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/*
* 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.search;
import org.elasticsearch.Version;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilter;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.TransportAction;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.Randomness;
import org.elasticsearch.common.UUIDs;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.tasks.TaskManager;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import java.util.Arrays;
import java.util.Collections;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.nullValue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class TransportMultiSearchActionTests extends ESTestCase {
public void testBatchExecute() throws Exception {
// Initialize dependencies of TransportMultiSearchAction
Settings settings = Settings.builder()
.put("node.name", TransportMultiSearchActionTests.class.getSimpleName())
.build();
ActionFilters actionFilters = mock(ActionFilters.class);
when(actionFilters.filters()).thenReturn(new ActionFilter[0]);
ThreadPool threadPool = new ThreadPool(settings);
TaskManager taskManager = mock(TaskManager.class);
TransportService transportService = new TransportService(Settings.EMPTY, null, null, TransportService.NOOP_TRANSPORT_INTERCEPTOR,
boundAddress -> DiscoveryNode.createLocal(settings, boundAddress.publishAddress(), UUIDs.randomBase64UUID()), null) {
@Override
public TaskManager getTaskManager() {
return taskManager;
}
};
ClusterService clusterService = mock(ClusterService.class);
when(clusterService.state()).thenReturn(ClusterState.builder(new ClusterName("test")).build());
IndexNameExpressionResolver resolver = new IndexNameExpressionResolver(Settings.EMPTY);
// Keep track of the number of concurrent searches started by multi search api,
// and if there are more searches than is allowed create an error and remember that.
int maxAllowedConcurrentSearches = scaledRandomIntBetween(1, 16);
AtomicInteger counter = new AtomicInteger();
AtomicReference<AssertionError> errorHolder = new AtomicReference<>();
// randomize whether or not requests are executed asynchronously
final List<String> threadPoolNames = Arrays.asList(ThreadPool.Names.GENERIC, ThreadPool.Names.SAME);
Randomness.shuffle(threadPoolNames);
final ExecutorService commonExecutor = threadPool.executor(threadPoolNames.get(0));
final ExecutorService rarelyExecutor = threadPool.executor(threadPoolNames.get(1));
final Set<SearchRequest> requests = Collections.newSetFromMap(Collections.synchronizedMap(new IdentityHashMap<>()));
TransportAction<SearchRequest, SearchResponse> searchAction = new TransportAction<SearchRequest, SearchResponse>
(Settings.EMPTY, "action", threadPool, actionFilters, resolver, taskManager) {
@Override
protected void doExecute(SearchRequest request, ActionListener<SearchResponse> listener) {
requests.add(request);
int currentConcurrentSearches = counter.incrementAndGet();
if (currentConcurrentSearches > maxAllowedConcurrentSearches) {
errorHolder.set(new AssertionError("Current concurrent search [" + currentConcurrentSearches +
"] is higher than is allowed [" + maxAllowedConcurrentSearches + "]"));
}
final ExecutorService executorService = rarely() ? rarelyExecutor : commonExecutor;
executorService.execute(() -> {
counter.decrementAndGet();
listener.onResponse(new SearchResponse());
});
}
};
TransportMultiSearchAction action =
new TransportMultiSearchAction(threadPool, actionFilters, transportService, clusterService, searchAction, resolver, 10);
// Execute the multi search api and fail if we find an error after executing:
try {
/*
* Allow for a large number of search requests in a single batch as previous implementations could stack overflow if the number
* of requests in a single batch was large
*/
int numSearchRequests = scaledRandomIntBetween(1, 8192);
MultiSearchRequest multiSearchRequest = new MultiSearchRequest();
multiSearchRequest.maxConcurrentSearchRequests(maxAllowedConcurrentSearches);
for (int i = 0; i < numSearchRequests; i++) {
multiSearchRequest.add(new SearchRequest());
}
MultiSearchResponse response = action.execute(multiSearchRequest).actionGet();
assertThat(response.getResponses().length, equalTo(numSearchRequests));
assertThat(requests.size(), equalTo(numSearchRequests));
assertThat(errorHolder.get(), nullValue());
} finally {
assertTrue(ESTestCase.terminate(threadPool));
}
}
public void testDefaultMaxConcurrentSearches() {
int numDataNodes = randomIntBetween(1, 10);
DiscoveryNodes.Builder builder = DiscoveryNodes.builder();
for (int i = 0; i < numDataNodes; i++) {
builder.add(new DiscoveryNode("_id" + i, buildNewFakeTransportAddress(), Collections.emptyMap(),
Collections.singleton(DiscoveryNode.Role.DATA), Version.CURRENT));
}
builder.add(new DiscoveryNode("master", buildNewFakeTransportAddress(), Collections.emptyMap(),
Collections.singleton(DiscoveryNode.Role.MASTER), Version.CURRENT));
builder.add(new DiscoveryNode("ingest", buildNewFakeTransportAddress(), Collections.emptyMap(),
Collections.singleton(DiscoveryNode.Role.INGEST), Version.CURRENT));
ClusterState state = ClusterState.builder(new ClusterName("_name")).nodes(builder).build();
int result = TransportMultiSearchAction.defaultMaxConcurrentSearches(10, state);
assertThat(result, equalTo(10 * numDataNodes));
state = ClusterState.builder(new ClusterName("_name")).build();
result = TransportMultiSearchAction.defaultMaxConcurrentSearches(10, state);
assertThat(result, equalTo(1));
}
}
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