| /* |
| * 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.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.lucene.mockfile.ExtrasFS; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| public class TestDirectory extends LuceneTestCase { |
| |
| // Test that different instances of FSDirectory can coexist on the same |
| // path, can read, write, and lock files. |
| public void testDirectInstantiation() throws Exception { |
| final Path path = createTempDir("testDirectInstantiation"); |
| |
| final byte[] largeBuffer = new byte[random().nextInt(256*1024)], largeReadBuffer = new byte[largeBuffer.length]; |
| for (int i = 0; i < largeBuffer.length; i++) { |
| largeBuffer[i] = (byte) i; // automatically loops with modulo |
| } |
| |
| final List<FSDirectory> dirs0 = new ArrayList<>(); |
| dirs0.add(new SimpleFSDirectory(path)); |
| dirs0.add(new NIOFSDirectory(path)); |
| if (hasWorkingMMapOnWindows()) { |
| dirs0.add(new MMapDirectory(path)); |
| } |
| final FSDirectory[] dirs = dirs0.stream().toArray(FSDirectory[]::new); |
| |
| for (int i=0; i<dirs.length; i++) { |
| FSDirectory dir = dirs[i]; |
| dir.ensureOpen(); |
| String fname = "foo." + i; |
| String lockname = "foo" + i + ".lck"; |
| IndexOutput out = dir.createOutput(fname, newIOContext(random())); |
| out.writeByte((byte)i); |
| out.writeBytes(largeBuffer, largeBuffer.length); |
| out.close(); |
| |
| for (int j=0; j<dirs.length; j++) { |
| FSDirectory d2 = dirs[j]; |
| d2.ensureOpen(); |
| assertTrue(slowFileExists(d2, fname)); |
| assertEquals(1 + largeBuffer.length, d2.fileLength(fname)); |
| |
| // don't do read tests if unmapping is not supported! |
| if (d2 instanceof MMapDirectory && !((MMapDirectory) d2).getUseUnmap()) |
| continue; |
| |
| IndexInput input = d2.openInput(fname, newIOContext(random())); |
| assertEquals((byte)i, input.readByte()); |
| // read array with buffering enabled |
| Arrays.fill(largeReadBuffer, (byte)0); |
| input.readBytes(largeReadBuffer, 0, largeReadBuffer.length, true); |
| assertArrayEquals(largeBuffer, largeReadBuffer); |
| // read again without using buffer |
| input.seek(1L); |
| Arrays.fill(largeReadBuffer, (byte)0); |
| input.readBytes(largeReadBuffer, 0, largeReadBuffer.length, false); |
| assertArrayEquals(largeBuffer, largeReadBuffer); |
| input.close(); |
| } |
| |
| // delete with a different dir |
| dirs[(i+1)%dirs.length].deleteFile(fname); |
| |
| for (int j=0; j<dirs.length; j++) { |
| FSDirectory d2 = dirs[j]; |
| assertFalse(slowFileExists(d2, fname)); |
| } |
| |
| Lock lock = dir.obtainLock(lockname); |
| |
| for (Directory other : dirs) { |
| expectThrows(LockObtainFailedException.class, () -> { |
| other.obtainLock(lockname); |
| }); |
| } |
| |
| lock.close(); |
| |
| // now lock with different dir |
| lock = dirs[(i+1)%dirs.length].obtainLock(lockname); |
| lock.close(); |
| } |
| |
| for (int i=0; i<dirs.length; i++) { |
| FSDirectory dir = dirs[i]; |
| dir.ensureOpen(); |
| dir.close(); |
| assertFalse(dir.isOpen); |
| } |
| } |
| |
| // LUCENE-1468 |
| @SuppressWarnings("resource") |
| public void testCopySubdir() throws Throwable { |
| Path path = createTempDir("testsubdir"); |
| Files.createDirectory(path.resolve("subdir")); |
| FSDirectory fsDir = new SimpleFSDirectory(path); |
| RAMDirectory ramDir = new RAMDirectory(fsDir, newIOContext(random())); |
| List<String> files = Arrays.asList(ramDir.listAll()); |
| assertFalse(files.contains("subdir")); |
| } |
| |
| // LUCENE-1468 |
| public void testNotDirectory() throws Throwable { |
| Path path = createTempDir("testnotdir"); |
| Directory fsDir = new SimpleFSDirectory(path); |
| try { |
| IndexOutput out = fsDir.createOutput("afile", newIOContext(random())); |
| out.close(); |
| assertTrue(slowFileExists(fsDir, "afile")); |
| expectThrows(IOException.class, () -> { |
| new SimpleFSDirectory(path.resolve("afile")); |
| }); |
| } finally { |
| fsDir.close(); |
| } |
| } |
| |
| public void testListAll() throws Throwable { |
| Path dir = createTempDir("testdir"); |
| assumeFalse("this test does not expect extra files", dir.getFileSystem().provider() instanceof ExtrasFS); |
| Path file1 = Files.createFile(dir.resolve("tempfile1")); |
| Path file2 = Files.createFile(dir.resolve("tempfile2")); |
| Set<String> files = new HashSet<>(Arrays.asList(FSDirectory.listAll(dir))); |
| |
| assertTrue(files.size() == 2); |
| assertTrue(files.contains(file1.getFileName().toString())); |
| assertTrue(files.contains(file2.getFileName().toString())); |
| } |
| } |
| |