/
app.go
93 lines (76 loc) · 2.04 KB
/
app.go
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package app
import (
"fmt"
"github.com/elvin-tajirzada/log-alerting/pkg/config"
"github.com/elvin-tajirzada/log-alerting/pkg/contact-point"
"github.com/elvin-tajirzada/log-alerting/pkg/db"
"github.com/go-co-op/gocron"
"log"
"os"
"os/signal"
"syscall"
"time"
)
type (
App interface {
Start()
Shutdown()
}
app struct {
Config *config.Config
Loki *db.Loki
Telegram *contact_point.Telegram
Scheduler *gocron.Scheduler
}
)
func New() (App, error) {
// create config
conf, confErr := config.New()
if confErr != nil {
return nil, fmt.Errorf("failed to create a new config: %v", confErr)
}
// create loki
loki := db.NewLoki(conf)
// create telegram
telegram, telegramErr := contact_point.NewTelegram(conf, loki)
if telegramErr != nil {
return nil, fmt.Errorf("failed to create a new telegram: %v", telegramErr)
}
scheduler := gocron.NewScheduler(conf.Timezone)
return &app{
Config: conf,
Loki: loki,
Telegram: telegram,
Scheduler: scheduler,
}, nil
}
func (a *app) Start() {
_, sendErrorMessageErr := a.Scheduler.Every(a.Config.EvaluationTime).Do(a.Telegram.SendErrorMessage, a.Config.EvaluationTime)
if sendErrorMessageErr != nil {
log.Fatalf("failed to setings up cron job for the SendErrorMessage func: %v", sendErrorMessageErr)
}
_, sendDailyReportErr := a.Scheduler.Every(1).Day().At("00:00").Do(a.Telegram.SendDailyReport, time.Hour*24)
if sendDailyReportErr != nil {
log.Fatalf("failed to settings up cron job for the SendDailyReport func: %v", sendDailyReportErr)
}
a.Scheduler.StartAsync()
log.Println("log-alerting started successfully")
}
func (a *app) Shutdown() {
signals := make(chan os.Signal)
done := make(chan struct{})
signal.Notify(signals, syscall.SIGINT, syscall.SIGTERM)
go func() {
sig := <-signals
a.Scheduler.Stop()
if a.Scheduler.IsRunning() {
log.Println("scheduler could not stopped")
} else {
log.Println("scheduler stopped")
}
log.Printf("received signal: %v\n", sig)
log.Println("log-alerting exited. Bye...")
done <- struct{}{}
}()
<-done
}