/
zk.go
161 lines (140 loc) · 3.68 KB
/
zk.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 (
"bytes"
"configcenter/src/tools/cmdb_ctl/app/config"
"encoding/json"
"errors"
"fmt"
"os"
"github.com/spf13/cobra"
)
func init() {
rootCmd.AddCommand(NewZkCommand())
}
type zkConf struct {
path string
}
func NewZkCommand() *cobra.Command {
conf := new(zkConf)
cmd := &cobra.Command{
Use: "zk",
Short: "zookeeper operations",
Run: func(cmd *cobra.Command, args []string) {
_ = cmd.Help()
},
}
subCmds := make([]*cobra.Command, 0)
subCmds = append(subCmds, &cobra.Command{
Use: "ls",
Short: "list children of specified zookeeper node",
RunE: func(cmd *cobra.Command, args []string) error {
return runZkLsCmd(conf)
},
})
subCmds = append(subCmds, &cobra.Command{
Use: "get",
Short: "get value of specified zookeeper node",
RunE: func(cmd *cobra.Command, args []string) error {
return runZkGetCmd(conf)
},
})
subCmds = append(subCmds, &cobra.Command{
Use: "del",
Short: "delete specified zookeeper node",
RunE: func(cmd *cobra.Command, args []string) error {
return runZkDelCmd(conf)
},
})
value := new(string)
setCmd := &cobra.Command{
Use: "set",
Short: "set value of specified zookeeper node",
RunE: func(cmd *cobra.Command, args []string) error {
return runZkSetCmd(conf, *value)
},
}
setCmd.Flags().StringVar(value, "value", "", "the value to be set")
_ = setCmd.MarkFlagRequired("value")
subCmds = append(subCmds, setCmd)
for _, subCmd := range subCmds {
cmd.AddCommand(subCmd)
}
conf.addFlags(cmd)
return cmd
}
func (c *zkConf) addFlags(cmd *cobra.Command) {
cmd.PersistentFlags().StringVar(&c.path, "zk-path", "", "the zookeeper resource path")
}
type zkService struct {
service *config.Service
path string
}
func newZkService(zkaddr string, path string) (*zkService, error) {
if path == "" {
return nil, errors.New("zk-path must be set")
}
service, err := config.NewZkService(zkaddr)
if err != nil {
return nil, err
}
return &zkService{
service: service,
path: path,
}, nil
}
func runZkLsCmd(c *zkConf) error {
srv, err := newZkService(config.Conf.ZkAddr, c.path)
if err != nil {
return err
}
children, err := srv.service.ZkCli.GetChildren(srv.path)
if err != nil {
return err
}
for _, child := range children {
fmt.Fprintf(os.Stdout, "%s\n", child)
}
return nil
}
func runZkGetCmd(c *zkConf) error {
srv, err := newZkService(config.Conf.ZkAddr, c.path)
if err != nil {
return err
}
data, err := srv.service.ZkCli.Get(srv.path)
if err != nil {
return err
}
var pretty bytes.Buffer
err = json.Indent(&pretty, []byte(data), "", "\t")
if err != nil {
return err
}
fmt.Fprintln(os.Stdout, pretty.String())
return nil
}
func runZkDelCmd(c *zkConf) error {
srv, err := newZkService(config.Conf.ZkAddr, c.path)
if err != nil {
return err
}
return srv.service.ZkCli.Del(srv.path, -1)
}
func runZkSetCmd(c *zkConf, value string) error {
srv, err := newZkService(config.Conf.ZkAddr, c.path)
if err != nil {
return err
}
return srv.service.ZkCli.Set(srv.path, value, -1)
}