/**
* 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.rpc.control;
import java.util.concurrent.ConcurrentMap;
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.server.BootStrapContext;
import org.apache.drill.exec.work.batch.ControlMessageHandler;
import org.apache.drill.exec.work.fragment.FragmentManager;
import com.google.common.collect.Maps;
import com.google.common.io.Closeables;
/**
* Manages communication tunnels between nodes.
*/
public class ControllerImpl implements Controller {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(ControllerImpl.class);
private volatile ControlServer server;
private final ControlMessageHandler handler;
private final BootStrapContext context;
private final ConnectionManagerRegistry connectionRegistry;
private final boolean allowPortHunting;
public ControllerImpl(BootStrapContext context, ControlMessageHandler handler, boolean allowPortHunting) {
super();
this.handler = handler;
this.context = context;
this.connectionRegistry = new ConnectionManagerRegistry(handler, context);
this.allowPortHunting = allowPortHunting;
}
@Override
public DrillbitEndpoint start(DrillbitEndpoint partialEndpoint) throws InterruptedException, DrillbitStartupException {
server = new ControlServer(handler, context, connectionRegistry);
int port = context.getConfig().getInt(ExecConstants.INITIAL_BIT_PORT);
port = server.bind(port, allowPortHunting);
DrillbitEndpoint completeEndpoint = partialEndpoint.toBuilder().setControlPort(port).build();
connectionRegistry.setEndpoint(completeEndpoint);
return completeEndpoint;
}
@Override
public ControlTunnel getTunnel(DrillbitEndpoint endpoint) {
return new ControlTunnel(endpoint, connectionRegistry.getConnectionManager(endpoint));
}
public void close() {
Closeables.closeQuietly(server);
for (ControlConnectionManager bt : connectionRegistry) {
bt.close();
}
}
}