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/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you
* may not use this file except in compliance with the License. You
* may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied. See the License for the specific language governing
* permissions and limitations under the License. See accompanying
* LICENSE file.
*/
package com.gemstone.gemfire.cache;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.TreeMap;
import com.gemstone.gemfire.InternalGemFireError;
import com.gemstone.gemfire.SystemFailure;
import com.gemstone.gemfire.cache.client.Pool;
import com.gemstone.gemfire.cache.client.PoolManager;
import com.gemstone.gemfire.cache.client.internal.ServerRegionProxy;
import com.gemstone.gemfire.cache.util.BridgeWriter;
import com.gemstone.gemfire.cache.wan.GatewaySender;
import com.gemstone.gemfire.distributed.DistributedMember;
import com.gemstone.gemfire.distributed.internal.InternalDistributedSystem;
import com.gemstone.gemfire.internal.Assert;
import com.gemstone.gemfire.internal.cache.DistributedRegion;
import com.gemstone.gemfire.internal.cache.DynamicRegionAttributes;
import com.gemstone.gemfire.internal.cache.DynamicRegionFactoryImpl;
import com.gemstone.gemfire.internal.cache.EntryEventImpl;
import com.gemstone.gemfire.internal.cache.EnumListenerEvent;
import com.gemstone.gemfire.internal.cache.EvictionAttributesImpl;
import com.gemstone.gemfire.internal.cache.GemFireCacheImpl;
import com.gemstone.gemfire.internal.cache.InitialImageOperation;
import com.gemstone.gemfire.internal.cache.InternalRegionArguments;
import com.gemstone.gemfire.internal.cache.LocalRegion;
import com.gemstone.gemfire.internal.cache.RegionEntry;
import com.gemstone.gemfire.internal.cache.RegionEventImpl;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
import com.gemstone.gemfire.security.GemFireSecurityException;
/**
* DynamicRegionFactory provides a distributed region creation service.
* Any other member of the GemFire DistributedSystem that has created
* an instance of this class will automatically instantiate regions created
* through the factory from anywhere else in the DistributedSystem.
*
* Instructions for Use:
*
* - If your application is a client in a client/server installation,
* either specify the pool name in the
* {@link DynamicRegionFactory.Config} you'll use to create a
* DynamicRegionFactory or specify it
* in a dynamic-region-factory element in your cache.xml.
*
*
- Before you've created a GemFire Cache in your application, add a
* line of code as follows:
* DynamicRegionFactory factory = DynamicRegionFactory.get();
* factory.open(config);
* DynamicRegionFactory myFactoryHandle = DynamicRegionFactory.get().open(config);
* or just use a dynamic-region-factory element in the cache.xml.
*
* - Create the GemFire Cache. During cache creation, the list of dynamic Regions will either be discovered
* by recovering
* their names from disk (see {@link DynamicRegionFactory.Config#persistBackup}) or from other members of the
* distributed system.
* These dynamic Regions will be created before Cache creation completes.
*
*
- Thereafter, when you want to create dynamic distributed Regions,
* create them using the {@link #createDynamicRegion}. Regions created with the factory will
* inherit their RegionAttributes from their parent Region, though you can override
* callbacks when you configure the factory.
*
*
All other instances of GemFire across the distributed system that
* instantiate and open a DynamicRegionFactory will also get the dynamic distributed Regions.
*
*
- Non-dynamic parent Regions should be declared in cache.xml so that they can be created before
* the dynamic Region factory goes active and starts creating Regions. You will have cache creation
* problems if this isn't done.
*
*
- A DynamicRegionListener can be registered before open is called and before cache creation
* so that the listener will be called if dynamic Regions are created during cache creation.
*
*
* Saving the factory on disk:
* If {@link DynamicRegionFactory.Config#persistBackup} is configured for the factory, dynamic Region information
* is written to disk for recovery.
* By default the current directory is used for this information. The {@link DynamicRegionFactory.Config#diskDir}
* can be used to change this default.
*
* Registering interest in cache server information: The {@link DynamicRegionFactory.Config#registerInterest}
* setting determines whether clients will register interest in server keys or not. You will generally want
* this to be turned on so that clients will see updates made to servers. In server processes, DynamicRegionFactory
* forces use of NotifyBySubscription.
*
*
* Notes:
*
* - DynamicRegionFactories in non-client VMs must not be configured with a BridgeWriter.
*
- If {@link #open()} is called before cache creation and the cache.xml has a dynamic-region-factory
* element then the cache.xml will override the open call's configuration.
*
*
- Since the RegionAttributes of a dynamically created Region are copied
* from the parent Region, any callbacks, ({@link CacheListener},
* {@link CacheWriter}, and {@link CacheLoader}
* are shared by the parent and all its dynamic children
* so make sure the callback is thread-safe and that its
* {@link CacheCallback#close} implementation does not stop it from functioning.
