Golang FlagSet.Bool方法代码示例

func multisnapshotCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) {
	concurrency := subFlags.Int("concurrency", 8, "how many compression jobs to run simultaneously")
	spec := subFlags.String("spec", "-", "shard specification")
	tablesString := subFlags.String("tables", "", "dump only this comma separated list of tables")
	skipSlaveRestart := subFlags.Bool("skip-slave-restart", false, "after the snapshot is done, do not restart slave replication")
	maximumFilesize := subFlags.Uint64("maximum-file-size", 128*1024*1024, "the maximum size for an uncompressed data file")
	subFlags.Parse(args)
	if subFlags.NArg() != 2 {
		relog.Fatal("action multisnapshot requires <db name> <key name>")
	}

	shards, err := key.ParseShardingSpec(*spec)
	if err != nil {
		relog.Fatal("multisnapshot failed: %v", err)
	}
	var tables []string
	if *tablesString != "" {
		tables = strings.Split(*tablesString, ",")
	}
	filenames, err := mysqld.CreateMultiSnapshot(shards, subFlags.Arg(0), subFlags.Arg(1), tabletAddr, false, *concurrency, tables, *skipSlaveRestart, *maximumFilesize, nil)
	if err != nil {
		relog.Fatal("multisnapshot failed: %v", err)
	} else {
		relog.Info("manifest locations: %v", filenames)
	}
}

// ApplyWithError populates the flag given the flag set and environment
func (f BoolTFlag) ApplyWithError(set *flag.FlagSet) error {
	val := true
	if f.EnvVar != "" {
		for _, envVar := range strings.Split(f.EnvVar, ",") {
			envVar = strings.TrimSpace(envVar)
			if envVal, ok := syscall.Getenv(envVar); ok {
				if envVal == "" {
					val = false
					break
				}

				envValBool, err := strconv.ParseBool(envVal)
				if err != nil {
					return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
				}

				val = envValBool
				break
			}
		}
	}

	eachName(f.Name, func(name string) {
		if f.Destination != nil {
			set.BoolVar(f.Destination, name, val, f.Usage)
			return
		}
		set.Bool(name, val, f.Usage)
	})

	return nil
}

// newCommandPub creates and returns a pub command.
func newCommandPub(args []string, cli *client.Client) (command, error) {
	// Create a flag set.
	var flg flag.FlagSet

	// Define the flags.
	qos := flg.Uint("q", uint(mqtt.QoS0), "QoS")
	retain := flg.Bool("r", false, "Retain")
	topicName := flg.String("t", "", "Topic Name")
	message := flg.String("m", "", "Application Message")

	// Parse the flag.
	if err := flg.Parse(args); err != nil {
		return nil, errCmdArgsParse
	}

	// Create a pub command.
	cmd := &commandPub{
		cli: cli,
		publishOpts: &client.PublishOptions{
			QoS:       byte(*qos),
			Retain:    *retain,
			TopicName: []byte(*topicName),
			Message:   []byte(*message),
		},
	}

	// Return the command.
	return cmd, nil
}

func TestLoadConfig(t *testing.T) {
	var flagSet flag.FlagSet
	a := flagSet.Int("a", -1, "for test")
	b := flagSet.Bool("b", true, "for test")
	c := flagSet.String("c", "-1", "for test")
	da := flagSet.Int("d.a", -1, "for test")
	dd := flagSet.Bool("d.d", false, "for test")
	dc := flagSet.String("d.c", "-1", "for test")
	e := loadConfig("config_test.txt", &flagSet, false)
	if nil != e {
		t.Error(e)
		return
	}

	if *a != 1 {
		t.Error("a != 1")
	}
	if !*b {
		t.Error("b != true")
	}
	if "abc" != *c {
		t.Error("c != \"abc\"")
	}
	if *da != 1323 {
		t.Error("d.a != 1323")
	}
	if !*dd {
		t.Error("db != true")
	}
	if "67" != *dc {
		t.Errorf("dc != \"67\", actual is %s", *dc)
	}
}

