/*
* 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.action.support;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.ThreadContext;
import org.elasticsearch.test.ESTestCase;
import java.io.IOException;
public class ContextPreservingActionListenerTests extends ESTestCase {
public void testOriginalContextIsPreservedAfterOnResponse() throws IOException {
try (ThreadContext threadContext = new ThreadContext(Settings.EMPTY)) {
final boolean nonEmptyContext = randomBoolean();
if (nonEmptyContext) {
threadContext.putHeader("not empty", "value");
}
final ContextPreservingActionListener<Void> actionListener;
try (ThreadContext.StoredContext ignore = threadContext.stashContext()) {
threadContext.putHeader("foo", "bar");
final ActionListener<Void> delegate = new ActionListener<Void>() {
@Override
public void onResponse(Void aVoid) {
assertEquals("bar", threadContext.getHeader("foo"));
assertNull(threadContext.getHeader("not empty"));
}
@Override
public void onFailure(Exception e) {
throw new RuntimeException("onFailure shouldn't be called", e);
}
};
if (randomBoolean()) {
actionListener = new ContextPreservingActionListener<>(threadContext.newRestorableContext(true), delegate);
} else {
actionListener = ContextPreservingActionListener.wrapPreservingContext(delegate, threadContext);
}
}
assertNull(threadContext.getHeader("foo"));
assertEquals(nonEmptyContext ? "value" : null, threadContext.getHeader("not empty"));
actionListener.onResponse(null);
assertNull(threadContext.getHeader("foo"));
assertEquals(nonEmptyContext ? "value" : null, threadContext.getHeader("not empty"));
}
}
public void testOriginalContextIsPreservedAfterOnFailure() throws Exception {
try (ThreadContext threadContext = new ThreadContext(Settings.EMPTY)) {
final boolean nonEmptyContext = randomBoolean();
if (nonEmptyContext) {
threadContext.putHeader("not empty", "value");
}
final ContextPreservingActionListener<Void> actionListener;
try (ThreadContext.StoredContext ignore = threadContext.stashContext()) {
threadContext.putHeader("foo", "bar");
final ActionListener<Void> delegate = new ActionListener<Void>() {
@Override
public void onResponse(Void aVoid) {
throw new RuntimeException("onResponse shouldn't be called");
}
@Override
public void onFailure(Exception e) {
assertEquals("bar", threadContext.getHeader("foo"));
assertNull(threadContext.getHeader("not empty"));
}
};
if (randomBoolean()) {
actionListener = new ContextPreservingActionListener<>(threadContext.newRestorableContext(true), delegate);
} else {
actionListener = ContextPreservingActionListener.wrapPreservingContext(delegate, threadContext);
}
}
assertNull(threadContext.getHeader("foo"));
assertEquals(nonEmptyContext ? "value" : null, threadContext.getHeader("not empty"));
actionListener.onFailure(null);
assertNull(threadContext.getHeader("foo"));
assertEquals(nonEmptyContext ? "value" : null, threadContext.getHeader("not empty"));
}
}
public void testOriginalContextIsWhenListenerThrows() throws Exception {
try (ThreadContext threadContext = new ThreadContext(Settings.EMPTY)) {
final boolean nonEmptyContext = randomBoolean();
if (nonEmptyContext) {
threadContext.putHeader("not empty", "value");
}
final ContextPreservingActionListener<Void> actionListener;
try (ThreadContext.StoredContext ignore = threadContext.stashContext()) {
threadContext.putHeader("foo", "bar");
final ActionListener<Void> delegate = new ActionListener<Void>() {
@Override
public void onResponse(Void aVoid) {
assertEquals("bar", threadContext.getHeader("foo"));
assertNull(threadContext.getHeader("not empty"));
throw new RuntimeException("onResponse called");
}
@Override
public void onFailure(Exception e) {
assertEquals("bar", threadContext.getHeader("foo"));
assertNull(threadContext.getHeader("not empty"));
throw new RuntimeException("onFailure called");
}
};
if (randomBoolean()) {
actionListener = new ContextPreservingActionListener<>(threadContext.newRestorableContext(true), delegate);
} else {
actionListener = ContextPreservingActionListener.wrapPreservingContext(delegate, threadContext);
}
}
assertNull(threadContext.getHeader("foo"));
assertEquals(nonEmptyContext ? "value" : null, threadContext.getHeader("not empty"));
RuntimeException e = expectThrows(RuntimeException.class, () -> actionListener.onResponse(null));
assertEquals("onResponse called", e.getMessage());
assertNull(threadContext.getHeader("foo"));
assertEquals(nonEmptyContext ? "value" : null, threadContext.getHeader("not empty"));
e = expectThrows(RuntimeException.class, () -> actionListener.onFailure(null));
assertEquals("onFailure called", e.getMessage());
assertNull(threadContext.getHeader("foo"));
assertEquals(nonEmptyContext ? "value" : null, threadContext.getHeader("not empty"));
}
}
}