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runnable.go
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runnable.go
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package framework
import "errors"
type RoutineController interface {
SetStopping()
IsStopping() bool
GetNotifyChannel() chan bool
NotifyExit()
}
type SimpleRunner struct {
notifyChan chan bool
exitChan chan bool
exitFlag bool
routine func(RoutineController)
isRunning bool
}
func CreateSimpleRunner (r func(RoutineController)) (runner *SimpleRunner){
var notifyChan = make(chan bool, 1)
var exitChan = make(chan bool, 1)
runner = &SimpleRunner{
notifyChan: notifyChan,
exitChan: exitChan,
exitFlag: false,
routine: r,
isRunning: false,
}
return runner
}
func (runner *SimpleRunner) Start() error{
if runner.isRunning{
return errors.New("already started")
}
go runner.routine(runner)
runner.isRunning = true
return nil
}
func (runner *SimpleRunner) Stop() error{
if !runner.isRunning{
return errors.New("already stopped")
}
runner.notifyChan <- true
<- runner.exitChan
runner.isRunning = false
return nil
}
func (runner *SimpleRunner) IsRunning() bool{
return runner.isRunning
}
func (runner *SimpleRunner) SetStopping(){
runner.exitFlag = true
}
func (runner *SimpleRunner) IsStopping() bool{
return runner.exitFlag
}
func (runner *SimpleRunner) GetNotifyChannel() chan bool{
return runner.notifyChan
}
func (runner *SimpleRunner) NotifyExit(){
runner.exitChan <- true
}