func commandSplitClone(wi *Instance, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) (Worker, error) {
	online := subFlags.Bool("online", defaultOnline, "do online copy (optional approximate copy, source and destination tablets will not be put out of serving, minimizes downtime during offline copy)")
	offline := subFlags.Bool("offline", defaultOffline, "do offline copy (exact copy at a specific GTID, required before shard migration, source and destination tablets will be put out of serving during copy)")
	excludeTables := subFlags.String("exclude_tables", "", "comma separated list of tables to exclude")
	strategy := subFlags.String("strategy", "", "which strategy to use for restore, use 'vtworker SplitClone --strategy=-help k/s' for more info")
	sourceReaderCount := subFlags.Int("source_reader_count", defaultSourceReaderCount, "number of concurrent streaming queries to use on the source")
	writeQueryMaxRows := subFlags.Int("write_query_max_rows", defaultWriteQueryMaxRows, "maximum number of rows per write query")
	writeQueryMaxSize := subFlags.Int("write_query_max_size", defaultWriteQueryMaxSize, "maximum size (in bytes) per write query")
	writeQueryMaxRowsDelete := subFlags.Int("write_query_max_rows_delete", defaultWriteQueryMaxRows, "maximum number of rows per DELETE FROM write query")
	minTableSizeForSplit := subFlags.Int("min_table_size_for_split", defaultMinTableSizeForSplit, "tables bigger than this size on disk in bytes will be split into source_reader_count chunks if possible")
	destinationWriterCount := subFlags.Int("destination_writer_count", defaultDestinationWriterCount, "number of concurrent RPCs to execute on the destination")
	minHealthyRdonlyTablets := subFlags.Int("min_healthy_rdonly_tablets", defaultMinHealthyRdonlyTablets, "minimum number of healthy RDONLY tablets in the source and destination shard at start")
	maxTPS := subFlags.Int64("max_tps", defaultMaxTPS, "if non-zero, limit copy to maximum number of (write) transactions/second on the destination (unlimited by default)")
	if err := subFlags.Parse(args); err != nil {
		return nil, err
	}
	if subFlags.NArg() != 1 {
		subFlags.Usage()
		return nil, fmt.Errorf("command SplitClone requires <keyspace/shard>")
	}

	keyspace, shard, err := topoproto.ParseKeyspaceShard(subFlags.Arg(0))
	if err != nil {
		return nil, err
	}
	var excludeTableArray []string
	if *excludeTables != "" {
		excludeTableArray = strings.Split(*excludeTables, ",")
	}
	worker, err := NewSplitCloneWorker(wr, wi.cell, keyspace, shard, *online, *offline, excludeTableArray, *strategy, *sourceReaderCount, *writeQueryMaxRows, *writeQueryMaxSize, *writeQueryMaxRowsDelete, uint64(*minTableSizeForSplit), *destinationWriterCount, *minHealthyRdonlyTablets, *maxTPS)
	if err != nil {
		return nil, fmt.Errorf("cannot create split clone worker: %v", err)
	}
	return worker, nil
}

func commandWorkflowCreate(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
	if WorkflowManager == nil {
		return fmt.Errorf("no workflow.Manager registered")
	}

	skipStart := subFlags.Bool("skip_start", false, "If set, the workflow will not be started.")
	if err := subFlags.Parse(args); err != nil {
		return err
	}
	if subFlags.NArg() < 1 {
		return fmt.Errorf("the <factoryName> argument is required for the WorkflowCreate command")
	}
	factoryName := subFlags.Arg(0)

	uuid, err := WorkflowManager.Create(ctx, factoryName, subFlags.Args()[1:])
	if err != nil {
		return err
	}
	wr.Logger().Printf("uuid: %v\n", uuid)

	if !*skipStart {
		return WorkflowManager.Start(ctx, uuid)
	}
	return nil
}

func commandVtGateExecute(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
	server := subFlags.String("server", "", "VtGate server to connect to")
	bindVariables := newBindvars(subFlags)
	connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vtgate client")
	tabletType := subFlags.String("tablet_type", "master", "tablet type to query")
	json := subFlags.Bool("json", false, "Output JSON instead of human-readable table")

	if err := subFlags.Parse(args); err != nil {
		return err
	}
	if subFlags.NArg() != 1 {
		return fmt.Errorf("the <sql> argument is required for the VtGateExecute command")
	}
	t, err := parseTabletType(*tabletType, []topodatapb.TabletType{topodatapb.TabletType_MASTER, topodatapb.TabletType_REPLICA, topodatapb.TabletType_RDONLY})
	if err != nil {
		return err
	}

	vtgateConn, err := vtgateconn.Dial(ctx, *server, *connectTimeout)
	if err != nil {
		return fmt.Errorf("error connecting to vtgate '%v': %v", *server, err)
	}
	defer vtgateConn.Close()
	qr, err := vtgateConn.Execute(ctx, subFlags.Arg(0), *bindVariables, t)
	if err != nil {
		return fmt.Errorf("Execute failed: %v", err)
	}
	if *json {
		return printJSON(wr.Logger(), qr)
	}
	printQueryResult(loggerWriter{wr.Logger()}, qr)
	return nil
}

