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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 main
import (
"bytes"
"encoding/json"
"fmt"
"io"
"net/http"
"os"
"strconv"
"github.com/pingcap/errors"
"github.com/pingcap/tiup/components/playground/instance"
"github.com/spf13/cobra"
)
// CommandType send to playground.
type CommandType string
// types of CommandType
const (
ScaleInCommandType CommandType = "scale-in"
ScaleOutCommandType CommandType = "scale-out"
DisplayCommandType CommandType = "display"
)
// Command send to Playground.
type Command struct {
CommandType CommandType
PID int // Set when scale-in
ComponentID string
instance.Config
}
func buildCommands(tp CommandType, opt *BootOptions) (cmds []Command) {
commands := []struct {
comp string
instance.Config
}{
{"pd", opt.PD},
{"tso", opt.TSO},
{"scheduling", opt.Scheduling},
{"tikv", opt.TiKV},
{"pump", opt.Pump},
{"tiflash", opt.TiFlash},
{"tiproxy", opt.TiProxy},
{"tidb", opt.TiDB},
{"ticdc", opt.TiCDC},
{"tikv-cdc", opt.TiKVCDC},
{"drainer", opt.Drainer},
{"dm-master", opt.DMMaster},
{"dm-worker", opt.DMWorker},
}
for _, cmd := range commands {
for i := 0; i < cmd.Num; i++ {
c := Command{
CommandType: tp,
ComponentID: cmd.comp,
Config: cmd.Config,
}
cmds = append(cmds, c)
}
}
return
}
func newScaleOut() *cobra.Command {
var opt BootOptions
cmd := &cobra.Command{
Use: "scale-out instances",
Example: "tiup playground scale-out --db 1",
RunE: func(cmd *cobra.Command, args []string) error {
num, err := scaleOut(args, &opt)
if err != nil {
return err
}
if num == 0 {
return cmd.Help()
}
return nil
},
Hidden: false,
}
cmd.Flags().IntVarP(&opt.TiDB.Num, "db", "", opt.TiDB.Num, "TiDB instance number")
cmd.Flags().IntVarP(&opt.TiKV.Num, "kv", "", opt.TiKV.Num, "TiKV instance number")
cmd.Flags().IntVarP(&opt.PD.Num, "pd", "", opt.PD.Num, "PD instance number")
cmd.Flags().IntVarP(&opt.TSO.Num, "tso", "", opt.TSO.Num, "TSO instance number")
cmd.Flags().IntVarP(&opt.Scheduling.Num, "scheduling", "", opt.Scheduling.Num, "Scheduling instance number")
cmd.Flags().IntVarP(&opt.TiFlash.Num, "tiflash", "", opt.TiFlash.Num, "TiFlash instance number")
cmd.Flags().IntVarP(&opt.TiProxy.Num, "tiproxy", "", opt.TiProxy.Num, "TiProxy instance number")
cmd.Flags().IntVarP(&opt.TiCDC.Num, "ticdc", "", opt.TiCDC.Num, "TiCDC instance number")
cmd.Flags().IntVarP(&opt.TiKVCDC.Num, "kvcdc", "", opt.TiKVCDC.Num, "TiKV-CDC instance number")
cmd.Flags().IntVarP(&opt.Pump.Num, "pump", "", opt.Pump.Num, "Pump instance number")
cmd.Flags().IntVarP(&opt.Drainer.Num, "drainer", "", opt.Pump.Num, "Drainer instance number")
cmd.Flags().StringVarP(&opt.TiDB.Host, "db.host", "", opt.TiDB.Host, "Playground TiDB host. If not provided, TiDB will still use `host` flag as its host")
cmd.Flags().StringVarP(&opt.PD.Host, "pd.host", "", opt.PD.Host, "Playground PD host. If not provided, PD will still use `host` flag as its host")
cmd.Flags().StringVarP(&opt.TSO.Host, "tso.host", "", opt.TSO.Host, "Playground TSO host. If not provided, TSO will still use `host` flag as its host")
cmd.Flags().StringVarP(&opt.Scheduling.Host, "scheduling.host", "", opt.Scheduling.Host, "Playground Scheduling host. If not provided, Scheduling will still use `host` flag as its host")
cmd.Flags().StringVarP(&opt.TiProxy.Host, "tiproxy.host", "", opt.PD.Host, "Playground TiProxy host. If not provided, TiProxy will still use `host` flag as its host")
cmd.Flags().IntVarP(&opt.DMMaster.Num, "dm-master", "", opt.DMMaster.Num, "DM-master instance number")
cmd.Flags().IntVarP(&opt.DMWorker.Num, "dm-worker", "", opt.DMWorker.Num, "DM-worker instance number")
cmd.Flags().StringVarP(&opt.TiDB.ConfigPath, "db.config", "", opt.TiDB.ConfigPath, "TiDB instance configuration file")
cmd.Flags().StringVarP(&opt.TiKV.ConfigPath, "kv.config", "", opt.TiKV.ConfigPath, "TiKV instance configuration file")
cmd.Flags().StringVarP(&opt.PD.ConfigPath, "pd.config", "", opt.PD.ConfigPath, "PD instance configuration file")
cmd.Flags().StringVarP(&opt.TSO.ConfigPath, "tso.config", "", opt.TSO.ConfigPath, "TSO instance configuration file")
cmd.Flags().StringVarP(&opt.Scheduling.ConfigPath, "scheduling.config", "", opt.Scheduling.ConfigPath, "Scheduling instance configuration file")
