github.com/coreos/rocket@v1.30.1-0.20200224141603-171c416fac02/rkt/app_exec.go (about)

     1  // Copyright 2016 The rkt Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package main
    16  
    17  import "github.com/spf13/cobra"
    18  
    19  var (
    20  	// Not using alias because we want 'rkt app exec' appears as
    21  	// a subcommand of 'rkt app'.
    22  	cmdAppExec = &cobra.Command{
    23  		Use:   "exec [--app=APP_NAME] UUID [CMD [ARGS ...]]",
    24  		Short: "Execute commands in the given app's namespace.",
    25  		Long:  "This executes the commands in the given app's namespace. The UUID is the UUID of a running pod. the app name is specified by --app. If CMD and ARGS are empty, then it will execute '/bin/bash' by default.",
    26  		Run:   ensureSuperuser(runWrapper(runEnter)),
    27  	}
    28  )
    29  
    30  func init() {
    31  	cmdApp.AddCommand(cmdAppExec)
    32  	cmdAppExec.Flags().StringVar(&flagAppName, "app", "", "name of the app to exec within the specified pod, can be empty if there is only one app in the pod.")
    33  	// Disable interspersed flags to stop parsing after the first non flag
    34  	// argument. This is need to permit to correctly handle
    35  	// ARGS for the CMD.
    36  	cmdAppExec.Flags().SetInterspersed(false)
    37  }