Java 类com.rabbitmq.client.impl.AMQConnection 实例源码

@Override
public String toString() {
    return "{" +
            "channelType=" + channelType +
            ", channelNo=" + delegate.getChannelNumber() +
            ", localPort=" + ((AMQConnection) delegate.getConnection()).getLocalPort() +
            '}';
}

private synchronized Connection createConnection(ChannelType connectionType) throws ConnectionFailureException {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    Date startTime = new Date();
    sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
    settings.getClient_properties().put("connection_type", connectionType.toString());
    settings.getClient_properties().put("connect_time", sdf.format(startTime)+"Z");

    ConnectionFactory cf = new ConnectionFactory();
    cf.setRequestedHeartbeat(settings.getHeartbeat());
    cf.setConnectionTimeout(settings.getConnection_timeout_millis());
    cf.setShutdownTimeout(settings.getShutdown_timeout_millis());
    cf.setRequestedFrameMax(settings.getFrame_max());
    cf.setHandshakeTimeout(settings.getHandshake_timeout_millis());
    cf.setClientProperties((Map)settings.getClient_properties());
    //cf.setSocketConfigurator(); NOTE is this worth investigating??
    cf.setRequestedChannelMax(0);//Hard coded ..
    cf.setAutomaticRecoveryEnabled(false);//Hard coded ..
    cf.setTopologyRecoveryEnabled(false);//Hard coded ..

    Exception lastException = null;
    Connection connection = null;
    for (BrokerAddresses.BrokerAddress address : addresses) {
        cf.setPassword(address.password);
        cf.setUsername(address.username);
        cf.setPort(address.port);
        cf.setHost(address.host);
        cf.setVirtualHost(address.virtualHost);
        try {
            if(address.scheme.toLowerCase().equals("amqps")){
                cf.useSslProtocol();
                cf.setSocketFactory(SSLSocketFactory.getDefault()); //Because rabbit uses NoopTrustStore by default...
            }
            log.infoWithParams("Creating "+connectionType+" connection to broker ...",
                    "address", address.toString(),
                    "settings", settings.toString());
            connection = cf.newConnection();
            boolean isOpen = connection.isOpen();
            if(!isOpen){
                continue;
            }
            break;
        } catch (Exception e) {
            log.debugWithParams("Failed to createConnection to broker",
                    "address", address.toString());
            lastException = e;
        }
    }

    if(connection == null){
        throw new ConnectionFailureException(cf, lastException);
    }

    conToChannel.put(connectionType,
            new ConnectionInfo(
                    connection,
                    new ArrayList<ChannelImpl>(),
                    settings.getClient_properties(),
                    connectionType)
    );
    log.infoWithParams("Successfully created "+connectionType+" connection to broker.",
            "address", addresses.get(0).toString(),
            "localPort", ((AMQConnection) connection).getLocalPort(),
            "settings", settings.toString());

    return connection;

}