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dispatcher-worker.go
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dispatcher-worker.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package tasks
import (
"github.com/pydio/cells/common/log"
)
var (
RC int
)
// Worker represents the worker that executes the jobs.
type Worker struct {
WorkerPool chan chan Runnable
JobChannel chan Runnable
quit chan bool
JobReQueue chan Runnable
activeChan chan int
tags map[string]string
}
// NewWorker creates and configures a new worker.
func NewWorker(workerPool chan chan Runnable, requeue chan Runnable, activeChan chan int, tags map[string]string) Worker {
return Worker{
WorkerPool: workerPool,
JobChannel: make(chan Runnable),
JobReQueue: requeue,
tags: tags,
activeChan: activeChan,
quit: make(chan bool)}
}
// Start method starts the run loop for the worker, listening for a quit channel in
// case we need to stop it.
func (w Worker) Start() {
go func() {
for {
// register the current worker into the worker queue.
w.WorkerPool <- w.JobChannel
select {
case runnable := <-w.JobChannel:
// we have received a work request.
w.activeChan <- 1
err := runnable.RunAction(w.JobReQueue)
// TODO : do something with errors
if err != nil {
log.Logger(runnable.Context).Error("cannot run action " + runnable.ID + ": " + err.Error())
}
w.activeChan <- -1
//log.Logger(runnable.Context).Info("Runnable in dispatcher: Finished", zap.Int("RC", RC), zap.String("runnable", runnable.ID))
case <-w.quit:
// we have received a signal to stop
return
}
}
}()
}
// Stop signals the worker to stop listening for work requests.
func (w Worker) Stop() {
go func() {
w.quit <- true
}()
}