// This function is responsible for communicating with instance processing.
func (r *Replica) dispatch(msg message.Message) {
replicaId := msg.Replica()
instanceId := msg.Instance()
r.updateMaxInstanceNum(replicaId, instanceId)
v1Log.Infof("Replica[%v]: recv message[%s], from Replica[%v]\n",
r.Id, msg.String(), msg.Sender())
if glog.V(0) {
printDependencies(msg)
}
if instanceId <= conflictNotFound {
panic("")
}
if r.InstanceMatrix[replicaId][instanceId] == nil {
r.InstanceMatrix[replicaId][instanceId] = NewInstance(r, replicaId, instanceId)
if p, ok := msg.(*message.Propose); ok {
// send back a signal for this successfully creation
close(p.Created)
}
}
i := r.InstanceMatrix[replicaId][instanceId]
i.touch() // update last touched timestamp
v1Log.Infof("Replica[%v]: instance[%v][%v] status before = %v, ballot = [%v]\n",
r.Id, replicaId, instanceId, i.StatusString(), i.ballot.String())
v2Log.Infof("dependencies before: %v\n", i.Dependencies())
var action uint8
var rep message.Message
switch i.status {
case nilStatus:
action, rep = i.nilStatusProcess(msg)
case preAccepted:
action, rep = i.preAcceptedProcess(msg)
case accepted:
action, rep = i.acceptedProcess(msg)
case committed:
action, rep = i.committedProcess(msg)
case preparing:
action, rep = i.preparingProcess(msg)
default:
panic("")
}
v2Log.Infof("dependencies after: %v\n", i.Dependencies())
if action == noAction {
v1Log.Infof("Replica[%v]: instance[%v][%v] status after = %v, ballot = [%v]\n\n\n",
r.Id, replicaId, instanceId, i.StatusString(), i.ballot.String())
} else {
v1Log.Infof("Replica[%v]: instance[%v][%v] status after = %v, ballot = [%v]\n",
r.Id, replicaId, instanceId, i.StatusString(), i.ballot.String())
}
if r.enablePersistent {
r.StoreSingleInstance(i)
}
switch action {
case noAction:
return
case replyAction:
v1Log.Infof("Replica[%v]: send message[%s], to Replica[%v]\n\n\n",
r.Id, rep.String(), msg.Sender())
r.Transporter.Send(msg.Sender(), rep) // send back to the sender of the message
case fastQuorumAction:
v1Log.Infof("Replica[%v]: send message[%s], to FastQuorum\n\n\n",
r.Id, rep.String())
r.Transporter.MulticastFastquorum(rep)
case broadcastAction:
v1Log.Infof("Replica[%v]: send message[%s], to Everyone\n\n\n",
r.Id, rep.String())
r.Transporter.Broadcast(rep)
default:
panic("")
}
}
