@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
out.writeVInt(nodes.length);
for (NodeStats node : nodes) {
node.writeTo(out);
}
}
private boolean handleGetOfferedKey(Message m, PeerNode source) {
Key key = (Key) m.getObject(DMT.KEY);
byte[] authenticator = ((ShortBuffer) m.getObject(DMT.OFFER_AUTHENTICATOR)).getData();
long uid = m.getLong(DMT.UID);
if (!HMAC.verifyWithSHA256(
node.failureTable.offerAuthenticatorKey, key.getFullKey(), authenticator)) {
Logger.error(
this, "Invalid offer request from " + source + " : authenticator did not verify");
try {
source.sendAsync(
DMT.createFNPGetOfferedKeyInvalid(uid, DMT.GET_OFFERED_KEY_REJECTED_BAD_AUTHENTICATOR),
null,
node.failureTable.senderCounter);
} catch (NotConnectedException e) {
// Too bad.
}
return true;
}
if (logMINOR) Logger.minor(this, "Valid GetOfferedKey for " + key + " from " + source);
// Do we want it? We can RejectOverload if we don't have the bandwidth...
boolean isSSK = key instanceof NodeSSK;
OfferReplyTag tag = new OfferReplyTag(isSSK);
node.lockUID(uid, isSSK, false, true, false, tag);
boolean needPubKey;
try {
needPubKey = m.getBoolean(DMT.NEED_PUB_KEY);
String reject = nodeStats.shouldRejectRequest(true, false, isSSK, false, true, source, false);
if (reject != null) {
Logger.normal(
this, "Rejecting FNPGetOfferedKey from " + source + " for " + key + " : " + reject);
Message rejected = DMT.createFNPRejectedOverload(uid, true);
try {
source.sendAsync(rejected, null, node.failureTable.senderCounter);
} catch (NotConnectedException e) {
Logger.normal(
this, "Rejecting (overload) data request from " + source.getPeer() + ": " + e);
}
node.unlockUID(uid, isSSK, false, false, true, false, tag);
return true;
}
} catch (Error e) {
node.unlockUID(uid, isSSK, false, false, true, false, tag);
throw e;
} catch (RuntimeException e) {
node.unlockUID(uid, isSSK, false, false, true, false, tag);
throw e;
} // Otherwise, sendOfferedKey is responsible for unlocking.
// Accept it.
try {
node.failureTable.sendOfferedKey(key, isSSK, needPubKey, uid, source, tag);
} catch (NotConnectedException e) {
// Too bad.
}
return true;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
nodes = new NodeStats[in.readVInt()];
for (int i = 0; i < nodes.length; i++) {
nodes[i] = NodeStats.readNodeStats(in);
}
}
void realRun() {
ChosenBlock req = null;
// The last time at which we sent a request or decided not to
long cycleTime = System.currentTimeMillis();
while (true) {
// Allow 5 minutes before we start killing requests due to not connecting.
OpennetManager om;
if (core.node.peers.countConnectedPeers() < 3
&& (om = core.node.getOpennet()) != null
&& System.currentTimeMillis() - om.getCreationTime() < 5 * 60 * 1000) {
try {
synchronized (this) {
wait(1000);
}
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
continue;
}
if (req == null) {
req = sched.grabRequest();
}
if (req != null) {
if (logMINOR) Logger.minor(this, "Running " + req + " priority " + req.getPriority());
if (!req.localRequestOnly) {
// Wait
long delay;
delay = throttle.getDelay();
if (logMINOR) Logger.minor(this, "Delay=" + delay + " from " + throttle);
long sleepUntil = cycleTime + delay;
if (!LOCAL_REQUESTS_COMPETE_FAIRLY) {
inputBucket.blockingGrab(
(int) (Math.max(0, averageInputBytesPerRequest.currentValue())));
outputBucket.blockingGrab(
(int) (Math.max(0, averageOutputBytesPerRequest.currentValue())));
}
long now;
do {
now = System.currentTimeMillis();
if (now < sleepUntil)
try {
Thread.sleep(sleepUntil - now);
if (logMINOR) Logger.minor(this, "Slept: " + (sleepUntil - now) + "ms");
} catch (InterruptedException e) {
// Ignore
}
} while (now < sleepUntil);
}
// if(!doAIMD) {
// // Arbitrary limit on number of local requests waiting for slots.
