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/*
* @(#) StandAloneEJBModulesManager.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.server;
import com.sun.enterprise.admin.event.AdminEventListenerException;
import com.sun.enterprise.admin.event.AdminEventListenerRegistry;
import com.sun.enterprise.admin.event.BaseDeployEvent;
import com.sun.enterprise.admin.event.DeployEventListenerHelper;
import com.sun.enterprise.admin.event.ModuleDeployEvent;
import com.sun.enterprise.admin.event.ModuleDeployEventListener;
import com.sun.enterprise.config.ConfigException;
import com.sun.enterprise.instance.EjbModulesManager;
import com.sun.enterprise.security.acl.RoleMapper;
import com.sun.enterprise.deployment.Application;
import com.sun.enterprise.util.i18n.StringManager;
import com.sun.enterprise.deployment.backend.Deployer;
import com.sun.enterprise.deployment.backend.DeployerFactory;
import com.sun.enterprise.deployment.backend.DeploymentRequest;
import com.sun.enterprise.deployment.backend.DeploymentCommand;
import com.sun.enterprise.deployment.backend.DeployableObjectType;
import com.sun.enterprise.deployment.backend.IASDeploymentException;
import com.sun.enterprise.config.ConfigContext;
import java.util.logging.Logger;
import java.util.logging.Level;
import com.sun.logging.LogDomains;
//for jsr77
import com.sun.enterprise.deployment.io.ApplicationDeploymentDescriptorFile;
import com.sun.enterprise.deployment.io.EjbDeploymentDescriptorFile;
import com.sun.enterprise.deployment.node.J2EEDocumentBuilder;
import java.util.Iterator;
import com.sun.enterprise.deployment.EjbBundleDescriptor;
import javax.management.MBeanException;
import com.sun.enterprise.management.StateManageable;
import com.sun.enterprise.deployment.autodeploy.AutoDirReDeployer;
/**
* Manages all stand alone EJB modules. It also acts as an listener for
* the deployment events.
*
* @author Mahesh Kannan
* @author Nazrul Islam
* @since JDK1.4
*/
public class StandAloneEJBModulesManager extends AbstractManager
implements ModuleDeployEventListener {
/** logger to log core messages */
static Logger _logger = LogDomains.getLogger(LogDomains.CORE_LOGGER);
/** local string manager */
private static StringManager localStrings =
StringManager.getManager(StandAloneEJBModulesManager.class);
/**
* This manager is responsible for loading all stand alone ejb modules
* in an instance. It creates EJBModuleLoader for each deployed ejb module.
* EJBModuleLoader is responsible for further loading ejb containers for
* each module.
*
* <p>
* It is assumed that the next two params are set by the startup Code.
*
* @param ejbManager encapsulates application related info
* @param commonclassLoader the top level class loader. For now this
* can be the MainThread's ClassLoader.
*/
StandAloneEJBModulesManager(EjbModulesManager ejbManager,
ClassLoader parentClassLoader) {
super(parentClassLoader, ejbManager);
AdminEventListenerRegistry.addModuleDeployEventListener(this);
}
/**
* Returns a loader for stand alone ejb module.
*
* @param moduleId registration name of the ejb module
*
* @return a loader for the stand alone ejb module
*/
protected AbstractLoader getLoader(String moduleId) {
return new EJBModuleLoader(moduleId, this.parentClassLoader,
(EjbModulesManager)this.configManager);
}
private void holdRequest() { }
private void holdRequest(String appID) { }
// ---- START OF MonitorListener METHODS ----------------------------------
/**
* This is a callback from reload monitor when a change in time stamp
* for a stand alone ejb module is detected.
*
* @param entry monitored entry with a change in time stamp
* @return if stand alone ejb module was reloaded successfully
*/
public synchronized boolean reload(MonitorableEntry entry) {
String moduleName = entry.getId();
boolean status = false;
// redeploys the stand alone ejb module
try {
DeploymentRequest req = new DeploymentRequest(
this.configManager.getInstanceEnvironment(),
DeployableObjectType.EJB,
DeploymentCommand.DEPLOY);
// monitored file points to $APP_ROOT/.reload
req.setFileSource(entry.getMonitoredFile().getParentFile());
// application registration name
req.setName(moduleName);
// we are always trying a redeployment
req.setForced(true);
AutoDirReDeployer deployer = new AutoDirReDeployer(req);
status = deployer.redeploy();
} catch (IASDeploymentException de) {
_logger.log(Level.WARNING,"core.error_in_reload_ejb_module",de);
return false;
}
return status;
}
// ---- END OF MonitorListener METHODS ------------------------------------
private boolean moduleDeployed(boolean jsr77, String moduleName,
ConfigContext dynamicConfigContext)
{
return moduleDeployed(jsr77, moduleName, true, dynamicConfigContext);
}
private boolean moduleDeployed(boolean jsr77, String moduleName,
boolean addToRM, ConfigContext dynamicConfigContext)
{
boolean result = false;
boolean loadJSR77 = jsr77 || loadJSR77(moduleName, DeployableObjectType.EJB);
AbstractLoader modLoader = null;
try {
modLoader = getLoader(moduleName);
modLoader.setConfigContext(dynamicConfigContext);
// create root mBean for this module
if (loadJSR77) {
try {
modLoader.createRootMBean();
} catch (MBeanException mbe) {
_logger.log(Level.WARNING,
"core.error_while_creating_jsr77_root_mbean",mbe);
}
}
if (isEnabled(dynamicConfigContext, moduleName)) {
if (_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST,
"Loading enabled ejb module: " + moduleName);
}
//Check to see if the app is already loaded. If yes, do not reload.
