Add WriteErrorToDefaultLogger function to log errors in ECS agent def…

…ault logger

agent/handlers/utils/helpers.go

@@ -80,6 +80,8 @@ func WriteJSONToResponse(w http.ResponseWriter, httpStatusCode int, responseJSON
 			"Unable to write %s json response message to ResponseWriter",
 			requestType)
 	}
+
+	WriteErrorToDefaultLogger(httpStatusCode, responseJSON, requestType)
 }
 
 // WriteResponseIfMarshalError checks the 'err' response of the json.Marshal function.
@@ -129,3 +131,10 @@ func LimitReachedHandler(auditLogger audit.AuditLogger) func(http.ResponseWriter
 		auditLogger.Log(logRequest, http.StatusTooManyRequests, "")
 	}
 }
+
+// WriteErrorToDefaultLogger write the requestType, httpStatusCode and responseJSON of error to the default logger
+func WriteErrorToDefaultLogger(httpStatusCode int, responseJSON []byte, requestType string) {
+	if httpStatusCode >= 400 && httpStatusCode <= 599 {
+		seelog.Errorf("HTTP response status code is '%d', request type is: %s, and response in JSON is %s", httpStatusCode, requestType, string(responseJSON))
+	}
+}