private Message handleDisconnectMessage(
final ChannelFactory<?> channelFactory, CommandMessage message) {
Channel client = getChannel(channelFactory, (String) message.getClientId());
if (client == null) return handleUnknownClientMessage(message);
removeChannel(client.getId(), false);
AcknowledgeMessage reply = new AcknowledgeMessage(message);
reply.setDestination(message.getDestination());
reply.setClientId(client.getId());
return reply;
}
private Message handlePingMessage(ChannelFactory<?> channelFactory, CommandMessage message) {
Channel channel = createChannel(channelFactory, (String) message.getClientId());
AsyncMessage reply = new AcknowledgeMessage(message);
reply.setClientId(channel.getId());
Map<String, Object> advice = new HashMap<String, Object>();
advice.put(RECONNECT_INTERVAL_MS_KEY, Long.valueOf(gravityConfig.getReconnectIntervalMillis()));
advice.put(RECONNECT_MAX_ATTEMPTS_KEY, Long.valueOf(gravityConfig.getReconnectMaxAttempts()));
advice.put(ENCODE_MESSAGE_BODY_KEY, Boolean.valueOf(gravityConfig.isEncodeMessageBody()));
reply.setBody(advice);
reply.setDestination(message.getDestination());
log.debug("handshake.handle: reply=%s", reply);
return reply;
}
private Message handleUnsubscribeMessage(
final ChannelFactory<?> channelFactory, CommandMessage message) {
Channel channel = getChannel(channelFactory, (String) message.getClientId());
if (channel == null) return handleUnknownClientMessage(message);
AsyncMessage reply = null;
ServiceAdapter adapter = adapterFactory.getServiceAdapter(message);
reply = (AcknowledgeMessage) adapter.manage(channel, message);
postManage(channel);
if (!(reply instanceof ErrorMessage)) {
// Remove subscription message in distributed data (clustering).
try {
DistributedData gdd = graniteConfig.getDistributedDataFactory().getInstance();
if (gdd != null) {
String subscriptionId =
(String) message.getHeader(AsyncMessage.DESTINATION_CLIENT_ID_HEADER);
log.debug(
"Removing subscription message from channel info: %s - %s",
channel.getId(), subscriptionId);
gdd.removeSubcription(channel.getId(), subscriptionId);
}
} catch (Exception e) {
log.error(
e,
"Could not remove subscription from distributed data: %s - %s",
channel.getId(),
message.getHeader(AsyncMessage.DESTINATION_CLIENT_ID_HEADER));
}
}
reply.setDestination(message.getDestination());
reply.setClientId(channel.getId());
reply.getHeaders().putAll(message.getHeaders());
return reply;
}
private Message handleSubscribeMessage(
final ChannelFactory<?> channelFactory,
final CommandMessage message,
final boolean saveMessageInSession) {
final GraniteContext context = GraniteContext.getCurrentInstance();
// Get and check destination.
final Destination destination =
context
.getServicesConfig()
.findDestinationById(message.getMessageRefType(), message.getDestination());
if (destination == null) return getInvalidDestinationError(message);
GravityInvocationContext invocationContext =
new GravityInvocationContext(message, destination) {
@Override
public Object invoke() throws Exception {
// Subscribe...
Channel channel = getChannel(channelFactory, (String) message.getClientId());
if (channel == null) return handleUnknownClientMessage(message);
String subscriptionId =
(String) message.getHeader(AsyncMessage.DESTINATION_CLIENT_ID_HEADER);
if (subscriptionId == null) {
subscriptionId = UUIDUtil.randomUUID();
message.setHeader(AsyncMessage.DESTINATION_CLIENT_ID_HEADER, subscriptionId);
}
DistributedData gdd = graniteConfig.getDistributedDataFactory().getInstance();
if (gdd != null) {
if (!gdd.hasChannelId(channel.getId())) {
gdd.addChannelId(
channel.getId(),
channel.getFactory().getClass().getName(),
context.getClientType());
log.debug("Stored channel %s in distributed data", channel.getId());
}
if (Boolean.TRUE
.toString()
.equals(destination.getProperties().get("session-selector"))) {
String selector = gdd.getDestinationSelector(destination.getId());
log.debug("Session selector found: %s", selector);
if (selector != null) message.setHeader(CommandMessage.SELECTOR_HEADER, selector);
}
}
ServiceAdapter adapter = adapterFactory.getServiceAdapter(message);
AsyncMessage reply = (AsyncMessage) adapter.manage(channel, message);
postManage(channel);
if (saveMessageInSession && !(reply instanceof ErrorMessage)) {
// Save subscription message in distributed data (clustering).
try {
if (gdd != null) {
log.debug(
"Saving new subscription message for channel: %s - %s",
channel.getId(), message);
gdd.addSubcription(channel.getId(), message);
}
} catch (Exception e) {
log.error(
e,
"Could not add subscription in distributed data: %s - %s",
channel.getId(),
subscriptionId);
}
}
reply.setDestination(message.getDestination());
reply.setClientId(channel.getId());
reply.getHeaders().putAll(message.getHeaders());
if (gdd != null && message.getDestination() != null) {
gdd.setDestinationClientId(message.getDestination(), channel.getId());
gdd.setDestinationSubscriptionId(message.getDestination(), subscriptionId);
}
return reply;
}
};
// Check security 1 (destination).
if (destination.getSecurizer() instanceof GravityDestinationSecurizer) {
try {
((GravityDestinationSecurizer) destination.getSecurizer()).canSubscribe(invocationContext);
} catch (Exception e) {
return new ErrorMessage(message, e);
}
}
// Check security 2 (security service).
GraniteConfig config = context.getGraniteConfig();
try {
if (config.hasSecurityService() && config.getSecurityService().acceptsContext())
return (Message) config.getSecurityService().authorize(invocationContext);
return (Message) invocationContext.invoke();
} catch (Exception e) {
return new ErrorMessage(message, e, true);
}
}