/
actor.go
409 lines (339 loc) · 8.5 KB
/
actor.go
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package cherryActor
import (
"strings"
"time"
cutils "github.com/cherry-game/cherry/extend/utils"
cfacade "github.com/cherry-game/cherry/facade"
clog "github.com/cherry-game/cherry/logger"
"go.uber.org/zap/zapcore"
)
/**
- 每个Actor独立运行在一个goroutine中,所有的逻辑都是串行处理
- Actor接收三种消息:本地消息(Local)、远程消息(Remote)、事件消息(Event)
- 三种消息都有自己的队列(Queue),每个队列依据FIFO原则进行消费
- 本地消息(Local),用于接收游戏客户端发送过来的本地消息
- 远程消息(Remote),用于Actor之间调用的远程消息
- 事件消息(Event),通过订阅/发布进行的事件消息
- Actor可以创建多个子Actor(ChildActor),子Actor的消息由父Actor进行路由转发
- Actor可以创建多个定时器(Timer)进行定时业务的处理
- 通过cluster集群组件、discovery发现服务组件,进行跨节点的actor通信
*/
var (
_nilActor = Actor{}
)
var (
InitState State = 0
WorkerState State = 1
FreeState State = 2
StopState State = 3
)
type (
State int
Actor struct {
system *System // actor system
path *cfacade.ActorPath // actor path
state State // actor state
close chan struct{} // close flag
handler cfacade.IActorHandler // actor handler
localMail *mailbox // local message mailbox
remoteMail *mailbox // remote message mailbox
event *actorEvent // event
child *actorChild // child actor
timer *actorTimer // timer
lastAt int64 // last process time
arrivalElapsed int64 // arrival elapsed for message
executionElapsed int64 // execution elapsed for message
}
)
func (p *Actor) run() {
p.onInit()
defer p.onStop()
for {
if p.loop() {
break
}
}
}
func (p *Actor) loop() bool {
if p.state == StopState {
if p.localMail.Count() < 1 &&
p.remoteMail.Count() < 1 &&
p.event.Count() < 1 {
return true
}
}
select {
case <-p.localMail.C:
{
p.processLocal()
}
case <-p.remoteMail.C:
{
p.processRemote()
}
case <-p.event.C:
{
p.processEvent()
}
case <-p.close:
{
p.state = StopState
}
}
return false
}
func (p *Actor) processLocal() {
m := p.localMail.Pop()
if m == nil {
return
}
p.lastAt = time.Now().Unix()
next, invoke := p.handler.OnLocalReceived(m)
if invoke {
p.invokeFunc(p.localMail, p.App(), p.system.localInvokeFunc, m)
}
if !next {
return
}
if m.TargetPath().IsChild() {
if p.path.IsChild() {
p.invokeFunc(p.localMail, p.App(), p.system.localInvokeFunc, m)
} else {
if childActor, foundChild := p.findChildActor(m); foundChild {
childActor.PostLocal(m)
} else {
clog.Warnf("Child actor not found. path = %s", m.Target)
}
}
} else {
p.invokeFunc(p.localMail, p.App(), p.system.localInvokeFunc, m)
}
}
func (p *Actor) processRemote() {
m := p.remoteMail.Pop()
if m == nil {
return
}
p.lastAt = time.Now().Unix()
next, invoke := p.handler.OnRemoteReceived(m)
if invoke {
p.invokeFunc(p.remoteMail, p.App(), p.system.remoteInvokeFunc, m)
}
if !next {
return
}
if m.TargetPath().IsChild() {
if p.path.IsChild() {
p.invokeFunc(p.remoteMail, p.App(), p.system.remoteInvokeFunc, m)
} else {
if childActor, foundChild := p.findChildActor(m); foundChild {
childActor.PostRemote(m)
} else {
clog.Warnf("Child actor not found. path = %s", m.Target)
}
}
} else {
p.invokeFunc(p.remoteMail, p.App(), p.system.remoteInvokeFunc, m)
}
}
func (p *Actor) processEvent() {
eventData := p.event.Pop()
if eventData == nil {
return
}
p.lastAt = time.Now().Unix()
p.event.funcInvoke(eventData)
}
func (p *Actor) invokeFunc(mb *mailbox, app cfacade.IApplication, fn cfacade.InvokeFunc, m *cfacade.Message) {
funcInfo, found := mb.funcMap[m.FuncName]
if !found {
clog.Warnf("[%s] Function not found. [source = %s, target = %s -> %s]",
mb.name,
m.Source,
m.Target,
m.FuncName,
)
m.Recycle()
return
}
p.arrivalElapsed = m.PostTime - m.BuildTime
if p.arrivalElapsed > p.system.arrivalTimeOut {
clog.Warnf("[%s] Invoke timeout.[path = %s -> %s -> %s, postTime = %d, buildTime = %d, arrival = %dms]",
mb.name,
m.Source,
m.Target,
m.FuncName,
m.PostTime,
m.BuildTime,
p.arrivalElapsed,
)
}
now := time.Now().UnixMilli()
defer func() {
