func reloadJobFromDB(cr *cron.Cron, error_jobs map[string]error, backend *dbBackend, arguments map[string]interface{}, id int64, name string) {
message_prefix := "[sys] reload job -"
if "" == name {
message_prefix = "[sys] load new job -"
}
job, e := backend.find(id)
if nil != e {
if "" == name {
log.Println(message_prefix, "[", id, "]")
} else {
log.Println(message_prefix, name)
}
return
}
e = afterLoad(job, arguments)
if nil != e {
log.Println(message_prefix, job.name)
return
}
id_str := fmt.Sprint(id)
log.Println(message_prefix, job.name)
cr.Unschedule(id_str)
delete(error_jobs, id_str)
sch, e := Parse(job.expression)
if nil != e {
msg := errors.New("[" + job.name + "] schedule failed," + e.Error())
error_jobs[id_str] = msg
log.Println(msg)
return
}
cr.Schedule(id_str, sch, job)
}
func reloadJobsFromDB(cr *cron.Cron, error_jobs map[string]error, backend *dbBackend, arguments map[string]interface{}) error {
jobs, e := backend.snapshot(nil)
if nil != e {
return errors.New("load snapshot from db failed, " + e.Error())
}
versions := map[int64]version{}
for _, v := range jobs {
versions[v.id] = v
}
for _, ent := range cr.Entries() {
if job, ok := ent.Job.(*JobFromDB); ok {
if v, ok := versions[job.id]; ok {
if !v.updated_at.Equal(job.updated_at) {
reloadJobFromDB(cr, error_jobs, backend, arguments, job.id, job.name)
}
delete(versions, job.id)
} else {
log.Println("[sys] delete job -", job.name)
cr.Unschedule(fmt.Sprint(job.id))
delete(error_jobs, fmt.Sprint(job.id))
}
}
}
for id, _ := range versions {
reloadJobFromDB(cr, error_jobs, backend, arguments, id, "")
}
return nil
}