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*
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*
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* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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* file and include the License file at packager/legal/LICENSE.txt.
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*
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*/
// Portions Copyright [2016-2021] [Payara Foundation and/or its affiliates]
package org.glassfish.ejb.persistent.timer;
import java.io.Serializable;
import java.io.IOException;
import java.io.ObjectStreamException;
import java.util.Date;
import java.util.Collection;
import java.util.Iterator;
import java.util.Set;
import java.util.HashSet;
import java.util.logging.Logger;
import java.util.logging.Level;
import jakarta.ejb.CreateException;
import jakarta.ejb.FinderException;
import jakarta.ejb.SessionContext;
import jakarta.ejb.Stateless;
import jakarta.ejb.TimerConfig;
import jakarta.persistence.EntityManager;
import jakarta.persistence.Query;
import jakarta.persistence.PersistenceContext;
import jakarta.annotation.Resource;
import javax.naming.InitialContext;
import javax.sql.DataSource;
import java.sql.Connection;
import com.sun.ejb.containers.EJBContextImpl;
import com.sun.ejb.containers.EJBTimerService;
import com.sun.ejb.containers.EjbContainerUtilImpl;
import com.sun.ejb.containers.EJBTimerSchedule;
import com.sun.ejb.containers.TimerPrimaryKey;
/**
* TimerBean is a facade for the persistent state of an EJB Timer.
* It is part of the EJB container and is implemented using
* Java Persistence API. The standard JPA behavior is useful in
* implementing the transactional properties of EJB timers.
* When an EJB timer is created by an application, it is not
* eligible for expiration until the transaction commits.
* Likewise, if a timer is cancelled and the transaction rolls
* back, the timer must be reactivated.
* To accomplish this, TimerBean registers callbacks with the
* transaction manager and interacts with the EJBTimerService
* accordingly.
*
* @author Kenneth Saks
* @author Marina Vatkina
*/
@Stateless
public class TimerBean implements TimerLocal {
private static final Logger logger = EjbContainerUtilImpl.getLogger();
@Resource private SessionContext context_;
@PersistenceContext(unitName="__EJB__Timer__App")
private EntityManager em;
// Find Timer by Id
public TimerState findTimer(TimerPrimaryKey timerId) {
return em.find(TimerState.class, timerId);
}
//
// Query methods for timer ids
//
public Set findTimerIdsByContainer(long containerId) {
Query q = em.createNamedQuery("findTimerIdsByContainer");
q.setParameter(1, containerId);
return toPKeys(q.getResultList());
}
public Set findTimerIdsByContainerAndState
(long containerId, int state) {
Query q = em.createNamedQuery("findTimerIdsByContainerAndState");
q.setParameter(1, containerId);
q.setParameter(2, state);
return toPKeys(q.getResultList());
}
public Set findTimerIdsByContainersAndState
(Collection containerIds, int state) {
Query q = em.createNamedQuery("findTimerIdsByContainersAndState");
q.setParameter(1, containerIds);
q.setParameter(2, state);
return toPKeys(q.getResultList());
}
public Set findTimerIdsByContainerAndOwner
(long containerId, String ownerId) {
Query q = em.createNamedQuery("findTimerIdsByContainerAndOwner");
q.setParameter(1, containerId);
q.setParameter(2, ownerId);
return toPKeys(q.getResultList());
}
public Set findTimerIdsByContainerAndOwnerAndState
(long containerId, String ownerId, int state) {
Query q = em.createNamedQuery("findTimerIdsByContainerAndOwnerAndState");
