/**
* checks that we receive heartbeats and send out heart beats.
*
* @param approxTime the approximate time in milliseconds
*/
void heartBeatMonitor(long approxTime) {
for (int i = activeKeys.nextSetBit(0); i >= 0; i = activeKeys.nextSetBit(i + 1)) {
try {
final SelectionKey key = selectionKeysStore[i];
if (!key.isValid() || !key.channel().isOpen()) {
activeKeys.clear(i);
continue;
}
try {
sendHeartbeatIfRequired(approxTime, key);
} catch (Exception e) {
if (LOG.isDebugEnabled()) LOG.debug("", e);
}
try {
heartbeatCheckHasReceived(key, approxTime);
} catch (Exception e) {
if (LOG.isDebugEnabled()) LOG.debug("", e);
}
} catch (Exception e) {
if (LOG.isDebugEnabled()) LOG.debug("", e);
}
}
}
@Override
void process() throws IOException {
try {
final Details serverDetails = new Details(serverInetSocketAddress, localIdentifier);
connectorBySocket.put(serverInetSocketAddress, new ServerConnector(serverDetails));
for (InetSocketAddress client : endpoints) {
final Details clientDetails = new Details(client, localIdentifier);
connectorBySocket.put(client, new ClientConnector(clientDetails));
}
for (AbstractConnector connector : connectorBySocket.values()) {
connector.connect();
}
while (selector.isOpen()) {
registerPendingRegistrations();
final int nSelectedKeys = selector.select(selectorTimeout);
// its less resource intensive to set this less frequently and use an approximation
final long approxTime = System.currentTimeMillis();
checkThrottleInterval();
// check that we have sent and received heartbeats
heartBeatMonitor(approxTime);
// set the OP_WRITE when data is ready to send
opWriteUpdater.applyUpdates();
if (nSelectedKeys == 0) continue; // go back and check pendingRegistrations
final Set<SelectionKey> selectionKeys = selector.selectedKeys();
for (final SelectionKey key : selectionKeys) {
try {
if (!key.isValid()) continue;
if (key.isAcceptable()) onAccept(key);
if (key.isConnectable()) onConnect(key);
if (key.isReadable()) onRead(key, approxTime);
if (key.isWritable()) onWrite(key, approxTime);
} catch (CancelledKeyException e) {
quietClose(key, e);
} catch (ClosedSelectorException e) {
quietClose(key, e);
} catch (IOException e) {
quietClose(key, e);
} catch (InterruptedException e) {
quietClose(key, e);
} catch (Exception e) {
LOG.info("", e);
closeEarlyAndQuietly(key.channel());
}
}
selectionKeys.clear();
}
} catch (CancelledKeyException e) {
if (LOG.isDebugEnabled()) LOG.debug("", e);
} catch (ClosedSelectorException e) {
if (LOG.isDebugEnabled()) LOG.debug("", e);
} catch (ClosedChannelException e) {
if (LOG.isDebugEnabled()) LOG.debug("", e);
} catch (ConnectException e) {
if (LOG.isDebugEnabled()) LOG.debug("", e);
} catch (Exception e) {
LOG.error("", e);
} finally {
if (selector != null)
try {
selector.close();
} catch (IOException e) {
if (LOG.isDebugEnabled()) LOG.debug("", e);
}
close();
}
}