SpawnMQ.java example

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hydra-master
/*
 * 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 com.addthis.hydra.job.spawn;

import com.addthis.hydra.job.mq.CoreMessage;
import com.addthis.hydra.mq.MessageListener;


/**
 * interface for Spawn messaging
 */
public interface SpawnMQ extends MessageListener<CoreMessage> {

    /**
     * connect to messaging infrastructure
     *
     * @param hostUUID - the host being connected
     * @throws Exception - thrown if there is an error connecting to MQ
     */
    void connectToMQ(String hostUUID) throws Exception;

    /**
     * Called when a message is received
     *
     * @param message - the incoming message
     */
    @Override
    void onMessage(CoreMessage message);

    /**
     * Send a message to the control channel
     *
     * @param msg - the message to send
     */
    void sendControlMessage(CoreMessage msg);

    /**
     * Send a message to the job channel
     *
     * @param msg - the message to send
     */
    void sendJobMessage(CoreMessage msg);

    void closeProducers();

    void closeConsumers();
}