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/*
* @(#) JdbcResourceDeployer.java
*
* Copyright 2000-2001 by iPlanet/Sun Microsystems, Inc.,
* 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
* All rights reserved.
*
* This software is the confidential and proprietary information
* of iPlanet/Sun Microsystems, Inc. ("Confidential Information").
* You shall not disclose such Confidential Information and shall
* use it only in accordance with the terms of the license
* agreement you entered into with iPlanet/Sun Microsystems.
*/
package com.sun.enterprise.resource;
import com.sun.enterprise.server.ResourceDeployer;
import com.sun.enterprise.connectors.util.ResourcesUtil;
import com.sun.enterprise.config.serverbeans.Resources;
import com.sun.enterprise.connectors.ConnectorAdminServiceUtils;
import com.sun.enterprise.connectors.ConnectorRuntime;
import com.sun.enterprise.Switch;
import com.sun.enterprise.repository.IASJ2EEResourceFactoryImpl;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.enterprise.ManagementObjectManager;
import javax.naming.InitialContext;
import com.sun.enterprise.config.ConfigBean;
import com.sun.enterprise.config.ConfigException;
/**
* Handles Jdbc resource events in the server instance. When user adds a
* jdbc resource, the admin instance emits resource event. The jdbc
* resource events are propagated to this object.
*
* The methods can potentially be called concurrently, therefore implementation
* need to be synchronized.
*
* @author Nazrul Islam
* @since JDK1.4
*/
public class JdbcResourceDeployer implements ResourceDeployer {
private static final StringManager localStrings =
StringManager.getManager("com.sun.enterprise.resource");
/** logger for this deployer */
private static Logger _logger=LogDomains.getLogger(LogDomains.CORE_LOGGER);
private static final String PM_JNDI_EXTENSION = "__pm";
/**
* Deploy the resource into the server's runtime naming context
*
* @param resource a resource object (eg. JmsResource)
* @exception Exception thrown if fail
*/
public synchronized void deployResource(Object resource) throws Exception {
com.sun.enterprise.config.serverbeans.JdbcResource jdbcRes =
(com.sun.enterprise.config.serverbeans.JdbcResource) resource;
if (jdbcRes.isEnabled()) {
String jndiName = jdbcRes.getJndiName();
String poolName = jdbcRes.getPoolName();
// loads dependent jdbc connection pool if not loaded
loadPool(jdbcRes);
ManagementObjectManager mgr = Switch.getSwitch().getManagementObjectManager();
mgr.registerJDBCResource( jndiName );
ConnectorRuntime runtime = ConnectorRuntime.getRuntime();
runtime.createConnectorResource( jndiName, poolName, null);
runtime.createConnectorResource( getPMJndiName( jndiName),
poolName, null);
_logger.finest("deployed resource " + jndiName );
} else {
_logger.log(Level.INFO, "core.resource_disabled",
new Object[] {jdbcRes.getJndiName(),
IASJ2EEResourceFactoryImpl.JDBC_RES_TYPE});
}
}
/**
* Undeploy the resource from the server's runtime naming context
*
* @param resource a resource object (eg. JmsResource)
* @exception Exception thrown if fail
*/
public synchronized void undeployResource(Object resource)
throws Exception {
com.sun.enterprise.config.serverbeans.JdbcResource jdbcRes =
(com.sun.enterprise.config.serverbeans.JdbcResource) resource;
String jndiName = jdbcRes.getJndiName();
String pmJndiName = getPMJndiName( jdbcRes.getJndiName() );
ConnectorRuntime runtime = ConnectorRuntime.getRuntime();
runtime.deleteConnectorResource( jndiName );
runtime.deleteConnectorResource( pmJndiName );
ManagementObjectManager mgr =
Switch.getSwitch().getManagementObjectManager();
mgr.unregisterJDBCResource( jndiName );
//Since 8.1 PE/SE/EE - if no more resource-ref to the pool
//of this resource exists in this server instance, remove
//pool from connector runtime
checkAndDeletePool(jdbcRes);
}
/**
* Redeploy the resource into the server's runtime naming context
*
* @param resource a resource object (eg. JmsResource)
* @exception Exception thrown if fail
*/
public synchronized void redeployResource(Object resource)
throws Exception {
undeployResource(resource);
deployResource(resource);
}
/**
* Enable the resource in the server's runtime naming context
*
* @param resource a resource object (eg. JmsResource)
* @exception Exception thrown if fail
*/
public synchronized void enableResource(Object resource) throws Exception {
deployResource(resource);
}
/**
* Disable the resource in the server's runtime naming context
*
* @param resource a resource object (eg. JmsResource)
* @exception Exception thrown if fail
*/
public synchronized void disableResource(Object resource) throws Exception {
undeployResource(resource);
}
/**
* Utility method to find a resource from Resources beans and converte
* it to a resource object to be used by the implemented ResourceDeployer
*
* @param name resource name (normally the jndi-name)
* @param rbeans Resources config-beans
* @exception Exception thrown if fail
*/
public Object getResource(String name, Resources rbeans) throws Exception {
Object res = rbeans.getJdbcResourceByJndiName(name);
if (res == null) {
String msg = localStrings.getString("resource.no_resource",name);
throw new Exception(msg);
}
return res;
}
/* Return the system PM name for the JNDI name*/
private String getPMJndiName( String jndiName ) {
return jndiName + PM_JNDI_EXTENSION;
}
private void loadPool(com.sun.enterprise.config.serverbeans.JdbcResource jr)
throws Exception {
String poolName = jr.getPoolName();
Resources resources = (Resources) jr.parent();
ConfigBean cb = resources.getJdbcConnectionPoolByName(poolName);
if (cb != null) {
try {
InitialContext ic = new InitialContext();
ic.lookup(ConnectorAdminServiceUtils.
getReservePrefixedJNDINameForPool(poolName));
} catch (Exception e) {
// pool is not loaded
JdbcConnectionPoolDeployer deployer =
new JdbcConnectionPoolDeployer();
deployer.actualDeployResource(cb);
}
}
}
/**
* Checks if no more resource-refs to resources exists for the
* JDBC connection pool and then deletes the pool
* @param cr Jdbc Resource Config bean
* @throws Exception if unable to access configuration/undeploy resource.
* @since 8.1 pe/se/ee
*/
private void checkAndDeletePool(com.sun.enterprise.config.serverbeans.JdbcResource
cr) throws Exception {
String poolName = cr.getPoolName();
Resources res = (Resources) cr.parent();
try {
boolean poolReferred =
ResourcesUtil.createInstance().isJdbcPoolReferredInServerInstance(poolName);
if (!poolReferred) {
_logger.fine("Deleting JDBC pool " + poolName + "as there is no more " +
"resource-refs to the pool in this server instance");
com.sun.enterprise.config.serverbeans.JdbcConnectionPool jcp
= res.getJdbcConnectionPoolByName(poolName);
//Delete/Undeploy Pool
JdbcConnectionPoolDeployer deployer =
new JdbcConnectionPoolDeployer();
deployer.actualUndeployResource(jcp);
}
} catch (ConfigException ce) {
_logger.warning(ce.getMessage());
_logger.fine("Exception while deleting pool : " + ce );
throw ce;
}
}
}
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