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task.go
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task.go
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package task
import (
"errors"
"runtime"
"sync"
"sync/atomic"
"time"
"fmt"
"github.com/breezedup/goserver.v3/core"
"github.com/breezedup/goserver.v3/core/basic"
"github.com/breezedup/goserver.v3/core/container"
"github.com/breezedup/goserver.v3/core/container/recycler"
"github.com/breezedup/goserver.v3/core/logger"
"github.com/breezedup/goserver.v3/core/profile"
)
var taskMutexLock sync.Mutex
var taskMutexPool = make(map[string]*Task)
var ErrTaskIsRunning = errors.New("mutex task is running")
type Callable interface {
Call(*basic.Object) interface{}
}
type CompleteNotify interface {
Done(interface{}, *Task)
}
type CallableWrapper func(o *basic.Object) interface{}
func (cw CallableWrapper) Call(o *basic.Object) interface{} {
return cw(o)
}
type CompleteNotifyWrapper func(interface{}, *Task)
func (cnw CompleteNotifyWrapper) Done(i interface{}, t *Task) {
cnw(i, t)
}
type Task struct {
s *basic.Object
c Callable
n CompleteNotify
r chan interface{}
env *container.SynchronizedMap
tCreate time.Time
tStart time.Time
alertTime time.Duration
name string
refTaskCnt int32
beforeQueCnt int //入队列前,等待中的任务数量
afterQueCnt int //出队列后,等待中的任务数量
running int32 //是否正在运行
mutexFlag bool //是否互斥任务
mutexKey string //互斥任务key
}
func New(s *basic.Object, c Callable, n CompleteNotify, name ...string) *Task {
t := &Task{
s: s,
c: c,
n: n,
r: make(chan interface{}, 1),
tCreate: time.Now(),
}
if len(name) != 0 {
t.name = name[0]
}
if s == nil {
t.s = core.CoreObject()
}
return t
}
func NewMutexTask(s *basic.Object, c Callable, n CompleteNotify, key, name string) (t *Task, done bool) {
mutexKey := name + key
taskMutexLock.Lock()
if t, ok := taskMutexPool[mutexKey]; ok {
taskMutexLock.Unlock()
return t, true
}
t = New(s, c, n, name)
t.mutexKey = mutexKey
t.mutexFlag = true
taskMutexPool[mutexKey] = t
taskMutexLock.Unlock()
return t, false
}
func (t *Task) AddRefCnt(cnt int32) int32 {
return atomic.AddInt32(&t.refTaskCnt, cnt)
}
func (t *Task) GetRefCnt() int32 {
return atomic.LoadInt32(&t.refTaskCnt)
}
func (t *Task) Get() interface{} {
if t.n != nil {
panic("Task result by CompleteNotify return")
}
return <-t.r
}
func (t *Task) GetWithTimeout(timeout time.Duration) interface{} {
if timeout == 0 {
return t.Get()
} else {
timer := recycler.GetTimer(timeout)
defer recycler.GiveTimer(timer)
select {
case r, ok := <-t.r:
if ok {
return r
} else {
return nil
}
case <-timer.C:
return nil
}
}
return nil
}
func (t *Task) GetEnv(k interface{}) interface{} {
if t.env == nil {
return nil
}
return t.env.Get(k)
}
func (t *Task) PutEnv(k, v interface{}) bool {
if t.env == nil {
t.env = container.NewSynchronizedMap()
}
if t.env != nil {
t.env.Set(k, v)
}
return true
}
func (t *Task) run(o *basic.Object) (e error) {
if t.mutexFlag {
// process mutex task
if !atomic.CompareAndSwapInt32(&t.running, 0, 1) {
return ErrTaskIsRunning
}
}
watch := profile.TimeStatisticMgr.WatchStart(fmt.Sprintf("/task/%v/run", t.name), profile.TIME_ELEMENT_TASK)
defer func() {
if watch != nil {
watch.Stop()
}
if t.mutexFlag {
taskMutexLock.Lock()
delete(taskMutexPool, t.mutexKey)
taskMutexLock.Unlock()
}
if err := recover(); err != nil {
var buf [4096]byte
n := runtime.Stack(buf[:], false)
logger.Logger.Error("Task::run stack--->", string(buf[:n]))
}
}()
t.tStart = time.Now()
wait := t.tStart.Sub(t.tCreate)
ret := t.c.Call(o)
dura := t.GetRunTime()
if t.r != nil {
t.r <- ret
}
if t.n != nil {
SendTaskRes(t.s, t)
}
if t.alertTime != 0 && t.name != "" {
cost := t.GetCostTime()
if cost > t.alertTime {
logger.Logger.Warn("task [", t.name, "] since createTime(",
cost, ") since startTime(", dura, "), in quene wait(", wait, ")", " beforeQueCnt(", t.beforeQueCnt, ") afterQueCnt(", t.afterQueCnt, ")")
}
}
return nil
}
func (t *Task) Start() {
go t.run(nil)
}
func (t *Task) SetAlertTime(alertt time.Duration) {
t.alertTime = alertt
}
func (t *Task) GetCostTime() time.Duration {
return time.Now().Sub(t.tCreate)
}
func (t *Task) GetRunTime() time.Duration {
return time.Now().Sub(t.tStart)
}
func (t *Task) StartByExecutor(name string) bool {
return sendTaskReqToExecutor(t, name, "")
}
func (t *Task) StartByFixExecutor(name string) bool {
return sendTaskReqToFixExecutor(t, name, "")
}
func (t *Task) BroadcastToAllExecutor() bool {
return sendTaskReqToAllExecutor(t)
}
func (t *Task) StartByGroupExecutor(gname string, name string) bool {
return sendTaskReqToExecutor(t, name, gname)
}
func (t *Task) StartByGroupFixExecutor(name, gname string) bool {
return sendTaskReqToFixExecutor(t, name, gname)
}