mirror of
https://github.com/kubernetes-sigs/kustomize.git
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112 lines
4.2 KiB
Go
112 lines
4.2 KiB
Go
/*
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Copyright 2018 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 transformerconfig provides the functions to load default or user provided configurations
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// for different transformers
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package transformerconfig
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import (
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"log"
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"github.com/ghodss/yaml"
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"sigs.k8s.io/kustomize/pkg/ifc"
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"sigs.k8s.io/kustomize/pkg/transformerconfig/defaultconfig"
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)
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// TransformerConfig represents the path configurations for different transformations
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type TransformerConfig struct {
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NamePrefix []PathConfig `json:"namePrefix,omitempty" yaml:"namePrefix,omitempty"`
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NameSpace []PathConfig `json:"namespace,omitempty" yaml:"namespace,omitempty"`
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CommonLabels []PathConfig `json:"commonLabels,omitempty" yaml:"commonLabels,omitempty"`
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CommonAnnotations []PathConfig `json:"commonAnnotations,omitempty" yaml:"commonAnnotations,omitempty"`
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NameReference []ReferencePathConfig `json:"nameReference,omitempty" yaml:"nameReference,omitempty"`
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VarReference []PathConfig `json:"varReference,omitempty" yaml:"varReference,omitempty"`
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}
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// AddPrefixPathConfig adds a PathConfig to NamePrefix
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func (t *TransformerConfig) AddPrefixPathConfig(config PathConfig) {
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t.NamePrefix = append(t.NamePrefix, config)
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}
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// AddLabelPathConfig adds a PathConfig to CommonLabels
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func (t *TransformerConfig) AddLabelPathConfig(config PathConfig) {
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t.CommonLabels = append(t.CommonLabels, config)
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}
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// AddAnnotationPathConfig adds a PathConfig to CommonAnnotations
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func (t *TransformerConfig) AddAnnotationPathConfig(config PathConfig) {
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t.CommonAnnotations = append(t.CommonAnnotations, config)
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}
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// AddNamereferencePathConfig adds a ReferencePathConfig to NameReference
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func (t *TransformerConfig) AddNamereferencePathConfig(config ReferencePathConfig) {
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t.NameReference = mergeNameReferencePathConfigs(t.NameReference, []ReferencePathConfig{config})
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}
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// Merge merges two TransformerConfigs objects into a new TransformerConfig object
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func (t *TransformerConfig) Merge(input *TransformerConfig) *TransformerConfig {
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merged := &TransformerConfig{}
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merged.NamePrefix = append(t.NamePrefix, input.NamePrefix...)
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merged.NameSpace = append(t.NameSpace, input.NameSpace...)
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merged.CommonAnnotations = append(t.CommonAnnotations, input.CommonAnnotations...)
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merged.CommonLabels = append(t.CommonLabels, input.CommonLabels...)
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merged.VarReference = append(t.VarReference, input.VarReference...)
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merged.NameReference = mergeNameReferencePathConfigs(t.NameReference, input.NameReference)
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return merged
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}
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// MakeTransformerConfigFromFiles returns a TranformerConfig object from a list of files
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func MakeTransformerConfigFromFiles(ldr ifc.Loader, paths []string) (*TransformerConfig, error) {
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result := &TransformerConfig{}
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for _, path := range paths {
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data, err := ldr.Load(path)
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if err != nil {
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return nil, err
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}
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t, err := MakeTransformerConfigFromBytes(data)
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if err != nil {
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return nil, err
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}
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result = result.Merge(t)
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}
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return result, nil
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}
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// MakeTransformerConfigFromBytes returns a TransformerConfig object from bytes
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func MakeTransformerConfigFromBytes(data []byte) (*TransformerConfig, error) {
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var t TransformerConfig
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err := yaml.Unmarshal(data, &t)
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if err != nil {
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return nil, err
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}
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return &t, nil
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}
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// MakeEmptyTransformerConfig returns an empty TransformerConfig object
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func MakeEmptyTransformerConfig() *TransformerConfig {
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return &TransformerConfig{}
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}
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// MakeDefaultTransformerConfig returns a default TransformerConfig.
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// This should never fail, hence the Fatal panic.
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func MakeDefaultTransformerConfig() *TransformerConfig {
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c, err := MakeTransformerConfigFromBytes(defaultconfig.GetDefaultPathConfigs())
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if err != nil {
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log.Fatalf("Unable to make default transformconfig: %v", err)
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}
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return c
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}
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