// // Firstly, they use threads. This could be a serious problem for faster nodes.
// // Secondly, it may help to prevent wider problems:
// // If all queues are full, the network will die.
// int[] waiting = core.node.countRequestsWaitingForSlots();
// int localRequestsWaitingForSlots = waiting[0];
// int maxWaitingForSlots = MAX_WAITING_FOR_SLOTS;
// // FIXME calibrate this by the number of local timeouts.
// // FIXME consider an AIMD, or some similar mechanism.
// // Local timeout-waiting-for-slots is largely dependant on
// // the number of requests running, due to strict round-robin,
// // so we can probably do something even simpler than an AIMD.
// // For now we'll just have a fixed number.
// // This should partially address the problem.
// // Note that while waitFor() is blocking, we need such a limit anyway.
// if(localRequestsWaitingForSlots > maxWaitingForSlots) continue;
// }
RejectReason reason;
assert (req.realTimeFlag == realTime);
if (LOCAL_REQUESTS_COMPETE_FAIRLY && !req.localRequestOnly) {
if ((reason =
stats.shouldRejectRequest(
true,
isInsert,
isSSK,
true,
false,
null,
false,
isInsert && Node.PREFER_INSERT_DEFAULT,
req.realTimeFlag,
null))
!= null) {
if (logMINOR) Logger.minor(this, "Not sending local request: " + reason);
// Wait one throttle-delay before trying again
cycleTime = System.currentTimeMillis();
continue; // Let local requests compete with all the others
}
} else {
stats.waitUntilNotOverloaded(isInsert);
}
} else {
if (logMINOR) Logger.minor(this, "Waiting...");
// Always take the lock on RequestStarter first. AFAICS we don't synchronize on
// RequestStarter anywhere else.
// Nested locks here prevent extra latency when there is a race, and therefore allow us to
// sleep indefinitely
synchronized (this) {
req = sched.grabRequest();
if (req == null) {
try {
wait(
1
* 1000); // this can happen when most but not all stuff is already running but
// there is still stuff to fetch, so don't wait *too* long.
// FIXME increase when we can be *sure* there is nothing left in the queue (especially
// for transient requests).
} catch (InterruptedException e) {
// Ignore
}
}
}
}
if (req == null) continue;
if (!startRequest(req, logMINOR)) {
// Don't log if it's a cancelled transient request.
if (!((!req.isPersistent()) && req.isCancelled()))
Logger.normal(this, "No requests to start on " + req);
}
if (!req.localRequestOnly) cycleTime = System.currentTimeMillis();
req = null;
}
}
private boolean handleInsertRequest(Message m, PeerNode source, boolean isSSK) {
ByteCounter ctr = isSSK ? node.nodeStats.sskInsertCtr : node.nodeStats.chkInsertCtr;
long id = m.getLong(DMT.UID);
if (node.recentlyCompleted(id)) {
Message rejected = DMT.createFNPRejectedLoop(id);
try {
source.sendAsync(rejected, null, ctr);
} catch (NotConnectedException e) {
Logger.normal(this, "Rejecting insert request from " + source.getPeer() + ": " + e);
}
return true;
}
InsertTag tag = new InsertTag(isSSK, InsertTag.START.REMOTE);
if (!node.lockUID(id, isSSK, true, false, false, tag)) {
if (logMINOR)
Logger.minor(this, "Could not lock ID " + id + " -> rejecting (already running)");
Message rejected = DMT.createFNPRejectedLoop(id);
try {
source.sendAsync(rejected, null, ctr);
} catch (NotConnectedException e) {
Logger.normal(this, "Rejecting insert request from " + source.getPeer() + ": " + e);
}
return true;
}
// SSKs don't fix bwlimitDelayTime so shouldn't be accepted when overloaded.
