com.microsoft.azure.servicebus.amqp.ConnectionHandler Maven / Gradle / Ivy

Go to download
/*
 * Copyright (c) Microsoft. All rights reserved.
 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
 */
package com.microsoft.azure.servicebus.amqp;

import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.apache.qpid.proton.Proton;
import org.apache.qpid.proton.amqp.Symbol;
import org.apache.qpid.proton.amqp.transport.ErrorCondition;

import org.apache.qpid.proton.engine.BaseHandler;
import org.apache.qpid.proton.engine.Connection;
import org.apache.qpid.proton.engine.EndpointState;
import org.apache.qpid.proton.engine.Event;
import org.apache.qpid.proton.engine.Sasl;
import org.apache.qpid.proton.engine.SslDomain;
import org.apache.qpid.proton.engine.Transport;
import org.apache.qpid.proton.reactor.Handshaker;

import com.microsoft.azure.servicebus.ClientConstants;
import com.microsoft.azure.servicebus.StringUtil;

// ServiceBus <-> ProtonReactor interaction handles all
// amqp_connection/transport related events from reactor
public final class ConnectionHandler extends BaseHandler {

    private static final Logger TRACE_LOGGER = Logger.getLogger(ClientConstants.SERVICEBUS_CLIENT_TRACE);

    private final IAmqpConnection messagingFactory;

    public ConnectionHandler(final IAmqpConnection messagingFactory) {

        add(new Handshaker());
        this.messagingFactory = messagingFactory;
    }

    @Override
    public void onConnectionInit(Event event) {

        final Connection connection = event.getConnection();
        final String hostName = event.getReactor().getConnectionAddress(connection);

        connection.setHostname(hostName);
        connection.setContainer(StringUtil.getRandomString());

        final Map connectionProperties = new HashMap();
        connectionProperties.put(AmqpConstants.PRODUCT, ClientConstants.PRODUCT_NAME);
        connectionProperties.put(AmqpConstants.VERSION, ClientConstants.CURRENT_JAVACLIENT_VERSION);
        connectionProperties.put(AmqpConstants.PLATFORM, ClientConstants.PLATFORM_INFO);
        connectionProperties.put(AmqpConstants.FRAMEWORK, ClientConstants.FRAMEWORK_INFO);
        connection.setProperties(connectionProperties);

        connection.open();
    }

    @Override
    public void onConnectionBound(Event event) {

        final Transport transport = event.getTransport();

        final SslDomain domain = makeDomain(SslDomain.Mode.CLIENT);
        transport.ssl(domain);

        Sasl sasl = transport.sasl();
        sasl.setMechanisms("ANONYMOUS");
    }

    @Override
    public void onConnectionUnbound(Event event) {

        final Connection connection = event.getConnection();
        if (TRACE_LOGGER.isLoggable(Level.FINE)) {
            TRACE_LOGGER.log(Level.FINE,
                    "Connection.onConnectionUnbound: hostname[" + connection.getHostname() + "], state[" + connection.getLocalState() + "], remoteState[" + connection.getRemoteState() + "]");
        }

        // if failure happened while establishing transport - nothing to free up.
        if (connection.getRemoteState() != EndpointState.UNINITIALIZED)
            connection.free();
    }

    @Override
    public void onTransportError(Event event) {

        final Connection connection = event.getConnection();
        final Transport transport = event.getTransport();
        final ErrorCondition condition = transport.getCondition();

        if (condition != null) {
            if (TRACE_LOGGER.isLoggable(Level.WARNING)) {
                TRACE_LOGGER.log(Level.WARNING, "Connection.onTransportError: hostname[" + connection.getHostname() + "], error[" + condition.getDescription() + "]");
            }
        } else {
            if (TRACE_LOGGER.isLoggable(Level.WARNING)) {
                TRACE_LOGGER.log(Level.WARNING, "Connection.onTransportError: hostname[" + connection != null ? connection.getHostname() : "n/a" + "], error[no description returned]");
            }
        }

        this.messagingFactory.onConnectionError(condition);
        transport.unbind();
    }

    @Override
    public void onConnectionRemoteOpen(Event event) {

        if (TRACE_LOGGER.isLoggable(Level.FINE)) {
            TRACE_LOGGER.log(Level.FINE, "Connection.onConnectionRemoteOpen: hostname[" + event.getConnection().getHostname() + ", " + event.getConnection().getRemoteContainer() + "]");
        }

        this.messagingFactory.onOpenComplete(null);
    }

    @Override
    public void onConnectionLocalClose(Event event) {

        final Connection connection = event.getConnection();

        final ErrorCondition error = connection.getCondition();
        if (TRACE_LOGGER.isLoggable(Level.FINE)) {
            TRACE_LOGGER.log(Level.FINE, "hostname[" + connection.getHostname() +
                    (error != null
                            ? "], errorCondition[" + error.getCondition() + ", " + error.getDescription() + "]"
                            : "]"));
        }

        if (connection.getRemoteState() == EndpointState.CLOSED) {
            // This means that the CLOSE origin is Service
            final Transport transport = connection.getTransport();
            if (transport != null) {
                transport.unbind();
            }
        }
    }

    @Override
    public void onConnectionRemoteClose(Event event) {

        final Connection connection = event.getConnection();
        final ErrorCondition error = connection.getRemoteCondition();

        if (TRACE_LOGGER.isLoggable(Level.FINE)) {
            TRACE_LOGGER.log(Level.FINE, "hostname[" + connection.getHostname() +
                    (error != null
                            ? "], errorCondition[" + error.getCondition() + ", " + error.getDescription() + "]"
                            : "]"));
        }

        this.messagingFactory.onConnectionError(error);
    }

    private static SslDomain makeDomain(SslDomain.Mode mode) {

        final SslDomain domain = Proton.sslDomain();
        domain.init(mode);

        // TODO: VERIFY_PEER_NAME support
        domain.setPeerAuthentication(SslDomain.VerifyMode.ANONYMOUS_PEER);
        return domain;
    }
}