/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package com.taobao.datasource.resource.connectionmanager;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Iterator;
import java.util.Map;
import javax.resource.ResourceException;
import javax.resource.spi.ConnectionRequestInfo;
import javax.resource.spi.ManagedConnectionFactory;
import javax.security.auth.Subject;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import org.jboss.logging.Logger;
import EDU.oswego.cs.dl.util.concurrent.ConcurrentReaderHashMap;
import com.taobao.datasource.Service;
import com.taobao.datasource.resource.JBossResourceException;
import com.taobao.datasource.resource.adapter.jdbc.local.LocalTxDataSource;
import com.taobao.datasource.resource.connectionmanager.InternalManagedConnectionPool.PoolParams;
import com.taobao.datasource.tm.TransactionLocal;
/**
* The JBossManagedConnectionPool mbean configures and supplies pooling of
* JBossConnectionEventListeners to the BaseConnectionManager2 mbean.
* <p>
*
* It may be replaced by any mbean with a readable ManagedConnectionPool
* attribute of type ManagedConnectionPool. Normal pooling parameters are
* supplied, and the criteria to distinguish ManagedConnections is set in the
* Criteria attribute.
*
* @author <a href="mailto:d_jencks@users.sourceforge.net">David Jencks</a>
* @author <a href="mailto:adrian@jboss.org">Adrian Brock</a>
* @author <a href="weston.price@jboss.com">Weston Price</a>
*
* @version $Revision: 59880 $
*/
public class JBossManagedConnectionPool implements JBossManagedConnectionPoolMBean, Service {
/** The log */
private static final Logger log = Logger.getLogger(JBossManagedConnectionPool.class);
/** The pooling criteria */
private String criteria = "ByNothing";
/** The pooling strategy */
private ManagedConnectionPool poolingStrategy;
/** The pooling parameters */
private final InternalManagedConnectionPool.PoolParams poolParams = new InternalManagedConnectionPool.PoolParams();
/** Whether to use separate pools for transactional and non-transaction use */
private boolean noTxSeparatePools;
private ManagedConnectionFactory mcf;
private String state;
private LocalTxDataSource dataSource;
private String name;
public ManagedConnectionPool getPoolingStrategy() {
return poolingStrategy;
}
public void setName(String name) {
this.name = name;
}
public void setManagedConnectionFactory(ManagedConnectionFactory managedConnectionFactory) {
this.mcf = managedConnectionFactory;
}
public void setDataSource(LocalTxDataSource dataSource) {
this.dataSource = dataSource;
}
public void flush() {
if (getPoolingStrategy() == null)
throw new IllegalStateException("The connection pool is not started");
getPoolingStrategy().flush();
if (getPoolingStrategy() instanceof PreFillPoolSupport) {
final PreFillPoolSupport pfs = (PreFillPoolSupport) getPoolingStrategy();
if (pfs.shouldPreFill())
pfs.prefill(noTxSeparatePools);
}
}
public long getAvailableConnectionCount() {
return (getPoolingStrategy() == null) ? 0 : getPoolingStrategy().getAvailableConnectionCount();
}
public boolean getBackGroundValidation() {
return poolParams.backgroundValidation;
}
public long getBackGroundValidationMinutes() {
return poolParams.backgroundInterval / (1000 * 60);
}
public int getBlockingTimeoutMillis() {
return poolParams.blockingTimeout;
}
public int getConnectionCount() {
return (getPoolingStrategy() == null) ? 0 : getPoolingStrategy().getConnectionCount();
}
public int getConnectionCreatedCount() {
return (getPoolingStrategy() == null) ? 0 : getPoolingStrategy().getConnectionCreatedCount();
}
public int getConnectionDestroyedCount() {
return (getPoolingStrategy() == null) ? 0 : getPoolingStrategy().getConnectionDestroyedCount();
}
public String getCriteria() {
return criteria;
}
public long getIdleTimeoutMinutes() {
return poolParams.idleTimeout / (1000 * 60);
}
public long getInUseConnectionCount() {
return (getPoolingStrategy() == null) ? 0 : getPoolingStrategy().getInUseConnectionCount();
}
public long getMaxConnectionsInUseCount() {
return (getPoolingStrategy() == null) ? 0 : getPoolingStrategy().getMaxConnectionsInUseCount();
}
public int getMaxSize() {
return poolParams.maxSize;
}
public int getMinSize() {
return poolParams.minSize;
}
public boolean getNoTxSeparatePools() {