* However the products BridgeLoader, BridgeWriter, and all LRUAlgorithm instances will
* be cloned so that each dynamic Region has its own callback.
*
*
- The root Region name "DynamicRegions" is reserved. The factory creates a root Region of
* that name and uses it to keep track of what dynamic Regions exist. Applications should
* not directly access this Region; instead use the methods on this factory.
*
* @since 4.3
* @author Gideon Low
* @author Darrel Schneider
* @author Bruce Schuchardt
*
*/
@SuppressWarnings("deprecation")
public abstract class DynamicRegionFactory {
public static final String dynamicRegionListName = "__DynamicRegions";
private Region dynamicRegionList = null;
/**
* This controls the delay introduced to try and avoid any race conditions
* between propagation of newly created Dynamic Regions
* and the Entries put into them.
*/
private static final long regionCreateSleepMillis = Long.getLong("DynamicRegionFactory.msDelay", 250).longValue();
private static DynamicRegionFactory singleInstance = new DynamicRegionFactoryImpl ( );
GemFireCacheImpl c = null;
Config config = null;
/** The region listeners registered on this DynamicRegionFactory */
private static volatile List regionListeners = Collections.EMPTY_LIST;
private static final Object regionListenerLock = new Object();
/**
* Opens the DynamicRegionFactory with default settings.
*/
public void open() {
open(new Config());
}
/**
* Opens the factory with the given settings.
* This should be sent to the factory before creating a cache. The cache
* will otherwise open a factory with default settings.
* This does not need to be sent if the cache.xml declares the use of dynamic regions.
* @param conf the configuration for this factory.
*/
public void open(Config conf) {
this.config = new Config(conf);
}
/**
* Closes the dynamic region factory, disabling any further creation or
* destruction of dynamic regions in this cache.
*/
protected void _close() {
this.config = null;
this.c = null;
}
/**
* Returns true if dynamic region factory is open; false if closed.
*/
public boolean isOpen() {
return getConfig() != null;
}
/**
* Returns true if this factory is open and can produce dynamic regions.
* Factories are only active after their cache has been created.
*/
public boolean isActive() {
return isOpen() && this.c != null;
}
/**
* Returns true if dynamic region factory is closed.
*/
public boolean isClosed() {
return !isOpen();
}
/**
* Returns the configuration for this factory.
* Returns null if the factory is closed;
*/
public Config getConfig() {
if (this.config == null)
return null;
else
return new Config(this.config);
}
public static boolean regionIsDynamicRegionList(String regionPath) {
return regionPath != null && regionPath.equals('/' + dynamicRegionListName);
}
/**
* The method is for internal use only. It is called implicitly during cache creation.
* @param theCache The GemFire Cache
* @throws CacheException
*/
protected void _internalInit ( GemFireCacheImpl theCache ) throws CacheException
{
if (isClosed()) {
// DynamicRegions are not enabled in this vm. Just return.
return;
}
/**
* This method is called internally during cache initialization at the correct time.
* Initialize the factory with a GemFire Cache. We create the metadata Region which holds all our
* dynamically created regions.
*/
try {
this.c = theCache;
this.dynamicRegionList = theCache.getRegion(dynamicRegionListName);
final boolean isClient = this.config.getBridgeWriter() != null || this.config.getPoolName()!=null;
if (this.dynamicRegionList == null) {
InternalRegionArguments ira = new InternalRegionArguments()
.setDestroyLockFlag(true)
.setSnapshotInputStream(null)
.setImageTarget(null);
AttributesFactory af = new AttributesFactory ();
if (this.config.getPersistBackup()) {
af.setDataPolicy(DataPolicy.PERSISTENT_REPLICATE);
af.setDiskWriteAttributes(new DiskWriteAttributesFactory().create());
if (this.config.getDiskDir() != null) {
af.setDiskDirs(new File[]{this.config.getDiskDir()});
}
}
if (isClient) {
// BRIDGE CLIENT
af.setScope(Scope.LOCAL);
