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/*
* Copyright (c) 2017-2018 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package manager
import (
"context"
"fmt"
"sync"
"git.tizen.org/tools/weles"
"git.tizen.org/tools/weles/manager/dryad"
)
type dryadJob struct {
info weles.DryadJobInfo
mutex *sync.Mutex
runner DryadJobRunner
notify chan<- weles.DryadJobStatusChange
cancel context.CancelFunc
failReason string
}
// newDryadJobWithCancel creates an instance of dryadJob without a goroutine.
// It is intended to be used by tests and newDryadJob only.
func newDryadJobWithCancel(job weles.JobID, changes chan<- weles.DryadJobStatusChange,
runner DryadJobRunner, cancel context.CancelFunc) *dryadJob {
dJob := &dryadJob{
mutex: new(sync.Mutex),
runner: runner,
info: weles.DryadJobInfo{
Job: job,
},
notify: changes,
cancel: cancel,
}
dJob.changeStatus(weles.DryadJobStatusNEW)
return dJob
}
// newDryadJob creates an instance of dryadJob and starts a goroutine
// executing phases of given job implemented by provider of DryadJobRunner interface.
func newDryadJob(job weles.JobID, rusalka weles.Dryad, conf weles.Config,
changes chan<- weles.DryadJobStatusChange, artifactDBPath string) *dryadJob {
session := dryad.NewSessionProvider(rusalka, artifactDBPath)
device := dryad.NewDeviceCommunicationProvider(session)
ctx, cancel := context.WithCancel(context.Background())
runner := newDryadJobRunner(ctx, session, device, conf)
dJob := newDryadJobWithCancel(job, changes, runner, cancel)
go dJob.run(ctx)
return dJob
}
// GetJobInfo returns DryadJobInfo of dryadJob and prevents race condition.
func (d *dryadJob) GetJobInfo() weles.DryadJobInfo {
d.mutex.Lock()
defer d.mutex.Unlock()
return d.info
}
// changeState updates Status and sends DryadJobStatusChange to the notify channel.
func (d *dryadJob) changeStatus(state weles.DryadJobStatus) {
d.mutex.Lock()
defer d.mutex.Unlock()
d.info.Status = state
select {
case d.notify <- weles.DryadJobStatusChange{Job: d.info.Job, Status: state}:
default:
}
}
func (d *dryadJob) executePhase(name weles.DryadJobStatus, f func() error) {
d.changeStatus(name)
err := f()
if err != nil {
panic(fmt.Errorf("%s phase failed: %s", name, err))
}
}
// run executes stages of dryadJob in order.
func (d *dryadJob) run(_ context.Context) {
defer func() {
if r := recover(); r != nil {
if err, ok := r.(error); ok {
d.failReason = err.Error()
} else {
d.failReason = fmt.Sprintf("run panicked: %v", r)
}
d.changeStatus(weles.DryadJobStatusFAIL)
return
}
d.changeStatus(weles.DryadJobStatusOK)
}()
d.executePhase(weles.DryadJobStatusDEPLOY, d.runner.Deploy)
d.executePhase(weles.DryadJobStatusBOOT, d.runner.Boot)
d.executePhase(weles.DryadJobStatusTEST, d.runner.Test)
}
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