mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-18 20:30:23 +00:00
316 lines
8.7 KiB
Go
316 lines
8.7 KiB
Go
/*
|
|
Copyright 2018 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.
|
|
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 target implements state for the set of all resources to customize.
|
|
package target
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/ghodss/yaml"
|
|
"github.com/pkg/errors"
|
|
"sigs.k8s.io/kustomize/pkg/constants"
|
|
"sigs.k8s.io/kustomize/pkg/ifc"
|
|
"sigs.k8s.io/kustomize/pkg/ifc/transformer"
|
|
interror "sigs.k8s.io/kustomize/pkg/internal/error"
|
|
patchtransformer "sigs.k8s.io/kustomize/pkg/patch/transformer"
|
|
"sigs.k8s.io/kustomize/pkg/resmap"
|
|
"sigs.k8s.io/kustomize/pkg/resource"
|
|
"sigs.k8s.io/kustomize/pkg/transformers"
|
|
"sigs.k8s.io/kustomize/pkg/transformers/config"
|
|
"sigs.k8s.io/kustomize/pkg/types"
|
|
)
|
|
|
|
// KustTarget encapsulates the entirety of a kustomization build.
|
|
type KustTarget struct {
|
|
kustomization *types.Kustomization
|
|
ldr ifc.Loader
|
|
rFactory *resmap.Factory
|
|
tFactory transformer.Factory
|
|
}
|
|
|
|
// NewKustTarget returns a new instance of KustTarget primed with a Loader.
|
|
func NewKustTarget(
|
|
ldr ifc.Loader,
|
|
rFactory *resmap.Factory,
|
|
tFactory transformer.Factory) (*KustTarget, error) {
|
|
content, err := loadKustFile(ldr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
content = types.DealWithDeprecatedFields(content)
|
|
var k types.Kustomization
|
|
err = unmarshal(content, &k)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
errs := k.EnforceFields()
|
|
if len(errs) > 0 {
|
|
return nil, fmt.Errorf("Failed to read kustomization file under %s:\n"+strings.Join(errs, "\n"), ldr.Root())
|
|
}
|
|
return &KustTarget{
|
|
kustomization: &k,
|
|
ldr: ldr,
|
|
rFactory: rFactory,
|
|
tFactory: tFactory,
|
|
}, nil
|
|
}
|
|
|
|
func quoted(l []string) []string {
|
|
r := make([]string, len(l))
|
|
for i, v := range l {
|
|
r[i] = "'" + v + "'"
|
|
}
|
|
return r
|
|
}
|
|
|
|
func commaOr(q []string) string {
|
|
return strings.Join(q[:len(q)-1], ", ") + " or " + q[len(q)-1]
|
|
}
|
|
|
|
func loadKustFile(ldr ifc.Loader) ([]byte, error) {
|
|
var content []byte
|
|
match := 0
|
|
for _, kf := range constants.KustomizationFileNames {
|
|
c, err := ldr.Load(kf)
|
|
if err == nil {
|
|
match += 1
|
|
content = c
|
|
}
|
|
}
|
|
switch match {
|
|
case 0:
|
|
return nil, fmt.Errorf(
|
|
"unable to find one of %v in directory '%s'",
|
|
commaOr(quoted(constants.KustomizationFileNames)), ldr.Root())
|
|
case 1:
|
|
return content, nil
|
|
default:
|
|
return nil, fmt.Errorf("Found multiple kustomization files under: %s\n", ldr.Root())
|
|
}
|
|
}
|
|
|
|
func unmarshal(y []byte, o interface{}) error {
|
|
j, err := yaml.YAMLToJSON(y)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dec := json.NewDecoder(bytes.NewReader(j))
|
|
dec.DisallowUnknownFields()
|
|
return dec.Decode(o)
|
|
}
|
|
|
|
// MakeCustomizedResMap creates a ResMap per kustomization instructions.
|
|
// The Resources in the returned ResMap are fully customized.
|
|
func (kt *KustTarget) MakeCustomizedResMap() (resmap.ResMap, error) {
|
|
ra, err := kt.AccumulateTarget()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = ra.Transform(kt.tFactory.MakeHashTransformer())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// Given that names have changed (prefixs/suffixes added),
|
|
// fix all the back references to those names.
|
|
err = ra.FixBackReferences()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// With all the back references fixed, it's OK to resolve Vars.
|
|
err = ra.ResolveVars()
|
|
return ra.ResMap(), err
|
|
}
|
|
|
|
func (kt *KustTarget) shouldAddHashSuffixesToGeneratedResources() bool {
|
|
return kt.kustomization.GeneratorOptions == nil ||
|
|
!kt.kustomization.GeneratorOptions.DisableNameSuffixHash
|
|
}
|
|
|
|
// AccumulateTarget returns a new ResAccumulator,
|
|
// holding customized resources and the data/rules used
|
|
// to do so. The name back references and vars are
|
|
// not yet fixed.
|
|
func (kt *KustTarget) AccumulateTarget() (
|
|
ra *ResAccumulator, err error) {
|
|
// TODO(monopole): Get rid of the KustomizationErrors accumulator.
|
|
// It's not consistently used, and complicates tests.
