/**
* 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.work.foreman;
import java.util.Map;
import org.apache.drill.exec.proto.CoordinationProtos.DrillbitEndpoint;
import org.apache.drill.exec.rpc.RpcException;
import org.apache.drill.exec.rpc.bit.BitCom;
import org.apache.drill.exec.rpc.bit.BitTunnel;
import com.google.common.collect.Maps;
/**
* Keeps a local list of tunnels associated with a particular Foreman.
*/
public class TunnelManager {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(TunnelManager.class);
private final BitCom com;
private Map<DrillbitEndpoint, BitTunnel> tunnels = Maps.newHashMap();
public TunnelManager(BitCom com){
this.com = com;
}
public BitTunnel get(DrillbitEndpoint ep){
BitTunnel bt = tunnels.get(ep);
if(bt == null){
bt = com.getTunnel(ep);
tunnels.put(ep, bt);
}
return bt;
}
}