MessageSender.java

/*
 * Copyright 2015-2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * Licensed 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 org.hawkular.inventory.bus;

import static org.hawkular.inventory.bus.Log.LOG;

import java.util.Map;

import javax.jms.ConnectionFactory;
import javax.jms.JMSException;

import org.hawkular.bus.common.ConnectionContextFactory;
import org.hawkular.bus.common.Endpoint;
import org.hawkular.bus.common.MessageId;
import org.hawkular.bus.common.MessageProcessor;
import org.hawkular.bus.common.producer.ProducerConnectionContext;
import org.hawkular.inventory.api.Interest;
import org.hawkular.inventory.api.model.Tenant;
import org.hawkular.inventory.bus.api.InventoryEvent;

/**
 * @author Lukas Krejci
 * @since 0.0.1
 */
final class MessageSender {
    private final String topicName;
    private final ConnectionFactory topicConnectionFactory;
    private final MessageProcessor messageProcessor;

    public MessageSender(ConnectionFactory topicConnectionFactory, String topicName) {
        this.topicConnectionFactory = topicConnectionFactory;
        this.topicName = topicName;

        this.messageProcessor = new MessageProcessor();
    }

    public void send(Interest<?, ?> interest, Tenant tenant, Object entity) {
        InventoryEvent<?> message = InventoryEvent.from(interest.getAction(), tenant, entity);
        Map<String, String> headers = message.createMessageHeaders();


        message.setCorrelationId(new MessageId());
        try (ConnectionContextFactory ccf = new ConnectionContextFactory(topicConnectionFactory)) {

            ProducerConnectionContext producerConnectionContext = ccf.createProducerConnectionContext(
                    new Endpoint(Endpoint.Type.TOPIC, topicName));
            messageProcessor.send(producerConnectionContext, message, headers);

            Log.LOG.tracef("Sent message %s with headers %s to %s", message, headers,
                    producerConnectionContext.getDestination());
        } catch (JMSException e) {
            LOG.failedToSendMessage(message.toString());
        }
    }
}