/
rpc.go
154 lines (142 loc) · 3.06 KB
/
rpc.go
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// Copyright © 2014 Alienero. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"errors"
"net"
"net/http"
"net/rpc"
"time"
myrpc "github.com/Alienero/quick-know/rpc"
"github.com/Alienero/quick-know/store"
"github.com/Alienero/quick-know/store/define"
"github.com/golang/glog"
)
type Comet_RPC struct {
}
func (*Comet_RPC) Relogin(id string, r *myrpc.Reply) error {
c := Users.Get(id)
if c == nil {
// r.IsRe = true
} else {
c.lock.Lock()
if !c.isLetClose {
c.isLetClose = true
c.lock.Unlock()
select {
case c.closeChan <- 1:
<-c.closeChan
r.IsOk = true
glog.Info("RPC: Ok will be relogin.")
case <-time.After(2 * time.Second):
// Timeout.
if c := Users.Get(id); c != nil {
return errors.New("Close the logon user timeout")
}
// Has been esc.
}
} else {
c.lock.Unlock()
}
}
return nil
}
func (*Comet_RPC) WriteOnlineMsg(msg *define.Msg, r *myrpc.Reply) (err error) {
defer func() {
if err == nil {
r.IsOk = true
} else {
glog.Error(err)
}
}()
glog.Info("Get a Write Online msg RPC")
c := Users.Get(msg.To_id)
if c == nil {
msg.Typ = define.OFFLINE
// Get the offline msg id
err = store.Manager.InsertOfflineMsg(msg, Conf.RPC_addr, Conf.Etcd_addr)
return
}
c.lock.Lock()
if len(c.onlines) == Conf.MaxCacheMsg {
c.lock.Unlock()
msg.Typ = define.OFFLINE
err = store.Manager.InsertOfflineMsg(msg, Conf.RPC_addr, Conf.Etcd_addr)
return
} else {
c.lock.Unlock()
}
c.lock.Lock()
if c.isStop {
c.lock.Unlock()
msg.Typ = define.OFFLINE
err = store.Manager.InsertOfflineMsg(msg, Conf.RPC_addr, Conf.Etcd_addr)
} else {
msg.Typ = define.ONLINE
c.onlines <- msg
c.lock.Unlock()
}
return
}
func (c *Comet_RPC) WriteMsg(msg *define.Msg, r *myrpc.Reply) (err error) {
msg.Dup = 0
// Fix the Expired
if msg.Expired > 0 {
msg.Expired = time.Now().UTC().Add(time.Duration(msg.Expired)).Unix()
}
// Check the user whether online.
b, addr, err := redis.IsExist(msg.To_id)
if !b {
if err != nil {
glog.Error(err)
}
// User is offline.
err = store.Manager.InsertOfflineMsg(msg, Conf.RPC_addr, Conf.Etcd_addr)
if err != nil {
glog.Error(err)
} else {
// nil error.
r.IsOk = true
}
return err
}
// User is online.
if addr == Conf.RPC_addr {
// Call local comet.
return c.WriteOnlineMsg(msg, r)
} else {
// RPC.
c, err := rpc.DialHTTP("tcp", addr)
if err != nil {
return err
}
reply := new(myrpc.Reply)
if err = c.Call("Comet_RPC.WriteOnlineMsg", msg, reply); err != nil {
return err
}
r.IsRe = reply.IsRe
r.IsOk = reply.IsOk
return nil
}
}
func (*Comet_RPC) Ping(total *int, r *myrpc.Reply) (err error) {
r.IsOk = true
l := Users.Len()
total = &l
return nil
}
func listenRPC() {
comet := new(Comet_RPC)
if err := rpc.Register(comet); err != nil {
glog.Fatal(err)
}
rpc.HandleHTTP()
l, err := net.Listen("tcp", Conf.RPC_addr)
if err != nil {
glog.Fatal(err)
}
if err = http.Serve(l, nil); err != nil {
glog.Error(err)
}
}