Initial Release

main.go

@@ -0,0 +1,79 @@
+package main
+
+import (
+	"fmt"
+	"friendica-exporter/internal/client"
+	"friendica-exporter/internal/config"
+	"friendica-exporter/internal/metrics"
+	"friendica-exporter/serverinfo"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"net/http"
+	"os"
+
+	"github.com/sirupsen/logrus"
+)
+
+var (
+	// Version contains the version as set during build.
+	Version = ""
+
+	// GitCommit contains the git commit hash set during the build.
+	GitCommit = ""
+
+	log = &logrus.Logger{
+		Out: os.Stderr,
+		Formatter: &logrus.TextFormatter{
+			DisableTimestamp: true,
+		},
+		Hooks:        make(logrus.LevelHooks),
+		Level:        logrus.InfoLevel,
+		ExitFunc:     os.Exit,
+		ReportCaller: false,
+	}
+)
+
+func main() {
+	cfg, err := config.Get()
+	if err != nil {
+		log.Fatalf("Error loading configuration: %s", err)
+	}
+
+	if cfg.RunMode == config.RunModeHelp {
+		return
+	}
+
+	if cfg.RunMode == config.RunModeVersion {
+		fmt.Println(Version)
+		return
+	}
+
+	log.Infof("friendica-exporter %s", Version)
+	userAgent := fmt.Sprintf("friendica-exporter/%s", Version)
+
+	if err := cfg.Validate(); err != nil {
+		log.Fatalf("Error validating configuration: %s", err)
+	}
+
+	log.Infof("Friendica server: %s Authentication using token.", cfg.ServerURL)
+
+	statsUrl := serverinfo.StatsURL(cfg.ServerURL, cfg.StatsToken)
+
+	if cfg.TLSSkipVerify {
+		log.Warn("HTTPS certificate verification is disabled.")
+	}
+
+	statsClient := client.New(statsUrl, cfg.Timeout, userAgent, cfg.TLSSkipVerify)
+	if err := metrics.RegisterCollector(log, statsClient); err != nil {
+		log.Fatalf("Failed to register collector: %s", err)
+	}
+
+	if err := metrics.RegisterStatsMetrics(Version, GitCommit); err != nil {
+		log.Fatalf("Failed to register info metrics: %s", err)
+	}
+
+	http.Handle("/metrics", promhttp.Handler())
+	http.Handle("/", http.RedirectHandler("/metrics", http.StatusFound))
+
+	log.Infof("Listen on %s...", cfg.ListenAddr)
+	log.Fatal(http.ListenAndServe(cfg.ListenAddr, nil))
+}