q.setParameter(1, containerId);
q.setParameter(2, ownerId);
q.setParameter(3, state);
return toPKeys(q.getResultList());
}
public Set findTimerIdsByOwner(String ownerId) {
Query q = em.createNamedQuery("findTimerIdsByOwner");
q.setParameter(1, ownerId);
return toPKeys(q.getResultList());
}
public Set findTimerIdsByOwnerAndState
(String ownerId, int state) {
Query q = em.createNamedQuery("findTimerIdsByOwnerAndState");
q.setParameter(1, ownerId);
q.setParameter(2, state);
return toPKeys(q.getResultList());
}
//
// Query methods for timer beans
// XXX These methods return Sets XXX
//
public Set findTimersByContainer(long containerId) {
Query q = em.createNamedQuery("findTimersByContainer");
q.setParameter(1, containerId);
return new HashSet(q.getResultList());
}
public Set findTimersByContainerAndState
(long containerId, int state) {
Query q = em.createNamedQuery("findTimersByContainerAndState");
q.setParameter(1, containerId);
q.setParameter(2, state);
return new HashSet(q.getResultList());
}
public Set findTimersByContainerAndOwner
(long containerId, String ownerId) {
Query q = em.createNamedQuery("findTimersByContainerAndOwner");
q.setParameter(1, containerId);
q.setParameter(2, ownerId);
return new HashSet(q.getResultList());
}
public Set findTimersByContainerAndOwnerAndState
(long containerId, String ownerId, int state) {
Query q = em.createNamedQuery("findTimersByContainerAndOwnerAndState");
q.setParameter(1, containerId);
q.setParameter(2, ownerId);
q.setParameter(3, state);
return new HashSet(q.getResultList());
}
private Set findTimersByOwner(String ownerId) {
Query q = em.createNamedQuery("findTimersByOwner");
q.setParameter(1, ownerId);
return new HashSet(q.getResultList());
}
public Set findTimersByOwnerAndState
(String ownerId, int state) {
Query q = em.createNamedQuery("findTimersByOwnerAndState");
q.setParameter(1, ownerId);
q.setParameter(2, state);
return new HashSet(q.getResultList());
}
//
// Query methods for timer counts
//
public int countTimersByApplication(long applicationId) {
Query q = em.createNamedQuery("countTimersByApplication");
q.setParameter(1, applicationId);
return ((Number)q.getSingleResult()).intValue();
}
public int countTimersByContainer(long containerId) {
Query q = em.createNamedQuery("countTimersByContainer");
q.setParameter(1, containerId);
return ((Number)q.getSingleResult()).intValue();
}
public int countTimersByContainerAndState
(long containerId, int state) {
Query q = em.createNamedQuery("countTimersByContainerAndState");
q.setParameter(1, containerId);
q.setParameter(2, state);
return ((Number)q.getSingleResult()).intValue();
}
public int countTimersByContainerAndOwner
(long containerId, String ownerId) {
Query q = em.createNamedQuery("countTimersByContainerAndOwner");
q.setParameter(1, containerId);
q.setParameter(2, ownerId);
return ((Number)q.getSingleResult()).intValue();
}
public int countTimersByContainerAndOwnerAndState
(long containerId, String ownerId, int state) {
Query q = em.createNamedQuery("countTimersByContainerAndOwnerAndState");
q.setParameter(1, containerId);
q.setParameter(2, ownerId);
q.setParameter(3, state);
return ((Number)q.getSingleResult()).intValue();
}
public int countTimersByOwner(String ownerId) {
Query q = em.createNamedQuery("countTimersByOwner");
q.setParameter(1, ownerId);
return ((Number)q.getSingleResult()).intValue();
}
public int countTimersByOwnerAndState
(String ownerId, int state) {
Query q = em.createNamedQuery("countTimersByOwnerAndState");
q.setParameter(1, ownerId);
q.setParameter(2, state);
return ((Number)q.getSingleResult()).intValue();
}
//
// These data members contain derived state for
// some immutable fields.