af.setDataPolicy(DataPolicy.NORMAL); //MirrorType(MirrorType.NONE);
af.setStatisticsEnabled(true);
String cpName = this.config.getPoolName();
if (cpName != null) {
Pool cp = PoolManager.find(cpName);
if(cp==null) {
throw new IllegalStateException("Invalid pool name specified. This pool is not registered with the cache: " + cpName);
} else {
if (!cp.getSubscriptionEnabled()) {
throw new IllegalStateException("The client pool of a DynamicRegionFactory must be configured with queue-enabled set to true.");
}
af.setPoolName(cpName);
}
} else {
BridgeWriter bw = this.config.getBridgeWriter();
if (!bw.hasEstablishCallbackConnection()) {
throw new IllegalStateException(LocalizedStrings.DynamicRegionFactory_THE_CLIENT_POOL_OF_A_DYNAMICREGIONFACTORY_MUST_BE_CONFIGURED_WITH_ESTABLISHCALLBACKCONNECTION_SET_TO_TRUE.toLocalizedString());
}
af.setCacheWriter(bw);
}
ira.setInternalMetaRegion(new LocalMetaRegion(af.create(), ira));
} else {
af.setScope(Scope.DISTRIBUTED_ACK);
if (!this.config.getPersistBackup()) { // if persistBackup, the data policy has already been set
af.setDataPolicy(DataPolicy.REPLICATE); //setMirrorType(MirrorType.KEYS_VALUES);
}
af.setEnableGateway(true);
for (GatewaySender gs : c.getGatewaySenders()) {
if (!gs.isParallel())
af.addGatewaySenderId(gs.getId());
}
ira.setInternalMetaRegion(new DistributedMetaRegion(af.create())); // bug fix 35432
}
try {
dynamicRegionList = theCache.createVMRegion(dynamicRegionListName, af.create(), ira);
}
catch (IOException e) {
// only if loading snapshot, not here
InternalGemFireError assErr = new InternalGemFireError(LocalizedStrings.DynamicRegionFactory_UNEXPECTED_EXCEPTION.toLocalizedString());
assErr.initCause(e);
throw assErr;
}
catch (ClassNotFoundException e) {
// only if loading snapshot, not here
InternalGemFireError assErr = new InternalGemFireError(LocalizedStrings.DynamicRegionFactory_UNEXPECTED_EXCEPTION.toLocalizedString());
assErr.initCause(e);
throw assErr;
}
if (isClient) {
dynamicRegionList.registerInterest("ALL_KEYS");
}
if (theCache.getLoggerI18n().fineEnabled()) {
theCache.getLoggerI18n().fine("Created dynamic region: " + dynamicRegionList);
}
} else {
if (theCache.getLoggerI18n().fineEnabled()) {
theCache.getLoggerI18n().fine("Retrieved dynamic region: " + dynamicRegionList);
}
}
createDefinedDynamicRegions ( );
} catch ( CacheException e ) {
//
theCache.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_ERROR_INITIALIZING_DYNAMICREGIONFACTORY, e);
throw e;
}
}
/**
* This creates Dynamic Regions that already exist in other publishing processes
*
*/
private void createDefinedDynamicRegions ( ) throws CacheException {
// TODO: perhaps add some logic here to avoid the possiblity of synchronization issues . . . .
Set s = dynamicRegionList.entrySet( false );
Iterator i = s.iterator();
TreeMap sorted = new TreeMap();
// sort by region name before creating (bug 35528)
while ( i.hasNext() ) {
Region.Entry e = (Region.Entry)i.next();
DynamicRegionAttributes dda = (DynamicRegionAttributes)e.getValue();
sorted.put(dda.rootRegionName + "/" + dda.name, dda);
}
i = sorted.values().iterator();
while ( i.hasNext() ) {
DynamicRegionAttributes dda = (DynamicRegionAttributes)i.next();
doBeforeRegionCreated ( dda.rootRegionName, dda.name, null );
Region region = createDynamicRegionImpl ( dda.rootRegionName, dda.name, false );
doAfterRegionCreated ( region, false, false, null );
}
}
/**
* Returns the DynamicRegionFactory singleton instance.
* @return the DynamicRegionFactory singleton instance
*/
public static DynamicRegionFactory get() {
return singleInstance;
}
/**
* Registers a DynamicRegionListener for callbacks.
* @param listener The DynamicRegionListener to be registered
*/
public void registerDynamicRegionListener(DynamicRegionListener listener) {
synchronized (regionListenerLock) {
List oldListeners = regionListeners;
if (!oldListeners.contains(listener)) {
List newListeners = new ArrayList(oldListeners);
newListeners.add(listener);
regionListeners = newListeners;
}
}
}
/**
* Unregisters a DynamicRegionListener for callbacks.