String rejectReason =
nodeStats.shouldRejectRequest(!isSSK, true, isSSK, false, false, source, false);
if (rejectReason != null) {
Logger.normal(
this,
"Rejecting insert from " + source.getPeer() + " preemptively because " + rejectReason);
Message rejected = DMT.createFNPRejectedOverload(id, true);
try {
source.sendAsync(rejected, null, ctr);
} catch (NotConnectedException e) {
Logger.normal(
this, "Rejecting (overload) insert request from " + source.getPeer() + ": " + e);
}
node.unlockUID(id, isSSK, true, false, false, false, tag);
return true;
}
boolean forkOnCacheable = Node.FORK_ON_CACHEABLE_DEFAULT;
Message forkControl = m.getSubMessage(DMT.FNPSubInsertForkControl);
if (forkControl != null)
forkOnCacheable = forkControl.getBoolean(DMT.ENABLE_INSERT_FORK_WHEN_CACHEABLE);
long now = System.currentTimeMillis();
if (m.getSpec().equals(DMT.FNPSSKInsertRequest)) {
NodeSSK key = (NodeSSK) m.getObject(DMT.FREENET_ROUTING_KEY);
byte[] data = ((ShortBuffer) m.getObject(DMT.DATA)).getData();
byte[] headers = ((ShortBuffer) m.getObject(DMT.BLOCK_HEADERS)).getData();
short htl = m.getShort(DMT.HTL);
SSKInsertHandler rh =
new SSKInsertHandler(
key,
data,
headers,
htl,
source,
id,
node,
now,
tag,
node.canWriteDatastoreInsert(htl),
forkOnCacheable);
rh.receivedBytes(m.receivedByteCount());
node.executor.execute(
rh, "SSKInsertHandler for " + id + " on " + node.getDarknetPortNumber());
} else if (m.getSpec().equals(DMT.FNPSSKInsertRequestNew)) {
NodeSSK key = (NodeSSK) m.getObject(DMT.FREENET_ROUTING_KEY);
short htl = m.getShort(DMT.HTL);
SSKInsertHandler rh =
new SSKInsertHandler(
key,
null,
null,
htl,
source,
id,
node,
now,
tag,
node.canWriteDatastoreInsert(htl),
forkOnCacheable);
rh.receivedBytes(m.receivedByteCount());
node.executor.execute(
rh, "SSKInsertHandler for " + id + " on " + node.getDarknetPortNumber());
} else {
CHKInsertHandler rh = new CHKInsertHandler(m, source, id, node, now, tag, forkOnCacheable);
node.executor.execute(
rh, "CHKInsertHandler for " + id + " on " + node.getDarknetPortNumber());
}
if (logMINOR) Logger.minor(this, "Started InsertHandler for " + id);
return true;
}
/** Handle an incoming FNPDataRequest. */
private boolean handleDataRequest(Message m, PeerNode source, boolean isSSK) {
long id = m.getLong(DMT.UID);
ByteCounter ctr = isSSK ? node.nodeStats.sskRequestCtr : node.nodeStats.chkRequestCtr;
if (node.recentlyCompleted(id)) {
Message rejected = DMT.createFNPRejectedLoop(id);
try {
source.sendAsync(rejected, null, ctr);
} catch (NotConnectedException e) {
Logger.normal(this, "Rejecting data request (loop, finished): " + e);
}
return true;
}
short htl = m.getShort(DMT.HTL);
Key key = (Key) m.getObject(DMT.FREENET_ROUTING_KEY);
final RequestTag tag = new RequestTag(isSSK, RequestTag.START.REMOTE);
if (!node.lockUID(id, isSSK, false, false, false, tag)) {
if (logMINOR)
Logger.minor(this, "Could not lock ID " + id + " -> rejecting (already running)");
Message rejected = DMT.createFNPRejectedLoop(id);
try {
source.sendAsync(rejected, null, ctr);
} catch (NotConnectedException e) {
Logger.normal(this, "Rejecting request from " + source.getPeer() + ": " + e);
}
node.failureTable.onFinalFailure(key, null, htl, htl, -1, source);
return true;
} else {
if (logMINOR) Logger.minor(this, "Locked " + id);
}
// There are at least 2 threads that call this function.
