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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.internal.cache.snapshot;
import java.io.IOException;
import java.util.Map.Entry;
import com.gemstone.gemfire.cache.EntryDestroyedException;
import com.gemstone.gemfire.cache.Region;
import com.gemstone.gemfire.cache.snapshot.SnapshotOptions;
import com.gemstone.gemfire.internal.cache.LocalRegion;
import com.gemstone.gemfire.internal.cache.snapshot.RegionSnapshotServiceImpl.ExportSink;
import com.gemstone.gemfire.internal.cache.snapshot.RegionSnapshotServiceImpl.Exporter;
import com.gemstone.gemfire.internal.cache.snapshot.SnapshotPacket.SnapshotRecord;
/**
* Exports snapshot data directly to the supplied {@link ExportSink}. All data
* is assumed to be local so snapshot data is obtained directly by iterating
* over the {@link Region#entrySet()}.
*
* @author bakera
*
* @param the key type
* @param the value type
*/
public class LocalExporter implements Exporter {
@Override
public long export(Region region, ExportSink sink, SnapshotOptions options) throws IOException {
LocalRegion local = RegionSnapshotServiceImpl.getLocalRegion(region);
long count = 0;
for (Entry entry : region.entrySet()) {
try {
if (options.getFilter() == null || options.getFilter().accept(entry)) {
sink.write(new SnapshotRecord(local, entry));
count++;
}
} catch (EntryDestroyedException e) {
// continue to next entry
}
}
return count;
}
}