| /* |
| * 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.lucene.store; |
| |
| |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Random; |
| |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.index.DirectoryReader; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.IndexWriter; |
| import org.apache.lucene.index.IndexWriterConfig.OpenMode; |
| import org.apache.lucene.index.IndexWriterConfig; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.util.English; |
| import org.apache.lucene.util.IOUtils; |
| |
| /** |
| * JUnit testcase to test RAMDirectory. RAMDirectory itself is used in many testcases, |
| * but not one of them uses an different constructor other than the default constructor. |
| */ |
| public class TestRAMDirectory extends BaseDirectoryTestCase { |
| |
| @Override |
| protected Directory getDirectory(Path path) { |
| return new RAMDirectory(); |
| } |
| |
| // add enough document so that the index will be larger than RAMDirectory.READ_BUFFER_SIZE |
| private static final int DOCS_TO_ADD = 500; |
| |
| private Path buildIndex() throws IOException { |
| Path path = createTempDir("buildIndex"); |
| |
| Directory dir = newFSDirectory(path); |
| IndexWriter writer = new IndexWriter(dir, new IndexWriterConfig( |
| new MockAnalyzer(random())).setOpenMode(OpenMode.CREATE)); |
| // add some documents |
| Document doc = null; |
| for (int i = 0; i < DOCS_TO_ADD; i++) { |
| doc = new Document(); |
| doc.add(newStringField("content", English.intToEnglish(i).trim(), Field.Store.YES)); |
| writer.addDocument(doc); |
| } |
| assertEquals(DOCS_TO_ADD, writer.getDocStats().maxDoc); |
| writer.close(); |
| dir.close(); |
| |
| return path; |
| } |
| |
| // LUCENE-1468 |
| public void testCopySubdir() throws Throwable { |
| Path path = createTempDir("testsubdir"); |
| FSDirectory fsDir = null; |
| try { |
| Files.createDirectory(path.resolve("subdir")); |
| fsDir = new SimpleFSDirectory(path); |
| RAMDirectory ramDir = new RAMDirectory(fsDir, newIOContext(random())); |
| List<String> files = Arrays.asList(ramDir.listAll()); |
| assertFalse(files.contains("subdir")); |
| } finally { |
| IOUtils.close(fsDir); |
| } |
| } |
| |
| public void testRAMDirectory () throws IOException { |
| Path indexDir = buildIndex(); |
| |
| FSDirectory dir = new SimpleFSDirectory(indexDir); |
| MockDirectoryWrapper ramDir = new MockDirectoryWrapper(random(), new RAMDirectory(dir, newIOContext(random()))); |
| |
| // close the underlaying directory |
| dir.close(); |
| |
| // Check size |
| assertEquals(ramDir.sizeInBytes(), ramDir.getRecomputedSizeInBytes()); |
| |
| // open reader to test document count |
| IndexReader reader = DirectoryReader.open(ramDir); |
| assertEquals(DOCS_TO_ADD, reader.numDocs()); |
| |
| // open search zo check if all doc's are there |
| IndexSearcher searcher = newSearcher(reader); |
| |
| // search for all documents |
| for (int i = 0; i < DOCS_TO_ADD; i++) { |
| Document doc = searcher.doc(i); |
| assertTrue(doc.getField("content") != null); |
| } |
| |
| // cleanup |
| reader.close(); |
| } |
| |
| private static final int NUM_THREADS = 10; |
| private static final int DOCS_PER_THREAD = 40; |
| |
| public void testRAMDirectorySize() throws IOException, InterruptedException { |
| |
| Path indexDir = buildIndex(); |
| |
| FSDirectory dir = new SimpleFSDirectory(indexDir); |
| final MockDirectoryWrapper ramDir = new MockDirectoryWrapper(random(), new RAMDirectory(dir, newIOContext(random()))); |
| dir.close(); |
| |
| final IndexWriter writer = new IndexWriter(ramDir, new IndexWriterConfig( |
| new MockAnalyzer(random())).setOpenMode(OpenMode.APPEND)); |
| writer.forceMerge(1); |
| |
| assertEquals(ramDir.sizeInBytes(), ramDir.getRecomputedSizeInBytes()); |
| |
| Thread[] threads = new Thread[NUM_THREADS]; |
| for (int i = 0; i< NUM_THREADS; i++) { |
| final int num = i; |
| threads[i] = new Thread(){ |
| @Override |
| public void run() { |
| for (int j = 1; j< DOCS_PER_THREAD; j++) { |
| Document doc = new Document(); |
| doc.add(newStringField("sizeContent", English.intToEnglish(num* DOCS_PER_THREAD +j).trim(), Field.Store.YES)); |
| try { |
| writer.addDocument(doc); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| }; |
| } |
| for (int i = 0; i< NUM_THREADS; i++) { |
| threads[i].start(); |
| } |
| for (int i = 0; i< NUM_THREADS; i++) { |
| threads[i].join(); |
| } |
| |
| writer.forceMerge(1); |
| assertEquals(ramDir.sizeInBytes(), ramDir.getRecomputedSizeInBytes()); |
| |
| writer.close(); |
| } |
| |
| public void testShouldThrowEOFException() throws Exception { |
| final Random random = random(); |
| |
| try (Directory dir = newDirectory()) { |
| final int len = 16 + random().nextInt(2048) / 16 * 16; |
| final byte[] bytes = new byte[len]; |
| |
| try (IndexOutput os = dir.createOutput("foo", newIOContext(random))) { |
| os.writeBytes(bytes, bytes.length); |
| } |
| |
| try (IndexInput is = dir.openInput("foo", newIOContext(random))) { |
| expectThrows(EOFException.class, () -> { |
| is.seek(0); |
| // Here, I go past EOF. |
| is.seek(len + random().nextInt(2048)); |
| // since EOF is not enforced by the previous call in RAMInputStream |
| // this call to readBytes should throw the exception. |
| is.readBytes(bytes, 0, 16); |
| }); |
| } |
| } |
| } |
| } |