| // Copyright (C) 2009 The Android Open Source Project |
| // |
| // 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. |
| |
| package com.google.gerrit.httpd; |
| |
| import com.google.gerrit.server.RequestCleanup; |
| import com.google.gerrit.server.util.RequestContext; |
| import com.google.gerrit.server.util.ThreadLocalRequestContext; |
| import com.google.inject.Inject; |
| import com.google.inject.Module; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| import com.google.inject.servlet.ServletModule; |
| |
| 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; |
| |
| /** Executes any pending {@link RequestCleanup} at the end of a request. */ |
| @Singleton |
| public class RequestContextFilter implements Filter { |
| public static Module module() { |
| return new ServletModule() { |
| @Override |
| protected void configureServlets() { |
| filter("/*").through(RequestContextFilter.class); |
| } |
| }; |
| } |
| |
| private final Provider<RequestCleanup> cleanup; |
| private final Provider<HttpRequestContext> requestContext; |
| private final ThreadLocalRequestContext local; |
| |
| @Inject |
| RequestContextFilter(final Provider<RequestCleanup> r, |
| final Provider<HttpRequestContext> c, |
| final ThreadLocalRequestContext l) { |
| cleanup = r; |
| requestContext = c; |
| local = l; |
| } |
| |
| @Override |
| public void init(FilterConfig filterConfig) { |
| } |
| |
| @Override |
| public void destroy() { |
| } |
| |
| @Override |
| public void doFilter(final ServletRequest request, |
| final ServletResponse response, final FilterChain chain) |
| throws IOException, ServletException { |
| RequestContext old = local.setContext(requestContext.get()); |
| try { |
| try { |
| chain.doFilter(request, response); |
| } finally { |
| cleanup.get().run(); |
| } |
| } finally { |
| local.setContext(old); |
| } |
| } |
| } |