return noTxSeparatePools;
}
public boolean getPreFill() {
return poolParams.prefill;
}
public String getState() {
return state;
}
public boolean getUseFastFail() {
return poolParams.useFastFail;
}
public void setBackGroundValidation(boolean backgroundValidation) {
poolParams.backgroundValidation = backgroundValidation;
}
public void setBackGroundValidationMinutes(long backgroundValidationInterval) {
poolParams.backgroundInterval = backgroundValidationInterval * 1000 * 60;
}
public void setBlockingTimeoutMillis(int newBlockingTimeout) {
poolParams.blockingTimeout = newBlockingTimeout;
}
public void setCriteria(String newCriteria) {
this.criteria = newCriteria;
}
public void setIdleTimeoutMinutes(long newIdleTimeoutMinutes) {
poolParams.idleTimeout = newIdleTimeoutMinutes * 1000 * 60;
}
public void setMaxSize(int newMaxSize) {
poolParams.maxSize = newMaxSize;
}
public void setMinSize(int newMinSize) {
poolParams.minSize = newMinSize;
}
public void setNoTxSeparatePools(boolean value) {
this.noTxSeparatePools = value;
}
public void setPreFill(boolean prefill) {
poolParams.prefill = prefill;
}
public void setUseFastFail(boolean useFastFail) {
poolParams.useFastFail = useFastFail;
}
public void start() throws Exception {
state = STARTING;
dataSource.start();
state = STARTED;
}
public void stop() throws Exception {
state = STOPPING;
dataSource.stop();
state = STOPPED;
}
public void startService() throws Exception {
if ("ByContainerAndApplication".equals(criteria))
poolingStrategy = new PoolBySubjectAndCri(mcf, name, poolParams, noTxSeparatePools, log);
else if ("ByContainer".equals(criteria))
poolingStrategy = new PoolBySubject(mcf, name, poolParams, noTxSeparatePools, log);
else if ("ByApplication".equals(criteria))
poolingStrategy = new PoolByCri(mcf, name, poolParams, noTxSeparatePools, log);
else
// "ByNothing".equals(criteria)
poolingStrategy = new OnePool(mcf, name, poolParams, noTxSeparatePools, log);
}
public void stopService() throws Exception {
if (poolingStrategy != null)
poolingStrategy.shutdown();
poolingStrategy = null;
}
public static class SubPoolContext {
/** The subpool */
private InternalManagedConnectionPool subPool;
/** The track by transaction transaction local */
private TransactionLocal trackByTx;
/**
* Create a new SubPoolContext.
*
* @param tm the transaction manager
* @param mcf the managed connection factory
* @param clf the connection listener factory
* @param subject the subject
* @param cri the connection request info
* @param poolParams the pool parameters
* @param log the log
*/
public SubPoolContext(TransactionManager tm, ManagedConnectionFactory mcf, ConnectionListenerFactory clf,
Subject subject, ConnectionRequestInfo cri, PoolParams poolParams, Logger log) {
subPool = new InternalManagedConnectionPool(mcf, clf, subject, cri, poolParams, log);
if (tm != null)
trackByTx = new TransactionLocal(tm);
}
/**
* Get the sub pool
*
* @return the sub pool
*/
public InternalManagedConnectionPool getSubPool() {
return subPool;
}
/**
* Get the track by transaction
*
* @return the transaction local
*/
public TransactionLocal getTrackByTx() {
return trackByTx;
}
/**
* Initialize the subpool context
*/
public void initialize() {
subPool.initialize();
}
}
/**
* The base pool implementation
*/
public abstract static class BasePool implements ManagedConnectionPool, PreFillPoolSupport {
/** The subpools */
private final Map subPools = new ConcurrentReaderHashMap();
/** The managed connection factory */
private final ManagedConnectionFactory mcf;
/** The connection listener factory */
private ConnectionListenerFactory clf;
/** The pool parameters */
protected final InternalManagedConnectionPool.PoolParams poolParams;
/**
* Whether to use separate pools for transactional and non-transaction
* use
*/
protected boolean noTxSeparatePools;
/** The logger */
private final Logger log;
/** Is trace enabled */
private boolean traceEnabled = false;
/** The poolName */
private String poolName;
public BasePool(final ManagedConnectionFactory mcf, final InternalManagedConnectionPool.PoolParams poolParams,
final boolean noTxSeparatePools, final Logger log) {
this(mcf, null, poolParams, noTxSeparatePools, log);
}
/**
* Create a new base pool
*
* @param mcf the managed connection factory
