EventPublisherImpl.java

/*****************************************************************************
 * 
 * Copyright (C) Zenoss, Inc. 2010, all rights reserved.
 * 
 * This content is made available according to terms specified in
 * License.zenoss under the directory where your Zenoss product is installed.
 * 
 ****************************************************************************/


package org.zenoss.zep.impl;

import com.codahale.metrics.annotation.Timed;
import org.zenoss.amqp.AmqpConnectionManager;
import org.zenoss.amqp.AmqpException;
import org.zenoss.amqp.ExchangeConfiguration;
import org.zenoss.amqp.ZenossQueueConfig;
import org.zenoss.protobufs.zep.Zep.Event;
import org.zenoss.zep.EventPublisher;
import org.zenoss.zep.ZepException;

import java.io.IOException;

/**
 * Raw event publisher.
 */
public class EventPublisherImpl implements EventPublisher {

    private final ExchangeConfiguration exchangeConfiguration;
    private AmqpConnectionManager connectionManager;

    public EventPublisherImpl() throws IOException {
        this.exchangeConfiguration = ZenossQueueConfig.getConfig().getExchange("$RawZenEvents");
    }

    public void setAmqpConnectionManager(AmqpConnectionManager connectionManager) {
        this.connectionManager = connectionManager;
    }

    @Override
    @Timed
    public void publishEvent(Event rawEvent) throws ZepException {
        try {
            this.connectionManager.publish(exchangeConfiguration, createRoutingKey(rawEvent), rawEvent);
        } catch (AmqpException e) {
            throw new ZepException(e.getLocalizedMessage(), e);
        }
    }

    private static String createRoutingKey(Event rawEvent) {
        final StringBuilder sb = new StringBuilder("zenoss.zenevent");
        final String eventClass = rawEvent.getEventClass();
        if (eventClass.isEmpty()) {
            sb.append(".unknown");
        }
        else {
            sb.append(eventClass.replace('/', '.').toLowerCase());
        }
        return sb.toString();
    }
}