/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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 eu.stratosphere.runtime.io.network;
import java.net.InetAddress;
import eu.stratosphere.runtime.io.channels.ChannelID;
import eu.stratosphere.runtime.io.network.ConnectionInfoLookupResponse;
import eu.stratosphere.runtime.io.network.RemoteReceiver;
/**
* A transfer envelope receiver list contains all recipients of a transfer envelope. Their are three different types of
* receivers: Local receivers identified by {@link ChannelID} objects, remote receivers identified by
* {@link InetAddress} objects and finally checkpoints which are identified by
* <p>
* This class is thread-safe.
*
*/
public class EnvelopeReceiverList {
private final ChannelID localReceiver;
private final RemoteReceiver remoteReceiver;
public EnvelopeReceiverList(ConnectionInfoLookupResponse cilr) {
this.localReceiver = cilr.getLocalTarget();
this.remoteReceiver = cilr.getRemoteTarget();
}
public EnvelopeReceiverList(ChannelID localReceiver) {
this.localReceiver = localReceiver;
this.remoteReceiver = null;
}
public EnvelopeReceiverList(RemoteReceiver remoteReceiver) {
this.localReceiver = null;
this.remoteReceiver = remoteReceiver;
}
public boolean hasLocalReceiver() {
return this.localReceiver != null;
}
public boolean hasRemoteReceiver() {
return this.remoteReceiver != null;
}
public int getTotalNumberOfReceivers() {
return (this.localReceiver == null ? 0 : 1) + (this.remoteReceiver == null ? 0 : 1);
}
public RemoteReceiver getRemoteReceiver() {
return this.remoteReceiver;
}
public ChannelID getLocalReceiver() {
return this.localReceiver;
}
@Override
public String toString() {
return "local receiver: " + this.localReceiver + ", remote receiver: " + this.remoteReceiver;
}
}