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- /*
- * Copyright 2013 gitblit.com.
- *
- * 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.gitblit.wicket;
-
- import java.util.Date;
-
- import javax.servlet.http.HttpServletRequest;
-
- import org.apache.wicket.protocol.http.WicketFilter;
- import org.apache.wicket.util.string.Strings;
- import org.eclipse.jgit.lib.Repository;
- import org.eclipse.jgit.revwalk.RevCommit;
-
- import com.gitblit.GitBlit;
- import com.gitblit.Keys;
- import com.gitblit.models.ProjectModel;
- import com.gitblit.models.RepositoryModel;
- import com.gitblit.utils.JGitUtils;
- import com.gitblit.utils.StringUtils;
-
- /**
- *
- * Customization of the WicketFilter to allow smart browser-side caching of
- * some pages.
- *
- * @author James Moger
- *
- */
- public class GitblitWicketFilter extends WicketFilter {
-
- /**
- * Determines the last-modified date of the requested resource.
- *
- * @param servletRequest
- * @return The last modified time stamp
- */
- protected long getLastModified(final HttpServletRequest servletRequest) {
- final String pathInfo = getRelativePath(servletRequest);
- if (Strings.isEmpty(pathInfo))
- return -1;
- long lastModified = super.getLastModified(servletRequest);
- if (lastModified > -1) {
- return lastModified;
- }
-
- // try to match request against registered CacheControl pages
- String [] paths = pathInfo.split("/");
-
- String page = paths[0];
- String repo = "";
- String commitId = "";
- if (paths.length >= 2) {
- repo = paths[1];
- }
- if (paths.length >= 3) {
- commitId = paths[2];
- }
-
- if (!StringUtils.isEmpty(servletRequest.getParameter("r"))) {
- repo = servletRequest.getParameter("r");
- }
- if (!StringUtils.isEmpty(servletRequest.getParameter("h"))) {
- commitId = servletRequest.getParameter("h");
- }
-
- repo = repo.replace("%2f", "/").replace("%2F", "/").replace(GitBlit.getChar(Keys.web.forwardSlashCharacter, '/'), '/');
-
- GitBlitWebApp app = (GitBlitWebApp) getWebApplication();
- int expires = GitBlit.getInteger(Keys.web.pageCacheExpires, 0);
- if (!StringUtils.isEmpty(page) && app.isCacheablePage(page) && expires > 0) {
- // page can be cached by the browser
- CacheControl cacheControl = app.getCacheControl(page);
- Date bootDate = GitBlit.getBootDate();
- switch (cacheControl.value()) {
- case ACTIVITY:
- // returns the last activity date of the server
- Date activityDate = GitBlit.getLastActivityDate();
- if (activityDate != null) {
- return activityDate.after(bootDate) ? activityDate.getTime() : bootDate.getTime();
- }
- return bootDate.getTime();
- case BOOT:
- // return the boot date of the server
- return bootDate.getTime();
- case PROJECT:
- // return the latest change date for the project OR the boot date
- ProjectModel project = GitBlit.self().getProjectModel(StringUtils.getRootPath(repo));
- if (project != null) {
- return project.lastChange.after(bootDate) ? project.lastChange.getTime() : bootDate.getTime();
- }
- break;
- case REPOSITORY:
- // return the lastest change date for the repository OR the boot
- // date, whichever is latest
- RepositoryModel repository = GitBlit.self().getRepositoryModel(repo);
- if (repository != null && repository.lastChange != null) {
- return repository.lastChange.after(bootDate) ? repository.lastChange.getTime() : bootDate.getTime();
- }
- break;
- case COMMIT:
- // get the date of the specified commit
- if (StringUtils.isEmpty(commitId)) {
- // no commit id, use boot date
- return bootDate.getTime();
- } else {
- // last modified date is the commit date
- Repository r = null;
- try {
- // return the timestamp of the associated commit
- r = GitBlit.self().getRepository(repo);
- if (r != null) {
- RevCommit commit = JGitUtils.getCommit(r, commitId);
- if (commit != null) {
- Date date = JGitUtils.getCommitDate(commit);
- return date.after(bootDate) ? date.getTime() : bootDate.getTime();
- }
- }
- } finally {
- if (r != null) {
- r.close();
- }
- }
- }
- break;
- default:
- break;
- }
- }
-
- return -1;
- }
- }
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