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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.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.routing.GroupShardsIterator;
import org.elasticsearch.cluster.routing.PlainShardIterator;
import org.elasticsearch.cluster.routing.RecoverySource;
import org.elasticsearch.cluster.routing.ShardIterator;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.UnassignedInfo;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.search.SearchPhaseResult;
import org.elasticsearch.search.SearchShardTarget;
import org.elasticsearch.search.internal.AliasFilter;
import org.elasticsearch.search.internal.ShardSearchTransportRequest;
import org.elasticsearch.test.ESTestCase;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
public class SearchAsyncActionTests extends ESTestCase {
public void testFanOutAndCollect() throws InterruptedException {
SearchRequest request = new SearchRequest();
CountDownLatch latch = new CountDownLatch(1);
AtomicReference<TestSearchResponse> response = new AtomicReference<>();
ActionListener<SearchResponse> responseListener = new ActionListener<SearchResponse>() {
@Override
public void onResponse(SearchResponse searchResponse) {
response.set((TestSearchResponse) searchResponse);
}
@Override
public void onFailure(Exception e) {
logger.warn("test failed", e);
fail(e.getMessage());
}
};
DiscoveryNode primaryNode = new DiscoveryNode("node_1", buildNewFakeTransportAddress(), Version.CURRENT);
DiscoveryNode replicaNode = new DiscoveryNode("node_2", buildNewFakeTransportAddress(), Version.CURRENT);
Map<DiscoveryNode, Set<Long>> nodeToContextMap = new HashMap<>();
AtomicInteger contextIdGenerator = new AtomicInteger(0);
GroupShardsIterator shardsIter = getShardsIter("idx", randomIntBetween(1, 10), randomBoolean(), primaryNode, replicaNode);
AtomicInteger numFreedContext = new AtomicInteger();
SearchTransportService transportService = new SearchTransportService(Settings.EMPTY, null) {
@Override
public void sendFreeContext(DiscoveryNode node, long contextId, SearchRequest request) {
numFreedContext.incrementAndGet();
assertTrue(nodeToContextMap.containsKey(node));
assertTrue(nodeToContextMap.get(node).remove(contextId));
}
};
Map<String, DiscoveryNode> lookup = new HashMap<>();
lookup.put(primaryNode.getId(), primaryNode);
Map<String, AliasFilter> aliasFilters = Collections.singletonMap("_na_", new AliasFilter(null, Strings.EMPTY_ARRAY));
AbstractSearchAsyncAction asyncAction = new AbstractSearchAsyncAction<TestSearchPhaseResult>(logger, transportService, lookup::get,
aliasFilters, Collections.emptyMap(), null, request, responseListener, shardsIter, 0, 0, null) {
TestSearchResponse response = new TestSearchResponse();
@Override
protected void sendExecuteFirstPhase(DiscoveryNode node, ShardSearchTransportRequest request, ActionListener listener) {
assertTrue("shard: " + request.shardId() + " has been queried twice", response.queried.add(request.shardId()));
TestSearchPhaseResult testSearchPhaseResult = new TestSearchPhaseResult(contextIdGenerator.incrementAndGet(), node);
Set<Long> ids = nodeToContextMap.computeIfAbsent(node, (n) -> new HashSet<>());
ids.add(testSearchPhaseResult.id);
if (randomBoolean()) {
listener.onResponse(testSearchPhaseResult);
} else {
new Thread(() -> listener.onResponse(testSearchPhaseResult)).start();
}
}
@Override
protected void moveToSecondPhase() throws Exception {
for (int i = 0; i < firstResults.length(); i++) {
TestSearchPhaseResult result = firstResults.get(i);
assertEquals(result.node.getId(), result.shardTarget().getNodeId());
sendReleaseSearchContext(result.id(), result.node);
}
responseListener.onResponse(response);
latch.countDown();
}
@Override
protected String firstPhaseName() {
return "test";
}
@Override
protected Executor getExecutor() {
fail("no executor in this class");
return null;
}
};
asyncAction.start();
latch.await();
assertNotNull(response.get());
assertFalse(nodeToContextMap.isEmpty());
assertTrue(nodeToContextMap.containsKey(primaryNode));
assertEquals(shardsIter.size(), numFreedContext.get());
assertTrue(nodeToContextMap.get(primaryNode).toString(), nodeToContextMap.get(primaryNode).isEmpty());
}
private GroupShardsIterator getShardsIter(String index, int numShards, boolean doReplicas, DiscoveryNode primaryNode,
DiscoveryNode replicaNode) {
ArrayList<ShardIterator> list = new ArrayList<>();
for (int i = 0; i < numShards; i++) {
ArrayList<ShardRouting> started = new ArrayList<>();
ArrayList<ShardRouting> initializing = new ArrayList<>();
ArrayList<ShardRouting> unassigned = new ArrayList<>();
ShardRouting routing = ShardRouting.newUnassigned(new ShardId(new Index(index, "_na_"), i), true,
RecoverySource.StoreRecoverySource.EMPTY_STORE_INSTANCE, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foobar"));
routing = routing.initialize(primaryNode.getId(), i + "p", 0);
routing.started();
started.add(routing);
if (doReplicas) {
routing = ShardRouting.newUnassigned(new ShardId(new Index(index, "_na_"), i), false,
RecoverySource.PeerRecoverySource.INSTANCE, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foobar"));
if (replicaNode != null) {
routing = routing.initialize(replicaNode.getId(), i + "r", 0);
if (randomBoolean()) {
routing.started();
started.add(routing);
} else {
initializing.add(routing);
}
} else {
unassigned.add(routing); // unused yet
}
}
Collections.shuffle(started, random());
started.addAll(initializing);
list.add(new PlainShardIterator(new ShardId(new Index(index, "_na_"), i), started));
}
return new GroupShardsIterator(list);
}
public static class TestSearchResponse extends SearchResponse {
public final Set<ShardId> queried = new HashSet<>();
}
public static class TestSearchPhaseResult implements SearchPhaseResult {
final long id;
final DiscoveryNode node;
SearchShardTarget shardTarget;
public TestSearchPhaseResult(long id, DiscoveryNode node) {
this.id = id;
this.node = node;
}
@Override
public long id() {
return id;
}
@Override
public SearchShardTarget shardTarget() {
return this.shardTarget;
}
@Override
public void shardTarget(SearchShardTarget shardTarget) {
this.shardTarget = shardTarget;
}
@Override
public void readFrom(StreamInput in) throws IOException {
}
@Override
public void writeTo(StreamOutput out) throws IOException {
}
}
}
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