Examples with TcpWriter services.moleculer.transporter.tcp.TcpWriter used on opensource projects

Example 1 with TcpWriter

use of services.moleculer.transporter.tcp.TcpWriter in project moleculer-java by moleculer-java.

the class TcpTransporter method connect.

@Override
public void connect() {
    try {
        // Create reader and writer
        disconnect();
        reader = new TcpReader(this);
        writer = new TcpWriter(this);
        // Disable offline timeout when use host list
        if (urls != null && urls.length > 0) {
            offlineTimeout = 0;
            nodes.clear();
            for (String url : urls) {
                int i = url.indexOf("://");
                if (i > -1 && i < url.length() - 4) {
                    url = url.substring(i + 3);
                }
                url = url.replace('/', ':');
                String[] parts = url.split(":");
                if (parts.length < 3) {
                    logger.warn("Invalid URL format (" + url + ")! Valid syntax is \"tcp://host:port/nodeID\" or \"host:port/nodeID\"!");
                    continue;
                }
                int port;
                try {
                    port = Integer.parseInt(parts[1]);
                } catch (Exception e) {
                    logger.warn("Invalid URL format (" + url + ")! Valid syntax is \"tcp://host:port/nodeID\" or \"host:port/nodeID\"!");
                    continue;
                }
                String sender = parts[2];
                if (sender.equals(nodeID)) {
                    // TCP server's port (port in URL list)
                    this.port = port;
                    continue;
                }
                String host = parts[0];
                nodes.put(sender, new NodeDescriptor(sender, useHostname, host, port));
            }
        } else if (offlineTimeout > 0 && offlineTimeout < 15) {
            offlineTimeout = 15;
        }
        // Process basic properties (eg. "prefix")
        heartbeatTimeout = 0;
        heartbeatInterval = 0;
        // Start TCP server
        reader.connect();
        currentPort = reader.getCurrentPort();
        // Create descriptor of current node
        Tree info = registry.getDescriptor();
        info.put("port", currentPort);
        info.put("seq", "0");
        cachedDescriptor = new NodeDescriptor(nodeID, useHostname, true, info);
        // Start data writer (TCP client)
        writer.connect();
        // TCP + UDP mode ("zero config")
        if (urls == null || urls.length == 0) {
            locator = new UDPLocator(nodeID, this, scheduler);
            locator.connect();
        }
        // Start gossiper
        gossiperTimer = scheduler.scheduleWithFixedDelay(this::sendGossipRequest, gossipPeriod, gossipPeriod, TimeUnit.SECONDS);
        // Start timeout checker's timer
        if (checkTimeoutTimer == null && offlineTimeout > 0) {
            int period = Math.max(offlineTimeout / 3, 10);
            checkTimeoutTimer = scheduler.scheduleAtFixedRate(this::checkTimeouts, period, period, TimeUnit.SECONDS);
        }
        // Ok, transporter started
        logger.info("Message receiver started on tcp://" + getHostName() + ':' + currentPort + ".");
    } catch (Exception cause) {
        String msg = cause.getMessage();
        if (msg == null || msg.isEmpty()) {
            msg = "Unable to start TCP transporter!";
        } else if (!msg.endsWith("!") && !msg.endsWith(".")) {
            msg += "!";
        }
        logger.warn(msg);
        reconnect();
    }
}