feat: add heartbeat metrics

conf.example.yml

@@ -153,3 +153,5 @@ metrics:
   prometheus:
     endpoint: /metrics
     listen_addr: ":6178" # default listens on port 6178 on all IPs.
+  heartbeat:
+    url: http(s)://url-to-make-request-to

main.go

@@ -16,7 +16,8 @@ import (
 	"gickup/gogs"
 	"gickup/local"
 	"gickup/logger"
-	prometheus "gickup/metrics/prometheus"
+	"gickup/metrics/heartbeat"
+	"gickup/metrics/prometheus"
 	"gickup/types"
 
 	"github.com/alecthomas/kong"
@@ -149,7 +150,7 @@ func RunBackup(conf *types.Conf) {
 	prometheus.CountReposDiscovered.WithLabelValues("gitlab").Set(float64(len(repos)))
 	Backup(repos, conf)
 
-	//Bitbucket
+	// Bitbucket
 	repos = bitbucket.Get(conf)
 	prometheus.CountReposDiscovered.WithLabelValues("bitbucket").Set(float64(len(repos)))
 	Backup(repos, conf)
@@ -160,6 +161,10 @@ func RunBackup(conf *types.Conf) {
 	prometheus.JobsComplete.Inc()
 	prometheus.JobDuration.Observe(duration.Seconds())
 
+	if conf.Metrics.Heartbeat.URL != "" {
+		heartbeat.Send(conf.Metrics.Heartbeat)
+	}
+
 	log.Info().
 		Str("duration", duration.String()).
 		Msg("Backup run complete")

metrics/heartbeat/heartbeat.go

@@ -0,0 +1,16 @@
+package heartbeat
+
+import (
+	"net/http"
+
+	"gickup/types"
+	"github.com/rs/zerolog/log"
+)
+
+func Send(conf types.HeartbeatConfig) {
+	log.Info().Str("url", conf.URL).Msg("sending heartbeat")
+	_, err := http.Get(conf.URL)
+	if err != nil {
+		log.Fatal().Str("monitoring", "heartbeat").Msg(err.Error())
+	}
+}

types/types.go

@@ -50,8 +50,13 @@ type PrometheusConfig struct {
 	Endpoint   string `yaml:"endpoint"`
 }
 
+type HeartbeatConfig struct {
+	URL string `yaml:"url"`
+}
+
 type Metrics struct {
 	Prometheus PrometheusConfig `yaml:"prometheus"`
+	Heartbeat  HeartbeatConfig  `yaml:"heartbeat"`
 }
 
 type Logging struct {