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cmd.go
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cmd.go
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/*
Copyright 2014 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cmd
import (
"io"
"github.com/golang/glog"
cmdconfig "k8s.io/kubernetes/pkg/kubectl/cmd/config"
"k8s.io/kubernetes/pkg/kubectl/cmd/rollout"
cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
"k8s.io/kubernetes/pkg/util/flag"
"github.com/spf13/cobra"
)
const (
bash_completion_func = `# call kubectl get $1,
__kubectl_namespace_flag()
{
local ret two_word_ns
ret=""
two_word_ns=false
for w in "${words[@]}"; do
if [ "$two_word_ns" = true ]; then
ret="--namespace=${w}"
two_word_ns=false
continue
fi
case "${w}" in
--namespace=*)
ret=${w}
;;
--namespace)
two_word_ns=true
;;
--all-namespaces)
ret=${w}
;;
esac
done
echo $ret
}
__kubectl_get_namespaces()
{
local template kubectl_out
template="{{ range .items }}{{ .metadata.name }} {{ end }}"
if kubectl_out=$(kubectl get -o template --template="${template}" namespace 2>/dev/null); then
COMPREPLY=( $( compgen -W "${kubectl_out[*]}" -- "$cur" ) )
fi
}
__kubectl_parse_get()
{
local template
template="{{ range .items }}{{ .metadata.name }} {{ end }}"
local kubectl_out
if kubectl_out=$(kubectl get $(__kubectl_namespace_flag) -o template --template="${template}" "$1" 2>/dev/null); then
COMPREPLY=( $( compgen -W "${kubectl_out[*]}" -- "$cur" ) )
fi
}
__kubectl_get_resource()
{
if [[ ${#nouns[@]} -eq 0 ]]; then
return 1
fi
__kubectl_parse_get "${nouns[${#nouns[@]} -1]}"
}
__kubectl_get_resource_pod()
{
__kubectl_parse_get "pod"
}
__kubectl_get_resource_rc()
{
__kubectl_parse_get "rc"
}
# $1 is the name of the pod we want to get the list of containers inside
__kubectl_get_containers()
{
local template
template="{{ range .spec.containers }}{{ .name }} {{ end }}"
__debug "${FUNCNAME} nouns are ${nouns[*]}"
local len="${#nouns[@]}"
if [[ ${len} -ne 1 ]]; then
return
fi
local last=${nouns[${len} -1]}
local kubectl_out
if kubectl_out=$(kubectl get $(__kubectl_namespace_flag) -o template --template="${template}" pods "${last}" 2>/dev/null); then
COMPREPLY=( $( compgen -W "${kubectl_out[*]}" -- "$cur" ) )
fi
}
# Require both a pod and a container to be specified
__kubectl_require_pod_and_container()
{
if [[ ${#nouns[@]} -eq 0 ]]; then
__kubectl_parse_get pods
return 0
fi;
__kubectl_get_containers
return 0
}
__custom_func() {
case ${last_command} in
kubectl_get | kubectl_describe | kubectl_delete | kubectl_label | kubectl_stop | kubectl_edit | kubectl_patch |\
kubectl_annotate | kubectl_expose)
__kubectl_get_resource
return
;;
kubectl_logs)
__kubectl_require_pod_and_container
return
;;
kubectl_exec)
__kubectl_get_resource_pod
return
;;
kubectl_rolling-update)
__kubectl_get_resource_rc
return
;;
*)
;;
esac
}
`
// If you add a resource to this list, please also take a look at pkg/kubectl/kubectl.go
// and add a short forms entry in expandResourceShortcut() when appropriate.
