cacert-boardvoting/cmd/boardvoting/jobs.go

251 lines
5 KiB
Go

/*
Copyright 2017-2022 CAcert Inc.
SPDX-License-Identifier: Apache-2.0
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 main
import (
"context"
"log"
"time"
"git.cacert.org/cacert-boardvoting/internal/models"
)
type Job interface {
Schedule()
Run()
Stop()
}
type RemindVotersJob struct {
infoLog, errorLog *log.Logger
timer *time.Timer
voters *models.VoterModel
decisions *models.MotionModel
notify chan NotificationMail
reschedule chan Job
}
func (r *RemindVotersJob) Schedule() {
const reminderDays = 3
year, month, day := time.Now().UTC().Date()
nextExecution := time.Date(
year, month, day, 0, 0, 0, 0, time.UTC,
).AddDate(0, 0, reminderDays)
r.infoLog.Printf("scheduling RemindVotersJob for %s", nextExecution)
when := time.Until(nextExecution)
if r.timer != nil {
r.timer.Reset(when)
return
}
r.timer = time.AfterFunc(when, r.Run)
}
func (r *RemindVotersJob) Run() {
r.infoLog.Print("running RemindVotersJob")
defer func(r *RemindVotersJob) { r.reschedule <- r }(r)
var (
voters []models.Voter
decisions []models.Motion
err error
)
ctx := context.Background()
voters, err = r.voters.GetReminderVoters(ctx)
if err != nil {
r.errorLog.Printf("problem getting voters: %v", err)
return
}
for _, voter := range voters {
v := voter
decisions, err = r.decisions.UnVotedDecisionsForVoter(ctx, &v)
if err != nil {
r.errorLog.Printf("problem getting unvoted decisions: %v", err)
return
}
if len(decisions) > 0 {
r.notify <- &RemindVoterNotification{voter: voter, decisions: decisions}
}
}
}
func (r *RemindVotersJob) Stop() {
if r.timer != nil {
r.timer.Stop()
r.timer = nil
}
}
func (app *application) NewRemindVotersJob(
rescheduleChannel chan Job,
) Job {
return &RemindVotersJob{
infoLog: app.infoLog,
errorLog: app.errorLog,
voters: app.voters,
decisions: app.motions,
reschedule: rescheduleChannel,
notify: app.mailNotifier.notifyChannel,
}
}
type CloseDecisionsJob struct {
timer *time.Timer
infoLog *log.Logger
errorLog *log.Logger
decisions *models.MotionModel
reschedule chan Job
notify chan NotificationMail
}
func (c *CloseDecisionsJob) Schedule() {
var (
nextDue *time.Time
err error
)
ctx := context.Background()
nextDue, err = c.decisions.NextPendingDecisionDue(ctx)
if err != nil {
c.errorLog.Printf("could not get next pending due date")
c.Stop()
return
}
if nextDue == nil {
c.infoLog.Printf("no next planned execution of CloseDecisionsJob")
c.Stop()
return
}
c.infoLog.Printf("scheduling CloseDecisionsJob for %s", nextDue)
when := time.Until(nextDue.Add(time.Second))
if c.timer == nil {
c.timer = time.AfterFunc(when, c.Run)
return
}
c.timer.Reset(when)
}
func (c *CloseDecisionsJob) Run() {
c.infoLog.Printf("running CloseDecisionsJob")
results, err := c.decisions.CloseDecisions(context.Background())
if err != nil {
c.errorLog.Printf("closing decisions failed: %v", err)
}
for _, res := range results {
c.notify <- &ClosedDecisionNotification{decision: res}
}
c.reschedule <- c
}
func (c *CloseDecisionsJob) Stop() {
if c.timer != nil {
c.timer.Stop()
c.timer = nil
}
}
func (app *application) NewCloseDecisionsJob(
rescheduleChannel chan Job,
) Job {
return &CloseDecisionsJob{
infoLog: app.infoLog,
errorLog: app.errorLog,
decisions: app.motions,
reschedule: rescheduleChannel,
notify: app.mailNotifier.notifyChannel,
}
}
type JobScheduler struct {
infoLogger *log.Logger
errorLogger *log.Logger
jobs []Job
rescheduleChannel chan Job
quitChannel chan struct{}
}
func (app *application) NewJobScheduler() {
rescheduleChannel := make(chan Job, 1)
app.jobScheduler = &JobScheduler{
infoLogger: app.infoLog,
errorLogger: app.errorLog,
jobs: make([]Job, 0, 2),
rescheduleChannel: rescheduleChannel,
quitChannel: make(chan struct{}),
}
app.jobScheduler.addJob(app.NewCloseDecisionsJob(rescheduleChannel))
app.jobScheduler.addJob(app.NewRemindVotersJob(rescheduleChannel))
}
func (js *JobScheduler) Schedule() {
for _, job := range js.jobs {
job.Schedule()
}
for {
select {
case job := <-js.rescheduleChannel:
job.Schedule()
case <-js.quitChannel:
for _, job := range js.jobs {
job.Stop()
}
js.infoLogger.Print("stop job scheduler")
return
}
}
}
func (js *JobScheduler) addJob(job Job) {
js.jobs = append(js.jobs, job)
}
func (js *JobScheduler) Quit() {
js.quitChannel <- struct{}{}
}