| package org.apache.lucene.index; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Random; |
| |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.store.BaseDirectoryWrapper; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.IOContext; |
| import org.apache.lucene.store.MockDirectoryWrapper; |
| import org.apache.lucene.util.LineFileDocs; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.apache.lucene.util.TestUtil; |
| |
| /** |
| * Test that the same file name, but from a different index, is detected as foreign. |
| */ |
| public class TestSwappedIndexFiles extends LuceneTestCase { |
| public void test() throws Exception { |
| Directory dir1 = newDirectory(); |
| Directory dir2 = newDirectory(); |
| |
| if (dir1 instanceof MockDirectoryWrapper) { |
| // otherwise we can have unref'd files left in the index that won't be visited when opening a reader and lead to scary looking false failures: |
| ((MockDirectoryWrapper) dir1).setEnableVirusScanner(false); |
| } |
| if (dir2 instanceof MockDirectoryWrapper) { |
| // otherwise we can have unref'd files left in the index that won't be visited when opening a reader and lead to scary looking false failures: |
| ((MockDirectoryWrapper) dir2).setEnableVirusScanner(false); |
| } |
| |
| // Disable CFS 80% of the time so we can truncate individual files, but the other 20% of the time we test truncation of .cfs/.cfe too: |
| boolean useCFS = random().nextInt(5) == 1; |
| |
| // Use LineFileDocs so we (hopefully) get most Lucene features |
| // tested, e.g. IntPoint was recently added to it: |
| LineFileDocs docs = new LineFileDocs(random()); |
| Document doc = docs.nextDoc(); |
| long seed = random().nextLong(); |
| |
| indexOneDoc(seed, dir1, doc, useCFS); |
| indexOneDoc(seed, dir2, doc, useCFS); |
| |
| swapFiles(dir1, dir2); |
| dir1.close(); |
| dir2.close(); |
| } |
| |
| private void indexOneDoc(long seed, Directory dir, Document doc, boolean useCFS) throws IOException { |
| Random random = new Random(seed); |
| IndexWriterConfig conf = newIndexWriterConfig(new MockAnalyzer(random)); |
| conf.setCodec(TestUtil.getDefaultCodec()); |
| |
| if (useCFS == false) { |
| conf.setUseCompoundFile(false); |
| conf.getMergePolicy().setNoCFSRatio(0.0); |
| } else { |
| conf.setUseCompoundFile(true); |
| conf.getMergePolicy().setNoCFSRatio(1.0); |
| } |
| |
| RandomIndexWriter w = new RandomIndexWriter(random, dir, conf); |
| w.addDocument(doc); |
| w.close(); |
| } |
| |
| private void swapFiles(Directory dir1, Directory dir2) throws IOException { |
| for(String name : dir1.listAll()) { |
| if (name.equals(IndexWriter.WRITE_LOCK_NAME)) { |
| continue; |
| } |
| swapOneFile(dir1, dir2, name); |
| } |
| } |
| |
| private void swapOneFile(Directory dir1, Directory dir2, String victim) throws IOException { |
| try (BaseDirectoryWrapper dirCopy = newDirectory()) { |
| dirCopy.setCheckIndexOnClose(false); |
| |
| // Copy all files from dir1 to dirCopy, except victim which we copy from dir2: |
| for(String name : dir1.listAll()) { |
| if (name.equals(victim) == false) { |
| dirCopy.copyFrom(dir1, name, name, IOContext.DEFAULT); |
| } else { |
| dirCopy.copyFrom(dir2, name, name, IOContext.DEFAULT); |
| } |
| dirCopy.sync(Collections.singleton(name)); |
| } |
| |
| try { |
| // NOTE: we .close so that if the test fails (truncation not detected) we don't also get all these confusing errors about open files: |
| DirectoryReader.open(dirCopy).close(); |
| fail("wrong file " + victim + " not detected"); |
| } catch (CorruptIndexException | EOFException | IndexFormatTooOldException e) { |
| // expected |
| } |
| |
| // CheckIndex should also fail: |
| try { |
| TestUtil.checkIndex(dirCopy, true, true); |
| fail("wrong file " + victim + " not detected"); |
| } catch (CorruptIndexException | EOFException | IndexFormatTooOldException e) { |
| // expected |
| } |
| } |
| } |
| } |