public void executeOnTimeup() {
ConsumeQueue cq =
ScheduleMessageService.this.defaultMessageStore.findConsumeQueue(
SCHEDULE_TOPIC, delayLevel2QueueId(delayLevel));
if (cq != null) {
SelectMapedBufferResult bufferCQ = cq.getIndexBuffer(this.offset);
if (bufferCQ != null) {
try {
long nextOffset = offset;
int i = 0;
for (; i < bufferCQ.getSize(); i += ConsumeQueue.CQStoreUnitSize) {
long offsetPy = bufferCQ.getByteBuffer().getLong();
int sizePy = bufferCQ.getByteBuffer().getInt();
long tagsCode = bufferCQ.getByteBuffer().getLong();
// 队列里存储的tagsCode实际是一个时间点
long deliverTimestamp = tagsCode;
nextOffset = offset + (i / ConsumeQueue.CQStoreUnitSize);
long countdown = deliverTimestamp - System.currentTimeMillis();
// 时间到了，该投递
if (countdown <= 0) {
MessageExt msgExt =
ScheduleMessageService.this.defaultMessageStore.lookMessageByOffset(
offsetPy, sizePy);
if (msgExt != null) {
MessageExtBrokerInner msgInner = this.messageTimeup(msgExt);
PutMessageResult putMessageResult =
ScheduleMessageService.this.defaultMessageStore.putMessage(msgInner);
// 成功
if (putMessageResult != null
&& putMessageResult.getPutMessageStatus() == PutMessageStatus.PUT_OK) {
continue;
}
// 失败
else {
log.error(
"a message time up, but reput it failed, topic: {} msgId {}",
msgExt.getTopic(),
msgExt.getMsgId());
ScheduleMessageService.this.timer.schedule(
new DeliverDelayedMessageTimerTask(this.delayLevel, nextOffset),
DELAY_FOR_A_PERIOD);
ScheduleMessageService.this.updateOffset(this.delayLevel, nextOffset);
return;
}
}
}
// 时候未到，继续定时
else {
ScheduleMessageService.this.timer.schedule(
new DeliverDelayedMessageTimerTask(this.delayLevel, nextOffset), countdown);
ScheduleMessageService.this.updateOffset(this.delayLevel, nextOffset);
return;
}
} // end of for
nextOffset = offset + (i / ConsumeQueue.CQStoreUnitSize);
ScheduleMessageService.this.timer.schedule(
new DeliverDelayedMessageTimerTask(this.delayLevel, nextOffset), DELAY_FOR_A_WHILE);
ScheduleMessageService.this.updateOffset(this.delayLevel, nextOffset);
return;
} finally {
// 必须释放资源
bufferCQ.release();
}
} // end of if (bufferCQ != null)
} // end of if (cq != null)
ScheduleMessageService.this.timer.schedule(
new DeliverDelayedMessageTimerTask(this.delayLevel, this.offset), DELAY_FOR_A_WHILE);
}