github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/cmd/dm-master/main.go (about)

     1  // Copyright 2019 PingCAP, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package main
    15  
    16  import (
    17  	"context"
    18  	"flag"
    19  	"fmt"
    20  	"os"
    21  	"os/signal"
    22  	"strings"
    23  	"syscall"
    24  
    25  	"github.com/pingcap/errors"
    26  	"github.com/pingcap/tiflow/dm/ctl/common"
    27  	"github.com/pingcap/tiflow/dm/master"
    28  	"github.com/pingcap/tiflow/dm/pkg/encrypt"
    29  	"github.com/pingcap/tiflow/dm/pkg/log"
    30  	"github.com/pingcap/tiflow/dm/pkg/terror"
    31  	"github.com/pingcap/tiflow/dm/pkg/utils"
    32  	"github.com/pingcap/tiflow/pkg/version"
    33  	"go.uber.org/zap"
    34  )
    35  
    36  func main() {
    37  	// 1. parse config
    38  	cfg := master.NewConfig()
    39  	err := cfg.Parse(os.Args[1:])
    40  	switch errors.Cause(err) {
    41  	case nil:
    42  	case flag.ErrHelp:
    43  		os.Exit(0)
    44  	default:
    45  		common.PrintLinesf("parse cmd flags err: %s", terror.Message(err))
    46  		os.Exit(2)
    47  	}
    48  
    49  	// 2. init logger
    50  	err = log.InitLogger(&log.Config{
    51  		File:   cfg.LogFile,
    52  		Level:  strings.ToLower(cfg.LogLevel),
    53  		Format: cfg.LogFormat,
    54  	})
    55  	if err != nil {
    56  		common.PrintLinesf("init logger error %s", terror.Message(err))
    57  		os.Exit(2)
    58  	}
    59  	encrypt.InitCipher(cfg.SecretKey)
    60  
    61  	utils.LogHTTPProxies(true)
    62  
    63  	// 3. print process version information
    64  	version.LogVersionInfo("dm-master")
    65  	log.L().Info("", zap.Stringer("dm-master config", cfg))
    66  
    67  	// 4. start the server
    68  	ctx, cancel := context.WithCancel(context.Background())
    69  	server := master.NewServer(cfg)
    70  	err = server.Start(ctx)
    71  	if err != nil {
    72  		log.L().Error("fail to start dm-master", zap.Error(err))
    73  		os.Exit(2)
    74  	}
    75  
    76  	// 5. wait for stopping the process
    77  	sc := make(chan os.Signal, 1)
    78  	signal.Notify(sc,
    79  		syscall.SIGHUP,
    80  		syscall.SIGINT,
    81  		syscall.SIGTERM,
    82  		syscall.SIGQUIT)
    83  	go func() {
    84  		sig := <-sc
    85  		log.L().Info("got signal to exit", zap.Stringer("signal", sig))
    86  		cancel()
    87  	}()
    88  	<-ctx.Done()
    89  
    90  	// 6. close the server
    91  	server.Close()
    92  	log.L().Info("dm-master exit")
    93  
    94  	// 7. flush log
    95  	if syncErr := log.L().Sync(); syncErr != nil {
    96  		fmt.Fprintln(os.Stderr, "sync log failed", syncErr)
    97  		os.Exit(1)
    98  	}
    99  }