| // Copyright (C) 2017 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.schema; |
| |
| import static java.util.stream.Collectors.toSet; |
| |
| import com.google.gerrit.reviewdb.client.Account; |
| import com.google.gerrit.reviewdb.client.RefNames; |
| import com.google.gerrit.reviewdb.server.ReviewDb; |
| import com.google.gerrit.server.config.AllUsersName; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import java.io.IOException; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import java.util.HashSet; |
| import java.util.Objects; |
| import java.util.Set; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.RefUpdate.Result; |
| import org.eclipse.jgit.lib.Repository; |
| |
| /** Delete user branches for which no account exists. */ |
| public class Schema_147 extends SchemaVersion { |
| private final GitRepositoryManager repoManager; |
| private final AllUsersName allUsersName; |
| |
| @Inject |
| Schema_147( |
| Provider<Schema_146> prior, GitRepositoryManager repoManager, AllUsersName allUsersName) { |
| super(prior); |
| this.repoManager = repoManager; |
| this.allUsersName = allUsersName; |
| } |
| |
| @Override |
| protected void migrateData(ReviewDb db, UpdateUI ui) throws OrmException, SQLException { |
| try (Repository repo = repoManager.openRepository(allUsersName)) { |
| Set<Account.Id> accountIdsFromReviewDb = scanAccounts(db); |
| Set<Account.Id> accountIdsFromUserBranches = |
| repo.getRefDatabase().getRefsByPrefix(RefNames.REFS_USERS).stream() |
| .map(r -> Account.Id.fromRef(r.getName())) |
| .filter(Objects::nonNull) |
| .collect(toSet()); |
| accountIdsFromUserBranches.removeAll(accountIdsFromReviewDb); |
| for (Account.Id accountId : accountIdsFromUserBranches) { |
| deleteUserBranch(repo, accountId); |
| } |
| } catch (IOException e) { |
| throw new OrmException("Failed to delete user branches for non-existing accounts.", e); |
| } |
| } |
| |
| private Set<Account.Id> scanAccounts(ReviewDb db) throws SQLException { |
| try (Statement stmt = newStatement(db); |
| ResultSet rs = stmt.executeQuery("SELECT account_id FROM accounts")) { |
| Set<Account.Id> ids = new HashSet<>(); |
| while (rs.next()) { |
| ids.add(new Account.Id(rs.getInt(1))); |
| } |
| return ids; |
| } |
| } |
| |
| private void deleteUserBranch(Repository allUsersRepo, Account.Id accountId) throws IOException { |
| String refName = RefNames.refsUsers(accountId); |
| Ref ref = allUsersRepo.exactRef(refName); |
| if (ref == null) { |
| return; |
| } |
| |
| RefUpdate ru = allUsersRepo.updateRef(refName); |
| ru.setExpectedOldObjectId(ref.getObjectId()); |
| ru.setNewObjectId(ObjectId.zeroId()); |
| ru.setForceUpdate(true); |
| Result result = ru.delete(); |
| if (result != Result.FORCED) { |
| throw new IOException(String.format("Failed to delete ref %s: %s", refName, result.name())); |
| } |
| } |
| } |