/*-
* Copyright (C) 2011 Mobile Multimedia Laboratory, AUEB
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of the
* BSD license.
*
* See LICENSE and COPYING for more details.
*/
package eu.pursuit.vopsi;
import java.io.UnsupportedEncodingException;
import java.security.NoSuchAlgorithmException;
import eu.pursuit.client.BlackAdderClient;
import eu.pursuit.core.ByteIdentifier;
import eu.pursuit.core.Event;
import eu.pursuit.core.Event.EventType;
import eu.pursuit.core.ItemName;
import eu.pursuit.core.ScopeID;
public class PPChannelReceiver {
private ScopeID scope;
private ByteIdentifier rid;
private BlackAdderClient ba;
private Event event;
private ItemName receiveData;
private byte[] msg;
public PPChannelReceiver(String seed, ByteIdentifier rid,
BlackAdderClient ba) throws UnsupportedEncodingException,
NoSuchAlgorithmException {
this.rid = new ByteIdentifier(Utility.sha1(seed));
this.scope = new ScopeID();
scope.addSegment(new ByteIdentifier(Utility.sha1(rid.getId())));
this.ba = ba;
}
public PPChannelReceiver(ScopeID scope, ByteIdentifier rid,
BlackAdderClient ba) {
this.scope = scope;
this.rid = rid;
this.ba = ba;
this.receiveData = new ItemName(scope, rid);
}
public byte[] receive() {
event = ba.getNextEvent();
if (event.getType() == EventType.PUBLISHED_DATA) {
msg = event.getDataCopy();
}
event.freeNativeBuffer();
return msg;
}
}