// Copyright (C) 2011 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.extensions.api.changes.AddReviewerInput;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gerrit.reviewdb.client.PatchSet;
import com.google.gerrit.reviewdb.client.RevId;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.change.ChangeResource;
import com.google.gerrit.server.change.ChangesCollection;
import com.google.gerrit.server.change.DeleteReviewer;
import com.google.gerrit.server.change.PostReviewers;
import com.google.gerrit.server.change.ReviewerResource;
import com.google.gerrit.server.project.ChangeControl;
import com.google.gerrit.server.project.NoSuchChangeException;
import com.google.gerrit.server.project.ProjectControl;
import com.google.gerrit.sshd.CommandMetaData;
import com.google.gerrit.sshd.SshCommand;
import com.google.gwtorm.server.OrmException;
import com.google.gwtorm.server.ResultSet;
import com.google.inject.Inject;
import com.google.inject.Provider;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.Option;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
@CommandMetaData(name = "set-reviewers", description = "Add or remove reviewers on a change")
public class SetReviewersCommand extends SshCommand {
private static final Logger log =
LoggerFactory.getLogger(SetReviewersCommand.class);
@Option(name = "--project", aliases = "-p", usage = "project containing the change")
private ProjectControl projectControl;
@Option(name = "--add", aliases = {"-a"}, metaVar = "REVIEWER", usage = "user or group that should be added as reviewer")
private List<String> toAdd = new ArrayList<>();
@Option(name = "--remove", aliases = {"-r"}, metaVar = "REVIEWER", usage = "user that should be removed from the reviewer list")
void optionRemove(Account.Id who) {
toRemove.add(who);
}
@Argument(index = 0, required = true, multiValued = true, metaVar = "COMMIT", usage = "changes to modify")
void addChange(String token) {
try {
changes.addAll(parseChangeId(token));
} catch (UnloggedFailure e) {
throw new IllegalArgumentException(e.getMessage(), e);
} catch (OrmException e) {
throw new IllegalArgumentException("database is down", e);
}
}
@Inject
private ReviewDb db;
@Inject
private ReviewerResource.Factory reviewerFactory;
@Inject
private Provider<PostReviewers> postReviewersProvider;
@Inject
private Provider<DeleteReviewer> deleteReviewerProvider;
@Inject
private ChangeControl.Factory changeControlFactory;
@Inject
private ChangesCollection changesCollection;
private Set<Account.Id> toRemove = new HashSet<>();
private Set<Change.Id> changes = new HashSet<>();
@Override
protected void run() throws UnloggedFailure {
boolean ok = true;
for (Change.Id changeId : changes) {
try {
ok &= modifyOne(changeId);
} catch (Exception err) {
ok = false;
log.error("Error updating reviewers on change " + changeId, err);
writeError("fatal", "internal error while updating " + changeId);
}
}
if (!ok) {
throw error("fatal: one or more updates failed; review output above");
}
}
private boolean modifyOne(Change.Id changeId) throws Exception {
ChangeResource changeRsrc = changesCollection.parse(changeId);
boolean ok = true;
// Remove reviewers
//
DeleteReviewer delete = deleteReviewerProvider.get();
for (Account.Id reviewer : toRemove) {
ReviewerResource rsrc = reviewerFactory.create(changeRsrc, reviewer);
String error = null;
try {
delete.apply(rsrc, new DeleteReviewer.Input());
} catch (ResourceNotFoundException e) {
error = String.format("could not remove %s: not found", reviewer);
} catch (Exception e) {
error = String.format("could not remove %s: %s",
reviewer, e.getMessage());
}
if (error != null) {
ok = false;
writeError("error", error);
}
}
// Add reviewers
//
PostReviewers post = postReviewersProvider.get();
for (String reviewer : toAdd) {
AddReviewerInput input = new AddReviewerInput();
input.reviewer = reviewer;
input.confirmed = true;
String error;
try {
error = post.apply(changeRsrc, input).error;
} catch (Exception e) {
error = String.format("could not add %s: %s", reviewer, e.getMessage());
}
if (error != null) {
ok = false;
writeError("error", error);
}
}
return ok;
}
private Set<Change.Id> parseChangeId(String idstr)
throws UnloggedFailure, OrmException {
Set<Change.Id> matched = new HashSet<>(4);
boolean isCommit = idstr.matches("^([0-9a-fA-F]{4," + RevId.LEN + "})$");
// By newer style changeKey?
//
boolean changeKeyParses = false;
if (idstr.matches("^I[0-9a-fA-F]*$")) {
Change.Key key;
try {
key = Change.Key.parse(idstr);
changeKeyParses = true;
} catch (IllegalArgumentException e) {
key = null;
changeKeyParses = false;
}
if (changeKeyParses) {
for (Change change : db.changes().byKeyRange(key, key.max())) {
matchChange(matched, change);
}
}
}
// By commit?
//
if (isCommit) {
RevId id = new RevId(idstr);
ResultSet<PatchSet> patches;
if (id.isComplete()) {
patches = db.patchSets().byRevision(id);
} else {
patches = db.patchSets().byRevisionRange(id, id.max());
}
for (PatchSet ps : patches) {
matchChange(matched, ps.getId().getParentKey());
}
}
// By older style changeId?
//
boolean changeIdParses = false;
if (idstr.matches("^[1-9][0-9]*$")) {
Change.Id id;
try {
id = Change.Id.parse(idstr);
changeIdParses = true;
} catch (IllegalArgumentException e) {
id = null;
changeIdParses = false;
}
if (changeIdParses) {
matchChange(matched, id);
}
}
if (!changeKeyParses && !isCommit && !changeIdParses) {
throw error("\"" + idstr + "\" is not a valid change");
}
switch (matched.size()) {
case 0:
throw error("\"" + idstr + "\" no such change");
case 1:
return matched;
default:
throw error("\"" + idstr + "\" matches multiple changes");
}
}
private void matchChange(Set<Change.Id> matched, Change.Id changeId) {
if (changeId != null && !matched.contains(changeId)) {
try {
matchChange(matched, db.changes().get(changeId));
} catch (OrmException e) {
log.warn("Error reading change " + changeId, e);
}
}
}
private void matchChange(Set<Change.Id> matched, Change change) {
try {
if (change != null
&& inProject(change)
&& changeControlFactory.controlFor(change).isVisible(db)) {
matched.add(change.getId());
}
} catch (NoSuchChangeException e) {
// Ignore this change.
} catch (OrmException e) {
log.warn("Error reading change " + change.getId(), e);
}
}
private boolean inProject(Change change) {
if (projectControl != null) {
return projectControl.getProject().getNameKey().equals(change.getProject());
} else {
// No --project option, so they want every project.
return true;
}
}
private void writeError(String type, String msg) {
try {
err.write((type + ": " + msg + "\n").getBytes(ENC));
} catch (IOException e) {
}
}
private static UnloggedFailure error(String msg) {
return new UnloggedFailure(1, msg);
}
}