
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"sigs.k8s.io/randfill"
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"k8s.io/apimachinery/pkg/runtime"
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runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
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kjson "k8s.io/apimachinery/pkg/util/json"
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)
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// FuzzerFuncs returns a list of func(*SomeType, c randfill.Continue) functions.
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type FuzzerFuncs func(codecs runtimeserializer.CodecFactory) []interface{}
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// FuzzerFor can randomly populate api objects that are destined for version.
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func FuzzerFor(funcs FuzzerFuncs, src rand.Source, codecs runtimeserializer.CodecFactory) *randfill.Filler {
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f := randfill.New().NilChance(.5).NumElements(0, 1)
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if src != nil {
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f.RandSource(src)
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}
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f.Funcs(funcs(codecs)...)
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return f
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}
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// MergeFuzzerFuncs will merge the given funcLists, overriding early funcs with later ones if there first
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// argument has the same type.
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func MergeFuzzerFuncs(funcs ...FuzzerFuncs) FuzzerFuncs {
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return FuzzerFuncs(func(codecs runtimeserializer.CodecFactory) []interface{} {
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result := []interface{}{}
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for _, f := range funcs {
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if f != nil {
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result = append(result, f(codecs)...)
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}
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}
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return result
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})
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}
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func NormalizeJSONRawExtension(ext *runtime.RawExtension) {
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if json.Valid(ext.Raw) {
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// RawExtension->JSON encodes struct fields in field index order while map[string]interface{}->JSON encodes
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// struct fields (i.e. keys in the map) lexicographically. We have to sort the fields here to ensure the
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// JSON in the (RawExtension->)JSON->map[string]interface{}->JSON round trip results in identical JSON.
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var u any
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err := kjson.Unmarshal(ext.Raw, &u)
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if err != nil {
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panic(fmt.Sprintf("Failed to encode object: %v", err))
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}
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ext.Raw, err = kjson.Marshal(&u)
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if err != nil {
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panic(fmt.Sprintf("Failed to encode object: %v", err))
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}
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}
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}
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