119 lines
2.9 KiB
Go
119 lines
2.9 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 commands
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import (
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"fmt"
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"io"
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"os"
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"github.com/spf13/cobra"
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"k8s.io/kubectl/pkg/kinflate/tree"
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"k8s.io/kubectl/pkg/kinflate/types"
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kutil "k8s.io/kubectl/pkg/kinflate/util"
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"k8s.io/kubectl/pkg/kinflate/util/fs"
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)
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type inflateOptions struct {
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outputdir string
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manifestPath string
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mode tree.ModeType
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}
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// newCmdInflate creates a new inflate command.
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func newCmdInflate(out, errOut io.Writer) *cobra.Command {
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var o inflateOptions
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cmd := &cobra.Command{
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Use: "inflate -f [path]",
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Short: "Use a Manifest file to generate a set of api resources",
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Long: "Use a Manifest file to generate a set of api resources",
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Example: `
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# Use the Kube-manifest.yaml file under somedir/ to generate a set of api resources.
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inflate -f somedir/`,
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Run: func(cmd *cobra.Command, args []string) {
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err := o.Validate(cmd, args)
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if err != nil {
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fmt.Fprintf(errOut, "error: %v\n", err)
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os.Exit(1)
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}
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err = o.Complete(cmd, args)
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if err != nil {
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fmt.Fprintf(errOut, "error: %v\n", err)
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os.Exit(1)
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}
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err = o.RunInflate(out, errOut)
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if err != nil {
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fmt.Fprintf(errOut, "error: %v\n", err)
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os.Exit(1)
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}
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},
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}
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cmd.Flags().StringVarP(&o.manifestPath, "filename", "f", "", "Pass in a Kube-manifest.yaml file or a directory that contains the file.")
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cmd.MarkFlagRequired("filename")
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return cmd
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}
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// Validate validates inflate command.
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func (o *inflateOptions) Validate(cmd *cobra.Command, args []string) error {
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return nil
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}
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// Complete completes inflate command.
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func (o *inflateOptions) Complete(cmd *cobra.Command, args []string) error {
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o.mode = tree.ModeNormal
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return nil
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}
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// runInflate does the real transformation.
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func (o *inflateOptions) runInflate(fs fs.FileSystem) (types.KObject, error) {
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// Build a tree of ManifestData.
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loader := tree.Loader{FS: fs, InitialPath: o.manifestPath}
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root, err := loader.LoadManifestDataFromPath()
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if err != nil {
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return nil, err
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}
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// Do the transformation for the tree.
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err = root.Inflate(o.mode)
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if err != nil {
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return nil, err
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}
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return types.KObject(root.Resources), nil
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}
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// RunInflate runs inflate command (do real work).
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func (o *inflateOptions) RunInflate(out, errOut io.Writer) error {
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fs := fs.MakeRealFS()
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kobj, err := o.runInflate(fs)
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if err != nil {
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return err
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}
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// Output the objects.
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res, err := kutil.Encode(kobj)
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if err != nil {
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return err
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}
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_, err = out.Write(res)
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return err
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}
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