* @param listener The DynamicRegionListener to be unregistered
*/
public void unregisterDynamicRegionListener(DynamicRegionListener listener) {
synchronized (regionListenerLock) {
List oldListeners = regionListeners;
if (oldListeners.contains(listener)) {
List newListeners = new ArrayList(oldListeners);
if (newListeners.remove(listener)) {
regionListeners = newListeners;
}
}
}
}
private void doBeforeRegionCreated( String parentRegion, String regionName, DistributedMember mbr ) {
for ( Iterator i = regionListeners.iterator(); i.hasNext(); ) {
DynamicRegionListener listener = ( DynamicRegionListener ) i.next();
try {
listener.beforeRegionCreate( parentRegion, regionName );
}
catch (Throwable t) {
Error err;
if (t instanceof Error && SystemFailure.isJVMFailureError(
err = (Error)t)) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
}
// Whenever you catch Error or Throwable, you must also
// check for fatal JVM error (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
this.c.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_DYNAMICREGIONLISTENER__0__THREW_EXCEPTION_ON_BEFOREREGIONCREATED, listener, t);
}
}
}
private void doAfterRegionCreated( Region region, boolean distributed, boolean isOriginRemote, DistributedMember mbr ) {
RegionEvent event = new RegionEventImpl(region, Operation.REGION_CREATE, null, isOriginRemote, getMember(mbr));
for ( Iterator i = regionListeners.iterator(); i.hasNext(); ) {
DynamicRegionListener listener = ( DynamicRegionListener ) i.next();
try {
listener.afterRegionCreate( event /*region*/ );
}
catch (Throwable t) {
Error err;
if (t instanceof Error && SystemFailure.isJVMFailureError(
err = (Error)t)) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
}
// Whenever you catch Error or Throwable, you must also
// check for fatal JVM error (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
this.c.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_DYNAMICREGIONLISTENER__0__THREW_EXCEPTION_ON_AFTERREGIONCREATED, listener, t);
}
}
}
private void doBeforeRegionDestroyed( Region region, boolean distributed, boolean isOriginRemote, boolean expiration, DistributedMember mbr ) {
final Operation op;
if (!distributed && !isOriginRemote) {
op = expiration? Operation.REGION_EXPIRE_LOCAL_DESTROY : Operation.REGION_LOCAL_DESTROY;
}
else {
op = expiration? Operation.REGION_EXPIRE_DESTROY : Operation.REGION_DESTROY;
}
RegionEvent event = new RegionEventImpl(region, op, null, isOriginRemote, getMember(mbr));
for ( Iterator i = regionListeners.iterator(); i.hasNext(); ) {
DynamicRegionListener listener = ( DynamicRegionListener ) i.next();
try {
listener.beforeRegionDestroy( event /*fullRegionName*/ );
} catch (Throwable t) {
Error err;
if (t instanceof Error && SystemFailure.isJVMFailureError(
err = (Error)t)) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
}
// Whenever you catch Error or Throwable, you must also
// check for fatal JVM error (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
this.c.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_DYNAMICREGIONLISTENER__0__THREW_EXCEPTION_ON_BEFOREREGIONDESTROYED, listener, t);
}
}
}
private void doAfterRegionDestroyed( Region region, boolean distributed, boolean isOriginRemote, boolean expiration, DistributedMember mbr ) {
final Operation op;
if (!distributed && !isOriginRemote) {
op = expiration? Operation.REGION_EXPIRE_LOCAL_DESTROY : Operation.REGION_LOCAL_DESTROY;
}
else {
op = expiration? Operation.REGION_EXPIRE_DESTROY : Operation.REGION_DESTROY;
}
RegionEvent event = new RegionEventImpl(region, op, null, isOriginRemote, getMember(mbr));
for ( Iterator i = regionListeners.iterator(); i.hasNext(); ) {
DynamicRegionListener listener = ( DynamicRegionListener ) i.next();
try {
listener.afterRegionDestroy( event /*fullRegionName*/ );
}
catch (Throwable t) {
Error err;
if (t instanceof Error && SystemFailure.isJVMFailureError(
err = (Error)t)) {
SystemFailure.initiateFailure(err);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw err;
}
// Whenever you catch Error or Throwable, you must also
// check for fatal JVM error (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
this.c.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_DYNAMICREGIONLISTENER__0__THREW_EXCEPTION_ON_AFTERREGIONDESTROYED, listener, t);
}
}
}
/** return the argument, or if null the DistributedMember id of this vm */
private DistributedMember getMember(DistributedMember mbr) {
if (mbr == null) {
return InternalDistributedSystem.getAnyInstance().getDistributedMember();
}
else {
return null;
}
}
/**
* Creates the dynamic Region in the local cache and distributes the
* creation to other caches.
*
* @param parentRegionName the new region is created as a subregion of the region having this path
* @param regionName the name of the new subregion
* @return the Region created
* @throws CacheException
*/
public Region createDynamicRegion ( String parentRegionName, String regionName ) throws CacheException {
if (isClosed()) {
throw new IllegalStateException("Dynamic region factory is closed");
}
doBeforeRegionCreated ( parentRegionName, regionName, null );
Region region = createDynamicRegionImpl ( parentRegionName, regionName, true );
doAfterRegionCreated ( region, false, false, null );
return region;
}
/**
* Destroys the dynamic Region in the local cache and distributes the
* destruction to other caches.
