| /* |
| * 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 java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.geode.cache.DiskAccessException; |
| import org.apache.geode.internal.Assert; |
| import org.apache.geode.internal.cache.entries.DiskEntry; |
| import org.apache.geode.internal.cache.entries.DiskEntry.RecoveredEntry; |
| import org.apache.geode.internal.cache.persistence.DiskRegionView; |
| |
| /** |
| * An implementation if DiskRegion used for offline export. After each oplog is recovered this disk |
| * region passes the contents recovered from the oplog to an ExportWriter, which can export those |
| * entries. |
| */ |
| public class ExportDiskRegion extends ValidatingDiskRegion { |
| |
| private Map<Object, RecoveredEntry> currentOplogEntries = new HashMap(); |
| private ExportWriter writer; |
| |
| |
| public ExportDiskRegion(DiskStoreImpl ds, DiskRegionView drv, ExportWriter writer) { |
| super(ds, drv); |
| this.writer = writer; |
| } |
| |
| @Override |
| public DiskEntry initializeRecoveredEntry(Object key, RecoveredEntry re) { |
| if (re.getValue() == null) { |
| Assert.fail("Value should not have been null for key " + key); |
| } |
| currentOplogEntries.put(key, re); |
| return super.initializeRecoveredEntry(key, re); |
| } |
| |
| @Override |
| public DiskEntry updateRecoveredEntry(Object key, RecoveredEntry re) { |
| currentOplogEntries.put(key, re); |
| return super.updateRecoveredEntry(key, re); |
| } |
| |
| @Override |
| public void destroyRecoveredEntry(Object key) { |
| currentOplogEntries.remove(key); |
| super.destroyRecoveredEntry(key); |
| } |
| |
| @Override |
| public void oplogRecovered(long oplogId) { |
| try { |
| writer.writeBatch(currentOplogEntries); |
| } catch (IOException e) { |
| throw new DiskAccessException("Error during export", e, this.getDiskStore()); |
| } |
| currentOplogEntries.clear(); |
| } |
| |
| public interface ExportWriter { |
| /** |
| * Write a batch of entries to the export system. The value in RecoveredEntry is will not be |
| * null, so there is no need to fault in the value in the implementor |
| * |
| */ |
| void writeBatch(Map<Object, RecoveredEntry> entries) throws IOException; |
| } |
| |
| } |