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01ae6edc6c
The same redundant fmt.Sprintf() and string literal was duplicated throughout many of the files in kubectl/cmd. Replace with a helper function.
108 lines
4.6 KiB
Go
108 lines
4.6 KiB
Go
/*
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Copyright 2016 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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"io"
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"github.com/spf13/cobra"
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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/util/i18n"
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)
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var (
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configMapLong = templates.LongDesc(i18n.T(`
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Create a configmap based on a file, directory, or specified literal value.
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A single configmap may package one or more key/value pairs.
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When creating a configmap based on a file, the key will default to the basename of the file, and the value will
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default to the file content. If the basename is an invalid key, you may specify an alternate key.
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When creating a configmap based on a directory, each file whose basename is a valid key in the directory will be
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packaged into the configmap. Any directory entries except regular files are ignored (e.g. subdirectories,
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symlinks, devices, pipes, etc).`))
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configMapExample = templates.Examples(i18n.T(`
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# Create a new configmap named my-config based on folder bar
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kubectl create configmap my-config --from-file=path/to/bar
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# Create a new configmap named my-config with specified keys instead of file basenames on disk
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kubectl create configmap my-config --from-file=key1=/path/to/bar/file1.txt --from-file=key2=/path/to/bar/file2.txt
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# Create a new configmap named my-config with key1=config1 and key2=config2
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kubectl create configmap my-config --from-literal=key1=config1 --from-literal=key2=config2
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# Create a new configmap named my-config from the key=value pairs in the file
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kubectl create configmap my-config --from-file=path/to/bar
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# Create a new configmap named my-config from an env file
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kubectl create configmap my-config --from-env-file=path/to/bar.env`))
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)
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// ConfigMap is a command to ease creating ConfigMaps.
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func NewCmdCreateConfigMap(f cmdutil.Factory, cmdOut io.Writer) *cobra.Command {
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cmd := &cobra.Command{
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Use: "configmap NAME [--from-file=[key=]source] [--from-literal=key1=value1] [--dry-run]",
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Aliases: []string{"cm"},
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Short: i18n.T("Create a configmap from a local file, directory or literal value"),
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Long: configMapLong,
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Example: configMapExample,
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Run: func(cmd *cobra.Command, args []string) {
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err := CreateConfigMap(f, cmdOut, cmd, args)
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cmdutil.CheckErr(err)
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},
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}
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cmdutil.AddApplyAnnotationFlags(cmd)
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cmdutil.AddValidateFlags(cmd)
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cmdutil.AddPrinterFlags(cmd)
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cmdutil.AddGeneratorFlags(cmd, cmdutil.ConfigMapV1GeneratorName)
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cmd.Flags().StringSlice("from-file", []string{}, "Key file can be specified using its file path, in which case file basename will be used as configmap key, or optionally with a key and file path, in which case the given key will be used. Specifying a directory will iterate each named file in the directory whose basename is a valid configmap key.")
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cmd.Flags().StringArray("from-literal", []string{}, "Specify a key and literal value to insert in configmap (i.e. mykey=somevalue)")
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cmd.Flags().String("from-env-file", "", "Specify the path to a file to read lines of key=val pairs to create a configmap (i.e. a Docker .env file).")
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return cmd
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}
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// CreateConfigMap is the implementation of the create configmap command.
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func CreateConfigMap(f cmdutil.Factory, cmdOut io.Writer, cmd *cobra.Command, args []string) error {
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name, err := NameFromCommandArgs(cmd, args)
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if err != nil {
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return err
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}
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var generator kubectl.StructuredGenerator
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switch generatorName := cmdutil.GetFlagString(cmd, "generator"); generatorName {
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case cmdutil.ConfigMapV1GeneratorName:
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generator = &kubectl.ConfigMapGeneratorV1{
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Name: name,
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FileSources: cmdutil.GetFlagStringSlice(cmd, "from-file"),
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LiteralSources: cmdutil.GetFlagStringArray(cmd, "from-literal"),
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EnvFileSource: cmdutil.GetFlagString(cmd, "from-env-file"),
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}
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default:
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return errUnsupportedGenerator(cmd, generatorName)
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}
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return RunCreateSubcommand(f, cmd, cmdOut, &CreateSubcommandOptions{
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Name: name,
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StructuredGenerator: generator,
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DryRun: cmdutil.GetDryRunFlag(cmd),
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OutputFormat: cmdutil.GetFlagString(cmd, "output"),
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})
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}
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