* @param poolParams the pooling parameters
* @param log the log
*/
public BasePool(final ManagedConnectionFactory mcf, final String poolName,
final InternalManagedConnectionPool.PoolParams poolParams, final boolean noTxSeparatePools,
final Logger log) {
this.mcf = mcf;
this.poolParams = poolParams;
this.noTxSeparatePools = noTxSeparatePools;
this.log = log;
this.traceEnabled = log.isTraceEnabled();
this.poolName = poolName;
}
/**
* Retrieve the key for this request
*
* @param subject the subject
* @param cri the connection request information
* @return the key
* @throws ResourceException for any error
*/
protected abstract Object getKey(Subject subject, ConnectionRequestInfo cri, boolean separateNoTx)
throws ResourceException;
public ManagedConnectionFactory getManagedConnectionFactory() {
return mcf;
}
public void setConnectionListenerFactory(ConnectionListenerFactory clf) {
this.clf = clf;
}
public ConnectionListener getConnection(Transaction trackByTransaction, Subject subject,
ConnectionRequestInfo cri) throws ResourceException {
// Determine the pool key for this request
boolean separateNoTx = false;
if (noTxSeparatePools)
separateNoTx = clf.isTransactional();
Object key = getKey(subject, cri, separateNoTx);
SubPoolContext subPool = getSubPool(key, subject, cri);
InternalManagedConnectionPool mcp = subPool.getSubPool();
// Are we doing track by connection?
TransactionLocal trackByTx = subPool.getTrackByTx();
// Simple case
if (trackByTransaction == null || trackByTx == null) {
ConnectionListener cl = mcp.getConnection(subject, cri);
if (traceEnabled)
dump("Got connection from pool " + cl);
return cl;
}
// Track by transaction
try {
trackByTx.lock(trackByTransaction);
} catch (Throwable t) {
JBossResourceException.rethrowAsResourceException("Unable to get connection from the pool for tx="
+ trackByTransaction, t);
}
try {
// Already got one
ConnectionListener cl = (ConnectionListener) trackByTx.get(trackByTransaction);
if (cl != null) {
if (traceEnabled)
dump("Previous connection tracked by transaction " + cl + " tx=" + trackByTransaction);
return cl;
}
} finally {
trackByTx.unlock(trackByTransaction);
}
// Need a new one for this transaction
// This must be done outside the tx local lock, otherwise
// the tx timeout won't work and get connection can do a lot of
// other work
// with many opportunities for deadlocks.
// Instead we do a double check after we got the transaction to see
// whether another thread beat us to the punch.
ConnectionListener cl = mcp.getConnection(subject, cri);
if (traceEnabled)
dump("Got connection from pool tracked by transaction " + cl + " tx=" + trackByTransaction);
// Relock and check/set status
try {
trackByTx.lock(trackByTransaction);
} catch (Throwable t) {
mcp.returnConnection(cl, false);
if (traceEnabled)
dump("Had to return connection tracked by transaction " + cl + " tx=" + trackByTransaction
+ " error=" + t.getMessage());
JBossResourceException.rethrowAsResourceException("Unable to get connection from the pool for tx="
+ trackByTransaction, t);
}
try {
// Check we weren't racing with another transaction
ConnectionListener other = (ConnectionListener) trackByTx.get(trackByTransaction);
if (other != null) {
mcp.returnConnection(cl, false);
if (traceEnabled)
dump("Another thread already got a connection tracked by transaction " + other + " tx="
+ trackByTransaction);
return other;
}
// This is the connection for this transaction
cl.setTrackByTx(true);
// FIXME Ӧ����trackByTx.set(trackByTransaction, cl)�ɣ�
trackByTx.set(cl);
if (traceEnabled)
dump("Using connection from pool tracked by transaction " + cl + " tx=" + trackByTransaction);
return cl;
} finally {
trackByTx.unlock(trackByTransaction);
}
}
public boolean shouldPreFill() {
return getPreFill();
}
public void prefill() {
prefill(null, null, false);
}
public void prefill(boolean noTxSeperatePool) {
prefill(null, null, noTxSeperatePool);
}
public void prefill(Subject subject, ConnectionRequestInfo cri, boolean noTxSeperatePool) {
if (getPreFill()) {
log.debug("Attempting to prefill pool for pool with name" + poolName);
try {
getSubPool(getKey(subject, cri, noTxSeparatePools), subject, cri);
} catch (Throwable t) {
// No real need to throw here being that pool remains in the
// same state as before.
