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// Copyright (C) 2012 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.restapi.project;
import static com.google.gerrit.entities.RefNames.REFS_DASHBOARDS;
import com.google.common.base.Joiner;
import com.google.common.base.MoreObjects;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.common.collect.Lists;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.entities.Project;
import com.google.gerrit.extensions.api.projects.DashboardInfo;
import com.google.gerrit.extensions.api.projects.DashboardSectionInfo;
import com.google.gerrit.extensions.registration.DynamicMap;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.extensions.restapi.ChildCollection;
import com.google.gerrit.extensions.restapi.IdString;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestApiException;
import com.google.gerrit.extensions.restapi.RestView;
import com.google.gerrit.extensions.restapi.Url;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.UrlEncoded;
import com.google.gerrit.server.git.GitRepositoryManager;
import com.google.gerrit.server.permissions.PermissionBackend;
import com.google.gerrit.server.permissions.PermissionBackendException;
import com.google.gerrit.server.permissions.RefPermission;
import com.google.gerrit.server.project.DashboardResource;
import com.google.gerrit.server.project.ProjectResource;
import com.google.gerrit.server.project.ProjectState;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.List;
import org.eclipse.jgit.errors.AmbiguousObjectException;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.BlobBasedConfig;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
@Singleton
public class DashboardsCollection implements ChildCollection<ProjectResource, DashboardResource> {
public static final String DEFAULT_DASHBOARD_NAME = "default";
private final GitRepositoryManager gitManager;
private final DynamicMap<RestView<DashboardResource>> views;
private final Provider<ListDashboards> list;
private final PermissionBackend permissionBackend;
@Inject
DashboardsCollection(
GitRepositoryManager gitManager,
DynamicMap<RestView<DashboardResource>> views,
Provider<ListDashboards> list,
PermissionBackend permissionBackend) {
this.gitManager = gitManager;
this.views = views;
this.list = list;
this.permissionBackend = permissionBackend;
}
public static boolean isDefaultDashboard(@Nullable String id) {
return DEFAULT_DASHBOARD_NAME.equals(id);
}
public static boolean isDefaultDashboard(@Nullable IdString id) {
return id != null && isDefaultDashboard(id.toString());
}
@Override
public RestView<ProjectResource> list() throws ResourceNotFoundException {
return list.get();
}
@Override
public DashboardResource parse(ProjectResource parent, IdString id)
throws RestApiException, IOException, ConfigInvalidException, PermissionBackendException {
parent.getProjectState().checkStatePermitsRead();
if (isDefaultDashboard(id)) {
return DashboardResource.projectDefault(parent.getProjectState(), parent.getUser());
}
DashboardInfo info;
try {
info = newDashboardInfo(id.get());
} catch (InvalidDashboardId e) {
throw new ResourceNotFoundException(id, e);
}
for (ProjectState ps : parent.getProjectState().tree()) {
try {
return parse(ps, parent.getProjectState(), parent.getUser(), info);
} catch (AmbiguousObjectException | ConfigInvalidException | IncorrectObjectTypeException e) {
throw new ResourceNotFoundException(id, e);
} catch (ResourceNotFoundException e) {
continue;
}
}
throw new ResourceNotFoundException(id);
}
public static String normalizeDashboardRef(String ref) {
if (!ref.startsWith(REFS_DASHBOARDS)) {
return REFS_DASHBOARDS + ref;
}
return ref;
}
private DashboardResource parse(
ProjectState parent, ProjectState current, CurrentUser user, DashboardInfo info)
throws ResourceNotFoundException, IOException, AmbiguousObjectException,
IncorrectObjectTypeException, ConfigInvalidException, PermissionBackendException,
ResourceConflictException {
String ref = normalizeDashboardRef(info.ref);
try {
permissionBackend.user(user).project(parent.getNameKey()).ref(ref).check(RefPermission.READ);
} catch (AuthException e) {
// Don't leak the project's existence
throw new ResourceNotFoundException(info.id, e);
}
if (!Repository.isValidRefName(ref)) {
throw new ResourceNotFoundException(info.id);
}
current.checkStatePermitsRead();
try (Repository git = gitManager.openRepository(parent.getNameKey())) {
ObjectId objId = git.resolve(ref + ":" + info.path);
if (objId == null) {
throw new ResourceNotFoundException(info.id);
}
BlobBasedConfig cfg = new BlobBasedConfig(null, git, objId);
return new DashboardResource(current, user, ref, info.path, cfg, false);
} catch (RepositoryNotFoundException e) {
throw new ResourceNotFoundException(info.id, e);
}
}
@Override
public DynamicMap<RestView<DashboardResource>> views() {
return views;
}
public static DashboardInfo newDashboardInfo(String ref, String path) {
DashboardInfo info = new DashboardInfo();
info.ref = ref;
info.path = path;
info.id = Joiner.on(':').join(Url.encode(ref), Url.encode(path));
return info;
}
public static class InvalidDashboardId extends Exception {
private static final long serialVersionUID = 1L;
public InvalidDashboardId(String id) {
super(id);
}
}
static DashboardInfo newDashboardInfo(String id) throws InvalidDashboardId {
DashboardInfo info = new DashboardInfo();
List<String> parts = Lists.newArrayList(Splitter.on(':').limit(2).split(id));
if (parts.size() != 2) {
throw new InvalidDashboardId(id);
}
info.id = id;
info.ref = parts.get(0);
info.path = parts.get(1);
return info;
}
static DashboardInfo parse(
Project definingProject,
String refName,
String path,
Config config,
String project,
boolean setDefault) {
DashboardInfo info = newDashboardInfo(refName, path);
info.project = project;
info.definingProject = definingProject.getName();
String title = config.getString("dashboard", null, "title");
info.title = replace(project, title == null ? info.path : title);
info.description = replace(project, config.getString("dashboard", null, "description"));
info.foreach = config.getString("dashboard", null, "foreach");
if (setDefault) {
String id = refName + ":" + path;
info.isDefault = id.equals(defaultOf(definingProject)) ? true : null;
}
UrlEncoded u = new UrlEncoded("/dashboard/");
u.put("title", MoreObjects.firstNonNull(info.title, info.path));
if (info.foreach != null) {
u.put("foreach", replace(project, info.foreach));
}
for (String name : config.getSubsections("section")) {
DashboardSectionInfo s = new DashboardSectionInfo();
s.name = name;
s.query = config.getString("section", name, "query");
u.put(s.name, replace(project, s.query));
info.sections.add(s);
}
info.url = u.toString().replace("%3A", ":");
return info;
}
private static String replace(String project, String input) {
return input == null ? input : input.replace("${project}", project);
}
private static String defaultOf(Project proj) {
final String defaultId =
MoreObjects.firstNonNull(
proj.getLocalDefaultDashboard(), Strings.nullToEmpty(proj.getDefaultDashboard()));
if (defaultId.startsWith(REFS_DASHBOARDS)) {
return defaultId.substring(REFS_DASHBOARDS.length());
}
return defaultId;
}
}