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// Copyright (C) 2009 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.account;
import static com.google.gerrit.server.account.ExternalId.SCHEME_USERNAME;
import static java.util.stream.Collectors.toSet;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.common.errors.NameAlreadyUsedException;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.ssh.SshKeyCache;
import com.google.gwtjsonrpc.common.VoidResult;
import com.google.gwtorm.server.OrmDuplicateKeyException;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.assistedinject.Assisted;
import java.io.IOException;
import java.util.Collection;
import java.util.concurrent.Callable;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/** Operation to change the username of an account. */
public class ChangeUserName implements Callable<VoidResult> {
private static final Logger log = LoggerFactory.getLogger(ChangeUserName.class);
public static final String USERNAME_CANNOT_BE_CHANGED = "Username cannot be changed.";
/** Generic factory to change any user's username. */
public interface Factory {
ChangeUserName create(ReviewDb db, IdentifiedUser user, String newUsername);
}
private final AccountCache accountCache;
private final SshKeyCache sshKeyCache;
private final ExternalIdsUpdate.Server externalIdsUpdateFactory;
private final ReviewDb db;
private final IdentifiedUser user;
private final String newUsername;
@Inject
ChangeUserName(
AccountCache accountCache,
SshKeyCache sshKeyCache,
ExternalIdsUpdate.Server externalIdsUpdateFactory,
@Assisted ReviewDb db,
@Assisted IdentifiedUser user,
@Nullable @Assisted String newUsername) {
this.accountCache = accountCache;
this.sshKeyCache = sshKeyCache;
this.externalIdsUpdateFactory = externalIdsUpdateFactory;
this.db = db;
this.user = user;
this.newUsername = newUsername;
}
@Override
public VoidResult call()
throws OrmException, NameAlreadyUsedException, InvalidUserNameException, IOException,
ConfigInvalidException {
Collection<ExternalId> old =
ExternalId.from(db.accountExternalIds().byAccount(user.getAccountId()).toList()).stream()
.filter(e -> e.isScheme(SCHEME_USERNAME))
.collect(toSet());
if (!old.isEmpty()) {
log.error(
"External id with scheme \"username:\" already exists for the user {}",
user.getAccountId());
throw new IllegalStateException(USERNAME_CANNOT_BE_CHANGED);
}
ExternalIdsUpdate externalIdsUpdate = externalIdsUpdateFactory.create();
if (newUsername != null && !newUsername.isEmpty()) {
if (!ExternalId.isValidUsername(newUsername)) {
throw new InvalidUserNameException();
}
ExternalId.Key key = ExternalId.Key.create(SCHEME_USERNAME, newUsername);
try {
String password = null;
for (ExternalId i : old) {
if (i.password() != null) {
password = i.password();
}
}
externalIdsUpdate.insert(db, ExternalId.create(key, user.getAccountId(), null, password));
log.info("Created the new external Id with key: {}", key);
} catch (OrmDuplicateKeyException dupeErr) {
// If we are using this identity, don't report the exception.
//
ExternalId other =
ExternalId.from(db.accountExternalIds().get(key.asAccountExternalIdKey()));
if (other != null && other.accountId().equals(user.getAccountId())) {
return VoidResult.INSTANCE;
}
// Otherwise, someone else has this identity.
//
throw new NameAlreadyUsedException(newUsername);
}
}
// If we have any older user names, remove them.
//
externalIdsUpdate.delete(db, old);
for (ExternalId extId : old) {
sshKeyCache.evict(extId.key().id());
accountCache.evictByUsername(extId.key().id());
}
accountCache.evictByUsername(newUsername);
sshKeyCache.evict(newUsername);
return VoidResult.INSTANCE;
}
}
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