Implement metrics and cli

cmd/pod-cleaner/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"flag"
+	"github.com/cyrilix/pod-cleaner/pkg/cleaner"
+	"go.uber.org/zap"
+
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"log"
+	"net/http"
+)
+
+func main() {
+	var metricPath string
+	var metricPort string
+	var logfile string
+
+	flag.StringVar(&metricPath, "metric-path", "/metrics", "Url path for metrics")
+	flag.StringVar(&metricPort, "metric-port", ":9098", "Http port to expose metrics")
+	flag.StringVar(&logfile, "log-file", "/var/syslog", "Log file to watch for orphan messages")
+
+	logLevel := zap.LevelFlag("log", zap.InfoLevel, "log level")
+	flag.Parse()
+
+	config := zap.NewDevelopmentConfig()
+	config.Level = zap.NewAtomicLevelAt(*logLevel)
+	lgr, err := config.Build()
+	if err != nil {
+		log.Fatalf("unable to init logger: %v", err)
+	}
+	defer lgr.Sync()
+
+	zap.ReplaceGlobals(lgr)
+
+	c := cleaner.NewPodWatcher("log-file")
+	defer c.Close()
+	go c.Watch()
+
+	http.Handle(metricPath, promhttp.Handler())
+	err = http.ListenAndServe(metricPort, nil)
+	if err != nil {
+		log.Panicf("unable to start prometheus listener: %v", err)
+	}
+}