94 lines
2 KiB
Go
94 lines
2 KiB
Go
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/*
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Copyright 2017-2022 CAcert Inc.
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SPDX-License-Identifier: Apache-2.0
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package jobs
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import (
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"log"
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"os"
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)
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type JobScheduler struct {
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infoLogger *log.Logger
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errorLogger *log.Logger
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jobs map[JobIdentifier]Job
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rescheduleChannel chan JobIdentifier
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quitChannel chan struct{}
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}
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type SchedulerOption func(scheduler *JobScheduler)
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func NewJobScheduler(opts ...SchedulerOption) *JobScheduler {
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rescheduleChannel := make(chan JobIdentifier, 1)
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jobScheduler := &JobScheduler{
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infoLogger: log.New(os.Stdout, "", 0),
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errorLogger: log.New(os.Stderr, "", 0),
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jobs: make(map[JobIdentifier]Job, 2),
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rescheduleChannel: rescheduleChannel,
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quitChannel: make(chan struct{}),
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}
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for _, o := range opts {
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o(jobScheduler)
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}
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return jobScheduler
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}
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func SchedulerLog(infoLog, errorLog *log.Logger) SchedulerOption {
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return func(s *JobScheduler) {
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s.infoLogger = infoLog
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s.errorLogger = errorLog
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}
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}
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func (js *JobScheduler) Schedule() {
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for _, job := range js.jobs {
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job.Schedule()
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}
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for {
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select {
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case jobID := <-js.rescheduleChannel:
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js.jobs[jobID].Schedule()
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case <-js.quitChannel:
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for _, job := range js.jobs {
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job.Stop()
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}
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js.infoLogger.Print("stop job scheduler")
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return
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}
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}
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}
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func (js *JobScheduler) AddJob(job Job) {
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js.jobs[job.Identifier()] = job
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}
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func (js *JobScheduler) Quit() {
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js.quitChannel <- struct{}{}
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}
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func (js *JobScheduler) Reschedule(jobIDs ...JobIdentifier) {
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for i := range jobIDs {
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js.rescheduleChannel <- jobIDs[i]
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}
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}
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