delayLevel2QueueId(delayLevel));
long failScheduleOffset = offset;
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 now = System.currentTimeMillis();
long deliverTimestamp = this.correctDeliverTimestamp(now, tagsCode);
nextOffset = offset + (i / ConsumeQueue.CQStoreUnitSize);
long countdown = deliverTimestamp - now;
// 时间到了，该投递
if (countdown <= 0) {
MessageExt msgExt =
ScheduleMessageService.this.defaultMessageStore.lookMessageByOffset(
offsetPy, sizePy);
if (msgExt != null) {
try {
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 {
// XXX: warn and notify me
log.error(
"ScheduleMessageService, 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;
}
}
catch (Exception e) {
/*
* XXX: warn and notify me
* msgExt里面的内容不完整
* ，如没有REAL_QID,REAL_TOPIC之类的
* ，导致数据无法正常的投递到正确的消费队列，所以暂时先直接跳过该条消息
*/
log.error(
"ScheduleMessageService, messageTimeup execute error, drop it. msgExt="
+ msgExt + ", nextOffset=" + nextOffset + ",offsetPy="
+ offsetPy + ",sizePy=" + sizePy, e);
}
}
}
// 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)
else {
/*
* 索引文件被删除，定时任务中记录的offset已经被删除，会导致从该位置中取不到数据，