valid_resources = `Valid resource types include:
* componentstatuses (aka 'cs')
* configmaps
* daemonsets (aka 'ds')
* deployments
* events (aka 'ev')
* endpoints (aka 'ep')
* horizontalpodautoscalers (aka 'hpa')
* ingress (aka 'ing')
* jobs
* limitranges (aka 'limits')
* nodes (aka 'no')
* namespaces (aka 'ns')
* pods (aka 'po')
* persistentvolumes (aka 'pv')
* persistentvolumeclaims (aka 'pvc')
* quota
* resourcequotas (aka 'quota')
* replicasets (aka 'rs')
* replicationcontrollers (aka 'rc')
* secrets
* serviceaccounts (aka 'sa')
* services (aka 'svc')
`
)
// NewKubectlCommand creates the `kubectl` command and its nested children.
func NewKubectlCommand(f *cmdutil.Factory, in io.Reader, out, err io.Writer) *cobra.Command {
// Parent command to which all subcommands are added.
cmds := &cobra.Command{
Use: "kubectl",
Short: "kubectl controls the Kubernetes cluster manager",
Long: `kubectl controls the Kubernetes cluster manager.
Find more information at https://github.com/kubernetes/kubernetes.`,
Run: runHelp,
BashCompletionFunction: bash_completion_func,
}
f.BindFlags(cmds.PersistentFlags())
f.BindExternalFlags(cmds.PersistentFlags())
// From this point and forward we get warnings on flags that contain "_" separators
cmds.SetGlobalNormalizationFunc(flag.WarnWordSepNormalizeFunc)
cmds.AddCommand(NewCmdGet(f, out))
cmds.AddCommand(NewCmdDescribe(f, out))
cmds.AddCommand(NewCmdCreate(f, out))
cmds.AddCommand(NewCmdReplace(f, out))
cmds.AddCommand(NewCmdPatch(f, out))
cmds.AddCommand(NewCmdDelete(f, out))
cmds.AddCommand(NewCmdEdit(f, out, err))
cmds.AddCommand(NewCmdApply(f, out))
cmds.AddCommand(NewCmdNamespace(out))
cmds.AddCommand(NewCmdLogs(f, out))
cmds.AddCommand(NewCmdRollingUpdate(f, out))
cmds.AddCommand(NewCmdScale(f, out))
cmds.AddCommand(NewCmdCordon(f, out))
cmds.AddCommand(NewCmdDrain(f, out))
cmds.AddCommand(NewCmdUncordon(f, out))
cmds.AddCommand(NewCmdAttach(f, in, out, err))
cmds.AddCommand(NewCmdExec(f, in, out, err))
cmds.AddCommand(NewCmdPortForward(f))
cmds.AddCommand(NewCmdProxy(f, out))
cmds.AddCommand(NewCmdRun(f, in, out, err))
cmds.AddCommand(NewCmdStop(f, out))
cmds.AddCommand(NewCmdExposeService(f, out))
cmds.AddCommand(NewCmdAutoscale(f, out))
cmds.AddCommand(rollout.NewCmdRollout(f, out))
cmds.AddCommand(NewCmdLabel(f, out))
cmds.AddCommand(NewCmdAnnotate(f, out))
cmds.AddCommand(cmdconfig.NewCmdConfig(cmdconfig.NewDefaultPathOptions(), out))
cmds.AddCommand(NewCmdClusterInfo(f, out))
cmds.AddCommand(NewCmdApiVersions(f, out))
cmds.AddCommand(NewCmdVersion(f, out))
cmds.AddCommand(NewCmdExplain(f, out))
cmds.AddCommand(NewCmdConvert(f, out))
if cmds.Flag("namespace").Annotations == nil {
cmds.Flag("namespace").Annotations = map[string][]string{}
}
cmds.Flag("namespace").Annotations[cobra.BashCompCustom] = append(
cmds.Flag("namespace").Annotations[cobra.BashCompCustom],
"__kubectl_get_namespaces",
)
return cmds
}
func runHelp(cmd *cobra.Command, args []string) {
cmd.Help()
}
func printDeprecationWarning(command, alias string) {
glog.Warningf("%s is DEPRECATED and will be removed in a future version. Use %s instead.", alias, command)
}