262 lines
7.9 KiB
Go
262 lines
7.9 KiB
Go
/*
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Copyright 2014 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 cmd
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import (
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"fmt"
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"io"
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gruntime "runtime"
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"github.com/spf13/cobra"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/kubernetes/pkg/kubectl"
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"k8s.io/kubernetes/pkg/kubectl/cmd/templates"
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cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
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"k8s.io/kubernetes/pkg/kubectl/resource"
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)
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var (
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create_long = templates.LongDesc(`
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Create a resource by filename or stdin.
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JSON and YAML formats are accepted.`)
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create_example = templates.Examples(`
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# Create a pod using the data in pod.json.
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kubectl create -f ./pod.json
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# Create a pod based on the JSON passed into stdin.
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cat pod.json | kubectl create -f -
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# Edit the data in docker-registry.yaml in JSON using the v1 API format then create the resource using the edited data.
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kubectl create -f docker-registry.yaml --edit --output-version=v1 -o json`)
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)
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func NewCmdCreate(f cmdutil.Factory, out, errOut io.Writer) *cobra.Command {
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options := &resource.FilenameOptions{}
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cmd := &cobra.Command{
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Use: "create -f FILENAME",
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Short: "Create a resource by filename or stdin",
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Long: create_long,
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Example: create_example,
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Run: func(cmd *cobra.Command, args []string) {
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if cmdutil.IsFilenameEmpty(options.Filenames) {
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defaultRunFunc := cmdutil.DefaultSubCommandRun(errOut)
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defaultRunFunc(cmd, args)
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return
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}
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cmdutil.CheckErr(ValidateArgs(cmd, args))
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cmdutil.CheckErr(RunCreate(f, cmd, out, errOut, options))
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},
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}
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usage := "to use to create the resource"
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cmdutil.AddFilenameOptionFlags(cmd, options, usage)
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cmd.MarkFlagRequired("filename")
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cmdutil.AddValidateFlags(cmd)
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cmdutil.AddPrinterFlags(cmd)
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cmd.Flags().Bool("edit", false, "Edit the API resource before creating")
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cmd.Flags().Bool("windows-line-endings", gruntime.GOOS == "windows", "Only relevant if --edit=true. Use Windows line-endings (default Unix line-endings)")
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cmdutil.AddApplyAnnotationFlags(cmd)
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cmdutil.AddRecordFlag(cmd)
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cmdutil.AddDryRunFlag(cmd)
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cmdutil.AddInclude3rdPartyFlags(cmd)
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// create subcommands
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cmd.AddCommand(NewCmdCreateNamespace(f, out))
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cmd.AddCommand(NewCmdCreateQuota(f, out))
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cmd.AddCommand(NewCmdCreateSecret(f, out, errOut))
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cmd.AddCommand(NewCmdCreateConfigMap(f, out))
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cmd.AddCommand(NewCmdCreateServiceAccount(f, out))
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cmd.AddCommand(NewCmdCreateService(f, out, errOut))
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cmd.AddCommand(NewCmdCreateDeployment(f, out))
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cmd.AddCommand(NewCmdCreateClusterRoleBinding(f, out))
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cmd.AddCommand(NewCmdCreateRoleBinding(f, out))
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cmd.AddCommand(NewCmdCreatePodDisruptionBudget(f, out))
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return cmd
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}
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func ValidateArgs(cmd *cobra.Command, args []string) error {
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if len(args) != 0 {
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return cmdutil.UsageError(cmd, "Unexpected args: %v", args)
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}
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return nil
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}
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func RunCreate(f cmdutil.Factory, cmd *cobra.Command, out, errOut io.Writer, options *resource.FilenameOptions) error {
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if cmdutil.GetFlagBool(cmd, "edit") {
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return RunEditOnCreate(f, out, errOut, cmd, options)
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}
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schema, err := f.Validator(cmdutil.GetFlagBool(cmd, "validate"), cmdutil.GetFlagString(cmd, "schema-cache-dir"))
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if err != nil {
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return err
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}
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cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
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if err != nil {
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return err
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}
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mapper, typer, err := f.UnstructuredObject()
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if err != nil {
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return err
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}
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r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.UnstructuredClientForMapping), unstructured.UnstructuredJSONScheme).
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Schema(schema).
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ContinueOnError().
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NamespaceParam(cmdNamespace).DefaultNamespace().
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FilenameParam(enforceNamespace, options).
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Flatten().
