package org.infinispan.persistence.jdbc.connectionfactory;
import org.infinispan.persistence.CacheLoaderException;
import org.infinispan.persistence.jdbc.configuration.ConnectionFactoryConfiguration;
import org.infinispan.persistence.jdbc.configuration.ManagedConnectionFactoryConfiguration;
import org.infinispan.persistence.jdbc.logging.Log;
import org.infinispan.util.logging.LogFactory;
import javax.sql.DataSource;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.sql.Connection;
import java.sql.SQLException;
/**
* Connection factory that can be used when on managed environments, like application servers. It knows how to look into
* the JNDI tree at a certain location (configurable) and delegate connection management to the DataSource. In order to
* enable it one should set the following two properties in any Jdbc cache store:
* <pre>
* <property name="connectionFactoryClass" value="ManagedConnectionFactory"/>
* <property name="datasourceJndiLocation" value="java:/ManagedConnectionFactoryTest/DS"/>
* </pre>
*
* @author Mircea.Markus@jboss.com
*/
public class ManagedConnectionFactory extends ConnectionFactory {
private static final Log log = LogFactory.getLog(ManagedConnectionFactory.class, Log.class);
private static final boolean trace = log.isTraceEnabled();
private DataSource dataSource;
@Override
public void start(ConnectionFactoryConfiguration factoryConfiguration, ClassLoader classLoader) throws CacheLoaderException {
InitialContext ctx = null;
String datasourceName;
if (factoryConfiguration instanceof ManagedConnectionFactoryConfiguration) {
ManagedConnectionFactoryConfiguration managedConfiguration = (ManagedConnectionFactoryConfiguration)
factoryConfiguration;
datasourceName = managedConfiguration.jndiUrl();
}
else {
throw new CacheLoaderException("FactoryConfiguration has to be an instance of " +
"ManagedConnectionFactoryConfiguration");
}
try {
ctx = new InitialContext();
dataSource = (DataSource) ctx.lookup(datasourceName);
if (trace) {
log.tracef("Datasource lookup for %s succeeded: %b", datasourceName, dataSource);
}
if (dataSource == null) {
log.connectionInJndiNotFound(datasourceName);
throw new CacheLoaderException(String.format(
"Could not find a connection in jndi under the name '%s'", datasourceName));
}
}
catch (NamingException e) {
log.namingExceptionLookingUpConnection(datasourceName, e);
throw new CacheLoaderException(e);
}
finally {
if (ctx != null) {
try {
ctx.close();
}
catch (NamingException e) {
log.failedClosingNamingCtx(e);
}
}
}
}
@Override
public void stop() {
}
@Override
public Connection getConnection() throws CacheLoaderException {
Connection connection;
try {
connection = dataSource.getConnection();
} catch (SQLException e) {
log.sqlFailureRetrievingConnection(e);
throw new CacheLoaderException("This might be related to https://jira.jboss.org/browse/ISPN-604", e);
}
if (trace) {
log.tracef("Connection checked out: %s", connection);
}
return connection;
}
@Override
public void releaseConnection(Connection conn) {
try {
if (conn != null) // Could be null if getConnection failed
conn.close();
} catch (SQLException e) {
log.sqlFailureClosingConnection(conn, e);
}
}
}