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The following commit(s) were added to refs/heads/master by this push:
new f1093f6 IVY-1628 Add a testcase to reproduce the issue and verify the
fix
f1093f6 is described below
commit f1093f67d43c29baaa76c42cb51488cd4d61fd81
Author: Jaikiran Pai <[email protected]>
AuthorDate: Thu Mar 25 09:51:06 2021 +0530
IVY-1628 Add a testcase to reproduce the issue and verify the fix
---
.../apache/ivy/util/MessageLoggerEngineTest.java | 87 ++++++++++++++++++++++
1 file changed, 87 insertions(+)
diff --git a/test/java/org/apache/ivy/util/MessageLoggerEngineTest.java
b/test/java/org/apache/ivy/util/MessageLoggerEngineTest.java
new file mode 100644
index 0000000..e48f98f
--- /dev/null
+++ b/test/java/org/apache/ivy/util/MessageLoggerEngineTest.java
@@ -0,0 +1,87 @@
+/*
+ * 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.ivy.util;
+
+import org.junit.Test;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+
+public class MessageLoggerEngineTest {
+
+ /**
+ * Tests the issue reported in IVY-1628 and verifies that the {@link
MessageLogger#sumupProblems()}
+ * doesn't run into {@link java.util.ConcurrentModificationException} when
multiple threads are
+ * using the logger
+ */
+ @Test
+ public void testConcurrentSumupProblems() throws Exception {
+ final MessageLoggerEngine engine = new MessageLoggerEngine();
+ final LoggingTask loggingTask = new LoggingTask(engine);
+ final ExecutorService executor = Executors.newFixedThreadPool(1);
+ final Future<Void> result;
+ try {
+ result = executor.submit(loggingTask);
+ // keep invoking sumupProblems in this thread while the other
thread is logging
+ // error and warn messages
+ for (int i = 0; i < 1000; i++) {
+ engine.sumupProblems();
+ }
+ loggingTask.stop = true;
+ } finally {
+ loggingTask.stop = true;
+ executor.shutdownNow();
+ }
+ result.get(2, TimeUnit.SECONDS);
+ }
+
+ private final class LoggingTask implements Callable<Void> {
+
+ private final MessageLoggerEngine engine;
+ private volatile boolean stop;
+
+ private LoggingTask(final MessageLoggerEngine engine) {
+ this.engine = engine;
+ }
+
+ @Override
+ public Void call() throws Exception {
+ do {
+ for (int i = 0; i < 1000; i++) {
+ if (stop) {
+ return null;
+ }
+ if (i % 2 == 0) {
+ engine.error("Dummy error");
+ } else {
+ engine.warn("Dummy warn");
+ }
+ }
+ try {
+ Thread.sleep(100);
+ } catch (InterruptedException ie) {
+ return null;
+ }
+ } while (!stop);
+ return null;
+ }
+ }
+}
