forked from sodafoundation/strato
/
crontrigger.go
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/
crontrigger.go
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// Copyright (c) 2018 Huawei Technologies 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 crontrigger
import (
"fmt"
"github.com/micro/go-log"
"github.com/opensds/multi-cloud/dataflow/pkg/model"
"github.com/opensds/multi-cloud/dataflow/pkg/scheduler/trigger"
"github.com/robfig/cron"
)
type CronTrigger struct {
plans map[string]*cron.Cron
}
func init() {
ct := &CronTrigger{
plans: make(map[string]*cron.Cron),
}
trigger.RegisterTrigger(trigger.TriggerTypeCron, ct)
}
func (c *CronTrigger) Add(planId, properties string, executer trigger.Executer) error {
cn := cron.New()
c.plans[planId] = cn
if err := cn.AddFunc(properties, executer.Run); err != nil {
log.Logf("Add plan(%s) to corn trigger failed: %v", planId, err)
return fmt.Errorf("Add plan(%s) to corn trigger failed: %v", planId, err)
}
cn.Start()
log.Logf("Add plan(%s) to scheduler, next execute time: %v", planId, cn.Entries()[0].Next)
return nil
}
func (c *CronTrigger) Update(planId, properties string, executer trigger.Executer) error {
// If the executer is not specified use the previous one.
var ok bool
if executer == nil {
if executer, ok = c.plans[planId]; ok {
return model.ERR_PLAN_NOT_IN_TRIGGER
}
}
c.Remove(planId)
if err := c.Add(planId, properties, executer); err != nil {
return err
}
return nil
}
func (c *CronTrigger) Remove(planId string) error {
cn, ok := c.plans[planId]
if !ok {
log.Logf("Specified plan(%s) is not found", planId)
return nil
}
cn.Stop()
delete(c.plans, planId)
return nil
}