Exemple #1
0
// joins a broker to an existing cluster.
func joinBroker(b *messaging.Broker, joinURLs []*url.URL) {
	// Attempts to join each server until successful.
	for _, u := range joinURLs {
		if err := b.Join(u); err != nil {
			log.Printf("join: failed to connect to broker: %s: %s", u, err)
		} else {
			log.Printf("join: connected broker to %s", u)
			return
		}
	}
	log.Fatalf("join: failed to connect broker to any specified server")
}
Exemple #2
0
// creates and initializes a server.
func openServer(path string, u *url.URL, b *messaging.Broker, initializing, configExists bool, joinURLs []*url.URL) *influxdb.Server {
	// Ignore if there's no existing server and we're not initializing or joining.
	if !fileExists(path) && !initializing && len(joinURLs) == 0 {
		return nil
	}

	// Create and open the server.
	s := influxdb.NewServer()
	if err := s.Open(path); err != nil {
		log.Fatalf("failed to open data server: %v", err.Error())
	}

	// If the server is uninitialized then initialize or join it.
	if initializing {
		if len(joinURLs) == 0 {
			initializeServer(s, b)
		} else {
			joinServer(s, u, joinURLs)
			openServerClient(s, joinURLs)
		}
	} else if !configExists {
		// We are spining up a server that has no config,
		// but already has an initialized data directory
		joinURLs = []*url.URL{b.URL()}
		openServerClient(s, joinURLs)
	} else {
		if len(joinURLs) == 0 {
			// If a config exists, but no joinUrls are specified, fall back to the broker URL
			// TODO: Make sure we have a leader, and then spin up the server
			joinURLs = []*url.URL{b.URL()}
		}
		openServerClient(s, joinURLs)
	}

	return s
}
Exemple #3
0
// initializes a new server that does not yet have an ID.
func initializeServer(s *influxdb.Server, b *messaging.Broker) {
	// TODO: Create replica using the messaging client.

	// Create replica on broker.
	if err := b.CreateReplica(1); err != nil {
		log.Fatalf("replica creation error: %s", err)
	}

	// Create messaging client.
	c := messaging.NewClient(1)
	if err := c.Open(filepath.Join(s.Path(), messagingClientFile), []*url.URL{b.URL()}); err != nil {
		log.Fatalf("messaging client error: %s", err)
	}
	if err := s.SetClient(c); err != nil {
		log.Fatalf("set client error: %s", err)
	}

	// Initialize the server.
	if err := s.Initialize(b.URL()); err != nil {
		log.Fatalf("server initialization error: %s", err)
	}
}
Exemple #4
0
// initializes a new broker.
func initializeBroker(b *messaging.Broker) {
	if err := b.Initialize(); err != nil {
		log.Fatalf("initialize: %s", err)
	}
}