}
/** {@inheritDoc} */
@Override
public void run(IRequest request, IResponse response, IResponderCallback responderCallback) throws Exception {
SCMPMessage reqMessage = request.getMessage();
String serviceName = reqMessage.getServiceName();
// check service is present
Service abstractService = this.getService(serviceName);
String subscriptionId = reqMessage.getSessionId();
Subscription subscription = this.getSubscriptionById(subscriptionId);
// enhance ipAddressList
String ipAddressList = reqMessage.getHeader(SCMPHeaderAttributeKey.IP_ADDRESS_LIST);
ipAddressList = ipAddressList + Constants.SLASH + request.getRemoteSocketAddress().getAddress().getHostAddress();
reqMessage.setHeader(SCMPHeaderAttributeKey.IP_ADDRESS_LIST, ipAddressList);
reqMessage.setHeader(SCMPHeaderAttributeKey.ACTUAL_MASK, subscription.getMask().getValue());
int oti = reqMessage.getHeaderInt(SCMPHeaderAttributeKey.OPERATION_TIMEOUT);
switch (abstractService.getType()) {
case CASCADED_PUBLISH_SERVICE:
CascadedPublishService cascadedPublishService = (CascadedPublishService) abstractService;
// publish service is cascaded
CascadedSC cascadedSC = cascadedPublishService.getCascadedSC();
ClnChangeSubscriptionCommandCallback callback = new ClnChangeSubscriptionCommandCallback(request, response,
responderCallback, subscription);
cascadedSC.cascadedSCChangeSubscription(cascadedPublishService.getCascClient(), reqMessage, callback, oti);
return;
default:
// code for other types of services is below
break;
}
ClnChangeSubscriptionCommandCallback callback = null;
StatefulServer server = (StatefulServer) subscription.getServer();
int otiOnSCMillis = (int) (oti * basicConf.getOperationTimeoutMultiplier());
int tries = (otiOnSCMillis / Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS);
// Following loop implements the wait mechanism in case of a busy connection pool
int i = 0;
do {
// reset ipList&msgType, might have been modified in below change subscription try
reqMessage.setHeader(SCMPHeaderAttributeKey.IP_ADDRESS_LIST, ipAddressList);
reqMessage.setMessageType(this.getKey());
callback = new ClnChangeSubscriptionCommandCallback(request, response, responderCallback, subscription);
try {
server.changeSubscription(reqMessage, callback, otiOnSCMillis
- (i * Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS));
// no exception has been thrown - get out of wait loop
break;
} catch (ConnectionPoolBusyException ex) {
LOGGER.debug("ConnectionPoolBusyException caught in wait mec of change subscription, tries left=" + tries);
if (i >= (tries - 1)) {
// only one loop outstanding - don't continue throw current exception
LOGGER.debug(SCMPError.NO_FREE_CONNECTION.getErrorText("service=" + reqMessage.getServiceName()));
SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.NO_FREE_CONNECTION, "service="
+ reqMessage.getServiceName());
scmpCommandException.setMessageType(this.getKey());
throw scmpCommandException;
}
} // sleep for a while and then try again
Thread.sleep(Constants.WAIT_FOR_FREE_CONNECTION_INTERVAL_MILLIS);