/
shutdown.go
90 lines (75 loc) · 2.18 KB
/
shutdown.go
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/*
* Tencent is pleased to support the open source community by making 蓝鲸 available.
* Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
* Licensed under the MIT License (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
* http://opensource.org/licenses/MIT
* 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 (
"fmt"
"os"
"os/exec"
"strings"
"syscall"
"github.com/spf13/cobra"
)
func init() {
rootCmd.AddCommand(NewShutdownCommand())
}
type shutdownConf struct {
showPids bool
pids string
}
func NewShutdownCommand() *cobra.Command {
conf := new(shutdownConf)
cmd := &cobra.Command{
Use: "shutdown",
Short: "graceful shutdown",
RunE: func(cmd *cobra.Command, args []string) error {
return runShutdown(conf)
},
}
conf.addFlags(cmd)
return cmd
}
func (c *shutdownConf) addFlags(cmd *cobra.Command) {
cmd.Flags().StringVar(&c.pids, "pids", "", "the processes to be shutdown, separated by comma")
cmd.Flags().BoolVar(&c.showPids, "show-pids", false, "show cmdb processes pid")
}
type shutdownService struct {
pids []int
}
func newShutdownService() *shutdownService {
return new(shutdownService)
}
func runShutdown(c *shutdownConf) error {
srv := newShutdownService()
if c.pids != "" {
pids := strings.Split(c.pids, ",")
return srv.shutdown(pids)
}
if c.showPids {
return srv.showPids()
}
return nil
}
func (s *shutdownService) shutdown(pids []string) error {
for _, pid := range pids {
cmd := exec.Command("kill", fmt.Sprintf("-%d", int(syscall.SIGTERM)), pid)
if err := cmd.Run(); err != nil {
return err
}
}
return nil
}
func (s *shutdownService) showPids() error {
fmt.Println("Pid\tProcess\tAddrPort")
cmd := exec.Command("/bin/sh", "-c", `ps -ef | grep cmdb_ | grep -v "grep" | awk '{print $2"\t"$8"\t"$9}'`)
cmd.Stdout = os.Stdout
return cmd.Run()
}