//
// deserialized state from blob
private boolean blobLoaded_;
private Object timedObjectPrimaryKey_;
private transient Serializable info_;
public TimerState createTimer
(String timerId, long containerId, long applicationId, String ownerId,
Object timedObjectPrimaryKey,
Date initialExpiration, long intervalDuration,
EJBTimerSchedule schedule, TimerConfig timerConfig)
throws CreateException {
TimerState timer = null;
try {
timer = new TimerState (timerId, containerId, applicationId, ownerId,
timedObjectPrimaryKey, initialExpiration,
intervalDuration, schedule, timerConfig.getInfo());
} catch(IOException ioe) {
CreateException ce = new CreateException();
ce.initCause(ioe);
throw ce;
}
if( logger.isLoggable(Level.FINE) ) {
logger.log(Level.FINE, "TimerBean.createTimer() ::timerId=" +
timer.getTimerId() + " ::containerId=" + timer.getContainerId() +
" ::applicationId=" + timer.getApplicationId() +
" ::timedObjectPK=" + timedObjectPrimaryKey +
" ::info=" + timerConfig.getInfo() +
" ::schedule=" + timer.getSchedule() +
" ::persistent=" + timerConfig.isPersistent() +
" ::initialExpiration=" + initialExpiration +
" ::intervalDuration=" + intervalDuration +
" :::state=" + timer.stateToString() +
" :::creationTime=" + timer.getCreationTime() +
" :::ownerId=" + timer.getOwnerId());
}
//
// Only proceed with transactional semantics if this timer
// is owned by the current server instance. NOTE that this
// will *ALWAYS* be the case for timers created from EJB
// applications via the jakarta.ejb.EJBTimerService.create methods.
//
// For testing purposes, ejbCreate takes an ownerId parameter,
// which allows us to easily simulate other server instances
// by creating timers for them. In those cases, we don't need
// the timer transaction semantics and ejbTimeout logic. Simulating
// the creation of timers for the same application and different
// server instances from a script is difficult since the
// containerId is not generated until after deployment.
//
try {
EJBTimerService.getPersistentTimerService().addTimerSynchronization((EJBContextImpl)context_,
timerId, initialExpiration, containerId, ownerId);
} catch(Exception e) {
CreateException ce = new CreateException();
ce.initCause(e);
throw ce;
}
em.persist(timer);
return timer;
}
private String getOwnerIdOfThisServer() {
return EJBTimerService.getPersistentTimerService().getOwnerIdOfThisServer();
}
public void remove(TimerPrimaryKey timerId) {
TimerState timer = em.find(TimerState.class, timerId);
if (timer != null) {
em.remove(timer);
}
}
public void remove(Set timerIds) {
for(TimerPrimaryKey timerId: timerIds) {
try {
remove(timerId);
} catch(Exception e) {
logger.log(Level.FINE, "Cannot remove timer " + timerId +
" for unknown container ", e);
}
}
}
public void cancel(TimerPrimaryKey timerId)
throws FinderException, Exception {
TimerState timer = em.find(TimerState.class, timerId);
// If timer is null need to throw a FinderException so
// that the caller can handle it.
if( timer == null) {
throw new FinderException("timer " + timerId + " does not exist");
}
// First set the timer to the cancelled state. This step is
// performed whether or not the current server instance owns
// the timer.
if( timer.getState() == EJBTimerService.STATE_CANCELLED ) {
// already cancelled or removed
return;
}
timer.setState(EJBTimerService.STATE_CANCELLED);
EJBTimerService
.getPersistentTimerService()
.cancelTimerSynchronization(
(EJBContextImpl) context_,
timerId,
timer.getContainerId(),
timer.getOwnerId()
);
// XXX ???? WHY WAS IT: NOTE that it's the caller's responsibility to call remove().
