blob: 8b8a2525ff30c912db6ae3a232fffe81c7e1bd36 [file] [log] [blame]
// 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 static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Sets;
import com.google.gitiles.GitilesRequestFailureException.FailureReason;
import com.google.gson.reflect.TypeToken;
import com.google.template.soy.data.SoyListData;
import com.google.template.soy.data.SoyMapData;
import com.google.template.soy.data.restricted.NullData;
import java.io.IOException;
import java.io.Writer;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import javax.annotation.Nullable;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
/** Serves the top level index page for a Gitiles host. */
public class HostIndexServlet extends BaseServlet {
private static final long serialVersionUID = 1L;
protected final GitilesUrls urls;
public HostIndexServlet(
GitilesAccess.Factory accessFactory, Renderer renderer, GitilesUrls urls) {
super(renderer, accessFactory);
this.urls = checkNotNull(urls, "urls");
}
private Map<String, RepositoryDescription> list(
HttpServletRequest req, String prefix, Set<String> branches) throws IOException {
Map<String, RepositoryDescription> descs;
try {
descs = getAccess(req).listRepositories(prefix, branches);
} catch (ServiceNotEnabledException e) {
throw new GitilesRequestFailureException(FailureReason.SERVICE_NOT_ENABLED, e);
} catch (ServiceNotAuthorizedException e) {
throw new GitilesRequestFailureException(FailureReason.NOT_AUTHORIZED, e);
}
if (prefix != null && descs.isEmpty()) {
throw new GitilesRequestFailureException(FailureReason.REPOSITORY_NOT_FOUND);
}
return descs;
}
private SoyMapData toSoyMapData(
RepositoryDescription desc, @Nullable String prefix, GitilesView view) {
return new SoyMapData(
"name", stripPrefix(prefix, desc.name),
"description", Strings.nullToEmpty(desc.description),
"url", GitilesView.repositoryIndex().copyFrom(view).setRepositoryName(desc.name).toUrl());
}
@Override
protected void doHead(HttpServletRequest req, HttpServletResponse res) throws IOException {
Optional<FormatType> format = getFormat(req);
if (!format.isPresent()) {
throw new GitilesRequestFailureException(FailureReason.UNSUPPORTED_RESPONSE_FORMAT);
}
GitilesView view = ViewFilter.getView(req);
String prefix = view.getRepositoryPrefix();
if (prefix != null) {
Map<String, RepositoryDescription> descs = list(req, prefix, Collections.emptySet());
if (descs == null) {
return;
}
}
switch (format.get()) {
case HTML:
case JSON:
case TEXT:
res.setStatus(HttpServletResponse.SC_OK);
res.setContentType(format.get().getMimeType());
break;
case DEFAULT:
default:
throw new GitilesRequestFailureException(FailureReason.UNSUPPORTED_RESPONSE_FORMAT);
}
}
@Override
protected void doGetHtml(HttpServletRequest req, HttpServletResponse res) throws IOException {
GitilesView view = ViewFilter.getView(req);
String prefix = view.getRepositoryPrefix();
Map<String, RepositoryDescription> descs = list(req, prefix, parseShowBranch(req));
if (descs == null) {
return;
}
SoyListData repos = new SoyListData();
for (RepositoryDescription desc : descs.values()) {
if (prefix == null || desc.name.startsWith(prefix)) {
repos.add(toSoyMapData(desc, prefix, view));
}
}
String hostName = urls.getHostName(req);
List<Map<String, String>> breadcrumbs = null;
if (prefix != null) {
hostName = hostName + '/' + prefix;
breadcrumbs = view.getBreadcrumbs();
}
renderHtml(
req,
res,
"gitiles.hostIndex",
ImmutableMap.of(
"hostName",
hostName,
"breadcrumbs",
breadcrumbs != null ? new SoyListData(breadcrumbs) : NullData.INSTANCE,
"prefix",
prefix != null ? prefix + '/' : "",
"repositories",
repos));
}
@Override
protected void doGetText(HttpServletRequest req, HttpServletResponse res) throws IOException {
String prefix = ViewFilter.getView(req).getRepositoryPrefix();
Set<String> branches = parseShowBranch(req);
Map<String, RepositoryDescription> descs = list(req, prefix, branches);
if (descs == null) {
return;
}
try (Writer writer = startRenderText(req, res)) {
for (RepositoryDescription repo : descs.values()) {
for (String name : branches) {
String ref = repo.branches.get(name);
if (ref == null) {
// Print stub (forty '-' symbols)
ref = "----------------------------------------";
}
writer.write(ref);
writer.write(' ');
}
writer.write(GitilesUrls.escapeName(stripPrefix(prefix, repo.name)));
writer.write('\n');
}
}
}
@Override
protected void doGetJson(HttpServletRequest req, HttpServletResponse res) throws IOException {
String prefix = ViewFilter.getView(req).getRepositoryPrefix();
Map<String, RepositoryDescription> descs = list(req, prefix, parseShowBranch(req));
if (descs == null) {
return;
}
if (prefix != null) {
Map<String, RepositoryDescription> r = new LinkedHashMap<>();
for (Map.Entry<String, RepositoryDescription> e : descs.entrySet()) {
r.put(stripPrefix(prefix, e.getKey()), e.getValue());
}
descs = r;
}
renderJson(req, res, descs, new TypeToken<Map<String, RepositoryDescription>>() {}.getType());
}
private static String stripPrefix(@Nullable String prefix, String name) {
if (prefix != null && name.startsWith(prefix)) {
return name.substring(prefix.length() + 1);
}
return name;
}
private static Set<String> parseShowBranch(HttpServletRequest req) {
// Roughly match Gerrit Code Review's /projects/ API by supporting
// both show-branch and b as query parameters.
Set<String> branches = Sets.newLinkedHashSet();
String[] values = req.getParameterValues("show-branch");
if (values != null) {
Collections.addAll(branches, values);
}
values = req.getParameterValues("b");
if (values != null) {
Collections.addAll(branches, values);
}
return branches;
}
}