gosora/common/tasks.go

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
}