* @param fullRegionName The full path of the Region to be
* dynamically destroyed
* @throws CacheException
* @throws RegionDestroyedException if the dynamic region was never created
* or has already been destroyed
*/
public void destroyDynamicRegion ( String fullRegionName ) throws CacheException {
if (!dynamicRegionList.containsKey(fullRegionName)) {
throw new RegionDestroyedException(LocalizedStrings.DynamicRegionFactory_DYNAMIC_REGION_0_HAS_NOT_BEEN_CREATED.toLocalizedString(fullRegionName), fullRegionName);
}
if (isClosed()) {
throw new IllegalStateException("Dynamic region factory is closed");
}
// Retrieve the region to destroy
Region region = c.getRegion( fullRegionName );
if (region != null) {
DistributedMember mbr = getMember(null);
doBeforeRegionDestroyed ( region, false, false, false, mbr );
// Locally destroy the region. Let the dynamicRegionList handle distributing
// the destroy.
region.localDestroyRegion();
destroyDynamicRegionImpl(fullRegionName);
doAfterRegionDestroyed ( region, false, false, false, mbr );
} else {
// make sure meta region is cleaned up locally and remotely
destroyDynamicRegionImpl(fullRegionName);
}
}
private Region createDynamicRegionImpl ( String parentRegionName, String newRegionName, boolean addEntry )
throws CacheException {
Region parentRegion = c.getRegion ( parentRegionName );
Region newRegion = null;
if ( parentRegion == null ) {
String errMsg = LocalizedStrings.DynamicRegionFactory_ERROR__COULD_NOT_FIND_A_REGION_NAMED___0_.toLocalizedString(parentRegionName);
RegionDestroyedException e = new RegionDestroyedException(errMsg, parentRegionName);
c.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_ERROR__COULD_NOT_FIND_A_REGION_NAMED___0_, parentRegionName, e);
throw e;
}
// Create RegionAttributes by inheriting from the parent
RegionAttributes rra = parentRegion.getAttributes();
RegionAttributes newRegionAttributes = null;
AttributesFactory af = new AttributesFactory( rra );
{
EvictionAttributes ev = rra.getEvictionAttributes();
if (ev != null && ev.getAlgorithm().isLRU()) {
EvictionAttributes rev = new EvictionAttributesImpl( (EvictionAttributesImpl)ev );
af.setEvictionAttributes( rev );
}
}
// for internal testing, until partitioned regions support subclasses or
// DynamicRegion implementation is redone to not inherit attrs from parent
// regions [bruce]
if (newRegionName.endsWith("_PRTEST_")) {
af.setPartitionAttributes((new PartitionAttributesFactory()).create());
}
newRegionAttributes = af.create();
try {
newRegion = parentRegion.createSubregion( newRegionName, newRegionAttributes );
c.getLoggerI18n().fine("Created dynamic region " + newRegion);
} catch (RegionExistsException ex) {
// a race condition exists that can cause this so just fine log it
c.getLoggerI18n().fine("DynamicRegion " + newRegionName + " in parent " + parentRegionName + " already existed");
newRegion = ex.getRegion();
// } catch ( CacheException e ) {
// c.getLoggerI18n().warning ( "Error creating new Dynamic Region '" + newRegionName, e );
// throw e;
}
if (addEntry) {
DynamicRegionAttributes dra = new DynamicRegionAttributes ( );
dra.name = newRegionName;
dra.rootRegionName = parentRegion.getFullPath();
if (c.getLoggerI18n().fineEnabled()) {
c.getLoggerI18n().fine ("Putting entry into dynamic region list at key: " + newRegion.getFullPath());
}
dynamicRegionList.put ( newRegion.getFullPath(), dra );
}
if (config.getRegisterInterest()) {
ServerRegionProxy proxy = ((LocalRegion)newRegion).getServerProxy();
if (proxy != null) {
if (((Pool)proxy.getPool()).getSubscriptionEnabled()) {
try {
newRegion.registerInterest("ALL_KEYS");
}
catch (GemFireSecurityException ex) {
// Ignore security exceptions here
c.getSecurityLoggerI18n().warning(
LocalizedStrings.DynamicRegionFactory_EXCEPTION_WHEN_REGISTERING_INTEREST_FOR_ALL_KEYS_IN_DYNAMIC_REGION_0_1,
new Object[] {newRegion.getFullPath(), ex});
}
}
}
}
if (regionCreateSleepMillis > 0) {
try {
Thread.sleep( regionCreateSleepMillis );
} catch ( InterruptedException e ) {
Thread.currentThread().interrupt();
}
}
if (c.getLoggerI18n().fineEnabled()) {
c.getLoggerI18n().fine ( "Created Dynamic Region " + newRegion.getFullPath() );
}
return newRegion;
}
private void destroyDynamicRegionImpl(String fullRegionName)
throws CacheException {
// Destroy the entry in the dynamicRegionList
try {
if (c.getLoggerI18n().fineEnabled()) {
c.getLoggerI18n().fine ("Destroying entry from dynamic region list at key: " + fullRegionName);
}
dynamicRegionList.destroy ( fullRegionName );
} catch (CacheException e) {
c.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_ERROR_DESTROYING_DYNAMIC_REGION__0, fullRegionName, e);
throw e;
}
if (c.getLoggerI18n().fineEnabled()) {
c.getLoggerI18n().fine ( "Destroyed Dynamic Region " + fullRegionName );
}
}
/**
* Configuration for dynamic region factory.
