Exemple #1
0
// Scale grows or shrinks the number of running components.
// Currently "router", "registry" and "store-gateway" are the only types that can be scaled.
func Scale(targets []string, b backend.Backend) error {
	var wg sync.WaitGroup

	for _, target := range targets {
		component, num, err := splitScaleTarget(target)
		if err != nil {
			return err
		}
		// the router, registry, and store-gateway are the only component that can scale at the moment
		if !strings.Contains(component, "router") && !strings.Contains(component, "registry") && !strings.Contains(component, "store-gateway") {
			return fmt.Errorf("cannot scale %s component", component)
		}
		b.Scale(component, num, &wg, Stdout, Stderr)
		wg.Wait()
	}
	return nil
}
Exemple #2
0
// Scale grows or shrinks the number of running components.
// Currently "router", "registry" and "store-gateway" are the only types that can be scaled.
func Scale(targets []string, b backend.Backend) error {
	outchan := make(chan string)
	errchan := make(chan error)
	var wg sync.WaitGroup

	go printState(outchan, errchan, 500*time.Millisecond)

	for _, target := range targets {
		component, num, err := splitScaleTarget(target)
		if err != nil {
			return err
		}
		// the router, registry, and store-gateway are the only component that can scale at the moment
		if !strings.Contains(component, "router") && !strings.Contains(component, "registry") && !strings.Contains(component, "store-gateway") {
			return fmt.Errorf("cannot scale %s component", component)
		}
		b.Scale(component, num, &wg, outchan, errchan)
		wg.Wait()
	}
	close(outchan)
	close(errchan)
	return nil
}
Exemple #3
0
// Scale grows or shrinks the number of running components.
// Currently "router" is the only type that can be scaled.
func Scale(argv []string, b backend.Backend) error {
	usage := `Grows or shrinks the number of running components.

Currently "router" is the only type that can be scaled.

Usage:
  deisctl scale [<target>...] [options]
`
	// parse command-line arguments
	args, err := docopt.Parse(usage, argv, true, "", false)
	if err != nil {
		return err
	}
	targets := args["<target>"].([]string)

	outchan := make(chan string)
	errchan := make(chan error)
	var wg sync.WaitGroup

	go printState(outchan, errchan, 500*time.Millisecond)

	for _, target := range targets {
		component, num, err := splitScaleTarget(target)
		if err != nil {
			return err
		}
		// the router is the only component that can scale at the moment
		if !strings.Contains(component, "router") {
			return fmt.Errorf("cannot scale %s components", component)
		}
		b.Scale(component, num, &wg, outchan, errchan)
		wg.Wait()
	}
	close(outchan)
	return nil
}