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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.admin.indices.flush;
import com.carrotsearch.hppc.ObjectIntHashMap;
import com.carrotsearch.hppc.ObjectIntMap;
import org.elasticsearch.action.admin.indices.flush.SyncedFlushResponse.ShardCounts;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.ShardRoutingState;
import org.elasticsearch.cluster.routing.TestShardRouting;
import org.elasticsearch.common.io.stream.BytesStreamOutput;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.indices.flush.ShardsSyncedFlushResult;
import org.elasticsearch.indices.flush.SyncedFlushService;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.test.ESTestCase;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.elasticsearch.test.XContentTestUtils.convertToMap;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.hasSize;
public class SyncedFlushUnitTests extends ESTestCase {
private static class TestPlan {
public SyncedFlushResponse.ShardCounts totalCounts;
public Map<String, SyncedFlushResponse.ShardCounts> countsPerIndex = new HashMap<>();
public ObjectIntMap<String> expectedFailuresPerIndex = new ObjectIntHashMap<>();
public SyncedFlushResponse result;
}
public void testIndicesSyncedFlushResult() throws IOException {
final TestPlan testPlan = createTestPlan();
assertThat(testPlan.result.totalShards(), equalTo(testPlan.totalCounts.total));
assertThat(testPlan.result.successfulShards(), equalTo(testPlan.totalCounts.successful));
assertThat(testPlan.result.failedShards(), equalTo(testPlan.totalCounts.failed));
assertThat(testPlan.result.restStatus(), equalTo(testPlan.totalCounts.failed > 0 ? RestStatus.CONFLICT : RestStatus.OK));
Map<String, Object> asMap = convertToMap(testPlan.result);
assertShardCount("_shards header", (Map<String, Object>) asMap.get("_shards"), testPlan.totalCounts);
assertThat("unexpected number of indices", asMap.size(), equalTo(1 + testPlan.countsPerIndex.size())); // +1 for the shards header
for (String index : testPlan.countsPerIndex.keySet()) {
Map<String, Object> indexMap = (Map<String, Object>) asMap.get(index);
assertShardCount(index, indexMap, testPlan.countsPerIndex.get(index));
List<Map<String, Object>> failureList = (List<Map<String, Object>>) indexMap.get("failures");
final int expectedFailures = testPlan.expectedFailuresPerIndex.get(index);
if (expectedFailures == 0) {
assertNull(index + " has unexpected failures", failureList);
} else {
assertNotNull(index + " should have failures", failureList);
assertThat(failureList, hasSize(expectedFailures));
}
}
}
public void testResponseStreaming() throws IOException {
final TestPlan testPlan = createTestPlan();
assertThat(testPlan.result.totalShards(), equalTo(testPlan.totalCounts.total));
assertThat(testPlan.result.successfulShards(), equalTo(testPlan.totalCounts.successful));
assertThat(testPlan.result.failedShards(), equalTo(testPlan.totalCounts.failed));
assertThat(testPlan.result.restStatus(), equalTo(testPlan.totalCounts.failed > 0 ? RestStatus.CONFLICT : RestStatus.OK));
BytesStreamOutput out = new BytesStreamOutput();
testPlan.result.writeTo(out);
StreamInput in = StreamInput.wrap(out.bytes());
SyncedFlushResponse readResponse = new SyncedFlushResponse();
readResponse.readFrom(in);
assertThat(readResponse.totalShards(), equalTo(testPlan.totalCounts.total));
assertThat(readResponse.successfulShards(), equalTo(testPlan.totalCounts.successful));
assertThat(readResponse.failedShards(), equalTo(testPlan.totalCounts.failed));
assertThat(readResponse.restStatus(), equalTo(testPlan.totalCounts.failed > 0 ? RestStatus.CONFLICT : RestStatus.OK));
assertThat(readResponse.shardsResultPerIndex.size(), equalTo(testPlan.result.getShardsResultPerIndex().size()));
for (Map.Entry<String, List<ShardsSyncedFlushResult>> entry : readResponse.getShardsResultPerIndex().entrySet()) {
List<ShardsSyncedFlushResult> originalShardsResults = testPlan.result.getShardsResultPerIndex().get(entry.getKey());
assertNotNull(originalShardsResults);
List<ShardsSyncedFlushResult> readShardsResults = entry.getValue();
assertThat(readShardsResults.size(), equalTo(originalShardsResults.size()));
for (int i = 0; i < readShardsResults.size(); i++) {
ShardsSyncedFlushResult originalShardResult = originalShardsResults.get(i);
ShardsSyncedFlushResult readShardResult = readShardsResults.get(i);
