// Copyright 2012 Google Inc. All Rights Reserved.

//

// 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.gitiles;

import com.google.gitiles.blame.cache.BlameCache;

import java.util.Enumeration;

import javax.annotation.Nullable;

import javax.servlet.Filter;

import javax.servlet.FilterConfig;

import javax.servlet.ServletConfig;

import javax.servlet.ServletContext;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import org.eclipse.jgit.http.server.glue.MetaServlet;

import org.eclipse.jgit.lib.Config;

import org.eclipse.jgit.transport.resolver.RepositoryResolver;

/**

* Servlet to serve Gitiles.

*

* <p>This servlet can either be constructed manually with its dependencies, or configured to use

* default implementations for the Gitiles interfaces. To configure the defaults, you must provide a

* single init parameter "configPath", which is the path to a git config file containing additional

* configuration.

*/

public class GitilesServlet extends MetaServlet {

private static final long serialVersionUID = 1L;

/** The prefix from which static resources are served. */

public static final String STATIC_PREFIX = "/+static/";

public GitilesServlet(

Config config,

@Nullable Renderer renderer,

@Nullable GitilesUrls urls,

@Nullable GitilesAccess.Factory accessFactory,

@Nullable RepositoryResolver<HttpServletRequest> resolver,

@Nullable VisibilityCache visibilityCache,

@Nullable TimeCache timeCache,

@Nullable BlameCache blameCache,

@Nullable GitwebRedirectFilter gitwebRedirect,

BranchRedirect branchRedirect) {

this(

config,

renderer,

urls,

accessFactory,

resolver,

visibilityCache,

timeCache,

blameCache,

gitwebRedirect,

branchRedirect,

null);

}

public GitilesServlet(

Config config,

@Nullable Renderer renderer,

@Nullable GitilesUrls urls,

@Nullable GitilesAccess.Factory accessFactory,

@Nullable RepositoryResolver<HttpServletRequest> resolver,

@Nullable VisibilityCache visibilityCache,

@Nullable TimeCache timeCache,

@Nullable BlameCache blameCache,

@Nullable GitwebRedirectFilter gitwebRedirect,

BranchRedirect branchRedirect,

@Nullable Filter errorHandler) {

super(

new GitilesFilter(

config,

renderer,

urls,

accessFactory,

resolver,

visibilityCache,

timeCache,

blameCache,

gitwebRedirect,

branchRedirect,

errorHandler));

}

public GitilesServlet() {

super(new GitilesFilter());

}

@Override

protected GitilesFilter getDelegateFilter() {

return (GitilesFilter) super.getDelegateFilter();

}

@Override

public void init(final ServletConfig config) throws ServletException {

getDelegateFilter()

.init(

new FilterConfig() {

@Override

public String getFilterName() {

return getDelegateFilter().getClass().getName();

}

@Override

public String getInitParameter(String name) {

return config.getInitParameter(name);

}

@SuppressWarnings("rawtypes")

@Override

public Enumeration getInitParameterNames() {

return config.getInitParameterNames();

}

@Override

public ServletContext getServletContext() {

return config.getServletContext();

}

});

}

/**

* Add a custom filter for a view.

*

* <p>Must be called before initializing the servlet.

*

* @param view view type.

* @param filter filter.

*/

public void addFilter(GitilesView.Type view, Filter filter) {

getDelegateFilter().addFilter(view, filter);

}

/**

* Set a custom handler for a view.

*

* <p>Must be called before initializing the servlet.

*

* @param view view type.

* @param handler handler.

*/

public void setHandler(GitilesView.Type view, HttpServlet handler) {

getDelegateFilter().setHandler(view, handler);

}

public BaseServlet getDefaultHandler(GitilesView.Type view) {

return getDelegateFilter().getDefaultHandler(view);

}

}