/**
* Creates a new default SmppServer.
*
* @param configuration The server configuration to create this server with
* @param serverHandler The handler implementation for handling bind requests and
* creating/destroying sessions.
* @param monitorExecutor The scheduled executor that all sessions will share to monitor
* themselves and expire requests. If null monitoring will be disabled.
* @param bossGroup Specify the EventLoopGroup to accept new connections and handle accepted
* connections. The {@link EventLoopGroup} is used to handle all the events and IO for {@link
* SocketChannel}.
* @param workerGroup The {@link EventLoopGroup} is used to handle all the events and IO for
* {@link Channel}.
*/
public DefaultSmppServer(
final SmppServerConfiguration configuration,
SmppServerHandler serverHandler,
ScheduledExecutorService monitorExecutor,
EventLoopGroup bossGroup,
EventLoopGroup workerGroup) {
this.configuration = configuration;
// the same group we'll put every server channel
this.channels = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
this.serverHandler = serverHandler;
// tie the server bootstrap to this server socket channel factory
this.serverBootstrap = new ServerBootstrap();
// a factory for creating channels (connections)
if (configuration.isNonBlockingSocketsEnabled()) {
this.serverBootstrap.channel(NioServerSocketChannel.class);
} else {
this.serverBootstrap.channel(OioServerSocketChannel.class);
}
this.bossGroup = bossGroup;
this.workerGroup = workerGroup;
this.serverBootstrap.group(this.bossGroup, this.workerGroup);
// set options for the server socket that are useful
this.serverBootstrap.option(ChannelOption.SO_REUSEADDR, configuration.isReuseAddress());
// we use the same default pipeline for all new channels - no need for a factory
this.serverConnector = new SmppServerConnector(channels, this);
this.serverBootstrap.childHandler(
new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ch.pipeline()
.addLast(SmppChannelConstants.PIPELINE_SERVER_CONNECTOR_NAME, serverConnector);
}
});
// a shared timer used to make sure new channels are bound within X milliseconds
this.bindTimer = new Timer(configuration.getName() + "-BindTimer0", true);
// NOTE: this would permit us to customize the "transcoding" context for a server if needed
this.transcoder = new DefaultPduTranscoder(new DefaultPduTranscoderContext());
this.sessionIdSequence = new AtomicLong(0);
this.monitorExecutor = monitorExecutor;
this.counters = new DefaultSmppServerCounters();
if (configuration.isJmxEnabled()) {
registerMBean();
}
}
protected void destroySession(Long sessionId, DefaultSmppSession session) {
// session destroyed, now pass it upstream
counters.incrementSessionDestroyedAndGet();
decrementSessionSizeCounters(session);
serverHandler.sessionDestroyed(sessionId, session);
// unregister this session as an mbean
if (configuration.isJmxEnabled()) {
session.unregisterMBean(
configuration.getJmxDomain()
+ ":type="
+ configuration.getName()
+ "Sessions,name="
+ sessionId);
}
}
private void registerMBean() {
if (configuration == null) {
return;
}
if (configuration.isJmxEnabled()) {
// register the this queue manager as an mbean
try {
ObjectName name =
new ObjectName(configuration.getJmxDomain() + ":name=" + configuration.getName());
ManagementFactory.getPlatformMBeanServer().registerMBean(this, name);
} catch (Exception e) {
// log the error, but don't throw an exception for this datasource
logger.error("Unable to register DefaultSmppServerMXBean [{}]", configuration.getName(), e);
}
}
}
protected void createSession(
Long sessionId,
Channel channel,
SmppSessionConfiguration config,
BaseBindResp preparedBindResponse)
throws SmppProcessingException {
// NOTE: exactly one PDU (bind request) was read from the channel, we
// now need to delegate permitting this bind request by calling a method
// further upstream. Only after the server-side is completely ready to
// start processing requests from this session, do we want to actually
// return the bind response and start reading further requests -- we'll
// initially block reading from the channel first -- this will be turned
// back on via the "serverReady()" method call on the session object
// make sure the channel is not being read/processed (until we flag we're ready later on)
channel.config().setAutoRead(false);
// auto negotiate the interface version in use based on the requested interface version
byte interfaceVersion = this.autoNegotiateInterfaceVersion(config.getInterfaceVersion());
// create a new server session associated with this server
DefaultSmppSession session =
new DefaultSmppSession(
SmppSession.Type.SERVER,
config,
channel,
this,
sessionId,
preparedBindResponse,
interfaceVersion,
monitorExecutor);
// replace name of thread used for renaming
SmppSessionThreadRenamer threadRenamer =
(SmppSessionThreadRenamer)
channel.pipeline().get(SmppChannelConstants.PIPELINE_SESSION_THREAD_RENAMER_NAME);
threadRenamer.setThreadName(config.getName());
// add a logging handler after the thread renamer
SmppSessionLogger loggingHandler =
new SmppSessionLogger(
DefaultSmppSession.class.getCanonicalName(), config.getLoggingOptions());
channel
.pipeline()
.addAfter(
SmppChannelConstants.PIPELINE_SESSION_THREAD_RENAMER_NAME,
SmppChannelConstants.PIPELINE_SESSION_LOGGER_NAME,
loggingHandler);
// decoder in pipeline is ok (keep it)
// create a new wrapper around a session to pass the pdu up the chain
channel.pipeline().remove(SmppChannelConstants.PIPELINE_SESSION_WRAPPER_NAME);
channel
.pipeline()
.addLast(
SmppChannelConstants.PIPELINE_SESSION_WRAPPER_NAME, new SmppSessionWrapper(session));
// check if the # of channels exceeds maxConnections
if (this.channels.size() > this.configuration.getMaxConnectionSize()) {
logger.warn(
"The current connection size [{}] exceeds the configured max connection size [{}]",
this.channels.size(),
this.configuration.getMaxConnectionSize());
}
// session created, now pass it upstream
counters.incrementSessionCreatedAndGet();
incrementSessionSizeCounters(session);
this.serverHandler.sessionCreated(sessionId, session, preparedBindResponse);
// register this session as an mbean
if (configuration.isJmxEnabled()) {
session.registerMBean(
configuration.getJmxDomain()
+ ":type="
+ configuration.getName()
+ "Sessions,name="
+ sessionId);
}
}
