//内部处理
func (self *DeliverPreHandler) send0(ctx *DefaultPipelineContext, pevent *deliverPreEvent) {
//如果没有entity则直接查询一下db
entity := pevent.entity
if nil == entity {
//查询消息
entity = self.kitestore.Query(pevent.messageId)
if nil == entity {
self.kitestore.Expired(pevent.messageId)
// log.Error("DeliverPreHandler|send0|Query|FAIL|%s\n", pevent.messageId)
return
}
}
//check entity need to deliver
if !self.checkValid(entity) {
self.kitestore.Expired(entity.MessageId)
return
}
//统计数据
//对该消息类型进行统计
flow, ok := self.flowstat.TopicsFlows[pevent.header.GetTopic()]
if ok {
flow.Incr(1)
}
// log.Debug("DeliverPreHandler|send0|Query|%s", entity.Header)
data := protocol.MarshalMessage(entity.Header, entity.MsgType, entity.GetBody())
//构造deliverEvent
deliverEvent := newDeliverEvent(pevent.messageId, pevent.header.GetTopic(),
pevent.header.GetMessageType(), entity.PublishTime, pevent.attemptDeliver)
//创建不同的packet
switch entity.MsgType {
case protocol.CMD_BYTES_MESSAGE:
deliverEvent.packet = packet.NewPacket(protocol.CMD_BYTES_MESSAGE, data)
case protocol.CMD_STRING_MESSAGE:
deliverEvent.packet = packet.NewPacket(protocol.CMD_STRING_MESSAGE, data)
}
//填充订阅分组
self.fillGroupIds(deliverEvent, entity)
self.fillDeliverExt(deliverEvent, entity)
//向后投递发送
ctx.SendForward(deliverEvent)
}
func (self *KiteFileStore) Save(entity *MessageEntity) bool {
lock, link, ol := self.hash(entity.MessageId)
if len(ol) >= self.maxcap {
//overflow
return false
} else {
//value
data := protocol.MarshalMessage(entity.Header, entity.MsgType, entity.GetBody())
buff := make([]byte, len(data)+1)
buff[0] = entity.MsgType
copy(buff[1:], data)
//create oplog
ob := &opBody{
Id: -1,
MessageId: entity.MessageId,
Topic: entity.Header.GetTopic(),
Commit: entity.Commit,
FailGroups: entity.FailGroups,
SuccGroups: entity.SuccGroups,
NextDeliverTime: entity.NextDeliverTime,
DeliverCount: 0}
obd, err := json.Marshal(ob)
if nil != err {
log.ErrorLog("kite_store", "KiteFileStore|Save|Encode|Op|FAIL|%s", err)
return false
}
cmd := NewCommand(-1, entity.MessageId, buff, obd)
//append oplog into file
idchan := self.snapshot.Append(cmd)
ob.saveDone = idchan
ob.Add(1)
//get lock
lock.Lock()
//push
e := link.PushBack(ob)
ol[entity.MessageId] = e
lock.Unlock()
return true
}
}