if (id2loader.get(moduleName) != null) {
return true;
}
// set jsr77 state STARTING
try {
modLoader.setState(StateManageable.STARTING_STATE);
} catch (MBeanException mbe) {
_logger.log(Level.WARNING,
"core.error_while_setting_jsr77_state",mbe);
}
boolean retSts = modLoader.load(jsr77);
if (retSts) {
this.id2loader.put(moduleName, modLoader);
// adds the ejb module to be monitored if ON
if (addToRM) {
addToReloadMonitor(moduleName);
}
// set jsr77 state to RUNNING
try {
modLoader.setState(StateManageable.RUNNING_STATE);
} catch (MBeanException mbe) {
_logger.log(Level.WARNING,
"core.error_while_setting_jsr77_state",mbe);
}
result = true;
} else {
if (loadJSR77) {
// delete root and leaf mBeans for this module
try {
modLoader.deleteLeafAndRootMBeans();
} catch (MBeanException mbe) {
_logger.log(Level.WARNING,
"core.error_while_deleting_jsr77_root_and_leaf_mbeans",mbe);
}
} else {
// set jsr77 state FAILED
try {
modLoader.setState(StateManageable.FAILED_STATE);
} catch (MBeanException mbe) {
_logger.log(Level.WARNING,
"core.error_while_setting_jsr77_state",mbe);
}
}
_logger.log(Level.WARNING,
"core.error_while_loading_ejb_module");
}
} else {
_logger.log(Level.INFO, "core.ejb_module_disabled", moduleName);
//setting result to false since module was disabled
result = false;
}
} catch (ConfigException ce) {
_logger.log(Level.WARNING,"core.error_while_loading_ejb_module",ce);
result = false;
} finally {
//To ensure that the config context is not reused...
if (modLoader != null) {
modLoader.setConfigContext(null);
}
}
return result;
}
/**
* Unloads the given stand alone ejb module.
* This removes this ejb module from reload monitor list.
* This gets called when the ejb module is undeployed.
*
* @param moduleName name of the stand alone ejb module
* @return true if module was unloaded successfully
*
* @throws ConfigException if an error while reading data from config
*/
private boolean moduleUnDeployed(String moduleName) {
return moduleUnDeployed(false, moduleName);
}
/**
* Unloads the given stand alone ejb module.
* This removes this ejb module from reload monitor list.
* This gets called when the ejb module is undeployed.
*
* @param jsr77 delete jsr77 mBeans if true
* @param moduleName name of the stand alone ejb module
* @return true if module was unloaded successfully
*
* @throws ConfigException if an error while reading data from config
*/
private boolean moduleUnDeployed(boolean jsr77, String moduleName) {
return moduleUnDeployed(jsr77, moduleName, true);
}
/**
* Unloads the given ejb module.
*
* @param jsr77 delete jsr77 mBeans if true
* @param moduleName name of the stand alone ejb module
* @param clearRM reloadMonitor, reload if true
* @return true if module was unloaded successfully
*
* @throws ConfigException if an error while reading data from config
*/
private boolean moduleUnDeployed(boolean jsr77, String moduleName, boolean clearRM) {
EJBModuleLoader modLoader =
(EJBModuleLoader) this.id2loader.remove(moduleName);
// removes this ejb module from reload monitor
if (clearRM) {
removeFromReloadMonitor(moduleName);
}
// module is not in the registry - must have been undeployed
if (modLoader == null) {
return true;
}
// set jsr77 state to STOPPING
try {
modLoader.setState(StateManageable.STOPPING_STATE);
} catch (MBeanException mbe) {
_logger.log(Level.WARNING,
"core.error_while_setting_jsr77_state",mbe);
}
Application app = modLoader.getApplication();
RoleMapper.removeRoleMapper(app.getRoleMapper().getName());
if (jsr77) {
// delete jsr77 mBean for this ejbModule
try {
modLoader.deleteRootMBean();
} catch (MBeanException mbe) {
_logger.log(Level.WARNING,
"core.error_while_deleting_jsr77_root_mbean",mbe);
}
} else {
// set jsr77 state to STOPPED
try {
modLoader.setState(StateManageable.STOPPED_STATE);
} catch (MBeanException mbe) {
_logger.log(Level.WARNING,
"core.error_while_setting_jsr77_state",mbe);
}
}
boolean undeployed = modLoader.unload(jsr77);
if (undeployed) {
_logger.log(Level.INFO,
"core.ejb_module_unload_successful", moduleName);
} else {
_logger.log(Level.INFO,
"core.ejb_module_not_unloaded", moduleName);
}
return undeployed;
}
// ---- START OF ModuleDeployEventListener METHODS ------------------------
/**
* Invoked when a standalone J2EE module is deployed.