cmd.Flags().StringVarP(&opt.TiFlash.ConfigPath, "tiflash.config", "", opt.TiFlash.ConfigPath, "TiFlash instance configuration file")
cmd.Flags().StringVarP(&opt.TiProxy.ConfigPath, "tiproxy.config", "", opt.TiProxy.ConfigPath, "TiProxy instance configuration file")
cmd.Flags().StringVarP(&opt.Pump.ConfigPath, "pump.config", "", opt.Pump.ConfigPath, "Pump instance configuration file")
cmd.Flags().StringVarP(&opt.Drainer.ConfigPath, "drainer.config", "", opt.Drainer.ConfigPath, "Drainer instance configuration file")
cmd.Flags().StringVarP(&opt.DMMaster.ConfigPath, "dm-master.config", "", opt.DMMaster.ConfigPath, "DM-master instance configuration file")
cmd.Flags().StringVarP(&opt.DMWorker.ConfigPath, "dm-worker.config", "", opt.DMWorker.ConfigPath, "DM-worker instance configuration file")
cmd.Flags().StringVarP(&opt.TiDB.BinPath, "db.binpath", "", opt.TiDB.BinPath, "TiDB instance binary path")
cmd.Flags().StringVarP(&opt.TiKV.BinPath, "kv.binpath", "", opt.TiKV.BinPath, "TiKV instance binary path")
cmd.Flags().StringVarP(&opt.PD.BinPath, "pd.binpath", "", opt.PD.BinPath, "PD instance binary path")
cmd.Flags().StringVarP(&opt.TSO.BinPath, "tso.binpath", "", opt.TSO.BinPath, "TSO instance binary path")
cmd.Flags().StringVarP(&opt.Scheduling.BinPath, "scheduling.binpath", "", opt.Scheduling.BinPath, "Scheduling instance binary path")
cmd.Flags().StringVarP(&opt.TiFlash.BinPath, "tiflash.binpath", "", opt.TiFlash.BinPath, "TiFlash instance binary path")
cmd.Flags().StringVarP(&opt.TiProxy.BinPath, "tiproxy.binpath", "", opt.TiProxy.BinPath, "TiProxy instance binary path")
cmd.Flags().StringVarP(&opt.TiCDC.BinPath, "ticdc.binpath", "", opt.TiCDC.BinPath, "TiCDC instance binary path")
cmd.Flags().StringVarP(&opt.TiKVCDC.BinPath, "kvcdc.binpath", "", opt.TiKVCDC.BinPath, "TiKVCDC instance binary path")
cmd.Flags().StringVarP(&opt.Pump.BinPath, "pump.binpath", "", opt.Pump.BinPath, "Pump instance binary path")
cmd.Flags().StringVarP(&opt.Drainer.BinPath, "drainer.binpath", "", opt.Drainer.BinPath, "Drainer instance binary path")
cmd.Flags().StringVarP(&opt.DMMaster.BinPath, "dm-master.binpath", "", opt.DMMaster.BinPath, "DM-master instance binary path")
cmd.Flags().StringVarP(&opt.DMWorker.BinPath, "dm-worker.binpath", "", opt.DMWorker.BinPath, "DM-worker instance binary path")
return cmd
}
func newScaleIn() *cobra.Command {
var pids []int
cmd := &cobra.Command{
Use: "scale-in a instance with specified pid",
Example: "tiup playground scale-in --pid 234 # You can get pid by `tiup playground display`",
RunE: func(cmd *cobra.Command, args []string) error {
if len(pids) == 0 {
return cmd.Help()
}
return scaleIn(pids)
},
Hidden: false,
}
cmd.Flags().IntSliceVar(&pids, "pid", nil, "pid of instance to be scale in")
return cmd
}
func newDisplay() *cobra.Command {
cmd := &cobra.Command{
Use: "display the instances.",
Hidden: false,
RunE: func(cmd *cobra.Command, args []string) error {
return display(args)
},
}
return cmd
}
func scaleIn(pids []int) error {
port, err := targetTag()
if err != nil {
return err
}
var cmds []Command
for _, pid := range pids {
c := Command{
CommandType: ScaleInCommandType,
PID: pid,
}
cmds = append(cmds, c)
}
addr := "127.0.0.1:" + strconv.Itoa(port)
return sendCommandsAndPrintResult(cmds, addr)
}
func scaleOut(args []string, opt *BootOptions) (num int, err error) {
port, err := targetTag()
if err != nil {
return 0, err
}
cmds := buildCommands(ScaleOutCommandType, opt)
if len(cmds) == 0 {
return 0, nil
}
addr := "127.0.0.1:" + strconv.Itoa(port)
return len(cmds), sendCommandsAndPrintResult(cmds, addr)
}
func display(args []string) error {
port, err := targetTag()
if err != nil {
return err
}
c := Command{
CommandType: DisplayCommandType,
}
addr := "127.0.0.1:" + strconv.Itoa(port)
return sendCommandsAndPrintResult([]Command{c}, addr)
}
func sendCommandsAndPrintResult(cmds []Command, addr string) error {
for _, cmd := range cmds {
data, err := json.Marshal(&cmd)
if err != nil {
return errors.AddStack(err)
}
url := fmt.Sprintf("http://%s/command", addr)
resp, err := http.Post(url, "application/json", bytes.NewReader(data))
if err != nil {
return errors.AddStack(err)
}
defer resp.Body.Close()
_, err = io.Copy(os.Stdout, resp.Body)
if err != nil {
return errors.AddStack(err)
}
}
return nil
}
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