f6878aed3c
These functions call out to kubectl to get information about running resources. They give us completions which are kubernetes aware and thus obviously better than just cobra subcommands and flags.
150 lines
4.1 KiB
Go
150 lines
4.1 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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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cmdconfig "github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl/cmd/config"
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cmdutil "github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl/cmd/util"
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"github.com/golang/glog"
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"github.com/spf13/cobra"
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)
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const (
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bash_completion_func = `# call kubectl get $1,
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# use the first column in compgen
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# we could use templates, but then would need a template per resource
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__kubectl_parse_get()
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{
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local kubectl_output out
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if kubectl_output=$(kubectl get --no-headers "$1" 2>/dev/null); then
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out=($(echo "${kubectl_output}" | awk '{print $1}'))
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COMPREPLY=( $( compgen -W "${out[*]}" -- "$cur" ) )
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fi
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}
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__kubectl_get_resource()
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{
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if [[ ${#nouns[@]} -eq 0 ]]; then
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return 1
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fi
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__kubectl_parse_get ${nouns[${#nouns[@]} -1]}
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if [[ $? -eq 0 ]]; then
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return 0
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fi
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}
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# $1 is the name of the pod we want to get the list of containers inside
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__kubectl_get_containers()
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{
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local template
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template="{{ range .desiredState.manifest.containers }}{{ .name }} {{ end }}"
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__debug ${FUNCNAME} "nouns are ${nouns[@]}"
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local len="${#nouns[@]}"
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if [[ ${len} -ne 1 ]]; then
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return
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fi
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local last=${nouns[${len} -1]}
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local kubectl_out
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if kubectl_out=$(kubectl get -o template --template="${template}" pods "${last}" 2>/dev/null); then
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COMPREPLY=( $( compgen -W "${kubectl_out[*]}" -- "$cur" ) )
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fi
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}
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# Require both a pod and a container to be specified
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__kubectl_require_pod_and_container()
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{
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if [[ ${#nouns[@]} -eq 0 ]]; then
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__kubectl_parse_get pods
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return 0
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fi;
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__kubectl_get_containers
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return 0
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}
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__custom_func() {
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case ${last_command} in
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kubectl_get | kubectl_describe | kubectl_delete | kubectl_stop)
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__kubectl_get_resource
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return
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;;
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kubectl_log)
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__kubectl_require_pod_and_container
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return
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;;
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*)
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;;
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esac
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}
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`
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)
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// NewKubectlCommand creates the `kubectl` command and its nested children.
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func NewKubectlCommand(f *cmdutil.Factory, in io.Reader, out, err io.Writer) *cobra.Command {
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// Parent command to which all subcommands are added.
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cmds := &cobra.Command{
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Use: "kubectl",
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Short: "kubectl controls the Kubernetes cluster manager",
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Long: `kubectl controls the Kubernetes cluster manager.
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Find more information at https://github.com/GoogleCloudPlatform/kubernetes.`,
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Run: runHelp,
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BashCompletionFunction: bash_completion_func,
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}
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f.BindFlags(cmds.PersistentFlags())
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cmds.AddCommand(NewCmdGet(f, out))
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cmds.AddCommand(NewCmdDescribe(f, out))
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cmds.AddCommand(NewCmdCreate(f, out))
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cmds.AddCommand(NewCmdUpdate(f, out))
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cmds.AddCommand(NewCmdDelete(f, out))
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cmds.AddCommand(NewCmdNamespace(out))
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cmds.AddCommand(NewCmdLog(f, out))
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cmds.AddCommand(NewCmdRollingUpdate(f, out))
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cmds.AddCommand(NewCmdResize(f, out))
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cmds.AddCommand(NewCmdExec(f, in, out, err))
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cmds.AddCommand(NewCmdPortForward(f))
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cmds.AddCommand(NewCmdProxy(f, out))
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cmds.AddCommand(NewCmdRunContainer(f, out))
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cmds.AddCommand(NewCmdStop(f, out))
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cmds.AddCommand(NewCmdExposeService(f, out))
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cmds.AddCommand(NewCmdLabel(f, out))
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cmds.AddCommand(cmdconfig.NewCmdConfig(cmdconfig.NewDefaultPathOptions(), out))
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cmds.AddCommand(NewCmdClusterInfo(f, out))
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cmds.AddCommand(NewCmdApiVersions(f, out))
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cmds.AddCommand(NewCmdVersion(f, out))
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return cmds
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}
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func runHelp(cmd *cobra.Command, args []string) {
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cmd.Help()
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}
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func printDeprecationWarning(command, alias string) {
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glog.Warningf("%s is DEPRECATED and will be removed in a future version. Use %s instead.", alias, command)
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}
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