| using Lucene.Net.Documents; |
| using NUnit.Framework; |
| using System; |
| using System.IO; |
| using Assert = Lucene.Net.TestFramework.Assert; |
| using Console = Lucene.Net.Util.SystemConsole; |
| |
| namespace Lucene.Net.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. |
| */ |
| |
| using Directory = Lucene.Net.Store.Directory; |
| using Document = Documents.Document; |
| using Field = Field; |
| using FilterDirectory = Lucene.Net.Store.FilterDirectory; |
| using FSDirectory = Lucene.Net.Store.FSDirectory; |
| using IndexOutput = Lucene.Net.Store.IndexOutput; |
| using IndexSearcher = Lucene.Net.Search.IndexSearcher; |
| using IOContext = Lucene.Net.Store.IOContext; |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| using MockAnalyzer = Lucene.Net.Analysis.MockAnalyzer; |
| using TermQuery = Lucene.Net.Search.TermQuery; |
| using TopDocs = Lucene.Net.Search.TopDocs; |
| |
| [TestFixture] |
| public class TestCrashCausesCorruptIndex : LuceneTestCase |
| { |
| internal DirectoryInfo path; |
| |
| /// <summary> |
| /// LUCENE-3627: this test fails. |
| /// </summary> |
| [Test] |
| public virtual void TestCrashCorruptsIndexing() |
| { |
| path = CreateTempDir("testCrashCorruptsIndexing"); |
| |
| IndexAndCrashOnCreateOutputSegments2(); |
| |
| SearchForFleas(2); |
| |
| IndexAfterRestart(); |
| |
| SearchForFleas(3); |
| } |
| |
| /// <summary> |
| /// index 1 document and commit. |
| /// prepare for crashing. |
| /// index 1 more document, and upon commit, creation of segments_2 will crash. |
| /// </summary> |
| private void IndexAndCrashOnCreateOutputSegments2() |
| { |
| Directory realDirectory = FSDirectory.Open(path); |
| CrashAfterCreateOutput crashAfterCreateOutput = new CrashAfterCreateOutput(realDirectory); |
| |
| // NOTE: cannot use RandomIndexWriter because it |
| // sometimes commits: |
| IndexWriter indexWriter = new IndexWriter(crashAfterCreateOutput, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random))); |
| |
| indexWriter.AddDocument(Document); |
| // writes segments_1: |
| indexWriter.Commit(); |
| |
| crashAfterCreateOutput.GetCrashAfterCreateOutput = "segments_2"; |
| indexWriter.AddDocument(Document); |
| try |
| { |
| // tries to write segments_2 but hits fake exc: |
| indexWriter.Commit(); |
| Assert.Fail("should have hit CrashingException"); |
| } |
| #pragma warning disable 168 |
| catch (CrashingException e) |
| #pragma warning restore 168 |
| { |
| // expected |
| } |
| // writes segments_3 |
| indexWriter.Dispose(); |
| Assert.IsFalse(SlowFileExists(realDirectory, "segments_2")); |
| crashAfterCreateOutput.Dispose(); |
| } |
| |
| /// <summary> |
| /// Attempts to index another 1 document. |
| /// </summary> |
| private void IndexAfterRestart() |
| { |
| Directory realDirectory = NewFSDirectory(path); |
| |
| // LUCENE-3627 (before the fix): this line fails because |
| // it doesn't know what to do with the created but empty |
| // segments_2 file |
| IndexWriter indexWriter = new IndexWriter(realDirectory, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random))); |
| |
| // currently the test fails above. |
| // however, to test the fix, the following lines should pass as well. |
| indexWriter.AddDocument(Document); |
| indexWriter.Dispose(); |
| Assert.IsFalse(SlowFileExists(realDirectory, "segments_2")); |
| realDirectory.Dispose(); |
| } |
| |
| /// <summary> |
| /// Run an example search. |
| /// </summary> |
| private void SearchForFleas(int expectedTotalHits) |
| { |
| Directory realDirectory = NewFSDirectory(path); |
| IndexReader indexReader = DirectoryReader.Open(realDirectory); |
| IndexSearcher indexSearcher = NewSearcher(indexReader); |
| TopDocs topDocs = indexSearcher.Search(new TermQuery(new Term(TEXT_FIELD, "fleas")), 10); |
| Assert.IsNotNull(topDocs); |
| Assert.AreEqual(expectedTotalHits, topDocs.TotalHits); |
| indexReader.Dispose(); |
| realDirectory.Dispose(); |
| } |
| |
| private const string TEXT_FIELD = "text"; |
| |
| /// <summary> |
| /// Gets a document with content "my dog has fleas". |
| /// </summary> |
| private Document Document |
| { |
| get |
| { |
| Document document = new Document(); |
| document.Add(NewTextField(TEXT_FIELD, "my dog has fleas", Field.Store.NO)); |
| return document; |
| } |
| } |
| |
| /// <summary> |
| /// The marker RuntimeException that we use in lieu of an |
| /// actual machine crash. |
| /// </summary> |
| private class CrashingException : Exception |
| { |
| public CrashingException(string msg) |
| : base(msg) |
| { |
| } |
| } |
| |
| /// <summary> |
| /// this test class provides direct access to "simulating" a crash right after |
| /// realDirectory.CreateOutput(..) has been called on a certain specified name. |
| /// </summary> |
| private class CrashAfterCreateOutput : FilterDirectory |
| { |
| internal string crashAfterCreateOutput; |
| |
| public CrashAfterCreateOutput(Directory realDirectory) |
| : base(realDirectory) |
| { |
| SetLockFactory(realDirectory.LockFactory); |
| } |
| |
| public virtual string GetCrashAfterCreateOutput |
| { |
| set => this.crashAfterCreateOutput = value; |
| } |
| |
| public override IndexOutput CreateOutput(string name, IOContext cxt) |
| { |
| IndexOutput indexOutput = m_input.CreateOutput(name, cxt); |
| if (null != crashAfterCreateOutput && name.Equals(crashAfterCreateOutput, StringComparison.Ordinal)) |
| { |
| // CRASH! |
| indexOutput.Dispose(); |
| if (Verbose) |
| { |
| Console.WriteLine("TEST: now crash"); |
| Console.WriteLine(new Exception().StackTrace); |
| } |
| throw new CrashingException("crashAfterCreateOutput " + crashAfterCreateOutput); |
| } |
| return indexOutput; |
| } |
| } |
| } |
| } |