/
panic.go
82 lines (74 loc) · 2.19 KB
/
panic.go
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// Copyright (c) 2016 by António Meireles <antonio.meireles@reformi.st>.
//
// 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 main
import (
"fmt"
"github.com/TheNewNormal/corectl/components/host/session"
"github.com/TheNewNormal/corectl/components/server"
"github.com/deis/pkg/log"
"github.com/spf13/cobra"
)
var (
panicCmd = &cobra.Command{
Use: "panic [VMids]",
Aliases: []string{"oops", "wtf"},
Short: "Hard kills a running CoreOS instance",
Long: "Hard kills a running CoreOS instance.\nThis feature is " +
"intended as a practical way to test and reproduce both cluster " +
"failure scenarios and layouts resilient to them",
PreRunE: func(cmd *cobra.Command, args []string) (err error) {
session.Caller.CmdLine.BindPFlags(cmd.Flags())
errMsg := fmt.Errorf("This command requires either " +
"one argument to work or just '--random'.")
if session.Caller.CmdLine.GetBool("random") {
if len(args) != 0 {
err = errMsg
}
} else if len(args) != 1 {
err = errMsg
}
return
},
RunE: panicCommand,
}
)
func panicCommand(cmd *cobra.Command, args []string) (err error) {
var (
in server.RPCquery
out *server.RPCreply
random = session.Caller.CmdLine.GetBool("random")
)
if _, err = server.Daemon.Running(); err != nil {
return session.ErrServerUnreachable
}
if !random {
in.Input = args
}
in.Forced = true
if out, err = server.RPCQuery("StopVMs", &in); err != nil {
return
}
if random {
log.Info("'%v' gone", out.Output[0])
}
return
}
func init() {
panicCmd.Flags().BoolP("random", "r", false,
"hard kill a randomly choosen running instance")
if session.AppName() != "corectld" {
rootCmd.AddCommand(panicCmd)
}
}