org.apache.drill.exec.service.ServiceEngine.java Source code

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Here is the source code for org.apache.drill.exec.service.ServiceEngine.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 org.apache.drill.exec.service;

import java.io.Closeable;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;

import io.netty.channel.EventLoopGroup;
import org.apache.drill.common.config.DrillConfig;
import org.apache.drill.exec.ExecConstants;
import org.apache.drill.exec.exception.DrillbitStartupException;
import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
import org.apache.drill.exec.rpc.TransportCheck;
import org.apache.drill.exec.rpc.control.Controller;
import org.apache.drill.exec.rpc.control.ControllerImpl;
import org.apache.drill.exec.rpc.control.WorkEventBus;
import org.apache.drill.exec.rpc.data.DataConnectionCreator;
import org.apache.drill.exec.rpc.data.DataResponseHandler;
import org.apache.drill.exec.rpc.user.UserServer;
import org.apache.drill.exec.server.BootStrapContext;
import org.apache.drill.exec.work.batch.ControlMessageHandler;
import org.apache.drill.exec.work.user.UserWorker;

import com.google.common.io.Closeables;

public class ServiceEngine implements Closeable {
    static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ServiceEngine.class);

    private final UserServer userServer;
    private final Controller controller;
    private final DataConnectionCreator dataPool;
    private final DrillConfig config;
    boolean useIP = false;
    private final boolean allowPortHunting;

    public ServiceEngine(ControlMessageHandler controlMessageHandler, UserWorker userWorker,
            BootStrapContext context, WorkEventBus workBus, DataResponseHandler dataHandler,
            boolean allowPortHunting) throws DrillbitStartupException {
        final EventLoopGroup eventLoopGroup = TransportCheck.createEventLoopGroup(
                context.getConfig().getInt(ExecConstants.USER_SERVER_RPC_THREADS), "UserServer-");
        this.userServer = new UserServer(context.getConfig(), context.getAllocator(), eventLoopGroup, userWorker);
        this.controller = new ControllerImpl(context, controlMessageHandler, allowPortHunting);
        this.dataPool = new DataConnectionCreator(context, workBus, dataHandler, allowPortHunting);
        this.config = context.getConfig();
        this.allowPortHunting = allowPortHunting;
    }

    public DrillbitEndpoint start() throws DrillbitStartupException, UnknownHostException {
        int userPort = userServer.bind(config.getInt(ExecConstants.INITIAL_USER_PORT), allowPortHunting);
        String address = useIP ? InetAddress.getLocalHost().getHostAddress()
                : InetAddress.getLocalHost().getCanonicalHostName();
        DrillbitEndpoint partialEndpoint = DrillbitEndpoint.newBuilder().setAddress(address)
                //.setAddress("localhost")
                .setUserPort(userPort).build();

        partialEndpoint = controller.start(partialEndpoint);
        return dataPool.start(partialEndpoint);
    }

    public DataConnectionCreator getDataConnectionCreator() {
        return dataPool;
    }

    public Controller getController() {
        return controller;
    }

    @Override
    public void close() throws IOException {
        Closeables.closeQuietly(userServer);
        Closeables.closeQuietly(dataPool);
        Closeables.closeQuietly(controller);
    }
}