/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.ambari.server.upgrade;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.Provider;
import com.google.inject.persist.Transactional;
import org.apache.ambari.server.AmbariException;
import org.apache.ambari.server.configuration.Configuration;
import org.apache.ambari.server.orm.DBAccessor;
import org.apache.ambari.server.orm.dao.MetainfoDAO;
import org.apache.ambari.server.orm.entities.MetainfoEntity;
import org.apache.ambari.server.utils.VersionUtils;
import org.apache.commons.io.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.persistence.EntityManager;
import java.io.File;
import java.io.IOException;
import java.sql.SQLException;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
public abstract class AbstractUpgradeCatalog implements UpgradeCatalog {
@Inject
protected DBAccessor dbAccessor;
@Inject
protected Configuration configuration;
@Inject
protected StackUpgradeUtil stackUpgradeUtil;
private Injector injector;
private static final Logger LOG = LoggerFactory.getLogger
(AbstractUpgradeCatalog.class);
private static final Map<String, UpgradeCatalog> upgradeCatalogMap =
new HashMap<String, UpgradeCatalog>();
@Inject
public AbstractUpgradeCatalog(Injector injector) {
this.injector = injector;
registerCatalog(this);
}
/**
* Every subclass needs to register itself
*/
protected void registerCatalog(UpgradeCatalog upgradeCatalog) {
upgradeCatalogMap.put(upgradeCatalog.getTargetVersion(), upgradeCatalog);
}
@Override
public String getSourceVersion() {
return null;
}
protected static UpgradeCatalog getUpgradeCatalog(String version) {
return upgradeCatalogMap.get(version);
}
protected static class VersionComparator implements Comparator<UpgradeCatalog> {
@Override
public int compare(UpgradeCatalog upgradeCatalog1,
UpgradeCatalog upgradeCatalog2) {
return VersionUtils.compareVersions(upgradeCatalog1.getTargetVersion(),
upgradeCatalog2.getTargetVersion(), 3);
}
}
/**
* Update metainfo to new version.
*/
@Transactional
public int updateMetaInfoVersion(String version) {
int rows = 0;
if (version != null) {
MetainfoDAO metainfoDAO = injector.getInstance(MetainfoDAO.class);
MetainfoEntity versionEntity = metainfoDAO.findByKey("version");
if (versionEntity != null) {
versionEntity.setMetainfoValue(version);
metainfoDAO.merge(versionEntity);
} else {
versionEntity = new MetainfoEntity();
versionEntity.setMetainfoName("version");
versionEntity.setMetainfoValue(version);
metainfoDAO.create(versionEntity);
}
}
return rows;
}
protected String getDbType() {
String dbUrl = configuration.getDatabaseUrl();
String dbType;
if (dbUrl.contains(Configuration.POSTGRES_DB_NAME)) {
dbType = Configuration.POSTGRES_DB_NAME;
} else if (dbUrl.contains(Configuration.ORACLE_DB_NAME)) {
dbType = Configuration.ORACLE_DB_NAME;
} else if (dbUrl.contains(Configuration.MYSQL_DB_NAME)) {
dbType = Configuration.MYSQL_DB_NAME;
} else if (dbUrl.contains(Configuration.DERBY_DB_NAME)) {
dbType = Configuration.DERBY_DB_NAME;
} else {
throw new RuntimeException("Unable to determine database type.");
}
return dbType;
}
protected Provider<EntityManager> getEntityManagerProvider() {
return injector.getProvider(EntityManager.class);
}
protected void executeInTransaction(Runnable func) {
EntityManager entityManager = getEntityManagerProvider().get();
if (entityManager.getTransaction().isActive()) { //already started, reuse
func.run();
} else {
entityManager.getTransaction().begin();
try {
func.run();
entityManager.getTransaction().commit();
} catch (Exception e) {
LOG.error("Error in transaction ", e);
if (entityManager.getTransaction().isActive()) {
entityManager.getTransaction().rollback();
}
throw new RuntimeException(e);
}
}
}
protected void changePostgresSearchPath() throws SQLException {
String dbUser = configuration.getDatabaseUser();
String dbName = configuration.getServerDBName();
//wrap username with double quotes to accept old username "ambari-server"
if (!dbUser.contains("\"")) {
dbUser = String.format("\"%s\"", dbUser);
}
dbAccessor.executeQuery(String.format("ALTER SCHEMA %s OWNER TO %s;", dbName, dbUser));
dbAccessor.executeQuery(String.format("ALTER ROLE %s SET search_path to '%s';", dbUser, dbName));
}
@Override
public void upgradeSchema() throws AmbariException, SQLException {
if (getDbType().equals(Configuration.POSTGRES_DB_NAME)) {
changePostgresSearchPath();
}
this.executeDDLUpdates();
}
@Override
public void upgradeData() throws AmbariException, SQLException {
executeDMLUpdates();
updateMetaInfoVersion(getTargetVersion());
}
protected abstract void executeDDLUpdates() throws AmbariException, SQLException;
protected abstract void executeDMLUpdates() throws AmbariException, SQLException;
@Override
public String toString() {
return "{ " + this.getClass().getCanonicalName() +": " +
"sourceVersion = " + getSourceVersion() + ", " +
"targetVersion = " + getTargetVersion() + " }";
}
}