| // Copyright (C) 2013 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.googlesource.gerrit.plugins.javamelody; |
| |
| import com.google.gerrit.httpd.AllRequestFilter; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.io.IOException; |
| import java.util.StringJoiner; |
| 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 net.bull.javamelody.MonitoringFilter; |
| |
| @Singleton |
| class GerritMonitoringFilter extends AllRequestFilter { |
| private final JavamelodyFilter monitoring; |
| private final CapabilityChecker capabilityChecker; |
| |
| @Inject |
| GerritMonitoringFilter(JavamelodyFilter monitoring, CapabilityChecker capabilityChecker) { |
| this.monitoring = monitoring; |
| this.capabilityChecker = capabilityChecker; |
| } |
| |
| @Override |
| public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) |
| throws IOException, ServletException { |
| if (!(request instanceof HttpServletRequest) || !(response instanceof HttpServletResponse)) { |
| chain.doFilter(request, response); |
| return; |
| } |
| |
| HttpServletResponse httpResponse = (HttpServletResponse) response; |
| HttpServletRequest httpRequest = (HttpServletRequest) request; |
| |
| if (canMonitor(httpRequest)) { |
| monitoring.doFilter(request, response, chain); |
| } else { |
| httpResponse.sendError(HttpServletResponse.SC_FORBIDDEN, "Forbidden access"); |
| } |
| } |
| |
| @Override |
| public void init(FilterConfig config) throws ServletException { |
| monitoring.init(config); |
| } |
| |
| @Override |
| public void destroy() { |
| monitoring.destroy(); |
| } |
| |
| private boolean canMonitor(HttpServletRequest httpRequest) { |
| if (httpRequest.getRequestURI().equals(monitoring.getJavamelodyUrl(httpRequest))) { |
| return capabilityChecker.canMonitor(); |
| } |
| return true; |
| } |
| |
| static class JavamelodyFilter extends MonitoringFilter { |
| private static String HTTP_TRANSFORM_PATTERN = "http-transform-pattern"; |
| private static String GLOBAL_HTTP_TRANSFORM_PATTERN = "javamelody." + HTTP_TRANSFORM_PATTERN; |
| static String GERRIT_GROUPING = |
| new StringJoiner("|") |
| .add("[0-9a-f]{64}") // Long SHA for LFS |
| .add("[0-9a-f]{40}") // SHA-1 |
| .add("[0-9A-F]{32}") // GWT cache ID |
| .add("(?<=files/)[^/]+") // review files part |
| .add("(?<=/projects/)[^/]+") // project name |
| .add("(?<=/accounts/)[^/]+") // account id |
| .add("(.+)(?=/git-upload-pack)") // Git fetch/clone |
| .add("(.+)(?=/git-receive-pack)") // Git push |
| .add("(.+)(?=/info/)") // Git and LFS operations |
| .add("\\d+") // various ids e.g. change id |
| .toString(); |
| |
| @Override |
| public void init(FilterConfig config) throws ServletException { |
| if (isHttpTransformPatternrUndefined(config)) { |
| System.setProperty(GLOBAL_HTTP_TRANSFORM_PATTERN, GERRIT_GROUPING); |
| } |
| super.init(config); |
| } |
| |
| public String getJavamelodyUrl(HttpServletRequest httpRequest) { |
| return getMonitoringUrl(httpRequest); |
| } |
| |
| private boolean isHttpTransformPatternrUndefined(FilterConfig config) { |
| return System.getProperty(GLOBAL_HTTP_TRANSFORM_PATTERN) == null |
| && config.getServletContext().getInitParameter(GLOBAL_HTTP_TRANSFORM_PATTERN) == null |
| && config.getInitParameter(HTTP_TRANSFORM_PATTERN) == null; |
| } |
| } |
| } |