/*
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* Copyright 2013 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.wicket;
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import java.util.Date;
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import com.google.inject.Inject;
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import com.google.inject.Singleton;
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import javax.servlet.http.HttpServletRequest;
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import org.apache.wicket.protocol.http.IWebApplicationFactory;
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import org.apache.wicket.protocol.http.WebApplication;
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import org.apache.wicket.protocol.http.WicketFilter;
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import org.apache.wicket.util.string.Strings;
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import org.eclipse.jgit.lib.Repository;
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import org.eclipse.jgit.revwalk.RevCommit;
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import com.gitblit.IStoredSettings;
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import com.gitblit.Keys;
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import com.gitblit.manager.IProjectManager;
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import com.gitblit.manager.IRepositoryManager;
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import com.gitblit.manager.IRuntimeManager;
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import com.gitblit.models.ProjectModel;
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import com.gitblit.models.RepositoryModel;
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import com.gitblit.utils.JGitUtils;
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import com.gitblit.utils.StringUtils;
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/**
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*
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* Customization of the WicketFilter to allow smart browser-side caching of
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* some pages.
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*
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* @author James Moger
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*
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*/
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@Singleton
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public class GitblitWicketFilter extends WicketFilter {
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private IStoredSettings settings;
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private IRuntimeManager runtimeManager;
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private IRepositoryManager repositoryManager;
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private IProjectManager projectManager;
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private GitBlitWebApp webapp;
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@Inject
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public GitblitWicketFilter(
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IStoredSettings settings,
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IRuntimeManager runtimeManager,
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IRepositoryManager repositoryManager,
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IProjectManager projectManager,
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GitBlitWebApp webapp) {
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this.settings = settings;
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this.runtimeManager = runtimeManager;
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this.repositoryManager = repositoryManager;
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this.projectManager = projectManager;
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this.webapp = webapp;
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}
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@Override
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protected IWebApplicationFactory getApplicationFactory() {
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return new IWebApplicationFactory() {
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@Override
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public WebApplication createApplication(WicketFilter filter) {
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return webapp;
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}
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};
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}
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/**
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* Determines the last-modified date of the requested resource.
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*
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* @param servletRequest
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* @return The last modified time stamp
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*/
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@Override
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protected long getLastModified(final HttpServletRequest servletRequest) {
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final String pathInfo = getRelativePath(servletRequest);
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if (Strings.isEmpty(pathInfo)) {
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return -1;
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}
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long lastModified = super.getLastModified(servletRequest);
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if (lastModified > -1) {
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return lastModified;
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}
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// try to match request against registered CacheControl pages
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String [] paths = pathInfo.split("/");
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String page = paths[0];
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String repo = "";
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String commitId = "";
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if (paths.length >= 2) {
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repo = paths[1];
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}
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if (paths.length >= 3) {
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commitId = paths[2];
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}
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if (!StringUtils.isEmpty(servletRequest.getParameter("r"))) {
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repo = servletRequest.getParameter("r");
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}
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if (!StringUtils.isEmpty(servletRequest.getParameter("h"))) {
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commitId = servletRequest.getParameter("h");
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}
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repo = repo.replace("%2f", "/").replace("%2F", "/").replace(settings.getChar(Keys.web.forwardSlashCharacter, '/'), '/');
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GitBlitWebApp app = (GitBlitWebApp) getWebApplication();
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int expires = settings.getInteger(Keys.web.pageCacheExpires, 0);
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if (!StringUtils.isEmpty(page) && app.isCacheablePage(page) && expires > 0) {
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// page can be cached by the browser
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CacheControl cacheControl = app.getCacheControl(page);
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Date bootDate = runtimeManager.getBootDate();
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switch (cacheControl.value()) {
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case ACTIVITY:
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// returns the last activity date of the server
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Date activityDate = repositoryManager.getLastActivityDate();
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if (activityDate != null) {
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return activityDate.after(bootDate) ? activityDate.getTime() : bootDate.getTime();
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}
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return bootDate.getTime();
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case BOOT:
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// return the boot date of the server
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return bootDate.getTime();
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case PROJECT:
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// return the latest change date for the project OR the boot date
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ProjectModel project = projectManager.getProjectModel(StringUtils.getRootPath(repo));
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if (project != null) {
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return project.lastChange.after(bootDate) ? project.lastChange.getTime() : bootDate.getTime();
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}
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break;
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case REPOSITORY:
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// return the lastest change date for the repository OR the boot
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// date, whichever is latest
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RepositoryModel repository = repositoryManager.getRepositoryModel(repo);
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if (repository != null && repository.lastChange != null) {
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return repository.lastChange.after(bootDate) ? repository.lastChange.getTime() : bootDate.getTime();
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}
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break;
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case COMMIT:
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// get the date of the specified commit
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if (StringUtils.isEmpty(commitId)) {
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// no commit id, use boot date
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return bootDate.getTime();
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} else {
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// last modified date is the commit date
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Repository r = null;
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try {
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// return the timestamp of the associated commit
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r = repositoryManager.getRepository(repo);
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if (r != null) {
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RevCommit commit = JGitUtils.getCommit(r, commitId);
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if (commit != null) {
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Date date = JGitUtils.getCommitDate(commit);
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return date.after(bootDate) ? date.getTime() : bootDate.getTime();
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}
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}
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} finally {
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if (r != null) {
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r.close();
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}
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}
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}
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break;
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default:
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break;
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}
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}
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return -1;
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}
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}
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