348 lines
9.7 KiB
Go
348 lines
9.7 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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"k8s.io/client-go/tools/clientcmd"
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cmdconfig "k8s.io/kubernetes/pkg/kubectl/cmd/config"
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"k8s.io/kubernetes/pkg/kubectl/cmd/rollout"
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"k8s.io/kubernetes/pkg/kubectl/cmd/set"
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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/flag"
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"k8s.io/kubernetes/pkg/util/i18n"
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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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__kubectl_override_flag_list=(kubeconfig cluster user context namespace server)
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__kubectl_override_flags()
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{
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local ${__kubectl_override_flag_list[*]} two_word_of of
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for w in "${words[@]}"; do
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if [ -n "${two_word_of}" ]; then
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eval "${two_word_of}=\"--${two_word_of}=\${w}\""
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two_word_of=
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continue
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fi
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for of in "${__kubectl_override_flag_list[@]}"; do
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case "${w}" in
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--${of}=*)
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eval "${of}=\"${w}\""
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;;
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--${of})
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two_word_of="${of}"
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;;
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esac
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done
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if [ "${w}" == "--all-namespaces" ]; then
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namespace="--all-namespaces"
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fi
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done
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for of in "${__kubectl_override_flag_list[@]}"; do
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if eval "test -n \"\$${of}\""; then
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eval "echo \${${of}}"
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fi
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done
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}
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__kubectl_get_namespaces()
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{
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local template kubectl_out
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template="{{ range .items }}{{ .metadata.name }} {{ end }}"
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if kubectl_out=$(kubectl get -o template --template="${template}" namespace 2>/dev/null); then
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COMPREPLY=( $( compgen -W "${kubectl_out[*]}" -- "$cur" ) )
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fi
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}
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__kubectl_parse_get()
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{
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local template
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template="{{ range .items }}{{ .metadata.name }} {{ end }}"
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local kubectl_out
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if kubectl_out=$(kubectl get $(__kubectl_override_flags) -o template --template="${template}" "$1" 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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__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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}
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__kubectl_get_resource_pod()
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{
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__kubectl_parse_get "pod"
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}
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__kubectl_get_resource_rc()
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{
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__kubectl_parse_get "rc"
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}
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__kubectl_get_resource_node()
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{
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__kubectl_parse_get "node"
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}
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# $1 is the name of the pod we want to get the list of containers inside
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__kubectl_get_containers()
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{
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local template
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template="{{ range .spec.containers }}{{ .name }} {{ end }}"
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__debug "${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 $(__kubectl_override_flags) -o template --template="${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_label | kubectl_stop | kubectl_edit | kubectl_patch |\
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kubectl_annotate | kubectl_expose | kubectl_scale | kubectl_autoscale | kubectl_taint | kubectl_rollout_*)
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__kubectl_get_resource
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return
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;;
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kubectl_logs | kubectl_attach)
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__kubectl_require_pod_and_container
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return
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;;
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kubectl_exec | kubectl_port-forward | kubectl_top_pod)
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__kubectl_get_resource_pod
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return
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;;
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kubectl_rolling-update)
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__kubectl_get_resource_rc
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return
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;;
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kubectl_cordon | kubectl_uncordon | kubectl_drain | kubectl_top_node)
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__kubectl_get_resource_node
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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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// If you add a resource to this list, please also take a look at pkg/kubectl/kubectl.go
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// and add a short forms entry in expandResourceShortcut() when appropriate.
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// TODO: This should be populated using the discovery information from apiserver.
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valid_resources = `Valid resource types include:
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* all
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* certificatesigningrequests (aka 'csr')
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* clusters (valid only for federation apiservers)
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* clusterrolebindings
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* clusterroles
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* componentstatuses (aka 'cs')
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* configmaps (aka 'cm')
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* daemonsets (aka 'ds')
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* deployments (aka 'deploy')
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* endpoints (aka 'ep')
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* events (aka 'ev')
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* horizontalpodautoscalers (aka 'hpa')
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* ingresses (aka 'ing')
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* jobs
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* limitranges (aka 'limits')
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* namespaces (aka 'ns')
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* networkpolicies
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* nodes (aka 'no')
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* persistentvolumeclaims (aka 'pvc')
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* persistentvolumes (aka 'pv')
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* pods (aka 'po')
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* poddisruptionbudgets (aka 'pdb')
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* podsecuritypolicies (aka 'psp')
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* podtemplates
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* replicasets (aka 'rs')
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* replicationcontrollers (aka 'rc')
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* resourcequotas (aka 'quota')
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* rolebindings
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* roles
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* secrets
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* serviceaccounts (aka 'sa')
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* services (aka 'svc')
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* statefulsets
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* storageclasses
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* thirdpartyresources
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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: templates.LongDesc(`
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kubectl controls the Kubernetes cluster manager.
