org.piax.gtrans.ov.llnet.LLNet Maven / Gradle / Ivy
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A backward compatibility package for PIAX
The newest version!
/*
* LLNet.java
*
* Copyright (c) 2012-2015 National Institute of Information and
* Communications Technology
*
* You can redistribute it and/or modify it under either the terms of
* the AGPLv3 or PIAX binary code license. See the file COPYING
* included in the PIAX package for more in detail.
*
* $Id: LLNet.java 1176 2015-05-23 05:56:40Z teranisi $
*/
package org.piax.gtrans.ov.llnet;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.piax.common.ComparableKey.SpecialKey;
import org.piax.common.Endpoint;
import org.piax.common.Location;
import org.piax.common.ObjectId;
import org.piax.common.TransportId;
import org.piax.common.subspace.GeoEllipse;
import org.piax.common.subspace.GeoRectangle;
import org.piax.common.subspace.GeoRegion;
import org.piax.common.subspace.KeyRange;
import org.piax.common.subspace.KeyRanges;
import org.piax.gtrans.FutureQueue;
import org.piax.gtrans.IdConflictException;
import org.piax.gtrans.ProtocolUnsupportedException;
import org.piax.gtrans.ReceivedMessage;
import org.piax.gtrans.RequestTransport;
import org.piax.gtrans.TransOptions;
import org.piax.gtrans.Transport;
import org.piax.gtrans.impl.NestedMessage;
import org.piax.gtrans.ov.Overlay;
import org.piax.gtrans.ov.OverlayListener;
import org.piax.gtrans.ov.OverlayReceivedMessage;
import org.piax.gtrans.ov.impl.OverlayImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
*/
public class LLNet extends OverlayImpl implements
OverlayListener, LocationId> {
/*--- logger ---*/
private static final Logger logger = LoggerFactory.getLogger(LLNet.class);
public static TransportId DEFAULT_TRANSPORT_ID = new TransportId("llnet");
final Overlay, LocationId> sg;
public LLNet(Overlay, ? super LocationId> sg)
throws IdConflictException, IOException {
this(DEFAULT_TRANSPORT_ID, sg);
}
@SuppressWarnings("unchecked")
public LLNet(TransportId transId,
Overlay, ? super LocationId> sg)
throws IdConflictException, IOException {
super(sg.getPeer(), transId, sg);
this.sg = (Overlay, LocationId>) sg;
this.sg.setListener(transId, this);
}
@Override
public synchronized void fin() {
sg.setListener(transId, null);
super.fin();
}
@Override
public Endpoint getEndpoint() {
return sg.getEndpoint();
}
@Override
public Class getAvailableKeyType() {
return Location.class;
}
@Override
public FutureQueue request(ObjectId sender, ObjectId receiver,
GeoRegion dst, Object msg, TransOptions opts)
throws ProtocolUnsupportedException, IOException {
logger.trace("ENTRY:");
logger.debug("peer:{} dst:{} msg:{}", peerId, dst, msg);
try {
GeoRectangle rect = null;
if (dst instanceof GeoRectangle) {
rect = (GeoRectangle) dst;
} else if (dst instanceof GeoEllipse) {
Rectangle2D r = ((GeoEllipse) dst).getBounds2D();
rect = new GeoRectangle(r.getX(), r.getY(), r.getWidth(),
r.getHeight());
} else {
throw new ProtocolUnsupportedException(
"LLNet only supports GeoRegion");
}
AreaId[] areaIds = AreaId.getAreaIds(rect);
List> llranges = new ArrayList>();
for (int i = 0; i < areaIds.length; i++) {
llranges.add(new KeyRange(areaIds[i].startLocId(),
areaIds[i].endLocId()));
}
NestedMessage nmsg = new NestedMessage(sender, receiver, null,
getEndpoint(), 0, dst, msg);
return sg.request(transId, new KeyRanges(llranges), nmsg, opts);
} finally {
logger.trace("EXIT:");
}
}
public void onReceive(Overlay, LocationId> trans,
OverlayReceivedMessage rmsg) {
logger.trace("ENTRY:");
Collection matchedKeys = rmsg.getMatchedKeys();
