public boolean stop() {
try {
if (scheduler != null && scheduler.isStarted()) {
// This is to immediately stop the scheduler to avoid firing new services
scheduler.standby();
if (logger.isDebugEnabled()) {
logger.debug("ShuttingDown Message Processor Scheduler : " + scheduler.getMetaData());
}
try {
scheduler.interrupt(
new JobKey(
name + "-job", MessageProcessorConstants.SCHEDULED_MESSAGE_PROCESSOR_GROUP));
} catch (UnableToInterruptJobException e) {
logger.info("Unable to interrupt job [" + name + "-job]");
}
// gracefully shutdown
scheduler.shutdown(true);
}
} catch (SchedulerException e) {
throw new SynapseException("Error ShuttingDown Message processor scheduler ", e);
}
if (logger.isDebugEnabled()) {
logger.debug("Stopped message processor [" + getName() + "].");
}
return true;
}
/**
* Check if the scheduler is started.
*
* @throws JobSchedulerException thrown if the scheduler status cannot be checked
*/
public boolean isStarted() throws JobSchedulerException {
try {
return scheduler.isStarted();
} catch (SchedulerException e) {
throw new JobSchedulerException(
"An exception occurred during checking if the scheduler is started", e);
}
}
public boolean deactivate() {
try {
if (scheduler != null && scheduler.isStarted()) {
if (logger.isDebugEnabled()) {
logger.debug("Deactivating message processor [" + getName() + "]");
}
// This is to immediately stop the scheduler to avoid firing new services
scheduler.standby();
try {
scheduler.interrupt(
new JobKey(
name + "-job", MessageProcessorConstants.SCHEDULED_MESSAGE_PROCESSOR_GROUP));
} catch (UnableToInterruptJobException e) {
logger.info("Unable to interrupt job [" + name + "-job]");
}
// This is to remove the consumer from the queue.
messageConsumer.cleanup();
if (logger.isDebugEnabled()) {
logger.debug("Successfully deactivated the message processor [" + getName() + "]");
}
setActivated(isActive());
// This means the deactivation has happened automatically. So we have to persist the
// deactivation manually.
if (isPaused()) {
try {
// TODO: Need to make sure if this is the best way.
String directory = configuration.getPathToConfigFile() + "/message-processors";
DeploymentEngine deploymentEngine =
(DeploymentEngine) configuration.getAxisConfiguration().getConfigurator();
MessageProcessorDeployer dep =
(MessageProcessorDeployer) deploymentEngine.getDeployer(directory, "xml");
dep.restoreSynapseArtifact(name);
} catch (Exception e) {
logger.warn("Couldn't persist the state of the message processor [" + name + "]");
}
}
return true;
} else {
return false;
}
} catch (SchedulerException e) {
throw new SynapseException("Error Standing-by Message processor scheduler ", e);
}
}