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Dump stack traces of all threads on test failure due to AssertionError
Closes #12425
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63 changes: 63 additions & 0 deletions
63
core/src/test/java/org/elasticsearch/test/StackTraces.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch 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.elasticsearch.test; | ||
|
|
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| import java.util.Formatter; | ||
| import java.util.Locale; | ||
| import java.util.Map; | ||
|
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| public class StackTraces { | ||
| /** Dump threads and their current stack trace. */ | ||
| public static String formatThreadStacks(Map<Thread, StackTraceElement[]> threads) { | ||
| StringBuilder message = new StringBuilder(); | ||
| int cnt = 1; | ||
| final Formatter f = new Formatter(message, Locale.ENGLISH); | ||
| for (Map.Entry<Thread, StackTraceElement[]> e : threads.entrySet()) { | ||
| if (e.getKey().isAlive()) { | ||
| f.format(Locale.ENGLISH, "\n %2d) %s", cnt++, threadName(e.getKey())).flush(); | ||
| } | ||
| if (e.getValue().length == 0) { | ||
| message.append("\n at (empty stack)"); | ||
| } else { | ||
| for (StackTraceElement ste : e.getValue()) { | ||
| message.append("\n at ").append(ste); | ||
| } | ||
| } | ||
| } | ||
| return message.toString(); | ||
| } | ||
|
|
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| private static String groupName(ThreadGroup threadGroup) { | ||
| if (threadGroup == null) { | ||
| return "{null group}"; | ||
| } else { | ||
| return threadGroup.getName(); | ||
| } | ||
| } | ||
|
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| private static String threadName(Thread t) { | ||
| return "Thread[" + | ||
| "id=" + t.getId() + | ||
| ", name=" + t.getName() + | ||
| ", state=" + t.getState() + | ||
| ", group=" + groupName(t.getThreadGroup()) + | ||
| "]"; | ||
| } | ||
| } |
37 changes: 37 additions & 0 deletions
37
...src/test/java/org/elasticsearch/test/junit/listeners/AssertionErrorThreadDumpPrinter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| /* | ||
| * Licensed to Elasticsearch under one or more contributor | ||
| * license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright | ||
| * ownership. Elasticsearch 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. | ||
| */ | ||
|
|
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| package org.elasticsearch.test.junit.listeners; | ||
|
|
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| import org.elasticsearch.test.StackTraces; | ||
| import org.junit.runner.notification.Failure; | ||
| import org.junit.runner.notification.RunListener; | ||
|
|
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| import java.util.Map; | ||
|
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| public class AssertionErrorThreadDumpPrinter extends RunListener { | ||
| @Override | ||
| public void testFailure(Failure failure) throws Exception { | ||
| if (failure.getException() instanceof AssertionError) { | ||
| Map<Thread, StackTraceElement[]> allStackTraces = Thread.getAllStackTraces(); | ||
| String threadStacks = StackTraces.formatThreadStacks(allStackTraces); | ||
| System.err.println(threadStacks); | ||
| } | ||
| } | ||
| } |