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// Copyright (C) 2010 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.sshd.commands;
import com.google.gerrit.reviewdb.Project;
import com.google.gerrit.reviewdb.ReviewDb;
import com.google.gerrit.server.config.WildProjectName;
import com.google.gerrit.server.project.ProjectCache;
import com.google.gerrit.server.project.ProjectControl;
import com.google.gerrit.server.project.ProjectState;
import com.google.gerrit.sshd.AdminCommand;
import com.google.gerrit.sshd.BaseCommand;
import com.google.gwtorm.client.OrmException;
import com.google.inject.Inject;
import org.apache.sshd.server.Environment;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.Option;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
@AdminCommand
final class AdminSetParent extends BaseCommand {
@Option(name = "--parent", aliases = {"-p"}, metaVar = "NAME", usage = "new parent project")
private ProjectControl newParent;
@Argument(index = 0, required = true, multiValued = true, metaVar = "NAME", usage = "projects to modify")
private List<ProjectControl> children = new ArrayList<ProjectControl>();
@Inject
private ReviewDb db;
@Inject
private ProjectCache projectCache;
@Inject
@WildProjectName
private Project.NameKey wildProject;
@Override
public void start(final Environment env) {
startThread(new CommandRunnable() {
@Override
public void run() throws Exception {
parseCommandLine();
updateParents();
}
});
}
private void updateParents() throws OrmException, UnloggedFailure {
final StringBuilder err = new StringBuilder();
final Set<Project.NameKey> grandParents = new HashSet<Project.NameKey>();
Project.NameKey newParentKey;
grandParents.add(wildProject);
if (newParent != null) {
newParentKey = newParent.getProject().getNameKey();
// Catalog all grandparents of the "parent", we want to
// catch a cycle in the parent pointers before it occurs.
//
Project.NameKey gp = newParent.getProject().getParent();
while (gp != null && grandParents.add(gp)) {
final ProjectState s = projectCache.get(gp);
if (s != null) {
gp = s.getProject().getParent();
} else {
break;
}
}
} else {
// If no parent was selected, set to NULL to use the default.
//
newParentKey = null;
}
for (final ProjectControl pc : children) {
final Project.NameKey key = pc.getProject().getNameKey();
final String name = pc.getProject().getName();
if (wildProject.equals(key)) {
// Don't allow the wild card project to have a parent.
//
err.append("error: Cannot set parent of '" + name + "'\n");
continue;
}
if (grandParents.contains(key) || key.equals(newParentKey)) {
// Try to avoid creating a cycle in the parent pointers.
//
err.append("error: Cycle exists between '" + name + "' and '"
+ (newParentKey != null ? newParentKey.get() : wildProject.get())
+ "'\n");
continue;
}
final Project child = db.projects().get(key);
if (child == null) {
// Race condition? Its in the cache, but not the database.
//
err.append("error: Project '" + name + "' not found\n");
continue;
}
child.setParent(newParentKey);
db.projects().update(Collections.singleton(child));
}
// Invalidate all projects in cache since inherited rights were changed.
//
projectCache.evictAll();
if (err.length() > 0) {
while (err.charAt(err.length() - 1) == '\n') {
err.setLength(err.length() - 1);
}
throw new UnloggedFailure(1, err.toString());
}
}
}
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