* The default attributes are:
*
* - diskDir:
null
* - bridgeWriter:
null
* - persistBackup:
true
* - registerInterest:
true
*
* @since 4.3
*/
public static class Config {
private static final boolean DISABLE_REGISTER_INTEREST = Boolean.getBoolean("DynamicRegionFactory.disableRegisterInterest");
private static final boolean DISABLE_PERSIST_BACKUP = Boolean.getBoolean("DynamicRegionFactory.disablePersistence");
/** Causes the factory to be persisted on disk. See {@link #diskDir} */
public final boolean persistBackup;
/** The directory where the factory's {@link #persistBackup} files are placed */
public final File diskDir;
/** Causes regions created by the factory to register interest in all keys in a corresponding server cache region */
public final boolean registerInterest;
/** The {@link BridgeWriter} to be used by the factory to communicate with
* the factory in its server.
* Client factories must configure a BridgeWriter for their factory
* and it must be configured to establish a callback connection.
*/
public final BridgeWriter bridgeWriter;
/**
* The ${link Pool} to be used by the factory to communicate with
* the server-side factory. Client factories may use this instead of a BridgeWriter
*/
public final String poolName;
/**
* Creates a configuration with the default attributes.
*/
public Config() {
this(null, null, !DISABLE_PERSIST_BACKUP);
}
/**
* Creates a configuration with the given attributes and defaults for other attributes.
* @deprecated use a pool name instead of a bridge writer
*/
@Deprecated
public Config(File diskDir, BridgeWriter bridgeWriter) {
this(diskDir, bridgeWriter, !DISABLE_PERSIST_BACKUP);
}
/**
* Creates a configuration with the given attributes and defaults for other attributes.
* @deprecated use a pool name instead of a bridge writer
*/
@Deprecated
public Config(File diskDir, BridgeWriter bridgeWriter, boolean persistBackup) {
this(diskDir, bridgeWriter, persistBackup, !DISABLE_REGISTER_INTEREST);
}
/**
* Creates a configuration with the given attributes
* @deprecated use a pool name instead of a bridge writer
*/
@Deprecated
public Config(
File diskDir,
BridgeWriter bridgeWriter,
boolean persistBackup,
boolean registerInterest)
{
this.registerInterest = registerInterest;
this.persistBackup = persistBackup;
this.diskDir = diskDir;
this.bridgeWriter = bridgeWriter;
this.poolName = null;
}
/**
* Creates a configuration with the given attributes
*/
public Config(
File diskDir,
String poolName,
boolean persistBackup,
boolean registerInterest)
{
this.registerInterest = registerInterest;
this.persistBackup = persistBackup;
this.diskDir = diskDir;
this.poolName = poolName;
this.bridgeWriter = null;
}
/**
* Returns true if the factory is persisted to disk; false if not.
*/
public boolean getPersistBackup() {
return this.persistBackup;
}
/**
* Returns true if the region will register interest in all keys of a corresponding
* server cache region
*/
public boolean getRegisterInterest() {
return this.registerInterest;
}
/**
* Returns the disk directory that the dynamic region factory data
* will be written to.
* Returns null if no directory has been specified.
* The diskDir is only used if persistBackup is true.
*/
public File getDiskDir() {
return this.diskDir;
}
/**
* Returns the {@link BridgeWriter} associated with the dynamic region factory.
* Returns null if there is no cache writer for dynamic regions.
* A cache writer will only exist if this is a client and the cache writer connects to a server.
*/
public BridgeWriter getBridgeWriter() {
return this.bridgeWriter;
}
/**
* Returns the name of the {@link Pool} associated with the dynamic region factory.
* Returns null if there is no connection pool for dynamic regions.
