| /*========================================================================= |
| * Copyright (c) 2010-2014 Pivotal Software, Inc. All Rights Reserved. |
| * This product is protected by U.S. and international copyright |
| * and intellectual property laws. Pivotal products are covered by |
| * one or more patents listed at http://www.pivotal.io/patents. |
| *========================================================================= |
| */ |
| package com.gemstone.gemfire.internal.cache; |
| |
| import com.gemstone.gemfire.CancelCriterion; |
| import com.gemstone.gemfire.InternalGemFireError; |
| import com.gemstone.gemfire.cache.DiskAccessException; |
| import com.gemstone.gemfire.internal.cache.lru.LRUStatistics; |
| import com.gemstone.gemfire.internal.cache.persistence.DiskRecoveryStore; |
| import com.gemstone.gemfire.internal.cache.persistence.DiskRegionView; |
| import com.gemstone.gemfire.internal.cache.persistence.DiskStoreID; |
| import com.gemstone.gemfire.internal.i18n.LocalizedStrings; |
| |
| /** |
| * Used to represent a recovered disk region. Once the region actually exists |
| * this instance will be thrown away and a real DiskRegion instance will replace it. |
| * This class needs to keep track of any information that can be recovered |
| * from the DiskInitFile. |
| * |
| * @author Darrel Schneider |
| * |
| * @since prPersistSprint2 |
| */ |
| public class PlaceHolderDiskRegion extends AbstractDiskRegion |
| implements DiskRecoveryStore { |
| private final String name; |
| |
| /** |
| * This constructor is used when creating a region found during recovery |
| * of the DiskInitFile. |
| */ |
| PlaceHolderDiskRegion(DiskStoreImpl ds, long id, String name) { |
| super(ds, id); |
| this.name = name; |
| // do the remaining init in setConfig |
| } |
| |
| /** |
| * This constructor is used when we are closing an existing region. |
| * We want to remember that it is still present in the disk store. |
| */ |
| PlaceHolderDiskRegion(DiskRegionView drv) { |
| super(drv); |
| this.name = drv.getName(); |
| } |
| |
| LRUStatistics prlruStats; |
| |
| public LRUStatistics getPRLRUStats() { |
| return this.prlruStats; |
| } |
| |
| @Override |
| public final String getName() { |
| return this.name; |
| } |
| |
| @Override |
| public String getPrName() { |
| assert isBucket(); |
| String bn = PartitionedRegionHelper.getBucketName(this.name); |
| return PartitionedRegionHelper.getPRPath(bn); |
| } |
| |
| @Override |
| void beginDestroyRegion(LocalRegion region) { |
| // nothing needed |
| } |
| public void finishPendingDestroy() { |
| // nothing needed |
| } |
| @Override |
| public String toString() { |
| StringBuffer sb = new StringBuffer(); |
| sb.append("name=").append(this.name) |
| .append(" id=").append(getId()) |
| // .append(" ").append(super.toString()) |
| ; |
| return sb.toString(); |
| } |
| |
| // DiskRecoveryStore methods |
| public DiskRegionView getDiskRegionView() { |
| return this; |
| } |
| |
| public DiskEntry getDiskEntry(Object key) { |
| RegionEntry re = getRecoveredEntryMap().getEntry(key); |
| if (re != null && re.isRemoved() && !re.isTombstone()) { |
| re = null; |
| } |
| return (DiskEntry)re; |
| } |
| public DiskEntry initializeRecoveredEntry(Object key, DiskEntry.RecoveredEntry value) { |
| RegionEntry re = getRecoveredEntryMap().initRecoveredEntry(key, value); |
| if (re == null) { |
| throw new InternalGemFireError(LocalizedStrings.LocalRegion_ENTRY_ALREADY_EXISTED_0.toLocalizedString(key)); |
| } |
| return (DiskEntry)re; |
| } |
| public DiskEntry updateRecoveredEntry(Object key, DiskEntry.RecoveredEntry value) { |
| return (DiskEntry)getRecoveredEntryMap().updateRecoveredEntry(key, value); |
| } |
| public void destroyRecoveredEntry(Object key) { |
| throw new IllegalStateException("destroyRecoveredEntry should not be called during recovery"); |
| } |
| public void copyRecoveredEntries(RegionMap rm) { |
| throw new IllegalStateException("copyRecoveredEntries should not be called during recovery"); |
| } |
| public void foreachRegionEntry(LocalRegion.RegionEntryCallback callback) { |
| throw new IllegalStateException("foreachRegionEntry should not be called during recovery"); |
| } |
| public boolean lruLimitExceeded() { |
| return getRecoveredEntryMap().lruLimitExceeded(); |
| } |
| |
| public DiskStoreID getDiskStoreID() { |
| return getDiskStore().getDiskStoreID(); |
| } |
| |
| public void acquireReadLock() { |
| //not needed. The only thread |
| //using this method is the async recovery thread. |
| //If this placeholder is replaced with a real region, |
| //this is done under a different lock |
| |
| } |
| |
| public void releaseReadLock() { |
| //not needed |
| } |
| |
| public void updateSizeOnFaultIn(Object key, int newSize, int bytesOnDisk) { |
| //only used by bucket regions |
| } |
| @Override |
| public int calculateValueSize(Object val) { |
| return 0; |
| } |
| @Override |
| public int calculateRegionEntryValueSize(RegionEntry re) { |
| return 0; |
| } |
| |
| public RegionMap getRegionMap() { |
| return getRecoveredEntryMap(); |
| } |
| |
| @Override |
| public void close() { |
| RegionMap rm = getRecoveredEntryMap(); |
| if (rm != null) { |
| rm.close(); |
| } |
| } |
| |
| public void handleDiskAccessException(DiskAccessException dae) { |
| getDiskStore() |
| .getCache() |
| .getLoggerI18n() |
| .error( |
| LocalizedStrings.PlaceHolderDiskRegion_A_DISKACCESSEXCEPTION_HAS_OCCURED_WHILE_RECOVERING_FROM_DISK, |
| getName(), dae); |
| |
| } |
| |
| public boolean didClearCountChange() { |
| return false; |
| } |
| |
| public CancelCriterion getCancelCriterion() { |
| return getDiskStore().getCancelCriterion(); |
| } |
| |
| public boolean isSync() { |
| return true; |
| } |
| |
| public void endRead(long start, long end, long bytesRead) { |
| //do nothing |
| } |
| |
| public boolean isRegionClosed() { |
| return false; |
| } |
| |
| public void initializeStats(long numEntriesInVM, long numOverflowOnDisk, |
| long numOverflowBytesOnDisk) { |
| this.numEntriesInVM.set(numEntriesInVM); |
| this.numOverflowOnDisk.set(numOverflowOnDisk); |
| this.numOverflowBytesOnDisk.set(numOverflowBytesOnDisk); |
| } |
| } |