Production state

cmd/healthcheck/main.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+	"time"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintln(os.Stderr, "usage: healthcheck URL")
+		os.Exit(2)
+	}
+	client := &http.Client{Timeout: 2 * time.Second}
+	response, err := client.Get(os.Args[1])
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	defer response.Body.Close()
+	if response.StatusCode != http.StatusOK {
+		fmt.Fprintln(os.Stderr, response.Status)
+		os.Exit(1)
+	}
+}