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Find more information at https://github.com/kubernetes/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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f.BindExternalFlags(cmds.PersistentFlags())
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// Sending in 'nil' for the getLanguageFn() results in using
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// the LANG environment variable.
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//
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// TODO: Consider adding a flag or file preference for setting
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// the language, instead of just loading from the LANG env. variable.
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i18n.LoadTranslations("kubectl", nil)
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// From this point and forward we get warnings on flags that contain "_" separators
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cmds.SetGlobalNormalizationFunc(flag.WarnWordSepNormalizeFunc)
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groups := templates.CommandGroups{
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{
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Message: "Basic Commands (Beginner):",
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Commands: []*cobra.Command{
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NewCmdCreate(f, out, err),
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NewCmdExposeService(f, out),
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NewCmdRun(f, in, out, err),
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set.NewCmdSet(f, out, err),
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},
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},
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{
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Message: "Basic Commands (Intermediate):",
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Commands: []*cobra.Command{
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NewCmdGet(f, out, err),
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NewCmdExplain(f, out, err),
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NewCmdEdit(f, out, err),
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NewCmdDelete(f, out, err),
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},
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},
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{
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Message: "Deploy Commands:",
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Commands: []*cobra.Command{
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rollout.NewCmdRollout(f, out, err),
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NewCmdRollingUpdate(f, out),
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NewCmdScale(f, out),
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NewCmdAutoscale(f, out),
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},
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},
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{
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Message: "Cluster Management Commands:",
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Commands: []*cobra.Command{
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NewCmdCertificate(f, out),
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NewCmdClusterInfo(f, out),
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NewCmdTop(f, out, err),
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NewCmdCordon(f, out),
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NewCmdUncordon(f, out),
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NewCmdDrain(f, out, err),
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NewCmdTaint(f, out),
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},
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},
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{
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Message: "Troubleshooting and Debugging Commands:",
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Commands: []*cobra.Command{
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NewCmdDescribe(f, out, err),
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NewCmdLogs(f, out),
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NewCmdAttach(f, in, out, err),
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NewCmdExec(f, in, out, err),
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NewCmdPortForward(f, out, err),
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NewCmdProxy(f, out),
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NewCmdCp(f, in, out, err),
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},
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},
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{
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Message: "Advanced Commands:",
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Commands: []*cobra.Command{
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NewCmdApply(f, out, err),
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NewCmdPatch(f, out),
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NewCmdReplace(f, out),
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NewCmdConvert(f, out),
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},
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},
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{
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Message: "Settings Commands:",
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Commands: []*cobra.Command{
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NewCmdLabel(f, out),
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NewCmdAnnotate(f, out),
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NewCmdCompletion(f, out, ""),
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},
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},
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}
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groups.Add(cmds)
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filters := []string{
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"options",
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Deprecated("kubectl", "delete", cmds, NewCmdStop(f, out)),
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}
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templates.ActsAsRootCommand(cmds, filters, groups...)
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if cmds.Flag("namespace") != nil {
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if cmds.Flag("namespace").Annotations == nil {
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cmds.Flag("namespace").Annotations = map[string][]string{}
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}
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cmds.Flag("namespace").Annotations[cobra.BashCompCustom] = append(
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cmds.Flag("namespace").Annotations[cobra.BashCompCustom],
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"__kubectl_get_namespaces",
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)
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}
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cmds.AddCommand(cmdconfig.NewCmdConfig(clientcmd.NewDefaultPathOptions(), out, err))
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cmds.AddCommand(NewCmdVersion(f, out))
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cmds.AddCommand(NewCmdApiVersions(f, out))
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cmds.AddCommand(NewCmdOptions(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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func Deprecated(baseName, to string, parent, cmd *cobra.Command) string {
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cmd.Long = fmt.Sprintf("Deprecated: This command is deprecated, all its functionalities are covered by \"%s %s\"", baseName, to)
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cmd.Short = fmt.Sprintf("Deprecated: %s", to)
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parent.AddCommand(cmd)
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return cmd.Name()
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}
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