func responseReq(myNode *raft.RaftMachine, clHandl *Handler) {
var msg *fs.Msg
for {
select {
case commData := <-myNode.SM.CommMedium.CommitCh:
cmData := (commData).(sm.Commit)
clHandl.RLock()
conn := clHandl.ClientMap[cmData.Data.Id]
clHandl.RUnlock()
redir := strings.Fields(string(cmData.Err))
if cmData.Err != nil {
if redir[0] == "ERR_REDIRECT" {
conn = clHandl.ClientMap[redir[1]]
reply(conn, &fs.Msg{Kind: 'R', Contents: []byte(strconv.Itoa(int(cmData.Index)))})
conn.Close()
clHandl.Lock()
delete(clHandl.ClientMap, cmData.Data.Id)
clHandl.Unlock()
break
}
reply(conn, &fs.Msg{Kind: 'M'})
conn.Close()
clHandl.Lock()
delete(clHandl.ClientMap, cmData.Data.Id)
clHandl.Unlock()
break
}
data := []byte(cmData.Data.Logg)
json.Unmarshal(data, &msg)
response := fs.ProcessMsg(msg)
if !reply(conn, response) {
conn.Close()
clHandl.Lock()
delete(clHandl.ClientMap, cmData.Data.Id)
clHandl.Unlock()
break
}
case commData := <-myNode.SM.CommMedium.CommitInfoCh:
cmData := (commData).(sm.CommitInfo)
data := []byte(cmData.Data.Logg)
json.Unmarshal(data, &msg)
response := fs.ProcessMsg(msg)
_ = response
}
}
}
func serve(clientId string, myNode *raft.RaftMachine, clHandl *Handler) {
clHandl.RLock()
conn := clHandl.ClientMap[clientId]
clHandl.RUnlock()
reader := bufio.NewReader(conn)
for {
msg, msgerr, fatalerr := fs.GetMsg(reader)
if fatalerr != nil || msgerr != nil {
reply(conn, &fs.Msg{Kind: 'M'})
conn.Close()
clHandl.Lock()
delete(clHandl.ClientMap, clientId)
clHandl.Unlock()
break
}
if msgerr != nil {
if (!reply(conn, &fs.Msg{Kind: 'M'})) {
conn.Close()
clHandl.Lock()
delete(clHandl.ClientMap, clientId)
clHandl.Unlock()
break
}
}
//msg other than read send to raft cluster.
if string(msg.Kind) != "r" {
msgByt, _ := json.Marshal(msg)
raft.ClientAppend(myNode, clientId, msgByt)
} else {
//serve read request directly.
time.Sleep(1 * time.Second)
response := fs.ProcessMsg(msg)
if !reply(conn, response) {
conn.Close()
clHandl.Lock()
delete(clHandl.ClientMap, clientId)
clHandl.Unlock()
break
}
}
}
}