Merge pull request #1 from universal-development/feature/simulation-c…

…ases

Added env variables to simulate different response codes

README.md

@@ -5,6 +5,9 @@ Test application to verify environment deployment and reachability over HTTP.
 Environment variables:
   * `LISTEN_ADDRESS` - listen address, `0.0.0.0` by default
   * `LISTEN_PORT` - listen port for requests, `8080` by default
+  * `APP_NAME` - name of application printed in output
+  * `HTTP_RESPONSE_CODE` - returned HTTP response code, 200 by default
+  * `PROCESSING_SLEEP` - block processing of request for specified ms, 0 by default
 
 ## Build
 

main.go

@@ -5,7 +5,9 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"strconv"
 	"strings"
+	"time"
 
 	"github.com/unidev-platform/golang-core/xenv"
 )
@@ -14,13 +16,30 @@ func main() {
 
 	// simple handler that prints hostname, requested path and env variables
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+
+		sleep := xenv.Env("PROCESSING_SLEEP", "0")
+		isleep, err := strconv.Atoi(sleep)
+		if err != nil {
+			log.Printf("%v", err)
+			return
+		}
+		time.Sleep(time.Duration(isleep) * time.Millisecond)
+
 		log.Println("Handling request")
+		code := xenv.Env("HTTP_RESPONSE_CODE", "200")
+		icode, err := strconv.Atoi(code)
+		if err != nil {
+			log.Printf("%v", err)
+			return
+		}
+		w.WriteHeader(icode)
 		hostname, err := os.Hostname()
 		if err != nil {
 			log.Printf("%v", err)
 			return
 		}
-		fmt.Fprintf(w, "%s path: %v \n ", hostname, r.URL.Path)
+		name := xenv.Env("APP_NAME", "TestApp")
+		fmt.Fprintf(w, "%s %s path: %v \n ", name, hostname, r.URL.Path)
 		for _, e := range os.Environ() {
 			pair := strings.SplitN(e, "=", 2)
 			fmt.Fprintf(w, "%v = %v \n", pair[0], pair[1])