| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.qpid.server.management.plugin.filter; |
| |
| import java.io.IOException; |
| |
| import javax.servlet.Filter; |
| import javax.servlet.FilterChain; |
| import javax.servlet.FilterConfig; |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletRequest; |
| import javax.servlet.ServletResponse; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.qpid.server.util.ConnectionScopedRuntimeException; |
| import org.apache.qpid.server.util.ExternalServiceException; |
| import org.apache.qpid.server.util.ExternalServiceTimeoutException; |
| import org.apache.qpid.server.util.ServerScopedRuntimeException; |
| |
| public class ExceptionHandlingFilter implements Filter |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(ExceptionHandlingFilter.class); |
| |
| private Thread.UncaughtExceptionHandler _uncaughtExceptionHandler; |
| |
| @Override |
| public void init(FilterConfig filterConfig) throws ServletException |
| { |
| _uncaughtExceptionHandler = Thread.getDefaultUncaughtExceptionHandler(); |
| } |
| |
| @Override |
| public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException |
| { |
| final String requestURI = ((HttpServletRequest) servletRequest).getRequestURI(); |
| try |
| { |
| filterChain.doFilter(servletRequest, servletResponse); |
| } |
| catch (ServerScopedRuntimeException | Error e) |
| { |
| try |
| { |
| if (e instanceof ServerScopedRuntimeException |
| && servletResponse instanceof HttpServletResponse |
| && !servletResponse.isCommitted()) |
| { |
| ((HttpServletResponse) servletResponse).sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); |
| } |
| } |
| finally |
| { |
| if (_uncaughtExceptionHandler == null) |
| { |
| LOGGER.error("Fatal system error", e); |
| } |
| else |
| { |
| _uncaughtExceptionHandler.uncaughtException(Thread.currentThread(), e); |
| } |
| } |
| |
| throw e; |
| } |
| catch (ExternalServiceTimeoutException e) |
| { |
| LOGGER.warn("External request timeout ", e); |
| sendError(e, servletResponse, HttpServletResponse.SC_GATEWAY_TIMEOUT); |
| } |
| catch (ExternalServiceException e) |
| { |
| LOGGER.warn("External request failed ", e); |
| sendError(e, servletResponse, HttpServletResponse.SC_BAD_GATEWAY); |
| } |
| catch (IOException | ServletException e) |
| { |
| LOGGER.debug("Exception in servlet '{}': ", requestURI, e); |
| throw e; |
| } |
| catch (ConnectionScopedRuntimeException e) |
| { |
| if (LOGGER.isDebugEnabled()) |
| { |
| LOGGER.debug("Exception in servlet '{}':", requestURI, e); |
| } |
| else |
| { |
| LOGGER.info("Exception in servlet '{}' : {}", requestURI, e.getMessage()); |
| } |
| throw e; |
| } |
| catch (RuntimeException e) |
| { |
| LOGGER.error("Unexpected exception in servlet '{}': ", requestURI, e); |
| throw e; |
| } |
| } |
| |
| @Override |
| public void destroy() |
| { |
| // noop |
| } |
| |
| private void sendError(final RuntimeException underlyingException, |
| final ServletResponse servletResponse, |
| final int responseCode) throws IOException |
| { |
| if (servletResponse instanceof HttpServletResponse && !servletResponse.isCommitted()) |
| { |
| ((HttpServletResponse) servletResponse).sendError(responseCode); |
| } |
| else |
| { |
| throw underlyingException; |
| } |
| } |
| } |