em.remove(timer);
return;
}
public void cancelTimers(Collection timers) {
for(TimerState timer : timers) {
try {
em.remove(timer);
} catch(Exception e) {
logger.log(Level.WARNING, "ejb.cancel_entity_timer",
new Object[] { timer.getTimerId() });
logger.log(Level.WARNING, "", e);
}
}
}
private Set toPKeys(Collection ids) {
Set pkeys = new HashSet();
for(Iterator iter = ids.iterator(); iter.hasNext();) {
pkeys.add(new TimerPrimaryKey((String) iter.next()));
}
return pkeys;
}
//
// Other query methods for timer ids
//
public Set findActiveTimerIdsByContainer(long containerId) {
return findTimerIdsByContainerAndState(containerId,
EJBTimerService.STATE_ACTIVE);
}
public Set findActiveTimerIdsByContainers(Collection containerIds) {
return findTimerIdsByContainersAndState(containerIds,
EJBTimerService.STATE_ACTIVE);
}
public Set findCancelledTimerIdsByContainer(long containerId) {
return findTimerIdsByContainerAndState(containerId,
EJBTimerService.STATE_CANCELLED);
}
public Set findTimerIdsOwnedByThisServerByContainer
(long containerId) {
return findTimerIdsByContainerAndOwner
(containerId, getOwnerIdOfThisServer());
}
public Set findActiveTimerIdsOwnedByThisServerByContainer
(long containerId) {
return findTimerIdsByContainerAndOwnerAndState
(containerId, getOwnerIdOfThisServer(),
EJBTimerService.STATE_ACTIVE);
}
public Set findCancelledTimerIdsOwnedByThisServerByContainer
(long containerId) {
return findTimerIdsByContainerAndOwnerAndState
(containerId, getOwnerIdOfThisServer(),
EJBTimerService.STATE_CANCELLED);
}
public Set findTimerIdsOwnedByThisServer() {
return findTimerIdsByOwner(getOwnerIdOfThisServer());
}
public Set findActiveTimerIdsOwnedByThisServer() {
return findTimerIdsByOwnerAndState
(getOwnerIdOfThisServer(),
EJBTimerService.STATE_ACTIVE);
}
public Set findCancelledTimerIdsOwnedByThisServer() {
return findTimerIdsByOwnerAndState
(getOwnerIdOfThisServer(),
EJBTimerService.STATE_CANCELLED);
}
public Set findTimerIdsOwnedBy(String ownerId) {
return findTimerIdsByOwner(ownerId);
}
public Set findActiveTimerIdsOwnedBy(String ownerId) {
return findTimerIdsByOwnerAndState(ownerId,
EJBTimerService.STATE_ACTIVE);
}
public Set findCancelledTimerIdsOwnedBy(String ownerId) {
return findTimerIdsByOwnerAndState(ownerId,
EJBTimerService.STATE_CANCELLED);
}
//
// Helper query methods for timer beans
//
public Set findActiveTimersByContainer(long containerId) {
return findTimersByContainerAndState(containerId,
EJBTimerService.STATE_ACTIVE);
}
public Set findCancelledTimersByContainer(long containerId) {
return findTimersByContainerAndState
(containerId, EJBTimerService.STATE_CANCELLED);
}
public Set findTimersOwnedByThisServerByContainer
(long containerId) {
return findTimersByContainerAndOwner
(containerId, getOwnerIdOfThisServer());
}
public Set findActiveTimersOwnedByThisServerByContainer
(long containerId) {
return findTimersByContainerAndOwnerAndState
(containerId, getOwnerIdOfThisServer(),
EJBTimerService.STATE_ACTIVE);
}
public Set findCancelledTimersOwnedByThisServerByContainer
(long containerId) {
return findTimersByContainerAndOwnerAndState
(containerId, getOwnerIdOfThisServer(),
EJBTimerService.STATE_CANCELLED);
}
public Set findTimersOwnedByThisServer() {
return findTimersByOwner(getOwnerIdOfThisServer());
}
public Set findActiveTimersOwnedByThisServer() {
return findTimersByOwnerAndState
(getOwnerIdOfThisServer(),
EJBTimerService.STATE_ACTIVE);
}
public Set findCancelledTimersOwnedByThisServer() {
return findTimersByOwnerAndState
(getOwnerIdOfThisServer(),
EJBTimerService.STATE_CANCELLED);
}
public Set findTimersOwnedBy(String ownerId) {
return findTimersByOwner(ownerId);
}
public Set findActiveTimersOwnedBy(String ownerId) {
return findTimersByOwnerAndState(ownerId,
EJBTimerService.STATE_ACTIVE);
}
public Set findCancelledTimersOwnedBy(String ownerId) {
return findTimersByOwnerAndState(ownerId,
EJBTimerService.STATE_CANCELLED);
}
//
// Helper query methods for timer counts
