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com.google.gerrit.server.project.ListTags Maven / Gradle / Ivy
// Copyright (C) 2014 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.google.gerrit.server.project;
import com.google.common.collect.ImmutableMap;
import com.google.gerrit.extensions.api.projects.ProjectApi.ListRefsRequest;
import com.google.gerrit.extensions.api.projects.TagInfo;
import com.google.gerrit.extensions.common.WebLinkInfo;
import com.google.gerrit.extensions.restapi.BadRequestException;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestReadView;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.server.CommonConverters;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.WebLinks;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.git.VisibleRefFilter;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.RefPermission;
import com.google.inject.Inject;
import com.google.inject.Provider;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevObject;
import org.eclipse.jgit.revwalk.RevTag;
import org.eclipse.jgit.revwalk.RevWalk;
import org.kohsuke.args4j.Option;
public class ListTags implements RestReadView {
private final GitRepositoryManager repoManager;
private final PermissionBackend permissionBackend;
private final Provider user;
private final VisibleRefFilter.Factory refFilterFactory;
private final WebLinks links;
@Option(
name = "--limit",
aliases = {"-n"},
metaVar = "CNT",
usage = "maximum number of tags to list"
)
public void setLimit(int limit) {
this.limit = limit;
}
@Option(
name = "--start",
aliases = {"-S", "-s"},
metaVar = "CNT",
usage = "number of tags to skip"
)
public void setStart(int start) {
this.start = start;
}
@Option(
name = "--match",
aliases = {"-m"},
metaVar = "MATCH",
usage = "match tags substring"
)
public void setMatchSubstring(String matchSubstring) {
this.matchSubstring = matchSubstring;
}
@Option(
name = "--regex",
aliases = {"-r"},
metaVar = "REGEX",
usage = "match tags regex"
)
public void setMatchRegex(String matchRegex) {
this.matchRegex = matchRegex;
}
private int limit;
private int start;
private String matchSubstring;
private String matchRegex;
@Inject
public ListTags(
GitRepositoryManager repoManager,
PermissionBackend permissionBackend,
Provider user,
VisibleRefFilter.Factory refFilterFactory,
WebLinks webLinks) {
this.repoManager = repoManager;
this.permissionBackend = permissionBackend;
this.user = user;
this.refFilterFactory = refFilterFactory;
this.links = webLinks;
}
public ListTags request(ListRefsRequest request) {
this.setLimit(request.getLimit());
this.setStart(request.getStart());
this.setMatchSubstring(request.getSubstring());
this.setMatchRegex(request.getRegex());
return this;
}
@Override
public List apply(ProjectResource resource)
throws IOException, ResourceNotFoundException, BadRequestException {
List tags = new ArrayList<>();
PermissionBackend.ForProject perm = permissionBackend.user(user).project(resource.getNameKey());
try (Repository repo = getRepository(resource.getNameKey());
RevWalk rw = new RevWalk(repo)) {
Map all =
visibleTags(
resource.getProjectState(), repo, repo.getRefDatabase().getRefs(Constants.R_TAGS));
for (Ref ref : all.values()) {
tags.add(createTagInfo(perm.ref(ref.getName()), ref, rw, resource.getNameKey(), links));
}
}
Collections.sort(
tags,
new Comparator() {
@Override
public int compare(TagInfo a, TagInfo b) {
return a.ref.compareTo(b.ref);
}
});
return new RefFilter(Constants.R_TAGS)
.start(start)
.limit(limit)
.subString(matchSubstring)
.regex(matchRegex)
.filter(tags);
}
public TagInfo get(ProjectResource resource, IdString id)
throws ResourceNotFoundException, IOException {
try (Repository repo = getRepository(resource.getNameKey());
RevWalk rw = new RevWalk(repo)) {
String tagName = id.get();
if (!tagName.startsWith(Constants.R_TAGS)) {
tagName = Constants.R_TAGS + tagName;
}
Ref ref = repo.getRefDatabase().exactRef(tagName);
if (ref != null
&& !visibleTags(resource.getProjectState(), repo, ImmutableMap.of(ref.getName(), ref))
.isEmpty()) {
return createTagInfo(
permissionBackend
.user(resource.getUser())
.project(resource.getNameKey())
.ref(ref.getName()),
ref,
rw,
resource.getNameKey(),
links);
}
}
throw new ResourceNotFoundException(id);
}
public static TagInfo createTagInfo(
PermissionBackend.ForRef perm,
Ref ref,
RevWalk rw,
Project.NameKey projectName,
WebLinks links)
throws MissingObjectException, IOException {
RevObject object = rw.parseAny(ref.getObjectId());
Boolean canDelete = perm.testOrFalse(RefPermission.DELETE) ? true : null;
List webLinks = links.getTagLinks(projectName.get(), ref.getName());
if (object instanceof RevTag) {
// Annotated or signed tag
RevTag tag = (RevTag) object;
PersonIdent tagger = tag.getTaggerIdent();
return new TagInfo(
ref.getName(),
tag.getName(),
tag.getObject().getName(),
tag.getFullMessage().trim(),
tagger != null ? CommonConverters.toGitPerson(tag.getTaggerIdent()) : null,
canDelete,
webLinks.isEmpty() ? null : webLinks);
}
// Lightweight tag
return new TagInfo(
ref.getName(),
ref.getObjectId().getName(),
canDelete,
webLinks.isEmpty() ? null : webLinks);
}
private Repository getRepository(Project.NameKey project)
throws ResourceNotFoundException, IOException {
try {
return repoManager.openRepository(project);
} catch (RepositoryNotFoundException noGitRepository) {
throw new ResourceNotFoundException();
}
}
private Map visibleTags(ProjectState state, Repository repo, Map tags) {
return refFilterFactory.create(state, repo).setShowMetadata(false).filter(tags, true);
}
}
