@Override
public HelixTaskResult handleMessage() throws InterruptedException
{
String type = _message.getMsgType();
HelixTaskResult result = new HelixTaskResult();
if (!type.equals(MessageType.SCHEDULER_MSG.toString()))
{
throw new HelixException("Unexpected msg type for message "
+ _message.getMsgId() + " type:" + _message.getMsgType());
}
// Parse timeout value
int timeOut = -1;
if (_message.getRecord().getSimpleFields().containsKey("TIMEOUT"))
{
try
{
timeOut = Integer.parseInt(_message.getRecord().getSimpleFields()
.get("TIMEOUT"));
} catch (Exception e)
{
}
}
// Parse the message template
ZNRecord record = new ZNRecord("templateMessage");
record.getSimpleFields().putAll(
_message.getRecord().getMapField("MessageTemplate"));
Message messageTemplate = new Message(record);
// Parse the criteria
StringReader sr = new StringReader(_message.getRecord().getSimpleField(
"Criteria"));
ObjectMapper mapper = new ObjectMapper();
Criteria recipientCriteria;
try
{
recipientCriteria = mapper.readValue(sr, Criteria.class);
} catch (Exception e)
{
_logger.error("", e);
result.setException(e);
result.setSuccess(false);
return result;
}
_logger.info("Scheduler sending message, criteria:" + recipientCriteria);
boolean waitAll = false;
if(_message.getRecord().getSimpleField(DefaultSchedulerMessageHandlerFactory.WAIT_ALL) !=null)
{
try
{
waitAll = Boolean.parseBoolean(_message.getRecord().getSimpleField(DefaultSchedulerMessageHandlerFactory.WAIT_ALL));
}
catch(Exception e)
{
_logger.warn("",e);
}
}
// If the target is PARTICIPANT, use the ScheduledTaskQueue
if(InstanceType.PARTICIPANT == recipientCriteria.getRecipientInstanceType())
{
handleMessageUsingScheduledTaskQueue(recipientCriteria, messageTemplate, _message.getMsgId());
result.setSuccess(true);
result.getTaskResultMap().put(SCHEDULER_MSG_ID, _message.getMsgId());
result.getTaskResultMap().put(
"ControllerResult",
"msg " + _message.getMsgId() + " from " + _message.getMsgSrc()
+ " processed");
return result;
}
_logger.info("Scheduler sending message to Controller");
int nMsgsSent = 0;
SchedulerAsyncCallback callback = new SchedulerAsyncCallback(_message, _manager);
if(waitAll)
{
nMsgsSent = _manager.getMessagingService().sendAndWait(recipientCriteria,
messageTemplate,
callback,
timeOut);
}
else
{
nMsgsSent = _manager.getMessagingService().send(recipientCriteria,
messageTemplate,
callback,
timeOut);
}
HelixDataAccessor accessor = _manager.getHelixDataAccessor();
Builder keyBuilder = accessor.keyBuilder();
// Record the number of messages sent into status updates
Map<String, String> sendSummary = new HashMap<String, String>();
sendSummary.put("MessageCount", "" + nMsgsSent);
ZNRecord statusUpdate = accessor.getProperty(
keyBuilder.controllerTaskStatus(MessageType.SCHEDULER_MSG.toString(),
_message.getMsgId())).getRecord();
statusUpdate.getMapFields().put("SentMessageCount", sendSummary);
accessor.setProperty(keyBuilder.controllerTaskStatus(
MessageType.SCHEDULER_MSG.toString(), _message.getMsgId()),
new StatusUpdate(statusUpdate));
result.getTaskResultMap().put(
"ControllerResult",
"msg " + _message.getMsgId() + " from " + _message.getMsgSrc()
+ " processed");
result.getTaskResultMap().put(SCHEDULER_MSG_ID, _message.getMsgId());
result.setSuccess(true);
return result;
}