log.error("Unable to prefill pool with name" + getPoolName(), t);
}
}
}
public void returnConnection(ConnectionListener cl, boolean kill) throws ResourceException {
cl.setTrackByTx(false);
InternalManagedConnectionPool mcp = (InternalManagedConnectionPool) cl.getContext();
mcp.returnConnection(cl, kill);
if (traceEnabled)
dump("Returning connection to pool " + cl);
}
/**
* Return the inuse count
*
* @return the count
*/
public int getInUseConnectionCount() {
int count = 0;
synchronized (subPools) {
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
count += subPool.getSubPool().getConnectionInUseCount();
}
}
return count;
}
public int getConnectionCount() {
int count = 0;
synchronized (subPools) {
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
count += subPool.getSubPool().getConnectionCount();
}
}
return count;
}
public String getPoolName() {
return poolName;
}
public boolean getPreFill() {
return this.poolParams.prefill;
}
public int getConnectionCreatedCount() {
int count = 0;
synchronized (subPools) {
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
count += subPool.getSubPool().getConnectionCreatedCount();
}
}
return count;
}
public int getConnectionDestroyedCount() {
int count = 0;
synchronized (subPools) {
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
count += subPool.getSubPool().getConnectionDestroyedCount();
}
}
return count;
}
public long getAvailableConnectionCount() {
long count = 0;
synchronized (subPools) {
if (subPools.size() == 0)
return poolParams.maxSize;
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
count += subPool.getSubPool().getAvailableConnections();
}
}
return count;
}
public int getMaxConnectionsInUseCount() {
int count = 0;
synchronized (subPools) {
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
count += subPool.getSubPool().getMaxConnectionsInUseCount();
}
}
return count;
}
public void shutdown() {
synchronized (subPools) {
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
subPool.getSubPool().shutdown();
}
subPools.clear();
}
}
public void flush() {
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
// FIXME Ӧ����subPool.getSubPool().flush()�ɣ�
subPool.getSubPool().shutdown();
}
subPools.clear();
}
/**
* For testing
*/
protected void shutdownWithoutClear() {
synchronized (subPools) {
for (Iterator i = subPools.values().iterator(); i.hasNext();) {
SubPoolContext subPool = (SubPoolContext) i.next();
subPool.getSubPool().shutdown();
}
}
}
/**
* Get any transaction manager associated with the pool
*
* @return the transaction manager
*/
protected TransactionManager getTransactionManager() {
if (clf != null)
return clf.getTransactionManagerInstance();
else
return null;
}
/**
* Determine the correct pool for this request, creates a new one when
* necessary
*
* @param key the key to the pool
* @param subject the subject of the pool
* @param cri the connection request info
* @return the subpool context
* @throws ResourceException for any error
*/
protected SubPoolContext getSubPool(Object key, Subject subject, ConnectionRequestInfo cri)
throws ResourceException {
SubPoolContext subPool = (SubPoolContext) subPools.get(key);
if (subPool == null) {
TransactionManager tm = getTransactionManager();
subPool = new SubPoolContext(tm, mcf, clf, subject, cri, poolParams, log);
synchronized (subPools) {
if (subPools.containsKey(key))
subPool = (SubPoolContext) subPools.get(key);
else {
subPool.initialize();
subPools.put(key, subPool);
}
}
}
return subPool;
}
protected SubPoolContext getSubPool(Object key) {
return null;
}
/**
* Dump the stats to the trace log
*
* @param info some context
*/
private void dump(String info) {
if (traceEnabled) {
StringBuffer toLog = new StringBuffer(100);
toLog.append(info).append(" [InUse/Available/Max]: [");
toLog.append(this.getInUseConnectionCount()).append("/");
toLog.append(this.getAvailableConnectionCount()).append("/");
toLog.append(this.poolParams.maxSize);
toLog.append("]");
;
log.trace(toLog);
}
}
}
/**
* Pooling by subject and connection request information
*/
public static class PoolBySubjectAndCri extends BasePool {
public PoolBySubjectAndCri(final ManagedConnectionFactory mcf,
