add health endpoint

README.md

@@ -0,0 +1,4 @@
+# Media Proxy
+
+Proxy server to transform media files (images and PDFs) present in S3 bucket.
+

internal/mediaprocessor/media_processor.go

@@ -53,7 +53,7 @@ func NewMediaProcessor() *MediaProcessor {
 
 func getContentType(imageBytes []byte) string {
 	contentType := http.DetectContentType(imageBytes)
-	fmt.Println(contentType)
+	// fmt.Println(contentType)
 	if contentType == "text/xml; charset=utf-8" {
 		contentType = "image/svg+xml"
 	}

internal/server/server.go

@@ -105,6 +105,7 @@ func NewServer(config ServerConfig, mediaProcessor *mediaprocessor.MediaProcesso
 	mux.Use(s.prometheusMiddleware)
 	mux.HandleFunc("/{signature}/metadata/*", s.handleMetadataRequest)
 	mux.HandleFunc("/{signature}/media/*", s.handleTransformRequest)
+	mux.HandleFunc("/health", s.health)
 	return s
 }
 
@@ -118,6 +119,10 @@ func (w *statusWriter) WriteHeader(code int) {
 	w.ResponseWriter.WriteHeader(code)
 }
 
+func (s *server) health(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(http.StatusOK)
+}
+
 func (s *server) prometheusMiddleware(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		activeRequests.Inc()