Add /livez endpoint.

Author: lukaszraczylo

README.md

@@ -17,6 +17,7 @@ I wanted to monitor the queries and responses of our graphql endpoint. Still, we
 * `:8080/*` - the graphql passthrough endpoint
 * `:9393/metrics` - the prometheus metrics endpoint
 * `:8080/healthz` - the healthcheck endpoint
+* `:8080/livez` - the liveness probe endpoint
 
 ### Features
 

server.go

@@ -25,6 +25,8 @@ func StartHTTPProxy() {
 	server.Get("/*", proxyTheRequest)
 
 	server.Get("/healthz", healthCheck)
+	server.Get("/livez", healthCheck)
+
 	err := server.Listen(fmt.Sprintf(":%d", cfg.Server.PortGraphQL))
 	if err != nil {
 		cfg.Logger.Critical("Can't start the service", map[string]interface{}{"error": err.Error()})