assertThat(originalShardResult.failureReason(), equalTo(readShardResult.failureReason()));
assertThat(originalShardResult.failed(), equalTo(readShardResult.failed()));
assertThat(originalShardResult.getShardId(), equalTo(readShardResult.getShardId()));
assertThat(originalShardResult.successfulShards(), equalTo(readShardResult.successfulShards()));
assertThat(originalShardResult.syncId(), equalTo(readShardResult.syncId()));
assertThat(originalShardResult.totalShards(), equalTo(readShardResult.totalShards()));
assertThat(originalShardResult.failedShards().size(), equalTo(readShardResult.failedShards().size()));
for (Map.Entry<ShardRouting, SyncedFlushService.ShardSyncedFlushResponse> shardEntry : originalShardResult.failedShards().entrySet()) {
SyncedFlushService.ShardSyncedFlushResponse readShardResponse = readShardResult.failedShards().get(shardEntry.getKey());
assertNotNull(readShardResponse);
SyncedFlushService.ShardSyncedFlushResponse originalShardResponse = shardEntry.getValue();
assertThat(originalShardResponse.failureReason(), equalTo(readShardResponse.failureReason()));
assertThat(originalShardResponse.success(), equalTo(readShardResponse.success()));
}
assertThat(originalShardResult.shardResponses().size(), equalTo(readShardResult.shardResponses().size()));
for (Map.Entry<ShardRouting, SyncedFlushService.ShardSyncedFlushResponse> shardEntry : originalShardResult.shardResponses().entrySet()) {
SyncedFlushService.ShardSyncedFlushResponse readShardResponse = readShardResult.shardResponses().get(shardEntry.getKey());
assertNotNull(readShardResponse);
SyncedFlushService.ShardSyncedFlushResponse originalShardResponse = shardEntry.getValue();
assertThat(originalShardResponse.failureReason(), equalTo(readShardResponse.failureReason()));
assertThat(originalShardResponse.success(), equalTo(readShardResponse.success()));
}
}
}
}
private void assertShardCount(String name, Map<String, Object> header, ShardCounts expectedCounts) {
assertThat(name + " has unexpected total count", (Integer) header.get("total"), equalTo(expectedCounts.total));
assertThat(name + " has unexpected successful count", (Integer) header.get("successful"), equalTo(expectedCounts.successful));
assertThat(name + " has unexpected failed count", (Integer) header.get("failed"), equalTo(expectedCounts.failed));
}
protected TestPlan createTestPlan() {
final TestPlan testPlan = new TestPlan();
final Map<String, List<ShardsSyncedFlushResult>> indicesResults = new HashMap<>();
final int indexCount = randomIntBetween(1, 10);
int totalShards = 0;
int totalSuccesful = 0;
int totalFailed = 0;
for (int i = 0; i < indexCount; i++) {
final String index = "index_" + i;
int shards = randomIntBetween(1, 4);
int replicas = randomIntBetween(0, 2);
int successful = 0;
int failed = 0;
int failures = 0;
List<ShardsSyncedFlushResult> shardsResults = new ArrayList<>();
for (int shard = 0; shard < shards; shard++) {
final ShardId shardId = new ShardId(index, "_na_", shard);
if (randomInt(5) < 2) {
// total shard failure
failed += replicas + 1;
failures++;
shardsResults.add(new ShardsSyncedFlushResult(shardId, replicas + 1, "simulated total failure"));
} else {
Map<ShardRouting, SyncedFlushService.ShardSyncedFlushResponse> shardResponses = new HashMap<>();
for (int copy = 0; copy < replicas + 1; copy++) {
final ShardRouting shardRouting = TestShardRouting.newShardRouting(index, shard, "node_" + shardId + "_" + copy, null,
copy == 0, ShardRoutingState.STARTED, 0);
if (randomInt(5) < 2) {
// shard copy failure
failed++;
failures++;
shardResponses.put(shardRouting, new SyncedFlushService.ShardSyncedFlushResponse("copy failure " + shardId));
} else {
successful++;
shardResponses.put(shardRouting, new SyncedFlushService.ShardSyncedFlushResponse());
}
}
shardsResults.add(new ShardsSyncedFlushResult(shardId, "_sync_id_" + shard, replicas + 1, shardResponses));
}
}
indicesResults.put(index, shardsResults);
testPlan.countsPerIndex.put(index, new SyncedFlushResponse.ShardCounts(shards * (replicas + 1), successful, failed));
testPlan.expectedFailuresPerIndex.put(index, failures);
totalFailed += failed;
totalShards += shards * (replicas + 1);
totalSuccesful += successful;
}
testPlan.result = new SyncedFlushResponse(indicesResults);
testPlan.totalCounts = new SyncedFlushResponse.ShardCounts(totalShards, totalSuccesful, totalFailed);
return testPlan;
}
}
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