strolch/persistence-postgresql/src/main/java/li/strolch/persistence/postgresql/PostgreSqlInitializer.java

98 lines
4.0 KiB
Java

/*
* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
*
* 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 li.strolch.persistence.postgresql;
import static li.strolch.agent.impl.DefaultRealmHandler.PREFIX_DATA_STORE_FILE;
import static li.strolch.runtime.StrolchConstants.makeRealmKey;
import java.io.File;
import java.text.MessageFormat;
import li.strolch.agent.api.RealmHandler;
import li.strolch.agent.api.StrolchAgent;
import li.strolch.agent.impl.StoreToDaoElementListener;
import li.strolch.db.DbMigrationState;
import li.strolch.model.ModelStatistics;
import li.strolch.model.xml.XmlModelSaxFileReader;
import li.strolch.persistence.api.StrolchTransaction;
import li.strolch.privilege.handler.SystemAction;
import li.strolch.privilege.model.Certificate;
import li.strolch.runtime.configuration.ComponentConfiguration;
import li.strolch.runtime.configuration.RuntimeConfiguration;
import li.strolch.runtime.configuration.StrolchConfiguration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Robert von Burg <eitch@eitchnet.ch>
*/
public abstract class PostgreSqlInitializer extends SystemAction {
protected static final Logger logger = LoggerFactory.getLogger(PostgreSqlInitializer.class);
protected StrolchAgent agent;
protected PostgreSqlPersistenceHandler persistenceHandler;
protected RuntimeConfiguration runtimeConfig;
protected ComponentConfiguration realmConfig;
public PostgreSqlInitializer(StrolchAgent agent, PostgreSqlPersistenceHandler persistenceHandler) {
this.agent = agent;
this.persistenceHandler = persistenceHandler;
StrolchConfiguration strolchConfiguration = agent.getStrolchConfiguration();
this.runtimeConfig = strolchConfiguration.getRuntimeConfiguration();
this.realmConfig = strolchConfiguration.getComponentConfiguration(RealmHandler.class.getSimpleName());
}
protected abstract Certificate getCertificate();
protected void initSchemaFromDataStore(DbMigrationState migrationType, String realmName) {
boolean needsDbInit = checkNeedsDbInit(migrationType);
if (!needsDbInit) {
String msg = "Schema for realm {0} had no migration run. No need for data initialization.";
logger.info(MessageFormat.format(msg, realmName));
return;
}
String msg = "Migration for schema for realm {0} was {1} so need to initialize the data from the databaseStore...";
logger.info(MessageFormat.format(msg, realmName, migrationType));
ModelStatistics statistics;
try (StrolchTransaction tx = this.persistenceHandler.openTx(this.agent.getContainer().getRealm(realmName),
getCertificate(), getClass().getSimpleName(), false)) {
File dataStoreF = getDataStoreFile(this.runtimeConfig, this.realmConfig, realmName);
StoreToDaoElementListener listener = new StoreToDaoElementListener(tx);
XmlModelSaxFileReader handler = new XmlModelSaxFileReader(listener, dataStoreF, true);
handler.parseFile();
statistics = handler.getStatistics();
tx.commitOnClose();
}
logger.info(MessageFormat.format("Realm {0} initialization statistics: {1}", realmName, statistics));
}
protected boolean checkNeedsDbInit(DbMigrationState migrationType) {
return switch (migrationType) {
case CREATED, DROPPED_CREATED -> true;
case MIGRATED, NOTHING -> false;
};
}
protected File getDataStoreFile(RuntimeConfiguration runtimeConfiguration,
ComponentConfiguration realmConfiguration, String realmName) {
String dataStoreKey = makeRealmKey(realmName, PREFIX_DATA_STORE_FILE);
return realmConfiguration.getDataFile(dataStoreKey, null, runtimeConfiguration, true);
}
}