brooklyn.entity.messaging.qpid.QpidBrokerImpl.java Source code

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Here is the source code for brooklyn.entity.messaging.qpid.QpidBrokerImpl.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package brooklyn.entity.messaging.qpid;

import static java.lang.String.format;

import java.io.IOException;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import brooklyn.entity.basic.Entities;
import brooklyn.entity.java.JmxSupport;
import brooklyn.entity.messaging.jms.JMSBrokerImpl;
import brooklyn.entity.proxying.EntitySpec;
import brooklyn.event.feed.jmx.JmxAttributePollConfig;
import brooklyn.event.feed.jmx.JmxFeed;
import brooklyn.event.feed.jmx.JmxHelper;
import brooklyn.util.exceptions.Exceptions;

import com.google.common.base.Function;
import com.google.common.base.Functions;
import com.google.common.base.Objects.ToStringHelper;

/**
 * An {@link brooklyn.entity.Entity} that represents a single Qpid broker instance, using AMQP 0-10.
 */
public class QpidBrokerImpl extends JMSBrokerImpl<QpidQueue, QpidTopic> implements QpidBroker {
    private static final Logger log = LoggerFactory.getLogger(QpidBrokerImpl.class);

    private volatile JmxFeed jmxFeed;

    public QpidBrokerImpl() {
        super();
    }

    public String getVirtualHost() {
        return getAttribute(VIRTUAL_HOST_NAME);
    }

    public String getAmqpVersion() {
        return getAttribute(AMQP_VERSION);
    }

    public Integer getAmqpPort() {
        return getAttribute(AMQP_PORT);
    }

    public void setBrokerUrl() {
        String urlFormat = "amqp://guest:guest@/%s?brokerlist='tcp://%s:%d'";
        setAttribute(BROKER_URL, format(urlFormat, getAttribute(VIRTUAL_HOST_NAME), getAttribute(HOSTNAME),
                getAttribute(AMQP_PORT)));
    }

    @Override
    public void init() {
        super.init();
        new JmxSupport(this, null).recommendJmxRmiCustomAgent();
    }

    public void waitForServiceUp(long duration, TimeUnit units) {
        super.waitForServiceUp(duration, units);

        // Also wait for the MBean to exist (as used when creating queue/topic)
        JmxHelper helper = new JmxHelper(this);
        try {
            String virtualHost = getConfig(QpidBroker.VIRTUAL_HOST_NAME);
            ObjectName virtualHostManager = new ObjectName(
                    format("org.apache.qpid:type=VirtualHost.VirtualHostManager,VirtualHost=\"%s\"", virtualHost));
            helper.connect();
            helper.assertMBeanExistsEventually(virtualHostManager, units.toMillis(duration));
        } catch (MalformedObjectNameException e) {
            throw Exceptions.propagate(e);
        } catch (IOException e) {
            throw Exceptions.propagate(e);
        } finally {
            if (helper != null)
                helper.terminate();
        }
    }

    public QpidQueue createQueue(Map properties) {
        QpidQueue result = addChild(EntitySpec.create(QpidQueue.class).configure(properties));
        Entities.manage(result);
        result.create();
        return result;
    }

    public QpidTopic createTopic(Map properties) {
        QpidTopic result = addChild(EntitySpec.create(QpidTopic.class).configure(properties));
        Entities.manage(result);
        result.create();
        return result;
    }

    @Override
    public Class getDriverInterface() {
        return QpidDriver.class;
    }

    @Override
    protected void connectSensors() {
        super.connectSensors();
        String serverInfoMBeanName = "org.apache.qpid:type=ServerInformation,name=ServerInformation";

        jmxFeed = JmxFeed.builder().entity(this).period(500, TimeUnit.MILLISECONDS)
                .pollAttribute(new JmxAttributePollConfig<Boolean>(SERVICE_UP).objectName(serverInfoMBeanName)
                        .attributeName("ProductVersion").onSuccess(new Function<Object, Boolean>() {
                            private boolean hasWarnedOfVersionMismatch;

                            @Override
                            public Boolean apply(Object input) {
                                if (input == null)
                                    return false;
                                if (!hasWarnedOfVersionMismatch
                                        && !getConfig(QpidBroker.SUGGESTED_VERSION).equals(input)) {
                                    log.warn("Qpid version mismatch: ProductVersion is {}, requested version is {}",
                                            input, getConfig(QpidBroker.SUGGESTED_VERSION));
                                    hasWarnedOfVersionMismatch = true;
                                }
                                return true;
                            }
                        }).onException(Functions.constant(false)))
                .build();
    }

    @Override
    public void disconnectSensors() {
        super.disconnectSensors();
        if (jmxFeed != null)
            jmxFeed.stop();
    }

    @Override
    protected ToStringHelper toStringHelper() {
        return super.toStringHelper().add("amqpPort", getAmqpPort());
    }
}