| /* |
| * 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.ignite.internal.processors.cache.persistence.wal.io; |
| |
| import java.io.IOException; |
| import org.apache.ignite.internal.processors.cache.persistence.file.FileIO; |
| import org.apache.ignite.internal.processors.cache.persistence.file.FileIOFactory; |
| import org.apache.ignite.internal.processors.cache.persistence.wal.ByteBufferExpander; |
| import org.apache.ignite.internal.processors.cache.persistence.wal.FileDescriptor; |
| import org.apache.ignite.internal.processors.cache.persistence.wal.aware.SegmentAware; |
| import org.apache.ignite.internal.processors.cache.persistence.wal.SegmentRouter; |
| |
| /** |
| * Implementation of factory to provide I/O interfaces for read primitives with files. |
| * |
| * Creating {@link FileInput} with ability locked segment during reading. |
| */ |
| public class LockedSegmentFileInputFactory implements SegmentFileInputFactory { |
| /** Holder of actual information of latest manipulation on WAL segments. */ |
| private final SegmentAware segmentAware; |
| /** Manager of segment location. */ |
| private final SegmentRouter segmentRouter; |
| /** {@link FileIO} factory definition.*/ |
| private final FileIOFactory fileIOFactory; |
| |
| /** |
| * @param segmentAware Holder of actual information of latest manipulation on WAL segments. |
| * @param segmentRouter Manager of segment location. |
| * @param fileIOFactory {@link FileIO} factory definition. |
| */ |
| public LockedSegmentFileInputFactory( |
| SegmentAware segmentAware, |
| SegmentRouter segmentRouter, |
| FileIOFactory fileIOFactory) { |
| this.segmentAware = segmentAware; |
| this.segmentRouter = segmentRouter; |
| this.fileIOFactory = fileIOFactory; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public FileInput createFileInput(SegmentIO segmentIO, ByteBufferExpander buf) throws IOException { |
| return new LockedReadFileInput( |
| buf, |
| segmentIO, |
| segmentAware, |
| id -> { |
| FileDescriptor segment = segmentRouter.findSegment(id); |
| |
| return segment.toIO(fileIOFactory); |
| } |
| ); |
| } |
| } |