final InternalManagedConnectionPool.PoolParams poolParams, final boolean noTxSeparatePools,
final Logger log) {
this(mcf, null, poolParams, noTxSeparatePools, log);
}
public PoolBySubjectAndCri(final ManagedConnectionFactory mcf, final String poolName,
final InternalManagedConnectionPool.PoolParams poolParams, final boolean noTxSeparatePools,
final Logger log) {
super(mcf, poolName, poolParams, noTxSeparatePools, log);
}
protected Object getKey(final Subject subject, final ConnectionRequestInfo cri, final boolean separateNoTx)
throws ResourceException {
return new SubjectCriKey(subject, cri, separateNoTx);
}
public void prefill() {
prefill(null, null, false);
}
public void prefill(boolean noTxSeperatePool) {
prefill(null, null, noTxSeperatePool);
}
public void prefill(Subject subject, ConnectionRequestInfo cri) {
prefill(subject, cri, false);
}
public void prefill(Subject subject, ConnectionRequestInfo cri, boolean noTxSeperatePool) {
if (getPreFill()) {
log.warn("Prefill pool option was selected for pool with name " + getPoolName()
+ " that does not support this feature.");
log
.warn("Please verify your *-ds.xml file that corresponds with this resource and either remove the <prefill>true|false</prefill element or explicitly set this value to false.");
}
}
}
/**
* Pool by subject and criteria
*/
private static class SubjectCriKey {
/** Identifies no subject */
private static final Subject NOSUBJECT = new Subject();
/** Identifies no connection request information */
private static final Object NOCRI = new Object();
/** The subject */
private final Subject subject;
/** The connection request information */
private final Object cri;
/** The cached hashCode */
private int hashCode = Integer.MAX_VALUE;
/** Separate no tx */
private boolean separateNoTx;
SubjectCriKey(Subject subject, ConnectionRequestInfo cri, boolean separateNoTx) {
this.subject = (subject == null) ? NOSUBJECT : subject;
this.cri = (cri == null) ? NOCRI : cri;
this.separateNoTx = separateNoTx;
}
public int hashCode() {
if (hashCode == Integer.MAX_VALUE)
hashCode = SubjectActions.hashCode(subject) ^ cri.hashCode();
return hashCode;
}
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null || (obj instanceof SubjectCriKey) == false)
return false;
SubjectCriKey other = (SubjectCriKey) obj;
return SubjectActions.equals(subject, other.subject) && cri.equals(other.cri)
&& separateNoTx == other.separateNoTx;
}
}
/**
* Pool by subject
*/
public static class PoolBySubject extends BasePool {
public PoolBySubject(final ManagedConnectionFactory mcf,
final InternalManagedConnectionPool.PoolParams poolParams, final boolean noTxSeparatePools,
final Logger log) {
this(mcf, null, poolParams, noTxSeparatePools, log);
}
public PoolBySubject(final ManagedConnectionFactory mcf, final String poolName,
final InternalManagedConnectionPool.PoolParams poolParams, final boolean noTxSeparatePools,
final Logger log) {
super(mcf, poolName, poolParams, noTxSeparatePools, log);
}
protected Object getKey(final Subject subject, final ConnectionRequestInfo cri, boolean separateNoTx) {
return new SubjectKey(subject, separateNoTx);
}
public void prefill() {
prefill(null, null, false);
}
public void prefill(boolean noTxSeperatePool) {
prefill(null, null, noTxSeperatePool);
}
public void prefill(Subject subject, ConnectionRequestInfo cri) {
prefill(subject, cri, false);
}
public void prefill(Subject subject, ConnectionRequestInfo cri, boolean noTxSeperatePool) {
if (getPreFill()) {
log.warn("Prefill pool option was selected for pool with name " + getPoolName()
+ " that does not support this feature.");
log
.warn("Please verify your *-ds.xml file that corresponds with this resource and either remove the <prefill>true|false</prefill element or explicitly set this value to false.");
}
}
}
/**
* Pool by subject
*/
private static class SubjectKey {
/** Identifies no subject */
private static final Subject NOSUBJECT = new Subject();
/** The subject */
private final Subject subject;
/** Separate no tx */
private boolean separateNoTx;
/** The cached hashCode */
private int hashCode = Integer.MAX_VALUE;
