private void handleIOEvent(FVIOEvent e) {
if (!this.isConnected) {
try {
if (!this.sock.finishConnect()) return; // not done yet
} catch (IOException e1) {
FVLog.log(
LogLevel.DEBUG,
this,
"retrying connection in ",
this.reconnectSeconds,
" seconds; got: ",
e1);
this.reconnectLater();
return;
}
FVLog.log(LogLevel.DEBUG, this, "connected");
this.isConnected = true;
this.connectCount++;
HashMap<String, Object> info = this.getStatusInfo();
TopologyController tc = TopologyController.getRunningInstance();
if (tc != null)
tc.sliceConnectionJustChanged(info, TopologyCallback.EventType.SLICE_CONNECTED);
this.reconnectSeconds = 0;
try {
msgStream = new FVMessageAsyncStream(this.sock, new FVMessageFactory(), this, this.stats);
} catch (IOException e1) {
FVLog.log(
LogLevel.WARN,
this,
"Trying again later; while creating OFMessageAsyncStream, got: ",
e1);
this.reconnectLater();
return;
}
sendMsg(new OFHello(), this); // send initial handshake
}
try {
if (msgStream.needsFlush()) // flush any pending messages
msgStream.flush();
List<OFMessage> msgs = this.msgStream.read();
// .read(FVSlicer.MessagesPerRead); // read any new
// messages
if (msgs == null) throw new IOException("got null from read()");
for (OFMessage msg : msgs) {
FVLog.log(LogLevel.DEBUG, this, "recv from controller: ", msg);
this.stats.increment(FVStatsType.SEND, this, msg);
if ((msg instanceof SanityCheckable) && (!((SanityCheckable) msg).isSane())) {
FVLog.log(LogLevel.CRIT, this, "msg failed sanity check; dropping: " + msg);
continue;
}
if (msg instanceof Slicable) {
// mark this channel as still alive
this.keepAlive.registerPong();
if (msg.getType() != OFType.HELLO && !fvClassifier.isRateLimited(this.getSliceName())) {
FVLog.log(
LogLevel.WARN,
this,
"dropping msg because slice",
this.getSliceName(),
" is rate limited: ",
msg);
this.sendMsg(FVMessageUtil.makeErrorMsg(OFBadRequestCode.OFPBRC_EPERM, msg), this);
continue;
}
((Slicable) msg).sliceFromController(fvClassifier, this);
} else
FVLog.log(LogLevel.CRIT, this, "dropping msg that doesn't implement classify: ", msg);
}
} catch (IOException e1) {
FVLog.log(LogLevel.WARN, this, "got i/o error; tearing down and reconnecting: ", e1);
reconnect();
} catch (Exception e2) {
e2.printStackTrace();
FVLog.log(LogLevel.ALERT, this, "got unknown error; tearing down and reconnecting: ", e2);
reconnect();
}
// no need to setup for next select; done in eventloop
}
@Override
public void sliceFromController(
FVStatisticsRequest msg, FVClassifier fvClassifier, FVSlicer fvSlicer) {
FVMessageUtil.translateXidAndSend(msg, fvClassifier, fvSlicer);
}