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main.go
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main.go
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package main
import (
"fmt"
"net/http"
"os"
"time"
"github.com/go-co-op/gocron"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/rs/zerolog"
log "github.com/rs/zerolog/log"
"github.com/vvrnv/kube-ns-cleaner/config"
"github.com/vvrnv/kube-ns-cleaner/k8sclient"
"github.com/vvrnv/kube-ns-cleaner/metrics"
)
// scheduler for running all functions
func runCronJobs() {
scheduler := gocron.NewScheduler(time.Local)
cron := config.Config.Cron
scheduler.Cron(cron).Do(func() {
log.Info().Msg("Scheduler started")
k8sclient.K8sClient()
})
scheduler.StartBlocking()
}
func statusHandler(logger zerolog.Logger) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprint(w, "Service is working")
log.Info().Msgf("GET %s 200", r.URL.Path)
}
}
func main() {
// set up logging
runLogFile, _ := os.OpenFile(
os.Getenv("KUBE_NS_CLEANER_LOGS_DIR"),
os.O_APPEND|os.O_CREATE|os.O_WRONLY,
0664,
)
multi := zerolog.MultiLevelWriter(os.Stdout, runLogFile)
zerolog.TimeFieldFormat = "15:04:05.000"
log.Logger = zerolog.New(multi).With().Timestamp().Logger()
log.Info().Msg(("Kube-ns-cleaner is starting"))
// load application configuration
if err := config.LoadConfig("/opt/app/"); err != nil {
log.Fatal().Msgf("invalid application configuration: %s", err)
}
log.Info().Msg(("Config successfully loaded"))
log.Info().Msgf("Waiting for a cron schedule. Current schedule is `%s`", config.Config.Cron)
http.HandleFunc("/api/status", statusHandler(log.Logger))
metrics.RecordMetrics()
http.Handle("/metrics", promhttp.Handler())
addr := ":5001"
log.Info().Msgf("Starting server at %s", addr)
go runCronJobs()
err := http.ListenAndServe(addr, nil)
if err != nil {
log.Fatal().Msgf("Server stopped %s", err)
}
}