func commandWorker(wi *Instance, wr *wrangler.Wrangler, args []string, cell string, runFromCli bool) (Worker, error) {
action := args[0]
actionLowerCase := strings.ToLower(action)
for _, group := range commands {
for _, cmd := range group.Commands {
if strings.ToLower(cmd.Name) == actionLowerCase {
var subFlags *flag.FlagSet
if runFromCli {
subFlags = flag.NewFlagSet(action, flag.ExitOnError)
} else {
subFlags = flag.NewFlagSet(action, flag.ContinueOnError)
}
// The command may be run from an RPC and may not log to the console.
// The Wrangler logger defines where the output has to go.
subFlags.SetOutput(logutil.NewLoggerWriter(wr.Logger()))
subFlags.Usage = func() {
wr.Logger().Printf("Usage: %s %s %s\n\n", os.Args[0], cmd.Name, cmd.Params)
wr.Logger().Printf("%s\n\n", cmd.Help)
subFlags.PrintDefaults()
}
return cmd.Method(wi, wr, subFlags, args[1:])
}
}
}
if runFromCli {
flag.Usage()
} else {
PrintAllCommands(wr.Logger())
}
return nil, fmt.Errorf("unknown command: %v", action)
}
func NewSplitStrategy(logger logutil.Logger, argsStr string) (*SplitStrategy, error) {
var args []string
if argsStr != "" {
args = strings.Split(argsStr, " ")
}
flagSet := flag.NewFlagSet("strategy", flag.ContinueOnError)
flagSet.SetOutput(logutil.NewLoggerWriter(logger))
flagSet.Usage = func() {
logger.Printf("Strategy flag has the following options:\n")
flagSet.PrintDefaults()
}
populateBlpCheckpoint := flagSet.Bool("populate_blp_checkpoint", false, "populates the blp checkpoint table")
dontStartBinlogPlayer := flagSet.Bool("dont_start_binlog_player", false, "do not start the binlog player after restore is complete")
skipSetSourceShards := flagSet.Bool("skip_set_source_shards", false, "do not set the SourceShar field on destination shards")
if err := flagSet.Parse(args); err != nil {
return nil, fmt.Errorf("cannot parse strategy: %v", err)
}
if flagSet.NArg() > 0 {
return nil, fmt.Errorf("strategy doesn't have positional arguments")
}
return &SplitStrategy{
PopulateBlpCheckpoint: *populateBlpCheckpoint,
DontStartBinlogPlayer: *dontStartBinlogPlayer,
SkipSetSourceShards: *skipSetSourceShards,
}, nil
}
func init() {
logger := logutil.NewConsoleLogger()
flag.CommandLine.SetOutput(logutil.NewLoggerWriter(logger))
flag.Usage = func() {
logger.Printf("Usage: %s [global parameters] command [command parameters]\n", os.Args[0])
logger.Printf("\nThe global optional parameters are:\n")
flag.PrintDefaults()
logger.Printf("\nThe commands are listed below, sorted by group. Use '%s <command> -h' for more help.\n\n", os.Args[0])
vtctl.PrintAllCommands(logger)
}
}
