initial commit

testapp/srv/main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net"
+	"net/http"
+	"os"
+	"os/user"
+	"strconv"
+	"time"
+)
+
+var version string
+
+func get(c *http.Client, url string) (body string, err error) {
+	resp, err := c.Get(url)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	b, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return
+	}
+	body = string(b)
+	return
+}
+
+func main() {
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		log.Printf("%s %s %s", r.RemoteAddr, r.Method, r.URL)
+		h, err := os.Hostname()
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		u, err := user.LookupId(strconv.Itoa(os.Getuid()))
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		//url := "http://" + os.Getenv("DB_SERVICE_HOST") + ":" + os.Getenv("DB_SERVICE_PORT")
+		//url := "http://testapp-db.default.svc.cluster.local:8080"
+		c := &http.Client{Transport: &http.Transport{
+			DialContext: (&net.Dialer{
+				Timeout: 5 * time.Second,
+			}).DialContext,
+		}}
+		dbUrl := "http://testapp-db:8080"
+		dbBody, err := get(c, dbUrl)
+		if err != nil {
+			dbBody = err.Error()
+		}
+		apiUrl := "http://testapp-api:8080"
+		apiBody, err := get(c, apiUrl)
+		if err != nil {
+			apiBody = err.Error()
+		}
+		fmt.Fprintf(w, "Version: %s\nHostname: %s\nUser: %s (%s) (%s)\nDB URL: %s\nDB Response: %s\nAPI URL: %s\nAPI Response: %s\n",
+			version, h, u.Username, u.Uid, u.Gid,
+			dbUrl, dbBody,
+			apiUrl, apiBody)
+	})
+	s := &http.Server{
+		ReadTimeout:  5 * time.Second,
+		WriteTimeout: 10 * time.Second,
+		IdleTimeout:  120 * time.Second,
+		Addr:         ":8080",
+	}
+	log.Fatal(s.ListenAndServe())
+}