//
public int countActiveTimersByContainer(long containerId) {
return countTimersByContainerAndState(containerId,
EJBTimerService.STATE_ACTIVE);
}
public int countCancelledTimersByContainer(long containerId) {
return countTimersByContainerAndState(containerId,
EJBTimerService.STATE_CANCELLED);
}
public int countTimersOwnedByThisServerByContainer
(long containerId) {
return countTimersByContainerAndOwner
(containerId, getOwnerIdOfThisServer());
}
public int countActiveTimersOwnedByThisServerByContainer
(long containerId) {
return countTimersByContainerAndOwnerAndState
(containerId, getOwnerIdOfThisServer(),
EJBTimerService.STATE_ACTIVE);
}
public int countCancelledTimersOwnedByThisServerByContainer
(long containerId) {
return countTimersByContainerAndOwnerAndState
(containerId, getOwnerIdOfThisServer(),
EJBTimerService.STATE_CANCELLED);
}
public int countTimersOwnedByThisServer() {
return countTimersByOwner(getOwnerIdOfThisServer());
}
public String[] countTimersOwnedByServerIds(String[] serverIds) {
String[] totalTimers = new String[ serverIds.length ];
int i = 0;
for (String serverId : serverIds) {
totalTimers[i] = Integer.toString(
countTimersOwnedBy(serverId));
i++;
}
return totalTimers;
}
public int countActiveTimersOwnedByThisServer() {
return countTimersByOwnerAndState
(getOwnerIdOfThisServer(),
EJBTimerService.STATE_ACTIVE);
}
public int countCancelledTimersOwnedByThisServer() {
return countTimersByOwnerAndState
(getOwnerIdOfThisServer(),
EJBTimerService.STATE_CANCELLED);
}
public int countTimersOwnedBy(String ownerId) {
return countTimersByOwner(ownerId);
}
public int countActiveTimersOwnedBy(String ownerId) {
return countTimersByOwnerAndState(ownerId,
EJBTimerService.STATE_ACTIVE);
}
public int countCancelledTimersOwnedBy(String ownerId) {
return countTimersByOwnerAndState(ownerId,
EJBTimerService.STATE_CANCELLED);
}
public boolean checkStatus(String resourceJndiName,
boolean checkDatabase) {
boolean success = false;
Connection connection = null;
try {
InitialContext ic = new InitialContext();
DataSource dataSource = (DataSource) ic.lookup(resourceJndiName);
if( checkDatabase ) {
connection = dataSource.getConnection();
connection.close();
connection = null;
// Now try to a query that will access the timer table itself.
// Use a query that won't return a lot of data(even if the
// table is large) to reduce the overhead of this check.
countTimersByContainer(0);
}
success = true;
} catch(Exception e) {
logger.log(Level.WARNING, "ejb.timer_service_init_error",
"");
// Log exception itself at FINE level. The most likely cause
// is a connection error when the database is not started. This
// is already logged twice by the jdbc layer.
logger.log(Level.FINE, "ejb.timer_service_init_error", e);
} finally {
if( connection != null ) {
try {
connection.close();
} catch(Exception e) {
logger.log(Level.FINE, "timer connection close exception",
e);
}
}
}
return success;
}
public int migrateTimers(String fromOwnerId, String toOwnerId) {
Query q = em.createNamedQuery("updateTimersFromOwnerToNewOwner");
q.setParameter("fromOwner", fromOwnerId);
q.setParameter("toOwner", toOwnerId);
return q.executeUpdate();
}
public int deleteTimersByContainer(long containerId) {
Query q = em.createNamedQuery("deleteTimersByContainer");
q.setParameter("containerId", containerId);
return q.executeUpdate();
}
public int deleteTimersByApplication(long applicationId) {
Query q = em.createNamedQuery("deleteTimersByApplication");
q.setParameter("applicationId", applicationId);
return q.executeUpdate();
}
/**
* To be used to read in TimerBean.Blob and replace with TimerState.Blob
* on v2.x upgrade
*/
public static class Blob implements Serializable {
private byte[] primaryKeyBytes_ = null;
private byte[] infoBytes_ = null;
private static final long serialVersionUID = 9167806434435988868L;
private Object readResolve() throws ObjectStreamException {
return new TimerState.Blob(primaryKeyBytes_, infoBytes_);
}
}
}