|
|
errs := &interror.KustomizationErrors{}
|
|
ra, errs = kt.accumulateBases()
|
|
resources, err := kt.rFactory.FromFiles(
|
|
kt.ldr, kt.kustomization.Resources)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "rawResources failed to read Resources"))
|
|
}
|
|
if len(errs.Get()) > 0 {
|
|
return ra, errs
|
|
}
|
|
err = ra.MergeResourcesWithErrorOnIdCollision(resources)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "MergeResourcesWithErrorOnIdCollision"))
|
|
}
|
|
tConfig, err := config.MakeTransformerConfig(
|
|
kt.ldr, kt.kustomization.Configurations)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = ra.MergeConfig(tConfig)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "MergeConfig"))
|
|
}
|
|
err = ra.MergeVars(kt.kustomization.Vars)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "MergeVars"))
|
|
}
|
|
crdTc, err := config.LoadConfigFromCRDs(kt.ldr, kt.kustomization.Crds)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "LoadCRDs"))
|
|
}
|
|
err = ra.MergeConfig(crdTc)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "merge CRDs"))
|
|
}
|
|
resMap, err := kt.generateConfigMapsAndSecrets(errs)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "generateConfigMapsAndSecrets"))
|
|
}
|
|
err = ra.MergeResourcesWithOverride(resMap)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
patches, err := kt.rFactory.RF().SliceFromPatches(
|
|
kt.ldr, kt.kustomization.PatchesStrategicMerge)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "SliceFromPatches"))
|
|
}
|
|
if len(errs.Get()) > 0 {
|
|
return nil, errs
|
|
}
|
|
t, err := kt.newTransformer(patches, ra.tConfig)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
err = ra.Transform(t)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return ra, nil
|
|
}
|
|
|
|
func (kt *KustTarget) generateConfigMapsAndSecrets(
|
|
errs *interror.KustomizationErrors) (resmap.ResMap, error) {
|
|
kt.rFactory.Set(kt.ldr)
|
|
cms, err := kt.rFactory.NewResMapFromConfigMapArgs(
|
|
kt.kustomization.ConfigMapGenerator, kt.kustomization.GeneratorOptions)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "NewResMapFromConfigMapArgs"))
|
|
}
|
|
secrets, err := kt.rFactory.NewResMapFromSecretArgs(
|
|
kt.kustomization.SecretGenerator, kt.kustomization.GeneratorOptions)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "NewResMapFromSecretArgs"))
|
|
}
|
|
return resmap.MergeWithErrorOnIdCollision(cms, secrets)
|
|
}
|
|
|
|
// accumulateBases returns a new ResAccumulator
|
|
// holding customized resources and the data/rules
|
|
// used to customized them from only the _bases_
|
|
// of this KustTarget.
|
|
func (kt *KustTarget) accumulateBases() (
|
|
ra *ResAccumulator, errs *interror.KustomizationErrors) {
|
|
errs = &interror.KustomizationErrors{}
|
|
ra = MakeEmptyAccumulator()
|
|
|
|
for _, path := range kt.kustomization.Bases {
|
|
ldr, err := kt.ldr.New(path)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "couldn't make loader for "+path))
|
|
continue
|
|
}
|
|
subKt, err := NewKustTarget(
|
|
ldr, kt.rFactory, kt.tFactory)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "couldn't make target for "+path))
|
|
ldr.Cleanup()
|
|
continue
|
|
}
|
|
subRa, err := subKt.AccumulateTarget()
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, "AccumulateTarget"))
|
|
ldr.Cleanup()
|
|
continue
|
|
}
|
|
err = ra.MergeAccumulator(subRa)
|
|
if err != nil {
|
|
errs.Append(errors.Wrap(err, path))
|
|
}
|
|
ldr.Cleanup()
|
|
}
|
|
return ra, errs
|
|
}
|
|
|
|
// newTransformer makes a Transformer that does a collection
|
|
// of object transformations.
|
|
func (kt *KustTarget) newTransformer(
|
|
patches []*resource.Resource, tConfig *config.TransformerConfig) (
|
|
transformers.Transformer, error) {
|
|
var r []transformers.Transformer
|
|
t, err := kt.tFactory.MakePatchTransformer(patches, kt.rFactory.RF())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r = append(r, t)
|
|
r = append(r, transformers.NewNamespaceTransformer(
|
|
string(kt.kustomization.Namespace), tConfig.NameSpace))
|
|
t, err = transformers.NewNamePrefixSuffixTransformer(
|
|
string(kt.kustomization.NamePrefix),
|
|
string(kt.kustomization.NameSuffix),
|
|
tConfig.NamePrefix,
|
|
)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r = append(r, t)
|
|
t, err = transformers.NewLabelsMapTransformer(
|
|
kt.kustomization.CommonLabels, tConfig.CommonLabels)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r = append(r, t)
|
|
t, err = transformers.NewAnnotationsMapTransformer(
|
|
kt.kustomization.CommonAnnotations, tConfig.CommonAnnotations)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r = append(r, t)
|
|
t, err = patchtransformer.NewPatchJson6902Factory(kt.ldr).
|
|
MakePatchJson6902Transformer(kt.kustomization.PatchesJson6902)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r = append(r, t)
|
|
t, err = transformers.NewImageTransformer(kt.kustomization.Images)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
r = append(r, t)
|
|
return transformers.NewMultiTransformer(r), nil
|
|
}
|