Health server runs on 127.0.0.1:9999, fix #272

internal/healthcheck/handler.go

@@ -0,0 +1,34 @@
+package healthcheck
+
+import (
+	"net"
+	"net/http"
+
+	"github.com/qdm12/golibs/logging"
+)
+
+type handler struct {
+	logger   logging.Logger
+	resolver *net.Resolver
+}
+
+func newHandler(logger logging.Logger, resolver *net.Resolver) http.Handler {
+	return &handler{
+		logger:   logger,
+		resolver: resolver,
+	}
+}
+
+func (h *handler) ServeHTTP(responseWriter http.ResponseWriter, request *http.Request) {
+	if request.Method != http.MethodGet {
+		http.Error(responseWriter, "method not supported for healthcheck", http.StatusBadRequest)
+		return
+	}
+	err := healthCheck(request.Context(), h.resolver)
+	if err != nil {
+		h.logger.Error(err)
+		http.Error(responseWriter, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	responseWriter.WriteHeader(http.StatusOK)
+}