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Implement "kind: KustomizationPatch" to support composition of Kustomize files

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This commit is contained in:
Paul Martin
2019-12-04 18:30:39 -08:00
parent 7d5304928b
commit 4454edc14c
3 changed files with 367 additions and 20 deletions
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42
api/internal/target/kusttarget.go
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@@ -155,8 +155,12 @@ func (kt *KustTarget) addHashesToNames(
// not yet fixed.
func (kt *KustTarget) AccumulateTarget() (
ra *accumulator.ResAccumulator, err error) {
ra = accumulator.MakeEmptyAccumulator()
err = kt.accumulateResources(ra, kt.kustomization.Resources)
return kt.accumulateTarget(accumulator.MakeEmptyAccumulator())
}
func (kt *KustTarget) accumulateTarget(ra *accumulator.ResAccumulator) (
resRa *accumulator.ResAccumulator, err error) {
ra, err = kt.accumulateResources(ra, kt.kustomization.Resources)
if err != nil {
return nil, errors.Wrap(err, "accumulating resources")
}
@@ -224,7 +228,7 @@ func (kt *KustTarget) runGenerators(
func (kt *KustTarget) configureExternalGenerators() ([]resmap.Generator, error) {
ra := accumulator.MakeEmptyAccumulator()
err := kt.accumulateResources(ra, kt.kustomization.Generators)
ra, err := kt.accumulateResources(ra, kt.kustomization.Generators)
if err != nil {
return nil, err
}
@@ -250,7 +254,7 @@ func (kt *KustTarget) runTransformers(ra *accumulator.ResAccumulator) error {
func (kt *KustTarget) configureExternalTransformers() ([]resmap.Transformer, error) {
ra := accumulator.MakeEmptyAccumulator()
err := kt.accumulateResources(ra, kt.kustomization.Transformers)
ra, err := kt.accumulateResources(ra, kt.kustomization.Transformers)
if err != nil {
return nil, err
}
@@ -260,44 +264,52 @@ func (kt *KustTarget) configureExternalTransformers() ([]resmap.Transformer, err
// accumulateResources fills the given resourceAccumulator
// with resources read from the given list of paths.
func (kt *KustTarget) accumulateResources(
ra *accumulator.ResAccumulator, paths []string) error {
ra *accumulator.ResAccumulator, paths []string) (*accumulator.ResAccumulator, error) {
for _, path := range paths {
// try loading resource as file then as base (directory or git repository)
if errF := kt.accumulateFile(ra, path); errF != nil {
ldr, errL := kt.ldr.New(path)
if errL != nil {
return fmt.Errorf("accumulateFile %q, loader.New %q", errF, errL)
return nil, fmt.Errorf("accumulateFile %q, loader.New %q", errF, errL)
}
errD := kt.accumulateDirectory(ra, ldr)
var errD error
ra, errD = kt.accumulateDirectory(ra, ldr)
if errD != nil {
return fmt.Errorf("accumulateFile %q, accumulateDirector: %q", errF, errD)
return nil, fmt.Errorf("accumulateFile %q, accumulateDirector: %q", errF, errD)
}
}
}
return nil
return ra, nil
}
func (kt *KustTarget) accumulateDirectory(
ra *accumulator.ResAccumulator, ldr ifc.Loader) error {
ra *accumulator.ResAccumulator, ldr ifc.Loader) (*accumulator.ResAccumulator, error) {
defer ldr.Cleanup()
subKt := NewKustTarget(
ldr, kt.validator, kt.rFactory, kt.tFactory, kt.pLdr)
err := subKt.Load()
if err != nil {
return errors.Wrapf(
return nil, errors.Wrapf(
err, "couldn't make target for path '%s'", ldr.Root())
}
subRa, err := subKt.AccumulateTarget()
var subRa *accumulator.ResAccumulator
if subKt.kustomization.Kind == types.KustomizationPatchKind {
subRa, err = subKt.accumulateTarget(ra)
ra = accumulator.MakeEmptyAccumulator()
} else {
subRa, err = subKt.AccumulateTarget()
}
if err != nil {
return errors.Wrapf(
return nil, errors.Wrapf(
err, "recursed accumulation of path '%s'", ldr.Root())
}
err = ra.MergeAccumulator(subRa)
if err != nil {
return errors.Wrapf(
return nil, errors.Wrapf(
err, "recursed merging from path '%s'", ldr.Root())
}
return nil
return ra, nil
}
func (kt *KustTarget) accumulateFile(