tidb main 源码
tidb main 代码
文件路径：/dumpling/cmd/dumpling/main.go
// Copyright 2019 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 (
"context"
"fmt"
"os"
"github.com/pingcap/tidb/dumpling/cli"
"github.com/pingcap/tidb/dumpling/export"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/collectors"
"github.com/spf13/pflag"
"go.uber.org/zap"
)
func main() {
pflag.Usage = func() {
fmt.Fprint(os.Stderr, "Dumpling is a CLI tool that helps you dump MySQL/TiDB data\n\nUsage:\n dumpling [flags]\n\nFlags:\n")
pflag.PrintDefaults()
}
printVersion := pflag.BoolP("version", "V", false, "Print Dumpling version")
conf := export.DefaultConfig()
conf.DefineFlags(pflag.CommandLine)
pflag.Parse()
if printHelp, err := pflag.CommandLine.GetBool(export.FlagHelp); printHelp || err != nil {
if err != nil {
fmt.Printf("\nGet help flag error: %s\n", err)
}
pflag.Usage()
return
}
println(cli.LongVersion())
if *printVersion {
return
}
err := conf.ParseFromFlags(pflag.CommandLine)
if err != nil {
fmt.Printf("\nparse arguments failed: %+v\n", err)
os.Exit(1)
}
if pflag.NArg() > 0 {
fmt.Printf("\nmeet some unparsed arguments, please check again: %+v\n", pflag.Args())
os.Exit(1)
}
registry := conf.PromRegistry
registry.MustRegister(collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}))
registry.MustRegister(collectors.NewGoCollector())
if gatherer, ok := registry.(prometheus.Gatherer); ok {
prometheus.DefaultGatherer = gatherer
}
dumper, err := export.NewDumper(context.Background(), conf)
if err != nil {
fmt.Printf("\ncreate dumper failed: %s\n", err.Error())
os.Exit(1)
}
err = dumper.Dump()
_ = dumper.Close()
if err != nil {
dumper.L().Error("dump failed error stack info", zap.Error(err))
fmt.Printf("\ndump failed: %s\n", err.Error())
os.Exit(1)
}
dumper.L().Info("dump data successfully, dumpling will exit now")
}
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