*/
public String getPoolName() {
return this.poolName;
}
/** create a new Config with settings from another one */
Config(Config conf) {
this.diskDir = conf.diskDir;
this.persistBackup = conf.persistBackup;
this.bridgeWriter = conf.bridgeWriter;
this.registerInterest = conf.registerInterest;
this.poolName = conf.poolName;
}
}
protected void buildDynamicRegion(EntryEvent event) {
if (!DynamicRegionFactory.this.isOpen())
return;
// Ignore the callback if it originated in this process (because the region
// will already have been created) and the event is not a bridge event
if ( !event.isOriginRemote() && !event.isBridgeEvent() ) return;
//
DynamicRegionAttributes dra = (DynamicRegionAttributes)event.getNewValue();
String parentRegionName = dra.rootRegionName;
String newRegionName = dra.name;
try {
doBeforeRegionCreated ( parentRegionName, newRegionName, event.getDistributedMember() );
Region region = createDynamicRegionImpl ( parentRegionName, newRegionName, false);
doAfterRegionCreated ( region, true, true, event.getDistributedMember() );
} catch ( Exception e ) {
c.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_ERROR_ATTEMPTING_TO_LOCALLY_CREATE_DYNAMIC_REGION__0, newRegionName, e);
}
}
protected void razeDynamicRegion(EntryEvent event) {
if (!DynamicRegionFactory.this.isOpen())
return;
// Because CacheClientUpdater calls localDestroy we need to allow
// "local" events. If this is a true local then c.getRegion will return
// null and this code will do nothing.
// When bug 35644 fixed the following "if" can be uncommented.
// // Ignore the callback if it originated in this process (because the region
// // will already have been destroyed)
// if ( !event.isOriginRemote() && !(event instanceof BridgeEntryEventImpl)) return;
String fullRegionName = ( String ) event.getKey();
Region drRegion = c.getRegion( fullRegionName );
if (drRegion != null) {
try {
doBeforeRegionDestroyed ( drRegion, true, event.getOperation().isDistributed(), event.getOperation().isExpiration(), event.getDistributedMember() );
drRegion.localDestroyRegion();
doAfterRegionDestroyed ( drRegion, true, event.getOperation().isDistributed(), event.getOperation().isExpiration(), event.getDistributedMember() );
} catch ( Exception e ) {
c.getLoggerI18n().warning(LocalizedStrings.DynamicRegionFactory_ERROR_ATTEMPTING_TO_LOCALLY_DESTROY_DYNAMIC_REGION__0, fullRegionName, e);
}
}
}
// private class DRListener implements CacheListener {
// public void afterCreate(EntryEvent arg0) {
// buildDynamicRegion(arg0);
// }
//
// public void afterDestroy(EntryEvent arg0) {
// razeDynamicRegion(arg0);
// }
//
// public void afterInvalidate(EntryEvent arg0) {
// // Stub, nothing to do.
// }
//
// public void afterRegionDestroy(RegionEvent arg0) {
// // Stub, nothing to do.
// }
//
// public void afterRegionInvalidate(RegionEvent arg0) {
// // Stub, nothing to do.
// }
//
// public void afterUpdate(EntryEvent arg0) {
// // Stub, nothing to do.
// }
//
// public void close() {
// // Stub, nothing to do.
// }
// }
// Introduced to keep symmetry with DistributedMetaRegion and potentially provide improved control of
// the meta data
private class LocalMetaRegion extends LocalRegion {
protected LocalMetaRegion(RegionAttributes attrs, InternalRegionArguments ira) {
super(dynamicRegionListName, attrs, null, DynamicRegionFactory.this.c, ira);
Assert.assertTrue(attrs.getScope().isLocal());
}
// This is an internal uses only region
@Override
public boolean isSecret()
{
return true;
}
@Override
protected boolean isCopyOnRead() {
return false;
}
// //@override event tracker not needed for this type of region
// void initEventTracker() {
// }
// while internal, its contents should be communicated with bridge clients
@Override
protected boolean shouldNotifyBridgeClients()
{
return getCache().getBridgeServers().size() > 0;
}
// Over-ride the super behavior to perform the destruction of the dynamic region
@Override
public void invokeDestroyCallbacks(EnumListenerEvent eventType, EntryEventImpl event, boolean callDispatchEventsCallback, boolean notifyGateways )
{
Assert.assertTrue(eventType.equals(EnumListenerEvent.AFTER_DESTROY));
// Notify bridge clients (if this is a BridgeServer)
event.setEventType(eventType);
notifyBridgeClients(event);
// Notify GatewayHub (if this region participates in a Gateway)
if (notifyGateways) {
notifyGatewayHubs(eventType, event);
}
// Destroy the dynamic region after the clients and gateways have been notified
razeDynamicRegion(event);
}
// Over-ride the super behavior to perform the creation of the dynamic region
@Override
protected long basicPutPart2(EntryEventImpl event, RegionEntry entry,
boolean isInitialized, long lastModified,
boolean clearConflict) {
boolean isCreate = event.getOperation().isCreate();
boolean set = false;
if (isCreate && !event.callbacksInvoked()) {
// don't notify clients until all peers have created the region so that
