jstorm-core/src/main/java/com/alibaba/jstorm/daemon/worker/VirtualPortDispatch.java

/**
 * 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 com.alibaba.jstorm.daemon.worker;

import java.util.concurrent.ConcurrentHashMap;

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

import backtype.storm.messaging.IConnection;
import backtype.storm.messaging.TaskMessage;
import backtype.storm.utils.DisruptorQueue;

import com.alibaba.jstorm.metric.MetricDef;
import com.alibaba.jstorm.utils.DisruptorRunable;

//import com.alibaba.jstorm.message.zeroMq.ISendConnection;

/**
 * Message dispatcher
 * 
 * @author yannian/Longda
 * 
 */
public class VirtualPortDispatch extends DisruptorRunable {
    private final static Logger LOG = LoggerFactory.getLogger(VirtualPortDispatch.class);

    private ConcurrentHashMap<Integer, DisruptorQueue> deserializeQueues;
    private IConnection recvConnection;

    public VirtualPortDispatch(WorkerData workerData, IConnection recvConnection, DisruptorQueue recvQueue) {
        super(recvQueue, MetricDef.DISPATCH_THREAD);

        this.recvConnection = recvConnection;
        this.deserializeQueues = workerData.getDeserializeQueues();

    }

    public void shutdownRecv() {
        // don't need send shutdown command to every task
        // due to every task has been shutdown by workerData.active
        // at the same time queue has been fulll
        // byte shutdownCmd[] = { TaskStatus.SHUTDOWN };
        // for (DisruptorQueue queue : deserializeQueues.values()) {
        //
        // queue.publish(shutdownCmd);
        // }

        try {
            recvConnection.close();
        } catch (Exception e) {

        }
        recvConnection = null;
    }

    @Override
    public void shutdown() {
        super.shutdown();
        LOG.info("Begin to shutdown VirtualPortDispatch");
        shutdownRecv();
        LOG.info("Successfully shudown VirtualPortDispatch");
    }

    @Override
    public void handleEvent(Object event, boolean endOfBatch) throws Exception {
        TaskMessage message = (TaskMessage) event;

        int task = message.task();

        DisruptorQueue queue = deserializeQueues.get(task);
        if (queue == null) {
            LOG.warn("Received invalid message directed at port " + task + ". Dropping...");
            return;
        }

        queue.publish(message.message());

    }

}