Initial commit

main.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"net"
+	"os"
+	"time"
+
+	chk "git.happydns.org/checker-authoritative-consistency/checker"
+	"git.happydns.org/checker-sdk-go/checker/server"
+)
+
+// Version is the standalone binary's version. It defaults to "custom-build"
+// and is meant to be overridden by the CI at link time:
+//
+//	go build -ldflags "-X main.Version=1.2.3" .
+var Version = "custom-build"
+
+var (
+	listenAddr  = flag.String("listen", ":8080", "HTTP listen address")
+	healthcheck = flag.Bool("healthcheck", false, "Probe the listen address over TCP and exit (used by Docker HEALTHCHECK)")
+)
+
+func main() {
+	flag.Parse()
+
+	if *healthcheck {
+		probe := *listenAddr
+		if len(probe) > 0 && probe[0] == ':' {
+			probe = "127.0.0.1" + probe
+		}
+		conn, err := net.DialTimeout("tcp", probe, 2*time.Second)
+		if err != nil {
+			log.Printf("healthcheck failed: %v", err)
+			os.Exit(1)
+		}
+		conn.Close()
+		return
+	}
+
+	chk.Version = Version
+
+	srv := server.New(chk.Provider())
+	if err := srv.ListenAndServe(*listenAddr); err != nil {
+		log.Fatalf("server error: %v", err)
+	}
+}