185 lines
6.2 KiB
Java
185 lines
6.2 KiB
Java
/*
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* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package li.strolch.persistence.postgresql;
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import static li.strolch.db.DbConstants.*;
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import javax.sql.DataSource;
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import java.sql.Connection;
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import java.text.MessageFormat;
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import java.util.Map;
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import java.util.Map.Entry;
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import li.strolch.agent.api.ComponentContainer;
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import li.strolch.agent.api.StrolchAgent;
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import li.strolch.agent.api.StrolchComponent;
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import li.strolch.agent.api.StrolchRealm;
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import li.strolch.db.DbMigrationState;
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import li.strolch.db.DbSchemaVersionCheck;
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import li.strolch.persistence.api.*;
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import li.strolch.persistence.postgresql.PostgreSqlDbConnectionBuilder.StrolchPostgreDataSource;
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import li.strolch.privilege.model.Certificate;
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import li.strolch.runtime.configuration.ComponentConfiguration;
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import li.strolch.runtime.configuration.DbConnectionBuilder;
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import li.strolch.runtime.privilege.PrivilegeHandler;
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import org.postgresql.Driver;
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/**
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* @author Robert von Burg <eitch@eitchnet.ch>
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*/
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public class PostgreSqlPersistenceHandler extends StrolchComponent implements PersistenceHandler {
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public static final String SCRIPT_PREFIX_STROLCH = "strolch"; //$NON-NLS-1$
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public static final String SCRIPT_PREFIX_ARCHIVE = "archive"; //$NON-NLS-1$
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public static final String PROP_DATA_TYPE = "dataType"; //$NON-NLS-1$
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public static final String DATA_TYPE_XML = "xml"; //$NON-NLS-1$
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public static final String DATA_TYPE_JSON = "json"; //$NON-NLS-1$
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private Map<String, DataSource> dsMap;
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private DataType dataType;
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public PostgreSqlPersistenceHandler(ComponentContainer container, String componentName) {
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super(container, componentName);
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}
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@Override
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public boolean supportsPaging() {
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return true;
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}
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public DataType getDataType() {
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return this.dataType;
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}
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@Override
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public void initialize(ComponentConfiguration componentConfiguration) throws Exception {
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if (!Driver.isRegistered())
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Driver.register();
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DbConnectionBuilder connectionBuilder = new PostgreSqlDbConnectionBuilder(getContainer(),
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componentConfiguration);
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this.dsMap = connectionBuilder.build();
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this.dataType = DataType.valueOf(componentConfiguration.getString(PROP_DATA_TYPE, DATA_TYPE_XML).toLowerCase());
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super.initialize(componentConfiguration);
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}
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@Override
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public ComponentConfiguration getConfiguration() {
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return super.getConfiguration();
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}
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/**
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* Returns the map of {@link DataSource} which can be used in maintenance mode
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*
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* @return the dsMap
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*/
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public Map<String, DataSource> getDataSources() {
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return this.dsMap;
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}
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@Override
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public void start() throws Exception {
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ComponentConfiguration config = getConfiguration();
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boolean allowSchemaCreation = config.getBoolean(PROP_ALLOW_SCHEMA_CREATION, false);
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boolean allowSchemaMigration = config.getBoolean(PROP_ALLOW_SCHEMA_MIGRATION, false);
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boolean allowSchemaDrop = config.getBoolean(PROP_ALLOW_SCHEMA_DROP, false);
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boolean allowDataInitOnSchemaCreate = config.getBoolean(PROP_ALLOW_DATA_INIT_ON_SCHEMA_CREATE, false);
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DbSchemaVersionCheck schemaVersionCheck = new DbSchemaVersionCheck(SCRIPT_PREFIX_STROLCH, this.getClass(),
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allowSchemaCreation, allowSchemaMigration, allowSchemaDrop);
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schemaVersionCheck.checkSchemaVersion(this.dsMap);
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// if allowed, perform DB initialization
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if (!allowDataInitOnSchemaCreate) {
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logger.info("Data Initialization not enabled as 'allowDataInitOnSchemaCreate' is false!"); //$NON-NLS-1$
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} else {
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Map<String, DbMigrationState> dbMigrationStates = schemaVersionCheck.getDbMigrationStates();
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String msg = "Data Initialization is enabled, checking for {0} realms if DB initialization is required..."; //$NON-NLS-1$
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logger.info(MessageFormat.format(msg, dbMigrationStates.size()));
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PrivilegeHandler privilegeHandler = getContainer().getPrivilegeHandler();
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StrolchAgent agent = getContainer().getAgent();
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PostgreSqlSchemaInitializer schemaInitializer = new PostgreSqlSchemaInitializer(agent, this,
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dbMigrationStates);
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privilegeHandler.runAsAgent(schemaInitializer);
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}
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super.start();
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}
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@Override
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public void destroy() throws Exception {
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if (this.dsMap != null) {
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for (Entry<String, DataSource> entry : this.dsMap.entrySet()) {
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StrolchPostgreDataSource ds = (StrolchPostgreDataSource) entry.getValue();
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ds.shutdown();
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}
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}
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if (Driver.isRegistered())
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Driver.deregister();
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super.destroy();
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}
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@Override
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public StrolchTransaction openTx(StrolchRealm realm, Certificate certificate, String action, boolean readOnly) {
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return new PostgreSqlStrolchTransaction(getContainer(), realm, certificate, action, readOnly, this);
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}
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public Connection getConnection(String realm) {
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DataSource ds = this.dsMap.get(realm);
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if (ds == null) {
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String msg = MessageFormat.format("There is no DataSource registered for the realm {0}",
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realm); //$NON-NLS-1$
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throw new StrolchPersistenceException(msg);
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}
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try {
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return ds.getConnection();
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} catch (Exception e) {
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String msg = "Failed to open a connection to {0} due to {1}"; //$NON-NLS-1$
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throw new StrolchPersistenceException(MessageFormat.format(msg, ds, e.getMessage()), e);
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}
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}
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@Override
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public OrderDao getOrderDao(StrolchTransaction tx) {
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return ((PostgreSqlStrolchTransaction) tx).getOrderDao();
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}
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@Override
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public ResourceDao getResourceDao(StrolchTransaction tx) {
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return ((PostgreSqlStrolchTransaction) tx).getResourceDao();
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}
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@Override
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public ActivityDao getActivityDao(StrolchTransaction tx) {
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return ((PostgreSqlStrolchTransaction) tx).getActivityDao();
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}
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@Override
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public AuditDao getAuditDao(StrolchTransaction tx) {
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return ((PostgreSqlStrolchTransaction) tx).getAuditDao();
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}
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@Override
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public LogMessageDao getLogMessageDao(StrolchTransaction tx) {
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return ((PostgreSqlStrolchTransaction) tx).getLogMessageDao();
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}
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}
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