| /* |
| * 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.uima.cas.impl; |
| |
| import static java.lang.Math.max; |
| import static java.lang.Math.min; |
| import static org.apache.uima.cas.SerialFormat.BINARY_TSI; |
| import static org.apache.uima.cas.SerialFormat.COMPRESSED_FILTERED_TSI; |
| import static org.apache.uima.cas.SerialFormat.COMPRESSED_TSI; |
| import static org.apache.uima.cas.SerialFormat.SERIALIZED_TSI; |
| import static org.apache.uima.util.CasCreationUtils.createCas; |
| import static org.apache.uima.util.CasIOUtils.load; |
| import static org.apache.uima.util.CasIOUtils.save; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Random; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| |
| import org.apache.uima.UIMAFramework; |
| import org.apache.uima.cas.CAS; |
| import org.apache.uima.cas.SerialFormat; |
| import org.apache.uima.cas.text.AnnotationFS; |
| import org.apache.uima.resource.metadata.TypeSystemDescription; |
| import org.junit.jupiter.api.Test; |
| |
| public class ConcurrentBinarySerializationTest { |
| /** |
| * Serialization of the CAS is not inherently thread-safe. This test tries to run multiple |
| * serializations of the CAS in parallel to trigger a situation where an invalid serialization is |
| * generated - to be found by deserializing again. To fix this, an internal synchronization in the |
| * CAS was added. |
| * |
| * @see <a href="https://issues.apache.org/jira/browse/UIMA-6162">UIMA 6162</a> |
| */ |
| @Test |
| public void thatConcurrentSerializationWorks() throws Exception { |
| final SerialFormat[] formats = { BINARY_TSI, SERIALIZED_TSI, COMPRESSED_FILTERED_TSI, |
| COMPRESSED_TSI }; |
| final int typeCount = 10; |
| |
| // Set up a couple of custom types |
| TypeSystemDescription tsd = UIMAFramework.getResourceSpecifierFactory() |
| .createTypeSystemDescription(); |
| for (int n = 0; n < typeCount; n++) { |
| tsd.addType("Type" + n, "", CAS.TYPE_NAME_ANNOTATION); |
| } |
| |
| CAS cas = createCas(tsd, null, null); |
| cas.setDocumentText("This is a test."); |
| |
| Random rnd = new Random(); |
| |
| // Set up a couple of random annotations |
| for (int i = 0; i < 1000; i++) { |
| String type = "Type" + rnd.nextInt(typeCount); |
| int a = rnd.nextInt(cas.getDocumentText().length()); |
| int b = rnd.nextInt(cas.getDocumentText().length()); |
| AnnotationFS ann = cas.createAnnotation(cas.getTypeSystem().getType(type), min(a, b), |
| max(a, b)); |
| cas.addFsToIndexes(ann); |
| } |
| |
| // Schedulable task which serializes a CAS and then deserializes it again to test that it |
| // was serialized correctly. We randomly alternate between different binary serialization |
| // formats which all include type system information. |
| Callable<Boolean> casSerDeser = () -> { |
| try { |
| SerialFormat fmt = formats[rnd.nextInt(formats.length)]; |
| |
| // System.out.printf("Serializing as %s...%n", fmt); |
| ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| save(cas, bos, fmt); |
| |
| // System.out.printf("Deserializing...%n"); |
| CAS outCas = createCas((TypeSystemDescription) null, null, null); |
| load(new ByteArrayInputStream(bos.toByteArray()), outCas); |
| } catch (Exception e) { |
| // System.out.printf("Failure: %s%n", e.getMessage()); |
| return false; |
| } |
| return true; |
| }; |
| |
| // Schedule concurrent serializations |
| List<Future<Boolean>> results = new ArrayList<>(); |
| ExecutorService executor = Executors.newFixedThreadPool(4); |
| for (int n = 0; n < 100; n++) { |
| results.add(executor.submit(casSerDeser)); |
| } |
| |
| // All futures must complete without returning an exception |
| assertTrue(results.stream().allMatch(r -> { |
| try { |
| return r.get() == true; |
| } catch (Exception e) { |
| return false; |
| } |
| })); |
| } |
| } |