tidb main 源码
tidb main 代码
文件路径：/br/cmd/br/main.go
package main
import (
"context"
"fmt"
"os"
"os/signal"
"syscall"
"github.com/pingcap/log"
"github.com/spf13/cobra"
"go.uber.org/zap"
)
func main() {
gCtx := context.Background()
ctx, cancel := context.WithCancel(gCtx)
defer cancel()
sc := make(chan os.Signal, 1)
signal.Notify(sc,
syscall.SIGHUP,
syscall.SIGINT,
syscall.SIGTERM,
syscall.SIGQUIT)
go func() {
sig := <-sc
fmt.Printf("\nGot signal [%v] to exit.\n", sig)
log.Warn("received signal to exit", zap.Stringer("signal", sig))
cancel()
fmt.Fprintln(os.Stderr, "gracefully shuting down, press ^C again to force exit")
<-sc
// Even user use SIGTERM to exit, there isn't any checkpoint for resuming,
// hence returning fail exit code.
os.Exit(1)
}()
rootCmd := &cobra.Command{
Use: "br",
Short: "br is a TiDB/TiKV cluster backup restore tool.",
TraverseChildren: true,
SilenceUsage: true,
}
AddFlags(rootCmd)
SetDefaultContext(ctx)
rootCmd.AddCommand(
NewDebugCommand(),
NewBackupCommand(),
NewRestoreCommand(),
NewStreamCommand(),
)
// Outputs cmd.Print to stdout.
rootCmd.SetOut(os.Stdout)
rootCmd.SetArgs(os.Args[1:])
if err := rootCmd.Execute(); err != nil {
cancel()
log.Error("br failed", zap.Error(err))
os.Exit(1) // nolint:gocritic
}
}
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