// DO NOT reuse the meta object, unless on a per-thread basis.
// Object allocation is pretty cheap in modern Java anyway...
// If we do reuse it, call reset().
BlockMetadata meta = new BlockMetadata();
KeyBlock block = node.fetch(key, false, false, false, false, meta);
String rejectReason =
nodeStats.shouldRejectRequest(
!isSSK, false, isSSK, false, false, source, block != null && !meta.isOldBlock());
if (rejectReason != null) {
// can accept 1 CHK request every so often, but not with SSKs because they aren't throttled so
// won't sort out bwlimitDelayTime, which was the whole reason for accepting them when
// overloaded...
Logger.normal(
this,
"Rejecting "
+ (isSSK ? "SSK" : "CHK")
+ " request from "
+ source.getPeer()
+ " preemptively because "
+ rejectReason);
Message rejected = DMT.createFNPRejectedOverload(id, true);
try {
source.sendAsync(rejected, null, ctr);
} catch (NotConnectedException e) {
Logger.normal(
this, "Rejecting (overload) data request from " + source.getPeer() + ": " + e);
}
tag.setRejected();
node.unlockUID(id, isSSK, false, false, false, false, tag);
// Do not tell failure table.
// Otherwise an attacker can flood us with requests very cheaply and purge our
// failure table even though we didn't accept any of them.
return true;
}
nodeStats.reportIncomingRequestLocation(key.toNormalizedDouble());
// if(!node.lockUID(id)) return false;
RequestHandler rh = new RequestHandler(m, source, id, node, htl, key, tag, block);
node.executor.execute(
rh, "RequestHandler for UID " + id + " on " + node.getDarknetPortNumber());
return true;
}
@Override
public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.field("cluster_name", getClusterName().value());
builder.startObject("nodes");
for (NodeStats nodeStats : this) {
builder.startObject(nodeStats.getNode().id(), XContentBuilder.FieldCaseConversion.NONE);
builder.field("timestamp", nodeStats.getTimestamp());
builder.field("name", nodeStats.getNode().name(), XContentBuilder.FieldCaseConversion.NONE);
builder.field("transport_address", nodeStats.getNode().address().toString());
if (nodeStats.getHostname() != null) {
builder.field(
"hostname", nodeStats.getHostname(), XContentBuilder.FieldCaseConversion.NONE);
}
if (!nodeStats.getNode().attributes().isEmpty()) {
builder.startObject("attributes");
for (Map.Entry<String, String> attr : nodeStats.getNode().attributes().entrySet()) {
builder.field(attr.getKey(), attr.getValue());
}
builder.endObject();
}
if (nodeStats.getIndices() != null) {
nodeStats.getIndices().toXContent(builder, params);
}
if (nodeStats.getOs() != null) {
nodeStats.getOs().toXContent(builder, params);
}
if (nodeStats.getProcess() != null) {
nodeStats.getProcess().toXContent(builder, params);
}
if (nodeStats.getJvm() != null) {
nodeStats.getJvm().toXContent(builder, params);
}
if (nodeStats.getThreadPool() != null) {
nodeStats.getThreadPool().toXContent(builder, params);
}
if (nodeStats.getNetwork() != null) {
nodeStats.getNetwork().toXContent(builder, params);
}
if (nodeStats.getFs() != null) {
nodeStats.getFs().toXContent(builder, params);
}
if (nodeStats.getTransport() != null) {
nodeStats.getTransport().toXContent(builder, params);
}
if (nodeStats.getHttp() != null) {
nodeStats.getHttp().toXContent(builder, params);
}
builder.endObject();
}
builder.endObject();
return builder;
}
public void requestCompleted(boolean isSSK, boolean isInsert, Key key, boolean realTime) {
getThrottleWindow(realTime).requestCompleted();
(isSSK ? throttleWindowSSK : throttleWindowCHK).requestCompleted();
(isInsert ? throttleWindowInsert : throttleWindowRequest).requestCompleted();
stats.reportOutgoingRequestLocation(key.toNormalizedDouble());
}
