gosora/common/tasks.go
Azareal 52c8be4173 Variables which are computed multiple times in templates should only be computed once now.
Enabled the Watchdog Goroutine.
Moved a couple of parser tests into their own file.
Eliminated the hard-coded URLs in TestParser()
Refactored the alert system so that a specific actor is only loaded once rather than once for each alert. This isn't a problem in practice due to the user cache, but it might be on high traffic sites.
Don't run HandleServerSync() on single server setups.
Don't load the user in GetTopicUser(), if the topic creator is the current user.
Fixed a bug in the template generator where endloop nodes were being pushed instead of endif ones.
2018-11-22 17:21:43 +10:00

130 lines
3.1 KiB
Go

/*
*
* Gosora Task System
* Copyright Azareal 2017 - 2018
*
*/
package common
import (
"database/sql"
"log"
"time"
"github.com/Azareal/Gosora/query_gen"
)
type TaskStmts struct {
getExpiredScheduledGroups *sql.Stmt
getSync *sql.Stmt
}
var ScheduledHalfSecondTasks []func() error
var ScheduledSecondTasks []func() error
var ScheduledFifteenMinuteTasks []func() error
var ScheduledHourTasks []func() error
var ShutdownTasks []func() error
var taskStmts TaskStmts
var lastSync time.Time
// TODO: Add a TaskInits.Add
func init() {
lastSync = time.Now()
DbInits.Add(func(acc *qgen.Accumulator) error {
taskStmts = TaskStmts{
getExpiredScheduledGroups: acc.Select("users_groups_scheduler").Columns("uid").Where("UTC_TIMESTAMP() > revert_at AND temporary = 1").Prepare(),
getSync: acc.Select("sync").Columns("last_update").Prepare(),
}
return acc.FirstError()
})
}
// AddScheduledHalfSecondTask is not concurrency safe
func AddScheduledHalfSecondTask(task func() error) {
ScheduledHalfSecondTasks = append(ScheduledHalfSecondTasks, task)
}
// AddScheduledSecondTask is not concurrency safe
func AddScheduledSecondTask(task func() error) {
ScheduledSecondTasks = append(ScheduledSecondTasks, task)
}
// AddScheduledFifteenMinuteTask is not concurrency safe
func AddScheduledFifteenMinuteTask(task func() error) {
ScheduledFifteenMinuteTasks = append(ScheduledFifteenMinuteTasks, task)
}
// AddScheduledHourTask is not concurrency safe
func AddScheduledHourTask(task func() error) {
ScheduledHourTasks = append(ScheduledHourTasks, task)
}
// AddShutdownTask is not concurrency safe
func AddShutdownTask(task func() error) {
ShutdownTasks = append(ShutdownTasks, task)
}
// TODO: Use AddScheduledSecondTask
func HandleExpiredScheduledGroups() error {
rows, err := taskStmts.getExpiredScheduledGroups.Query()
if err != nil {
return err
}
defer rows.Close()
var uid int
for rows.Next() {
err := rows.Scan(&uid)
if err != nil {
return err
}
// Sneaky way of initialising a *User, please use the methods on the UserStore instead
user := BlankUser()
user.ID = uid
err = user.RevertGroupUpdate()
if err != nil {
return err
}
}
return rows.Err()
}
// TODO: Use AddScheduledSecondTask
// TODO: Be a little more granular with the synchronisation
// TODO: Synchronise more things
// TODO: Does this even work?
func HandleServerSync() error {
// We don't want to run any unnecessary queries when there is nothing to synchronise
if Config.ServerCount == 1 {
return nil
}
var lastUpdate time.Time
err := taskStmts.getSync.QueryRow().Scan(&lastUpdate)
if err != nil {
return err
}
if lastUpdate.After(lastSync) {
err = Forums.LoadForums()
if err != nil {
log.Print("Unable to reload the forums")
return err
}
// TODO: Resync the groups
// TODO: Resync the permissions
err = LoadSettings()
if err != nil {
log.Print("Unable to reload the settings")
return err
}
err = WordFilters.ReloadAll()
if err != nil {
log.Print("Unable to reload the word filters")
return err
}
}
return nil
}