| /* |
| * 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 WARRANTIESOR 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.aries.jpa.container.impl; |
| |
| import static javax.persistence.spi.PersistenceUnitTransactionType.JTA; |
| |
| import javax.sql.DataSource; |
| |
| import org.apache.aries.jpa.container.parser.impl.PersistenceUnit; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.Filter; |
| import org.osgi.framework.InvalidSyntaxException; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.util.tracker.ServiceTracker; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class DataSourceTracker extends ServiceTracker<DataSource, DataSource>{ |
| private static final Logger LOGGER = LoggerFactory.getLogger(DataSourceTracker.class); |
| |
| static final String DS_PREFIX = "osgi:service/javax.sql.DataSource"; |
| |
| private final AriesEntityManagerFactoryBuilder builder; |
| |
| private final String dsName; |
| |
| public DataSourceTracker(BundleContext context, AriesEntityManagerFactoryBuilder builder, |
| String dsName) { |
| super(context, createFilter(context, dsName, builder.getPUName()), null); |
| this.builder = builder; |
| this.dsName = dsName; |
| } |
| |
| static Filter createFilter(BundleContext context, String dsName, String puName) { |
| if (dsName == null) { |
| throw new IllegalArgumentException("No DataSource supplied in persistence.xml"); |
| } |
| String subFilter = getSubFilter(dsName); |
| String filter = String.format("(&(objectClass=%s)%s)", |
| DataSource.class.getName(), |
| subFilter); |
| LOGGER.info("Tracking DataSource for punit " + puName + " with filter " + filter); |
| try { |
| return context.createFilter(filter); |
| } catch (InvalidSyntaxException e) { |
| throw new IllegalArgumentException(e); |
| } |
| } |
| |
| private static String getSubFilter(String dsName) { |
| if (dsName.startsWith(DS_PREFIX)) { |
| return (dsName.length() > DS_PREFIX.length() +1) |
| ? dsName.substring(DS_PREFIX.length()+1) |
| : "(osgi.jndi.service.name=*)"; |
| } else { |
| return "(osgi.jndi.service.name=" + dsName + ")"; |
| } |
| } |
| |
| static String getDsName(PersistenceUnit punit) { |
| return punit.getTransactionType() == JTA ? punit.getJtaDataSourceName() : punit.getNonJtaDataSourceName(); |
| } |
| |
| @Override |
| public DataSource addingService(ServiceReference<DataSource> reference) { |
| LOGGER.info("Found DataSource for " + builder.getPUName() + " " + dsName); |
| DataSource ds = super.addingService(reference); |
| |
| if(ds != null) { |
| builder.foundDS(ds); |
| } |
| return ds; |
| } |
| |
| |
| @Override |
| public void removedService(ServiceReference<DataSource> reference, DataSource ds) { |
| LOGGER.info("Lost DataSource for " + builder.getPUName() + " " + dsName); |
| builder.lostDS(ds, getService()); |
| super.removedService(reference, ds); |
| } |
| |
| } |