/*- * ========================LICENSE_START================================= * O-RAN-SC * %% * Copyright (C) 2019 AT&T Intellectual Property and Nokia * %% * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * ========================LICENSE_END=================================== */ package org.oransc.ric.portal.dashboard.controller; import java.lang.invoke.MethodHandles; import org.oransc.ric.portal.dashboard.model.ErrorTransport; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.client.HttpStatusCodeException; import org.springframework.web.context.request.WebRequest; import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler; /** * Catches Http status code exceptions and builds a response with code 502 and * some details wrapped in an ErrorTransport object. This factors out try-catch * blocks in many controller methods. * * Why 502? I quote:
HTTP server received an invalid response from a * server it consulted when acting as a proxy or gateway.* * This class and the methods are not strictly necessary, the * SimpleErrorController is invoked when any controller method takes an uncaught * exception, but this approach provides a better response to the front end and * doesn't signal internal server error. * * Also see: