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// Copyright 2022 The Kubernetes Authors.
// SPDX-License-Identifier: Apache-2.0
package localizer
import (
"sigs.k8s.io/kustomize/api/filters/fieldspec"
"sigs.k8s.io/kustomize/api/filters/filtersutil"
"sigs.k8s.io/kustomize/api/filters/fsslice"
"sigs.k8s.io/kustomize/api/internal/plugins/builtinhelpers"
"sigs.k8s.io/kustomize/api/konfig"
"sigs.k8s.io/kustomize/api/types"
"sigs.k8s.io/kustomize/kyaml/errors"
"sigs.k8s.io/kustomize/kyaml/kio"
"sigs.k8s.io/kustomize/kyaml/resid"
"sigs.k8s.io/kustomize/kyaml/yaml"
)
// localizeBuiltinPlugins localizes built-in plugins with file paths.
// Note that this excludes helm, which needs a repo.
type localizeBuiltinPlugins struct {
lc *localizer
// locPathFn is used by localizeNode to set the localized path on the plugin.
locPathFn func(string) (string, error)
}
var _ kio.Filter = &localizeBuiltinPlugins{}
// Filter localizes the built-in plugins with file paths.
func (lbp *localizeBuiltinPlugins) Filter(plugins []*yaml.RNode) ([]*yaml.RNode, error) {
for _, singlePlugin := range plugins {
err := singlePlugin.PipeE(fsslice.Filter{
FsSlice: types.FsSlice{
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.ConfigMapGenerator.String()},
Path: "env",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.ConfigMapGenerator.String()},
Path: "envs",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.SecretGenerator.String()},
Path: "env",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.SecretGenerator.String()},
Path: "envs",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.HelmChartInflationGenerator.String()},
Path: "valuesFile",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.HelmChartInflationGenerator.String()},
Path: "additionalValuesFiles",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.PatchTransformer.String()},
Path: "path",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.PatchJson6902Transformer.String()},
Path: "path",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.ReplacementTransformer.String()},
Path: "replacements/path",
},
},
SetValue: func(node *yaml.RNode) error {
lbp.locPathFn = lbp.lc.localizeFile
return lbp.localizeAll(node)
},
},
fsslice.Filter{
FsSlice: types.FsSlice{
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.ConfigMapGenerator.String()},
Path: "files",
},
types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.SecretGenerator.String()},
Path: "files",
},
},
SetValue: func(node *yaml.RNode) error {
lbp.locPathFn = lbp.lc.localizeFileSource
return lbp.localizeAll(node)
},
},
yaml.FilterFunc(func(node *yaml.RNode) (*yaml.RNode, error) {
isHelm := node.GetApiVersion() == konfig.BuiltinPluginApiVersion &&
node.GetKind() == builtinhelpers.HelmChartInflationGenerator.String()
if !isHelm {
return node, nil
}
home, err := node.Pipe(yaml.Lookup("chartHome"))
if err != nil {
return nil, errors.Wrap(err)
}
if home == nil {
_, err = lbp.lc.copyChartHomeEntry("")
} else {
lbp.locPathFn = lbp.lc.copyChartHomeEntry
err = lbp.localizeScalar(home)
}
return node, errors.WrapPrefixf(err, "plugin %s", resid.FromRNode(node))
}),
fieldspec.Filter{
FieldSpec: types.FieldSpec{
Gvk: resid.Gvk{Version: konfig.BuiltinPluginApiVersion, Kind: builtinhelpers.PatchStrategicMergeTransformer.String()},
Path: "paths",
},
SetValue: func(node *yaml.RNode) error {
lbp.locPathFn = lbp.lc.localizeK8sResource
return lbp.localizeAll(node)
},
})
if err != nil {
return nil, errors.Wrap(err)
}
}
return plugins, nil
}
// localizeAll sets each entry in node to its value localized by locPathFn.
// Node is a sequence or scalar value.
func (lbp *localizeBuiltinPlugins) localizeAll(node *yaml.RNode) error {
// We rely on the build command to throw errors for nodes in
// built-in plugins that are sequences when expected to be scalar,
// and vice versa.
//nolint: exhaustive
switch node.YNode().Kind {
case yaml.SequenceNode:
return errors.Wrap(node.VisitElements(lbp.localizeScalar))
case yaml.ScalarNode:
return lbp.localizeScalar(node)
default:
return errors.Errorf("expected sequence or scalar node")
}
}
// localizeScalar sets the scalar node to its value localized by locPathFn.
func (lbp *localizeBuiltinPlugins) localizeScalar(node *yaml.RNode) error {
localizedPath, err := lbp.locPathFn(node.YNode().Value)
if err != nil {
return err
}
return filtersutil.SetScalar(localizedPath)(node)
}
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