*/
public synchronized void moduleDeployed(ModuleDeployEvent event)
throws AdminEventListenerException {
boolean jsr77 = false;
if (event.getModuleTypeCode() == event.TYPE_EJBMODULE_CODE) {
DeployEventListenerHelper.getDeployEventListenerHelper().synchronize(event);
String modID = event.getModuleName();
if (_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST,
"Deploying EJB Module: " + modID);
}
try {
// refreshes the config context with the context from this event
this.configManager.refreshConfigContext(
event.getConfigContext() );
// set jsr77 flag
String action = event.getAction();
if ((action.equals(BaseDeployEvent.DEPLOY)) ||
(action.equals(BaseDeployEvent.REDEPLOY))) {
jsr77 = true;
}
if (isEnabled(event.getConfigContext(), modID) &&
!moduleDeployed(jsr77, modID, event.getConfigContext())) {
String msg = localStrings.getString(
"standaloneejbmodulesmgr.ejbmodule_deployed_failed",
modID);
registerException(event, msg);
}
} catch (ConfigException ce) {
throw new AdminEventListenerException(ce.getMessage());
}
}
}
/**
* Invoked when a standalone J2EE module is undeployed.
*/
public synchronized void moduleUndeployed(ModuleDeployEvent event)
throws AdminEventListenerException {
boolean jsr77 = false;
String action = event.getAction();
if ((action.equals(BaseDeployEvent.UNDEPLOY)) ||
(action.equals(BaseDeployEvent.REDEPLOY))) {
jsr77 = true;
}
try {
if (event.getModuleTypeCode() == event.TYPE_EJBMODULE_CODE) {
String modID = event.getModuleName();
if (_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST,
"Undeploying EJB Module: " + modID);
}
// refreshes the config context with the context from this event
this.configManager.refreshConfigContext(
event.getOldConfigContext() );
boolean undeployed = moduleUnDeployed(jsr77, modID);
if (!undeployed) {
String msg = localStrings.getString(
"standaloneejbmodulesmgr.ejbmodule_undeployed_failed",
modID);
registerException(event, msg);
}
}
} catch (ConfigException ce) {
throw new AdminEventListenerException(ce.getMessage());
}
}
/**
* Invoked when a standalone J2EE module is redeployed.
*/
public synchronized void moduleRedeployed(ModuleDeployEvent event)
throws AdminEventListenerException {
if (event.getModuleTypeCode() == event.TYPE_EJBMODULE_CODE) {
String modID = event.getModuleName();
if (_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST,
"Redeploying EJB Module: " + modID);
}
moduleUndeployed(event);
moduleDeployed(event);
}
}
/**
* Invoked when a standalone J2EE module is enabled.
*/
public synchronized void moduleEnabled(ModuleDeployEvent event)
throws AdminEventListenerException {
if (event.getModuleTypeCode() == event.TYPE_EJBMODULE_CODE) {
String modID = event.getModuleName();
if (!isEnabled(event.getConfigContext(), modID)) {
return;
}
if (_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST, "Enabling EJB Module: " + modID);
}
moduleDeployed(event);
}
}
/**
* Invoked when a standalone J2EE module is disabled.
*/
public synchronized void moduleDisabled(ModuleDeployEvent event)
throws AdminEventListenerException {
if (event.getModuleTypeCode() == event.TYPE_EJBMODULE_CODE) {
String modID = event.getModuleName();
if (_logger.isLoggable(Level.FINEST)) {
_logger.log(Level.FINEST,
"Disabling EJB Module: " + modID);
}
moduleUndeployed(event);
}
}
/**
* Invoked when a reference is created from a
* server instance (or cluster) to a particular module.
*
* @throws AdminEventListenerException when the listener is unable to
* process the event.
*/
public void moduleReferenceAdded(ModuleDeployEvent event)
throws AdminEventListenerException {
}
/**
* Invoked when a reference is removed from a
* server instance (or cluster) to a particular module.
*
* @throws AdminEventListenerException when the listener is unable to
* process the event.
*/
public void moduleReferenceRemoved(ModuleDeployEvent event)
throws AdminEventListenerException {
}
// ---- END OF ModuleDeployEventListener METHODS ------------------------
}
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