PluralKit/services/scheduled_tasks/main.go
2024-10-27 04:29:16 +09:00

106 lines
2.5 KiB
Go

package main
import (
"fmt"
"log"
"os"
"runtime/debug"
"strings"
"time"
"net/http"
"github.com/getsentry/sentry-go"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promauto"
"github.com/prometheus/client_golang/prometheus/promhttp"
)
var set_guild_count = false
var (
cleanupQueueLength = promauto.NewGauge(prometheus.GaugeOpts{
Name: "pluralkit_image_cleanup_queue_length",
Help: "Remaining image cleanup jobs",
})
)
func main() {
if _, ok := os.LookupEnv("SET_GUILD_COUNT"); ok {
set_guild_count = true
}
err := sentry.Init(sentry.ClientOptions{
Dsn: os.Getenv("SENTRY_DSN"),
})
if err != nil {
panic(err)
}
log.Println("connecting to databases")
connect_dbs()
log.Println("starting scheduled tasks runner")
go func() {
wait_until_next_minute()
go doforever(time.Minute, withtime("stats updater", update_db_meta))
go doforever(time.Minute*10, withtime("message stats updater", update_db_message_meta))
go doforever(time.Minute, withtime("discord stats updater", update_discord_stats))
go doforever(time.Minute*30, withtime("queue deleted image cleanup job", queue_deleted_image_cleanup))
}()
go doforever(time.Second * 10, withtime("prometheus updater", update_prom))
log.Println("listening for prometheus on :9000")
http.Handle("/metrics", promhttp.Handler())
http.ListenAndServe(":9000", nil)
}
func wait_until_next_minute() {
now := time.Now().UTC().Add(time.Minute)
after := time.Date(now.Year(), now.Month(), now.Day(), now.Hour(), now.Minute(), 0, 0, time.UTC)
time.Sleep(after.Sub(time.Now().UTC()))
}
func get_env_var(key string) string {
if val, ok := os.LookupEnv(key); ok {
return val
}
panic(fmt.Errorf("missing `%s` in environment", key))
}
func withtime(name string, todo func()) func() {
return func() {
log.Println("running", name)
timeBefore := time.Now()
todo()
timeAfter := time.Now()
log.Println("ran", name, "in", timeAfter.Sub(timeBefore).String())
}
}
func doforever(dur time.Duration, todo func()) {
for {
go wrapRecover(todo)
time.Sleep(dur)
}
}
func wrapRecover(todo func()) {
defer func() {
if err := recover(); err != nil {
if val, ok := err.(error); ok {
sentry.CaptureException(val)
} else {
sentry.CaptureMessage(fmt.Sprint("unknown error", err))
}
stack := strings.Split(string(debug.Stack()), "\n")
stack = stack[7:]
log.Printf("error running tasks: %v\n", err)
fmt.Println(strings.Join(stack, "\n"))
}
}()
todo()
}