Java tutorial
/* * SonarQube, open source software quality management tool. * Copyright (C) 2008-2014 SonarSource * mailto:contact AT sonarsource DOT com * * SonarQube is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 3 of the License, or (at your option) any later version. * * SonarQube is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package org.sonar.server.db.migrations.v50; import com.google.common.base.Splitter; import com.google.common.base.Strings; import org.apache.ibatis.session.ResultContext; import org.apache.ibatis.session.ResultHandler; import org.sonar.api.resources.Scopes; import org.sonar.api.utils.internal.Uuids; import org.sonar.api.utils.log.Logger; import org.sonar.api.utils.log.Loggers; import org.sonar.core.persistence.DbSession; import org.sonar.core.persistence.migration.v50.Component; import org.sonar.core.persistence.migration.v50.Migration50Mapper; import org.sonar.server.db.DbClient; import org.sonar.server.db.migrations.MigrationStep; import org.sonar.server.util.ProgressLogger; import java.util.List; import java.util.Map; import java.util.concurrent.atomic.AtomicLong; import static com.google.common.collect.Lists.newArrayList; import static com.google.common.collect.Maps.newHashMap; /** * Used in the Active Record Migration 705 * * @since 5.0 */ public class PopulateProjectsUuidColumnsMigrationStep implements MigrationStep { private static final Logger LOG = Loggers.get(PopulateProjectsUuidColumnsMigrationStep.class); private final DbClient db; private final AtomicLong counter = new AtomicLong(0L); public PopulateProjectsUuidColumnsMigrationStep(DbClient db) { this.db = db; } @Override public void execute() { ProgressLogger progress = ProgressLogger.create(getClass(), counter); progress.start(); final DbSession readSession = db.openSession(false); final DbSession writeSession = db.openSession(true); try { readSession.select("org.sonar.core.persistence.migration.v50.Migration50Mapper.selectRootProjects", new ResultHandler() { @Override public void handleResult(ResultContext context) { Component project = (Component) context.getResultObject(); List<Component> components = readSession.getMapper(Migration50Mapper.class) .selectComponentChildrenForProjects(project.getId()); MigrationContext migrationContext = new MigrationContext(readSession, writeSession, project, components); migrateEnabledComponents(migrationContext); migrateDisabledComponents(migrationContext); } }); writeSession.commit(true); readSession.commit(true); migrateComponentsWithoutUuid(readSession, writeSession); writeSession.commit(true); // log the total number of process rows progress.log(); } finally { readSession.close(); writeSession.close(); progress.stop(); } } private void migrateEnabledComponents(MigrationContext migrationContext) { saveComponent(migrationContext.writeSession, migrationContext.project); for (Component component : migrationContext.componentsToMigrate) { migrationContext.updateComponent(component); if (Strings.isNullOrEmpty(component.getModuleUuidPath())) { LOG.warn(String.format( "Ignoring component id '%s' because the module uuid path could not be created", component.getId())); } else { migrationContext.updateComponent(component); saveComponent(migrationContext.writeSession, component); } } } private void migrateDisabledComponents(MigrationContext migrationContext) { for (Component component : migrationContext.readSession.getMapper(Migration50Mapper.class) .selectDisabledDirectComponentChildrenForProjects(migrationContext.project.getId())) { migrationContext.updateComponent(component); saveComponent(migrationContext.writeSession, component); } for (Component component : migrationContext.readSession.getMapper(Migration50Mapper.class) .selectDisabledNoneDirectComponentChildrenForProjects(migrationContext.project.getId())) { migrationContext.updateComponent(component); saveComponent(migrationContext.writeSession, component); } } private void migrateComponentsWithoutUuid(DbSession readSession, DbSession writeSession) { for (Component component : readSession.getMapper(Migration50Mapper.class).selectComponentsWithoutUuid()) { String uuid = Uuids.create(); component.setUuid(uuid); component.setProjectUuid(uuid); saveComponent(writeSession, component); } } private void saveComponent(DbSession writeSession, Component component) { writeSession.getMapper(Migration50Mapper.class).updateComponentUuids(component); counter.getAndIncrement(); } private static class MigrationContext { private final DbSession readSession; private final DbSession writeSession; private final Component project; private final Map<Long, Component> componentsBySnapshotId = newHashMap(); private final Map<Long, String> uuidByComponentId = newHashMap(); private final List<Component> componentsToMigrate = newArrayList(); private MigrationContext(DbSession readSession, DbSession writeSession, Component project, List<Component> components) { this.readSession = readSession; this.writeSession = writeSession; this.project = project; project.setUuid(getOrCreateUuid(project)); project.setProjectUuid(project.getUuid()); componentsBySnapshotId.put(project.getSnapshotId(), project); for (Component component : components) { componentsBySnapshotId.put(component.getSnapshotId(), component); if (component.getUuid() == null) { componentsToMigrate.add(component); } } } public void updateComponent(Component component) { component.setUuid(getOrCreateUuid(component)); component.setProjectUuid(getOrCreateUuid(project)); String snapshotPath = component.getSnapshotPath(); StringBuilder moduleUuidPath = new StringBuilder(); String lastModuleUuid = null; if (!Strings.isNullOrEmpty(snapshotPath)) { for (String s : Splitter.on(".").omitEmptyStrings().split(snapshotPath)) { Long snapshotId = Long.valueOf(s); Component currentComponent = componentsBySnapshotId.get(snapshotId); if (currentComponent != null && currentComponent.getScope().equals(Scopes.PROJECT)) { lastModuleUuid = getOrCreateUuid(currentComponent); moduleUuidPath.append(lastModuleUuid).append("."); } } } if (moduleUuidPath.length() > 0 && lastModuleUuid != null) { // Remove last '.' moduleUuidPath.deleteCharAt(moduleUuidPath.length() - 1); component.setModuleUuidPath(moduleUuidPath.toString()); component.setModuleUuid(lastModuleUuid); } } private String getOrCreateUuid(Component component) { String existingUuid = component.getUuid(); String uuid = existingUuid == null ? uuidByComponentId.get(component.getId()) : existingUuid; if (uuid == null) { String newUuid = Uuids.create(); uuidByComponentId.put(component.getId(), newUuid); return newUuid; } return uuid; } } }