p.executionElapsed = time.Now().UnixMilli() - now
if p.executionElapsed > p.system.executionTimeout {
clog.Warnf("[%s] Invoke timeout.[source = %s, target = %s->%s, execution = %dms]",
mb.name,
m.Source,
m.Target,
m.FuncName,
p.executionElapsed,
)
}
if rev := recover(); rev != nil {
clog.Errorf("[%s] Invoke error. [source = %s, target = %s->%s, type = %v]",
mb.name,
m.Source,
m.Target,
m.FuncName,
funcInfo.InArgs,
)
}
m.Recycle()
}()
fn(app, funcInfo, m)
}
func (p *Actor) findChildActor(m *cfacade.Message) (*Actor, bool) {
// 如果当前actor为子actor,则终止本次消息处理
if p.path.IsChild() {
clog.Warnf("[findChildActor] Child actor cannot be created again。",
m.Target,
m.FuncName,
)
return nil, false
}
// 寻找childActor
childActor, found := p.child.Get(m.TargetPath().ChildID)
if !found {
childActor, found = p.handler.OnFindChild(m)
}
if found {
if cActor, ok := childActor.(*Actor); ok {
return cActor, true
}
}
return nil, false
}
func (p *Actor) onInit() {
p.state = WorkerState
p.handler.OnInit()
}
func (p *Actor) onStop() {
cutils.Try(func() {
close(p.close)
if p.path.IsParent() {
p.system.removeActor(p.ActorID())
p.child.onStop()
} else {
if parent, found := p.system.GetActor(p.path.ActorID); found {
parent.child.Remove(p.path.ChildID)
}
}
p.handler.OnStop()
p.timer.onStop()
p.event.onStop()
p.localMail.onStop()
p.remoteMail.onStop()
}, func(errString string) {
clog.Error(errString)
})
p.system.wg.Done()
}
func (p *Actor) State() State {
return p.state
}
func (p *Actor) App() cfacade.IApplication {
return p.system.app
}
func (p *Actor) ActorID() string {
if p.path.IsChild() {
return p.path.ChildID
}
return p.path.ActorID
}
func (p *Actor) Path() *cfacade.ActorPath {
return p.path
}
func (p *Actor) PathString() string {
return p.path.String()
}
func (p *Actor) Call(targetPath, funcName string, arg interface{}) int32 {
return p.system.Call(p.path.String(), targetPath, funcName, arg)
}
func (p *Actor) CallWait(targetPath, funcName string, arg interface{}, reply interface{}) int32 {
return p.system.CallWait(p.path.String(), targetPath, funcName, arg, reply)
}
// LastAt second
func (p *Actor) LastAt() int64 {
return p.lastAt
}
func (p *Actor) Exit() {
p.close <- struct{}{}
if clog.PrintLevel(zapcore.DebugLevel) {
clog.Debugf("[Exit] actor exit! path = %s", p.path)
}
}
func (p *Actor) System() *System {
return p.system
}
func (p *Actor) Local() IMailBox {
return p.localMail
}
func (p *Actor) Remote() IMailBox {
return p.remoteMail
}
func (p *Actor) Event() IEvent {
return p.event
}
func (p *Actor) Child() cfacade.IActorChild {
return p.child
}
func (p *Actor) Timer() ITimer {
return p.timer
}
func (p *Actor) PostRemote(m *cfacade.Message) {
p.remoteMail.Push(m)
}
func (p *Actor) PostLocal(m *cfacade.Message) {
p.localMail.Push(m)
}
func (p *Actor) PostEvent(data cfacade.IEventData) {
p.system.PostEvent(data)
}
func newActor(actorID, childID string, handler cfacade.IActorHandler, c *System) (Actor, error) {
if strings.TrimSpace(actorID) == "" {
clog.Error("[newActor] actor id is nil.")
return _nilActor, ErrActorIDIsNil
}
thisActor := Actor{
path: &cfacade.ActorPath{
NodeID: c.NodeId(),
ActorID: actorID,
ChildID: childID,
},
state: InitState,
system: c,
close: make(chan struct{}, 1),
handler: handler,
lastAt: time.Now().Unix(),
}
localMailbox := newMailbox(LocalName)
thisActor.localMail = &localMailbox
remoteMailbox := newMailbox(RemoteName)
thisActor.remoteMail = &remoteMailbox
event := newEvent(&thisActor)
thisActor.event = &event
child := newChild(&thisActor)
thisActor.child = &child
timer := newTimer(&thisActor)
thisActor.timer = &timer
// register update timer func
thisActor.remoteMail.Register(updateTimerFuncName, thisActor.timer._updateTimer_)
// spawn load!
actorLoad, ok := handler.(IActorLoader)
if ok {
actorLoad.load(thisActor)
}
c.wg.Add(1)
return thisActor, nil
}