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// Copyright 2020 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"fmt"
"os"
"path/filepath"
"github.com/pingcap/tiup/pkg/environment"
"github.com/pingcap/tiup/pkg/localdata"
"github.com/pingcap/tiup/pkg/set"
"github.com/pingcap/tiup/pkg/utils"
gops "github.com/shirou/gopsutil/process"
"github.com/spf13/cobra"
)
func newCleanCmd() *cobra.Command {
var all bool
cmd := &cobra.Command{
Use: "clean <name>",
Short: "Clean the data of instantiated components",
RunE: func(cmd *cobra.Command, args []string) error {
env := environment.GlobalEnv()
if len(args) == 0 && !all {
return cmd.Help()
}
return cleanData(env, args, all)
},
}
cmd.Flags().BoolVar(&all, "all", false, "Clean all data of instantiated components")
return cmd
}
func cleanData(env *environment.Environment, names []string, all bool) error {
dataDir := env.LocalPath(localdata.DataParentDir)
if utils.IsNotExist(dataDir) {
return nil
}
dirs, err := os.ReadDir(dataDir)
if err != nil {
return err
}
clean := set.NewStringSet(names...)
for _, dir := range dirs {
if !dir.IsDir() {
continue
}
if !all && !clean.Exist(dir.Name()) {
continue
}
process, err := env.Profile().ReadMetaFile(dir.Name())
if err != nil {
return err
}
if process == nil {
fmt.Fprintf(os.Stderr, "Can't clean directory due to missing meta file: %s\n",
filepath.Join(dataDir, dir.Name()))
continue
}
if p, err := gops.NewProcess(int32(process.Pid)); err == nil {
pName, err := p.Name()
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to get process info for `%s`, pid: %v\n",
process.Component, process.Pid)
} else {
if pName != "tiup-playground" {
fmt.Printf("Process name mismatch (`%s` != `tiup-playground`, not killing it.\n",
pName)
} else {
fmt.Printf("Kill instance of `%s`, pid: %v\n",
process.Component, process.Pid)
if err := p.Kill(); err != nil {
return err
}
}
}
}
if err := os.RemoveAll(filepath.Join(dataDir, dir.Name())); err != nil {
return err
}
fmt.Printf("Clean instance of `%s`, directory: %s\n", process.Component, process.Dir)
}
return nil
}
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