| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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. |
| */ |
| package org.apache.geode.internal.cache; |
| |
| import org.apache.geode.CancelCriterion; |
| import org.apache.geode.InternalGemFireError; |
| import org.apache.geode.cache.DiskAccessException; |
| import org.apache.geode.internal.cache.entries.DiskEntry; |
| import org.apache.geode.internal.cache.eviction.EvictionController; |
| import org.apache.geode.internal.cache.persistence.DiskRecoveryStore; |
| import org.apache.geode.internal.cache.persistence.DiskRegionView; |
| import org.apache.geode.internal.cache.persistence.DiskStoreID; |
| |
| /** |
| * 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. |
| * |
| * @since GemFire prPersistSprint2 |
| */ |
| public class PlaceHolderDiskRegion extends AbstractDiskRegion |
| implements DiskRecoveryStore, RegionMapOwner { |
| |
| 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(); |
| } |
| |
| @Override |
| public 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 |
| } |
| |
| @Override |
| 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 |
| @Override |
| public DiskRegionView getDiskRegionView() { |
| return this; |
| } |
| |
| @Override |
| public DiskEntry getDiskEntry(Object key) { |
| RegionEntry re = getRecoveredEntryMap().getEntry(key); |
| if (re != null && re.isRemoved() && !re.isTombstone()) { |
| re = null; |
| } |
| return (DiskEntry) re; |
| } |
| |
| @Override |
| public DiskEntry initializeRecoveredEntry(Object key, DiskEntry.RecoveredEntry value) { |
| RegionEntry re = getRecoveredEntryMap().initRecoveredEntry(key, value); |
| if (re == null) { |
| throw new InternalGemFireError( |
| String.format("Entry already existed: %s", key)); |
| } |
| return (DiskEntry) re; |
| } |
| |
| @Override |
| public DiskEntry updateRecoveredEntry(Object key, DiskEntry.RecoveredEntry value) { |
| return (DiskEntry) getRecoveredEntryMap().updateRecoveredEntry(key, value); |
| } |
| |
| @Override |
| public void destroyRecoveredEntry(Object key) { |
| throw new IllegalStateException("destroyRecoveredEntry should not be called during recovery"); |
| } |
| |
| @Override |
| public void copyRecoveredEntries(RegionMap rm) { |
| throw new IllegalStateException("copyRecoveredEntries should not be called during recovery"); |
| } |
| |
| @Override |
| public void foreachRegionEntry(LocalRegion.RegionEntryCallback callback) { |
| throw new IllegalStateException("foreachRegionEntry should not be called during recovery"); |
| } |
| |
| @Override |
| public boolean lruLimitExceeded() { |
| return getRecoveredEntryMap().lruLimitExceeded(this); |
| } |
| |
| @Override |
| public DiskStoreID getDiskStoreID() { |
| return getDiskStore().getDiskStoreID(); |
| } |
| |
| @Override |
| 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 |
| |
| } |
| |
| @Override |
| public void releaseReadLock() { |
| // not needed |
| } |
| |
| @Override |
| public void updateSizeOnFaultIn(Object key, int newSize, int bytesOnDisk) { |
| // only used by bucket regions |
| } |
| |
| @Override |
| public int calculateValueSize(Object val) { |
| return 0; |
| } |
| |
| @Override |
| public RegionMap getRegionMap() { |
| return getRecoveredEntryMap(); |
| } |
| |
| @Override |
| public void close() { |
| RegionMap rm = getRecoveredEntryMap(); |
| if (rm != null) { |
| rm.close(null); |
| } |
| } |
| |
| @Override |
| public void handleDiskAccessException(DiskAccessException dae) { |
| getDiskStore().getCache().getLogger().error( |
| String.format( |
| "A DiskAccessException has occurred while recovering values asynchronously from disk for region %s.", |
| getName()), |
| dae); |
| |
| } |
| |
| @Override |
| public boolean didClearCountChange() { |
| return false; |
| } |
| |
| @Override |
| public CancelCriterion getCancelCriterion() { |
| return getDiskStore().getCancelCriterion(); |
| } |
| |
| @Override |
| public boolean isSync() { |
| return true; |
| } |
| |
| @Override |
| public void endRead(long start, long end, long bytesRead) { |
| // do nothing |
| } |
| |
| @Override |
| public boolean isRegionClosed() { |
| return false; |
| } |
| |
| @Override |
| public void initializeStats(long numEntriesInVM, long numOverflowOnDisk, |
| long numOverflowBytesOnDisk) { |
| this.numEntriesInVM.set(numEntriesInVM); |
| this.numOverflowOnDisk.set(numOverflowOnDisk); |
| this.numOverflowBytesOnDisk.set(numOverflowBytesOnDisk); |
| } |
| |
| @Override |
| public EvictionController getExistingController(InternalRegionArguments internalArgs) { |
| if (isBucket()) { |
| return this.getDiskStore().getOrCreatePRLRUStats(this); |
| } |
| return null; |
| } |
| } |