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Do()
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err = r.Err()
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if err != nil {
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return err
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}
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dryRun := cmdutil.GetFlagBool(cmd, "dry-run")
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output := cmdutil.GetFlagString(cmd, "output")
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count := 0
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err = r.Visit(func(info *resource.Info, err error) error {
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if err != nil {
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return err
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}
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if err := kubectl.CreateOrUpdateAnnotation(cmdutil.GetFlagBool(cmd, cmdutil.ApplyAnnotationsFlag), info, f.JSONEncoder()); err != nil {
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return cmdutil.AddSourceToErr("creating", info.Source, err)
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}
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if cmdutil.ShouldRecord(cmd, info) {
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if err := cmdutil.RecordChangeCause(info.Object, f.Command()); err != nil {
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return cmdutil.AddSourceToErr("creating", info.Source, err)
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}
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}
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if !dryRun {
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if err := createAndRefresh(info); err != nil {
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return cmdutil.AddSourceToErr("creating", info.Source, err)
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}
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}
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count++
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shortOutput := output == "name"
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if len(output) > 0 && !shortOutput {
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return cmdutil.PrintResourceInfoForCommand(cmd, info, f, out)
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}
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if !shortOutput {
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f.PrintObjectSpecificMessage(info.Object, out)
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}
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cmdutil.PrintSuccess(mapper, shortOutput, out, info.Mapping.Resource, info.Name, dryRun, "created")
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return nil
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})
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if err != nil {
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return err
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}
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if count == 0 {
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return fmt.Errorf("no objects passed to create")
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}
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return nil
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}
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func RunEditOnCreate(f cmdutil.Factory, out, errOut io.Writer, cmd *cobra.Command, options *resource.FilenameOptions) error {
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return runEdit(f, out, errOut, cmd, []string{}, options, EditBeforeCreateMode)
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}
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// createAndRefresh creates an object from input info and refreshes info with that object
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func createAndRefresh(info *resource.Info) error {
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obj, err := resource.NewHelper(info.Client, info.Mapping).Create(info.Namespace, true, info.Object)
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if err != nil {
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return err
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}
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info.Refresh(obj, true)
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return nil
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}
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// NameFromCommandArgs is a utility function for commands that assume the first argument is a resource name
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func NameFromCommandArgs(cmd *cobra.Command, args []string) (string, error) {
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if len(args) == 0 {
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return "", cmdutil.UsageError(cmd, "NAME is required")
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}
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return args[0], nil
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}
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// CreateSubcommandOptions is an options struct to support create subcommands
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type CreateSubcommandOptions struct {
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// Name of resource being created
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Name string
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// StructuredGenerator is the resource generator for the object being created
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StructuredGenerator kubectl.StructuredGenerator
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// DryRun is true if the command should be simulated but not run against the server
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DryRun bool
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// OutputFormat
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OutputFormat string
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}
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// RunCreateSubcommand executes a create subcommand using the specified options
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func RunCreateSubcommand(f cmdutil.Factory, cmd *cobra.Command, out io.Writer, options *CreateSubcommandOptions) error {
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namespace, _, err := f.DefaultNamespace()
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if err != nil {
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return err
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}
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obj, err := options.StructuredGenerator.StructuredGenerate()
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if err != nil {
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return err
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}
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mapper, typer := f.Object()
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gvks, _, err := typer.ObjectKinds(obj)
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if err != nil {
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return err
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}
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gvk := gvks[0]
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mapping, err := mapper.RESTMapping(schema.GroupKind{Group: gvk.Group, Kind: gvk.Kind}, gvk.Version)
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if err != nil {
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return err
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}
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client, err := f.ClientForMapping(mapping)
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if err != nil {
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return err
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}
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resourceMapper := &resource.Mapper{
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ObjectTyper: typer,
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RESTMapper: mapper,
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ClientMapper: resource.ClientMapperFunc(f.ClientForMapping),
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}
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info, err := resourceMapper.InfoForObject(obj, nil)
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if err != nil {
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return err
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}
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if err := kubectl.UpdateApplyAnnotation(info, f.JSONEncoder()); err != nil {
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return err
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}
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if !options.DryRun {
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obj, err = resource.NewHelper(client, mapping).Create(namespace, false, info.Object)
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if err != nil {
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return err
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}
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}
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if useShortOutput := options.OutputFormat == "name"; useShortOutput || len(options.OutputFormat) == 0 {
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cmdutil.PrintSuccess(mapper, useShortOutput, out, mapping.Resource, options.Name, options.DryRun, "created")
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return nil
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}
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return f.PrintObject(cmd, mapper, obj, out)
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}
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