//---------------------------------------------------------- p2p send from src_id to dest_id
func Send(src_id, dest_id int32, service int16, multicast bool, object interface{}) (ret bool) {
if multicast {
return _multicast(src_id, dest_id, service, object)
}
// convert the OBJECT to json, LEVEL-1 encapsulation
val, err := json.Marshal(object)
if err != nil {
log.Println("cannot marshal object to json", err)
return false
}
req := &IPCObject{SrcID: src_id, DestID: dest_id, Service: service, Object: val, Time: time.Now().Unix()}
// first try local delivery, if dest_id is not in the same server, just forward to HUB server.
peer := gsdb.QueryOnline(dest_id)
if peer != nil {
defer func() {
if x := recover(); x != nil {
ret = false
forward_tbl.Push(req)
}
}()
select {
case peer.MQ <- *req:
case <-time.After(time.Second):
panic("deadlock") // rare case, when both chan is full
}
return true
} else {
// convert req to json again, LEVEL-2 encapsulation
return hub_client.Forward(req)
}
}
//---------------------------------------------------------- 组播
// 发消息到一组**给定的**目标ID
func Multicast(ids []int32, service int16, object interface{}) (ret bool) {
// object序列化
val, err := json.Marshal(object)
if err != nil {
ERR("cannot marshal object to json", err)
return false
}
// 内容包
content := &IPCObject{
Service: service,
Object: val,
Time: time.Now().Unix(),
}
content_json, _ := json.Marshal(content)
// 封装为Multicast包
mc := &IPCObject{
AuxIDs: ids,
Service: SYS_MULTICAST,
Object: content_json,
Time: time.Now().Unix(),
}
// 投递到HUB
hub_client.Forward(mc)
// 投递到本地SYS_ROUTINE
peer := gsdb.QueryOnline(SYS_USR)
peer.MQ <- *mc
return true
}
//---------------------------------------------------------- 全服广播一条动态消息
func Broadcast(service int16, object interface{}) (ret bool) {
obj, ok := _create_broadcast_ipcobject(service, object)
if !ok {
return false
}
// 投递到HUB
hub_client.Forward(obj)
// 投递到本地SYS_ROUTINE
peer := gsdb.QueryOnline(SYS_USR)
peer.MQ <- *obj
return true
}
//---------------------------------------------------------- 异步消息发送
func Send(src_id, dest_id int32, service int16, object interface{}) (ret bool) {
// 况序列化被传输对象为json
val, err := json.Marshal(object)
if err != nil {
ERR("cannot marshal object to json", err)
return false
}
// Send函数不能投递到SYS_USR
if dest_id == SYS_USR {
ERR("cannot Send to SYS_USR")
return false
}
// 打包为IPCObject
req := &IPCObject{SrcID: src_id,
DestID: dest_id,
Service: service,
Object: val,
Time: time.Now().Unix()}
peer := gsdb.QueryOnline(dest_id)
if peer != nil { // 如果玩家在本服务器
// 对方的channel 可能会close, 需要处理panic的情况
defer func() {
if x := recover(); x != nil {
ret = false
forward_tbl.Push(req)
}
}()
select {
case peer.MQ <- *req:
case <-time.After(time.Second):
panic("deadlock") // rare case, when both chans are full.
}
return true
} else { // 通过HUB转发IPCObject
return hub_client.Forward(req)
}
return false
}