| /* |
| * 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.cache.lucene.internal.directory; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.UUID; |
| |
| import org.apache.lucene.store.BaseDirectory; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.store.IndexInput; |
| import org.apache.lucene.store.IndexOutput; |
| import org.apache.lucene.store.OutputStreamIndexOutput; |
| import org.apache.lucene.store.SingleInstanceLockFactory; |
| |
| import org.apache.geode.cache.lucene.internal.filesystem.File; |
| import org.apache.geode.cache.lucene.internal.filesystem.FileSystem; |
| import org.apache.geode.cache.lucene.internal.filesystem.FileSystemStats; |
| |
| /** |
| * An implementation of Directory that stores data in geode regions. |
| * |
| * Directory is an interface to file/RAM storage for lucene. This class uses the {@link FileSystem} |
| * class to store the data in the provided geode regions. |
| */ |
| public class RegionDirectory extends BaseDirectory { |
| |
| private final FileSystem fs; |
| |
| /** |
| * Create a region directory with a given file and chunk region. These regions may be bucket |
| * regions or they may be replicated regions. |
| */ |
| public RegionDirectory(Map fileAndChunkRegion, FileSystemStats stats) { |
| super(new SingleInstanceLockFactory()); |
| fs = new FileSystem(fileAndChunkRegion, stats); |
| } |
| |
| @Override |
| public String[] listAll() throws IOException { |
| ensureOpen(); |
| String[] array = fs.listFileNames().toArray(new String[] {}); |
| Arrays.sort(array); |
| return array; |
| } |
| |
| @Override |
| public void deleteFile(String name) throws IOException { |
| ensureOpen(); |
| fs.deleteFile(name); |
| } |
| |
| @Override |
| public long fileLength(String name) throws IOException { |
| ensureOpen(); |
| return fs.getFile(name).getLength(); |
| } |
| |
| @Override |
| public IndexOutput createOutput(final String name, final IOContext context) throws IOException { |
| ensureOpen(); |
| final File file = fs.createFile(name); |
| final OutputStream out = file.getOutputStream(); |
| |
| return new OutputStreamIndexOutput(name, name, out, 1000); |
| } |
| |
| @Override |
| public IndexOutput createTempOutput(String prefix, String suffix, IOContext context) |
| throws IOException { |
| String name = prefix + "_temp_" + UUID.randomUUID() + suffix; |
| final File file = fs.createTemporaryFile(name); |
| final OutputStream out = file.getOutputStream(); |
| |
| return new OutputStreamIndexOutput(name, name, out, 1000); |
| } |
| |
| @Override |
| public void sync(Collection<String> names) throws IOException { |
| ensureOpen(); |
| // Region does not need to sync to disk |
| } |
| |
| @Override |
| public void syncMetaData() throws IOException { |
| ensureOpen(); |
| // Region does not need to sync to disk |
| } |
| |
| @Override |
| public void rename(String source, String dest) throws IOException { |
| ensureOpen(); |
| fs.renameFile(source, dest); |
| } |
| |
| @Override |
| public IndexInput openInput(String name, IOContext context) throws IOException { |
| ensureOpen(); |
| final File file = fs.getFile(name); |
| return new FileIndexInput(name, file); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| isOpen = false; |
| } |
| |
| /** |
| * For testing, the file system |
| */ |
| public FileSystem getFileSystem() { |
| return fs; |
| } |
| |
| |
| |
| } |