/*
* 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.aries.transaction.jdbc.internal;
import org.apache.aries.blueprint.NamespaceHandler;
import org.apache.aries.transaction.AriesTransactionManager;
import org.apache.aries.util.tracker.SingleServiceTracker;
import org.apache.xbean.blueprint.context.impl.XBeanNamespaceHandler;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Filter;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
import org.osgi.util.tracker.ServiceTracker;
import org.osgi.util.tracker.ServiceTrackerCustomizer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.sql.CommonDataSource;
import java.util.Hashtable;
@SuppressWarnings("rawtypes")
public class Activator implements BundleActivator,
ServiceTrackerCustomizer<CommonDataSource, ManagedDataSourceFactory>,
SingleServiceTracker.SingleServiceListener
{
private static final Logger LOGGER = LoggerFactory.getLogger(Activator.class);
private ServiceTracker<CommonDataSource, ManagedDataSourceFactory> t;
private SingleServiceTracker<AriesTransactionManager> tm;
private BundleContext context;
private ServiceRegistration[] nshReg;
public void start(BundleContext ctx) {
context = ctx;
// Expose blueprint namespace handler if xbean is present
try {
nshReg = JdbcNamespaceHandler.register(ctx);
} catch (NoClassDefFoundError e) {
LOGGER.warn("Unable to register JDBC blueprint namespace handler (xbean-blueprint not available).");
} catch (Exception e) {
LOGGER.error("Unable to register JDBC blueprint namespace handler", e);
}
Filter filter;
String flt = "(&(|(objectClass=javax.sql.XADataSource)(objectClass=javax.sql.DataSource))(!(aries.managed=true)))";
try {
filter = context.createFilter(flt);
} catch (InvalidSyntaxException e) {
throw new IllegalStateException(e);
}
t = new ServiceTracker<CommonDataSource, ManagedDataSourceFactory>(ctx, filter, this);
tm = new SingleServiceTracker<AriesTransactionManager>(ctx, AriesTransactionManager.class, this);
tm.open();
}
public void stop(BundleContext ctx) {
tm.close();
t.close();
if (nshReg != null) {
for (ServiceRegistration reg : nshReg) {
safeUnregisterService(reg);
}
}
}
public ManagedDataSourceFactory addingService(ServiceReference<CommonDataSource> ref) {
try {
LOGGER.info("Wrapping DataSource " + ref);
ManagedDataSourceFactory mdsf = new ManagedDataSourceFactory(ref, tm.getService());
mdsf.register();
return mdsf;
} catch (Exception e) {
LOGGER.warn("Error wrapping DataSource " + ref, e);
return null;
}
}
public void modifiedService(ServiceReference<CommonDataSource> ref, ManagedDataSourceFactory service) {
try {
service.unregister();
} catch (Exception e) {
LOGGER.warn("Error closing DataSource " + ref, e);
}
try {
service.register();
} catch (Exception e) {
LOGGER.warn("Error wrapping DataSource " + ref, e);
}
}
public void removedService(ServiceReference<CommonDataSource> ref, ManagedDataSourceFactory service) {
try {
service.unregister();
} catch (Exception e) {
LOGGER.warn("Error closing DataSource " + ref, e);
}
}
static void safeUnregisterService(ServiceRegistration reg) {
if (reg != null) {
try {
reg.unregister();
} catch (IllegalStateException e) {
//This can be safely ignored
}
}
}
@Override
public void serviceFound()
{
t.open();
}
@Override
public void serviceLost()
{
t.close();
}
@Override
public void serviceReplaced()
{
t.close();
t.open();
}
static class JdbcNamespaceHandler {
public static ServiceRegistration[] register(BundleContext context) throws Exception {
XBeanNamespaceHandler nsh20 = new XBeanNamespaceHandler(
"http://aries.apache.org/xmlns/transaction-jdbc/2.0",
"org.apache.aries.transaction.jdbc-2.0.xsd",
context.getBundle(),
"META-INF/services/org/apache/xbean/spring/http/aries.apache.org/xmlns/transaction-jdbc/2.0"
);
Hashtable<String, Object> props20 = new Hashtable<String, Object>();
props20.put("osgi.service.blueprint.namespace", "http://aries.apache.org/xmlns/transaction-jdbc/2.0");
ServiceRegistration reg20 = context.registerService(NamespaceHandler.class.getName(), nsh20, props20);
XBeanNamespaceHandler nsh21 = new XBeanNamespaceHandler(
"http://aries.apache.org/xmlns/transaction-jdbc/2.1",
"org.apache.aries.transaction.jdbc.xsd",
context.getBundle(),
"META-INF/services/org/apache/xbean/spring/http/aries.apache.org/xmlns/transaction-jdbc/2.1"
);
Hashtable<String, Object> props21 = new Hashtable<String, Object>();
props21.put("osgi.service.blueprint.namespace", "http://aries.apache.org/xmlns/transaction-jdbc/2.1");
ServiceRegistration reg21 = context.registerService(NamespaceHandler.class.getName(), nsh21, props21);
return new ServiceRegistration[] { reg20, reg21 };
}
}
}