protected MessagingService() {
for (ReservedVerbs_ verbs : ReservedVerbs_.values()) {
reservedVerbs_.put(verbs.toString(), verbs.toString());
}
verbHandlers_ = new HashMap<String, IVerbHandler>();
endPoints_ = new HashSet<EndPoint>();
/*
* Leave callbacks in the cachetable long enough that any related messages will arrive
* before the callback is evicted from the table. The concurrency level is set at 128
* which is the sum of the threads in the pool that adds shit into the table and the
* pool that retrives the callback from here.
*/
int maxSize = MessagingConfig.getMessagingThreadCount();
callbackMap_ = new Cachetable<String, IAsyncCallback>(2 * DatabaseDescriptor.getRpcTimeout());
taskCompletionMap_ =
new Cachetable<String, IAsyncResult>(2 * DatabaseDescriptor.getRpcTimeout());
messageDeserializationExecutor_ =
new DebuggableThreadPoolExecutor(
maxSize,
maxSize,
Integer.MAX_VALUE,
TimeUnit.SECONDS,
new LinkedBlockingQueue<Runnable>(),
new ThreadFactoryImpl("MESSAGING-SERVICE-POOL"));
messageSerializerExecutor_ =
new DebuggableThreadPoolExecutor(
maxSize,
maxSize,
Integer.MAX_VALUE,
TimeUnit.SECONDS,
new LinkedBlockingQueue<Runnable>(),
new ThreadFactoryImpl("MESSAGE-SERIALIZER-POOL"));
messageDeserializerExecutor_ =
new DebuggableThreadPoolExecutor(
maxSize,
maxSize,
Integer.MAX_VALUE,
TimeUnit.SECONDS,
new LinkedBlockingQueue<Runnable>(),
new ThreadFactoryImpl("MESSAGE-DESERIALIZER-POOL"));
streamExecutor_ =
new DebuggableThreadPoolExecutor(
1,
1,
Integer.MAX_VALUE,
TimeUnit.SECONDS,
new LinkedBlockingQueue<Runnable>(),
new ThreadFactoryImpl("MESSAGE-STREAMING-POOL"));
protocol_ = hash(HashingSchemes.MD5, "FB-MESSAGING".getBytes());
/* register the response verb handler */
registerVerbHandlers(MessagingService.responseVerbHandler_, new ResponseVerbHandler());
/* register stage for response */
StageManager.registerStage(
MessagingService.responseStage_, new MultiThreadedStage("RESPONSE-STAGE", maxSize));
}
public static TcpConnectionManager getConnectionPool(EndPoint from, EndPoint to) {
String key = from + ":" + to;
TcpConnectionManager cp = poolTable_.get(key);
if (cp == null) {
lock_.lock();
try {
cp = poolTable_.get(key);
if (cp == null) {
cp =
new TcpConnectionManager(
MessagingConfig.getConnectionPoolInitialSize(),
MessagingConfig.getConnectionPoolGrowthFactor(),
MessagingConfig.getConnectionPoolMaxSize(),
from,
to);
poolTable_.put(key, cp);
}
} finally {
lock_.unlock();
}
}
return cp;
}