public synchronized void addSession(Session session) {
MemcachedSession tcpSession = (MemcachedSession) session;
InetSocketAddressWrapper addrWrapper = tcpSession.getInetSocketAddressWrapper();
InetSocketAddress mainNodeAddress = addrWrapper.getMainNodeAddress();
if (mainNodeAddress != null) {
// It is a standby session
this.addStandbySession(session, mainNodeAddress);
} else {
// It is a main session
this.addMainSession(session);
// Update main sessions
this.updateSessions();
}
}
private void addMainSession(Session session) {
InetSocketAddress remoteSocketAddress = session.getRemoteSocketAddress();
log.warn(
"Add a session: "
+ SystemUtils.getRawAddress(remoteSocketAddress)
+ ":"
+ remoteSocketAddress.getPort());
Queue<Session> sessions = this.sessionMap.get(remoteSocketAddress);
if (sessions == null) {
sessions = new ConcurrentLinkedQueue<Session>();
Queue<Session> oldSessions = this.sessionMap.putIfAbsent(remoteSocketAddress, sessions);
if (null != oldSessions) {
sessions = oldSessions;
}
}
// If it is in failure mode,remove closed session from list
if (this.failureMode) {
Iterator<Session> it = sessions.iterator();
while (it.hasNext()) {
Session tmp = it.next();
if (tmp.isClosed()) {
it.remove();
break;
}
}
}
sessions.offer(session);
// Remove old session and close it
while (sessions.size() > this.connectionPoolSize) {
Session oldSession = sessions.poll();
((MemcachedSession) oldSession).setAllowReconnect(false);
oldSession.close();
}
}
private MemcachedSession findStandbySession(MemcachedSession session) {
if (this.failureMode) {
List<Session> sessionList =
this.getStandbySessionListByMainNodeAddr(session.getRemoteSocketAddress());
if (sessionList != null && !sessionList.isEmpty()) {
return (MemcachedTCPSession) sessionList.get(this.random.nextInt(sessionList.size()));
}
}
return session;
}
public synchronized void quitAllSessions() {
for (Session session : this.sessionSet) {
((MemcachedSession) session).quit();
}
int sleepCount = 0;
while (sleepCount++ < 5 && this.sessionSet.size() > 0) {
try {
this.wait(1000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
public void send(final Command msg) throws MemcachedException {
MemcachedSession session = (MemcachedSession) this.findSessionByKey(msg.getKey());
if (session == null) {
throw new MemcachedException("There is no available connection at this moment");
}
// If session was closed,try to use standby memcached node
if (session.isClosed()) {
session = this.findStandbySession(session);
}
if (session.isClosed()) {
throw new MemcachedException(
"Session("
+ SystemUtils.getRawAddress(session.getRemoteSocketAddress())
+ ":"
+ session.getRemoteSocketAddress().getPort()
+ ") has been closed");
}
if (session.isAuthFailed()) {
throw new MemcachedException("Auth failed to connection " + session.getRemoteSocketAddress());
}
session.write(msg);
}
public void setBufferAllocator(BufferAllocator allocator) {
this.bufferAllocator = allocator;
for (Session session : this.getSessionSet()) {
((MemcachedSession) session).setBufferAllocator(allocator);
}
}
