Add healthcheck endpoints and scripts

05-example-web-application/api-golang/healthcheck/healthcheck.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"time"
+)
+
+func main() {
+
+	port, exists := os.LookupEnv("PORT")
+	if !exists {
+		port = "8080"
+	}
+
+	client := http.Client{
+		Timeout: 2 * time.Second,
+	}
+
+	resp, err := client.Get("http://localhost:" + port + "/ping")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Print the HTTP Status Code and Status Name
+	fmt.Println("HTTP Response Status:", resp.StatusCode, http.StatusText(resp.StatusCode))
+
+	if resp.StatusCode >= 200 && resp.StatusCode <= 299 {
+		fmt.Println("HTTP Status is in the 2xx range")
+	} else {
+		fmt.Println("Argh! Broken")
+		os.Exit(1)
+	}
+}

05-example-web-application/api-golang/main.go

@@ -42,5 +42,11 @@ func main() {
 			"now": tm,
 		})
 	})
-	r.Run() // listen and serve on 0.0.0.0:8080
+
+	r.GET("/ping", func(c *gin.Context) {
+		tm = database.GetTime(c)
+		c.JSON(200, "pong")
+	})
+
+	r.Run() // listen and serve on 0.0.0.0:8080 (or "PORT" env var)
 }