// their register-interest operations will be sure to find data
event.callbacksInvoked(true);
set = true;
}
long result = super.basicPutPart2(event, entry, isInitialized, lastModified, clearConflict);
if (set) {
event.callbacksInvoked(false);
}
if (isCreate) {
buildDynamicRegion(event);
}
return result;
}
// The dynamic-region meta-region needs to tell clients about the event
// after all servers have created the region so that register-interest
// will work correctly
@Override
public void basicPutPart3(EntryEventImpl event, RegionEntry entry,
boolean isInitialized, long lastModified, boolean invokeCallbacks,
boolean ifNew, boolean ifOld, Object expectedOldValue,
boolean requireOldValue) {
super.basicPutPart3(event, entry, isInitialized, lastModified, invokeCallbacks, ifNew, ifOld, expectedOldValue, requireOldValue);
// this code is copied from LocalRegion.basicPutPart2
invokeCallbacks &= !entry.isTombstone(); // put() is creating a tombstone
if (invokeCallbacks) {
boolean doCallback = false;
if (isInitialized) {
if (event.isGenerateCallbacks()) {
doCallback = true;
}
}
if (doCallback) {
notifyGatewayHubs(event.getOperation().isUpdate()? EnumListenerEvent.AFTER_UPDATE
: EnumListenerEvent.AFTER_CREATE, event);
// Notify listeners
if (event.getPutAllOperation() == null) {
try {
entry.dispatchListenerEvents(event);
}
catch (InterruptedException ie) {
Thread.currentThread().interrupt();
stopper.checkCancelInProgress(null);
}
}
}
}
}
}
// Part of the fix for bug 35432, which required a change to the
// distribution and notification order on the BridgeServer
private class DistributedMetaRegion extends DistributedRegion {
protected DistributedMetaRegion(RegionAttributes attrs) {
super(dynamicRegionListName, attrs, null, DynamicRegionFactory.this.c, new InternalRegionArguments());
}
// This is an internal uses only region
@Override
public boolean isSecret()
{
return true;
}
// //@override event tracker not needed for this type of region
// void initEventTracker() {
// }
@Override
protected boolean isCopyOnRead() {
return false;
}
// while internal, its contents should be communicated with bridge clients
@Override
final public boolean shouldNotifyBridgeClients()
{
return getCache().getBridgeServers().size() > 0;
}
// Over-ride the super behavior to perform the destruction of the dynamic region
//
@Override
public void invokeDestroyCallbacks(EnumListenerEvent eventType, EntryEventImpl event, boolean callDispatchEventsCallback, boolean notifyGateways)
{
Assert.assertTrue(eventType.equals(EnumListenerEvent.AFTER_DESTROY));
// Notify bridge clients (if this is a BridgeServer)
event.setEventType(eventType);
notifyBridgeClients(event);
// Notify GatewayHub (if this region participates in a Gateway)
if (notifyGateways) {
notifyGatewayHubs(eventType, event);
}
// Destroy the dynamic region after the clients and gateways have been notified
razeDynamicRegion(event);
}
@Override
protected long basicPutPart2(EntryEventImpl event, RegionEntry entry,
boolean isInitialized, long lastModified,
boolean clearConflict)
{
boolean isCreate = event.getOperation().isCreate();
boolean set = false;
if (isCreate && !event.callbacksInvoked()) {
// don't notify clients until all peers have created the region so that
// their register-interest operations will be sure to find data
event.callbacksInvoked(true);
set = true;
}
long result = super.basicPutPart2(event, entry, isInitialized, lastModified, clearConflict);
if (set) {
event.callbacksInvoked(false);
}
if (isCreate) {
try {
InitialImageOperation.setInhibitStateFlush(true); // fix for bug 36175
buildDynamicRegion(event);
}
finally {
InitialImageOperation.setInhibitStateFlush(false);
}
}
return result;
}
// The dynamic-region meta-region needs to tell clients about the event
// after all servers have created the region so that register-interest
// will work correctly
@Override
public void basicPutPart3(EntryEventImpl event, RegionEntry entry,
boolean isInitialized, long lastModified, boolean invokeCallbacks,
boolean ifNew, boolean ifOld, Object expectedOldValue,
boolean requireOldValue) {
super.basicPutPart3(event, entry, isInitialized, lastModified, invokeCallbacks, ifNew, ifOld, expectedOldValue, requireOldValue);
// this code is copied from LocalRegion.basicPutPart2
invokeCallbacks &= !entry.isTombstone(); // put() is creating a tombstone
if (invokeCallbacks) {
boolean doCallback = false;
if (isInitialized) {
if (event.isGenerateCallbacks()) {
doCallback = true;
}
}
if (doCallback) {
notifyGatewayHubs(event.getOperation().isUpdate()? EnumListenerEvent.AFTER_UPDATE
: EnumListenerEvent.AFTER_CREATE, event);
// Notify listeners
if (event.getPutAllOperation() == null) {
try {
entry.dispatchListenerEvents(event);
}
catch (InterruptedException ie) {
Thread.currentThread().interrupt();
stopper.checkCancelInProgress(null);
}
}
}
}
}
}
}