SubjectKey(Subject subject, boolean separateNoTx) {
this.subject = (subject == null) ? NOSUBJECT : subject;
this.separateNoTx = separateNoTx;
}
public int hashCode() {
if (hashCode == Integer.MAX_VALUE)
hashCode = SubjectActions.hashCode(subject);
return hashCode;
}
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null || (obj instanceof SubjectKey) == false)
return false;
SubjectKey other = (SubjectKey) obj;
return SubjectActions.equals(subject, other.subject) && separateNoTx == other.separateNoTx;
}
}
/**
* Pool by connection request information
*/
public static class PoolByCri extends BasePool {
public PoolByCri(final ManagedConnectionFactory mcf, final InternalManagedConnectionPool.PoolParams poolParams,
final boolean noTxSeparatePools, final Logger log) {
this(mcf, null, poolParams, noTxSeparatePools, log);
}
public PoolByCri(final ManagedConnectionFactory mcf, final String poolName,
final InternalManagedConnectionPool.PoolParams poolParams, final boolean noTxSeparatePools,
final Logger log) {
super(mcf, poolName, poolParams, noTxSeparatePools, log);
}
protected Object getKey(final Subject subject, final ConnectionRequestInfo cri, boolean separateNoTx) {
return new CriKey(cri, separateNoTx);
}
public void prefill() {
prefill(null, null, false);
}
public void prefill(boolean noTxSeperatePool) {
prefill(null, null, noTxSeperatePool);
}
public void prefill(Subject subject, ConnectionRequestInfo cri) {
prefill(subject, cri, false);
}
public void prefill(Subject subject, ConnectionRequestInfo cri, boolean noTxSeperatePool) {
if (getPreFill()) {
log.warn("Prefill pool option was selected for pool with name " + getPoolName()
+ " that does not support this feature.");
log
.warn("Please verify your *-ds.xml file that corresponds with this resource and either remove the <prefill>true|false</prefill element or explicitly set this value to false.");
}
}
}
/**
* Pool by subject and criteria
*/
private static class CriKey {
/** Identifies no connection request information */
private static final Object NOCRI = new Object();
/** The connection request information */
private final Object cri;
/** Separate no tx */
private boolean separateNoTx;
/** The cached hashCode */
private int hashCode = Integer.MAX_VALUE;
CriKey(ConnectionRequestInfo cri, boolean separateNoTx) {
this.cri = (cri == null) ? NOCRI : cri;
this.separateNoTx = separateNoTx;
}
public int hashCode() {
if (hashCode == Integer.MAX_VALUE)
hashCode = cri.hashCode();
return hashCode;
}
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null || (obj instanceof CriKey) == false)
return false;
CriKey other = (CriKey) obj;
return cri.equals(other.cri) && separateNoTx == other.separateNoTx;
}
}
/**
* One pool
*/
public static class OnePool extends BasePool {
public OnePool(final ManagedConnectionFactory mcf, final InternalManagedConnectionPool.PoolParams poolParams,
final boolean noTxSeparatePools, final Logger log) {
this(mcf, null, poolParams, noTxSeparatePools, log);
}
public OnePool(final ManagedConnectionFactory mcf, final String poolName,
final InternalManagedConnectionPool.PoolParams poolParams, final boolean noTxSeparatePools,
final Logger log) {
super(mcf, poolName, poolParams, noTxSeparatePools, log);
}
protected Object getKey(final Subject subject, final ConnectionRequestInfo cri, boolean separateNoTx) {
if (separateNoTx)
return Boolean.TRUE;
else
return Boolean.FALSE;
}
}
private static class SubjectActions implements PrivilegedAction {
Subject subject;
Subject other;
SubjectActions(Subject subject, Subject other) {
this.subject = subject;
this.other = other;
}
public Object run() {
Object value = null;
if (other == null)
value = new Integer(subject.hashCode());
else
value = new Boolean(subject.equals(other));
return value;
}
static int hashCode(Subject subject) {
SubjectActions action = new SubjectActions(subject, null);
Integer hash = (Integer) AccessController.doPrivileged(action);
return hash.intValue();
}
static boolean equals(Subject subject, Subject other) {
SubjectActions action = new SubjectActions(subject, other);
Boolean equals = (Boolean) AccessController.doPrivileged(action);
return equals.booleanValue();
}
}
}