NestedMessage nmsg = (NestedMessage) rmsg.getMessage();
logger.debug("matchedKeys:{} nmsg:{}", matchedKeys, nmsg);
GeoRegion region = (GeoRegion) nmsg.option;
Set registerKeys = getKeys(nmsg.receiver);
/*
* TODO LocationIdが一致するが、元のLocationが異なるケース
* LocationIdにLocationをbindする方法がうまくいかないので妥協
*/
Set matchedLocs = new HashSet();
for (Location loc : registerKeys) {
if (region.contains(loc) && matchedKeys.contains(new LocationId(loc))) {
matchedLocs.add(loc);
}
}
// matchedKeys から locationのセットを求める
// 但し、regionに含まれ、かつ、registerKeysの要素でないといけない
// これがうまくいかない。下位の層のせいで、locがnullになる
// for (Key mk : matchedKeys) {
// Location loc = (Location) ((WrappedComparableKey) mk).option;
// if (region.contains(loc) && registerKeys.contains(loc)) {
// matchedLocs.add(loc);
// }
// }
if (matchedLocs.isEmpty()) {
// gatewayのための処理
if (nmsg.passthrough != SpecialKey.WILDCARD) {
return;
}
}
OverlayListener ovl = getListener(nmsg.receiver);
if (ovl == null) {
logger.info("onReceiveRequest data purged as no such listener");
return;
}
OverlayReceivedMessage rcvMsg = new OverlayReceivedMessage(
nmsg.sender, nmsg.src, matchedLocs, nmsg.getInner());
ovl.onReceive(this, rcvMsg);
}
@Override
public Object onReceiveRequest(
Overlay, LocationId> trans,
OverlayReceivedMessage rmsg) {
logger.trace("ENTRY:");
Collection matchedKeys = rmsg.getMatchedKeys();
NestedMessage nmsg = (NestedMessage) rmsg.getMessage();
logger.debug("matchedKeys:{} nmsg:{}", matchedKeys, nmsg);
GeoRegion region = (GeoRegion) nmsg.option;
Set registerKeys = getKeys(nmsg.receiver);
/*
* TODO LocationIdが一致するが、元のLocationが異なるケース
* LocationIdにLocationをbindする方法がうまくいかないので妥協
*/
Set matchedLocs = new HashSet();
for (Location loc : registerKeys) {
if (region.contains(loc) && matchedKeys.contains(new LocationId(loc))) {
matchedLocs.add(loc);
}
}
logger.debug("matchedLocs:{}", matchedLocs);
// matchedKeys から locationのセットを求める
// 但し、regionに含まれ、かつ、registerKeysの要素でないといけない
// これがうまくいかない。下位の層のせいで、locがnullになる
// for (Key mk : matchedKeys) {
// Location loc = (Location) ((WrappedComparableKey) mk).option;
// if (region.contains(loc) && registerKeys.contains(loc)) {
// matchedLocs.add(loc);
// }
// }
if (matchedLocs.isEmpty()) {
// gatewayのための処理
if (nmsg.passthrough != SpecialKey.WILDCARD) {
return FutureQueue.emptyQueue();
}
}
OverlayListener ovl = getListener(nmsg.receiver);
if (ovl == null) {
logger.info("onReceiveRequest data purged as no such listener");
return FutureQueue.emptyQueue();
}
OverlayReceivedMessage rcvMsg = new OverlayReceivedMessage(
nmsg.sender, nmsg.src, matchedLocs, nmsg.getInner());
return ovl.onReceiveRequest(this, rcvMsg);
}
@Override
public boolean join(Collection seeds)
throws IOException {
if (sg.isJoined()) return true;
return sg.join(seeds);
}
@Override
public boolean leave() throws IOException {
if (!sg.isJoined()) return true;
return sg.leave();
}
@Override
protected void lowerAddKey(Location key) throws IOException {
logger.debug("lower addKey:{}", key);
sg.addKey(transId, new LocationId(key));
}
@Override
protected void lowerRemoveKey(Location key) throws IOException {
logger.debug("lower removeKey:{}", key);
sg.removeKey(transId, new LocationId(key));
}
@Override
public boolean isJoined() {
return sg.isJoined();
}
@Override
public Overlay, LocationId> getLowerTransport() {
return sg;
}
//-- unnecessary but need to be defined methods by Java8
public void onReceive(Transport> trans, ReceivedMessage rmsg) {
}
public void onReceive(RequestTransport> trans,
ReceivedMessage rmsg) {
}
public FutureQueue onReceiveRequest(RequestTransport> trans,
ReceivedMessage rmsg) {
return null;
}
}