func (cmd *editDescriptionCmd) Flags(fs *flag.FlagSet) *flag.FlagSet {
	cmd.ById = fs.Bool(drive.CLIOptionId, false, "open by id instead of path")
	cmd.Description = fs.String(drive.CLIOptionDescription, "", drive.DescDescription)
	cmd.Piped = fs.Bool(drive.CLIOptionPiped, false, drive.DescPiped)

	return fs
}

func (gc *GetCommand) Flags(fs *flag.FlagSet) *flag.FlagSet {
	gc.header = fs.Bool("H", false, "Display record header")
	gc.test = fs.Bool("t", false, "Test that the record can be retrieved")
	gc.separator = fs.String("s", "====", "Record separator")

	return fs
}

func (c *DaemonCmd) Flags(fs *flag.FlagSet) {
	c.dbfile = fs.String("o", "ci.db", "override the default local file name")
	c.port = fs.Int("p", 2020, "override the default local port")
	c.hookport = fs.Int("hp", 2121, "override the default hook port ")
	c.hook = fs.Bool("hook", false, "also start an http Hook server (Get returns a status, Post fire a build)")

}

// NewGoCmdWithFlags like NewGoCmd, but wl also parse flags configured i flagset
func NewGoCmdWithFlags(flagset *flag.FlagSet, workdir string, args ...string) (*GoCmd, error) {
	if len(args) < 2 {
		return nil, errors.New("GoCmd must have at least two arguments (e.g. go build)")
	}
	if sort.SearchStrings([]string{"build", "run", "test"}, args[1]) > -1 {
		flagset.Int("p", runtime.NumCPU(), "number or parallel builds")
		for _, f := range []string{"x", "v", "n", "a", "work"} {
			flagset.Bool(f, false, "")
		}
		for _, f := range []string{"compiler", "gccgoflags", "gcflags", "ldflags", "tags"} {
			flagset.String(f, "", "")
		}
	}
	switch args[1] {
	case "run":
	case "build":
		flagset.String("o", "", "output: output file")
	case "test":
		for _, f := range []string{"i", "c"} {
			flagset.Bool(f, false, "")
		}
		for _, testflag := range TestFlags {
			flagset.String(testflag, "", "")
			flagset.String("test."+testflag, "", "")
		}
		flagset.Bool("short", false, "")
		flagset.Bool("test.short", false, "")
		flagset.Bool("test.v", false, "")
	default:
		return nil, errors.New("Currently only build run and test commands supported. Sorry.")
	}
	if err := flagset.Parse(args[2:]); err != nil {
		return nil, err
	}
	var params, extra []string
	switch args[1] {
	case "build":
		params = flagset.Args()
	case "run":
		for i, param := range flagset.Args() {
			if !strings.HasSuffix(param, ".go") {
				extra = flagset.Args()[i:]
				break
			}
			params = append(params, param)
		}
	case "test":
		for i, param := range flagset.Args() {
			if strings.HasPrefix(param, "-") {
				extra = flagset.Args()[i:]
				break
			}
			params = append(params, param)
		}
	default:
		return nil, errors.New("Currently only build run and test commands supported")
	}
	return &GoCmd{make(map[string]string), workdir, args[0], args[1], FromFlagSet(flagset), params, extra}, nil
}

func (cmd *touchCmd) Flags(fs *flag.FlagSet) *flag.FlagSet {
	cmd.hidden = fs.Bool(drive.HiddenKey, false, "allows pushing of hidden paths")
	cmd.recursive = fs.Bool("r", false, "toggles recursive touching")
	cmd.matches = fs.Bool(drive.MatchesKey, false, "search by prefix and touch")
	cmd.quiet = fs.Bool(drive.QuietKey, false, "if set, do not log anything but errors")
	cmd.byId = fs.Bool(drive.CLIOptionId, false, "share by id instead of path")
	return fs
}

func teardownCmd(mysqld *mysqlctl.Mysqld, subFlags *flag.FlagSet, args []string) {
	force := subFlags.Bool("force", false, "will remove the root directory even if mysqld shutdown fails")
	subFlags.Parse(args)

	if err := mysqlctl.Teardown(mysqld, *force); err != nil {
		relog.Fatal("failed teardown mysql (forced? %v): %v", *force, err)
	}
}

func init() {
	var fs flag.FlagSet
	goimport := fs.Bool("goimport", false, "use goimport instead of gofmt")
	commands["fmt"] = &Command{
		fs: &fs,
		do: func(ctx *Context) { doFormat(ctx, *goimport) },
	}
}

func init() {
	var fs flag.FlagSet
	all := fs.Bool("all", false, "show unexported identifiers")
	commands["doc"] = &Command{
		fs: &fs,
		do: func(ctx *Context) { os.Exit(doDoc(ctx, *all)) },
	}
}