Reuse ConnectionSource to avoid extra server selection. #1813
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| /* | ||
| * Copyright 2008-present MongoDB, Inc. | ||
| * | ||
| * Licensed 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 com.mongodb.reactivestreams.client; | ||
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| import com.mongodb.MongoClientSettings; | ||
| import com.mongodb.client.AbstractChangeSteamFunctionalTest; | ||
| import com.mongodb.client.MongoClient; | ||
| import com.mongodb.reactivestreams.client.syncadapter.SyncMongoClient; | ||
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| public class ChangeStreamFunctionalTest extends AbstractChangeSteamFunctionalTest { | ||
| @Override | ||
| protected MongoClient createMongoClient(final MongoClientSettings mongoClientSettings) { | ||
| return new SyncMongoClient(mongoClientSettings); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| /* | ||
| * Copyright 2008-present MongoDB, Inc. | ||
| * | ||
| * Licensed 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 com.mongodb.client; | ||
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|
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| import com.mongodb.ClusterFixture; | ||
| import com.mongodb.MongoClientSettings; | ||
| import com.mongodb.MongoNamespace; | ||
| import com.mongodb.client.model.changestream.ChangeStreamDocument; | ||
| import com.mongodb.client.test.CollectionHelper; | ||
| import org.bson.BsonDocument; | ||
| import org.bson.BsonTimestamp; | ||
| import org.bson.Document; | ||
| import org.bson.codecs.BsonDocumentCodec; | ||
| import org.junit.jupiter.api.AfterEach; | ||
| import org.junit.jupiter.api.Test; | ||
|
|
||
| import java.time.Instant; | ||
| import java.util.concurrent.atomic.AtomicInteger; | ||
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| import static com.mongodb.client.Fixture.getDefaultDatabaseName; | ||
| import static java.lang.String.format; | ||
| import static org.junit.jupiter.api.Assertions.assertEquals; | ||
| import static org.junit.jupiter.api.Assertions.assertNotNull; | ||
| import static org.junit.jupiter.api.Assumptions.assumeTrue; | ||
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|
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| /** | ||
| * The {@link ChangeStreamProseTest}, which is defined only for sync driver, should be migrated to this class. | ||
| * Once this done, this class should be renamed to ChangeStreamProseTest. | ||
| */ | ||
| public abstract class AbstractChangeSteamFunctionalTest { | ||
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|
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| private static final String FAIL_COMMAND_NAME = "failCommand"; | ||
| private static final MongoNamespace NAMESPACE = new MongoNamespace(getDefaultDatabaseName(), "test"); | ||
| private final CollectionHelper<BsonDocument> collectionHelper = new CollectionHelper<>(new BsonDocumentCodec(), NAMESPACE); | ||
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| protected abstract MongoClient createMongoClient(MongoClientSettings mongoClientSettings); | ||
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| @Test | ||
| public void shouldDoOneServerSelectionForResumeAttempt() { | ||
|
Member
There was a problem hiding this comment. Seems to have failed a couple of times in the tests: |
||
| //given | ||
| assumeTrue(ClusterFixture.isDiscoverableReplicaSet()); | ||
| AtomicInteger serverSelectionCounter = new AtomicInteger(); | ||
| BsonTimestamp startTime = new BsonTimestamp((int) Instant.now().getEpochSecond(), 0); | ||
| try (MongoClient mongoClient = createMongoClient(Fixture.getMongoClientSettingsBuilder() | ||
| .applyToClusterSettings(builder -> builder.serverSelector(clusterDescription -> { | ||
| serverSelectionCounter.incrementAndGet(); | ||
| return clusterDescription.getServerDescriptions(); | ||
| })).build())) { | ||
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| MongoCollection<Document> collection = mongoClient | ||
| .getDatabase(NAMESPACE.getDatabaseName()) | ||
| .getCollection(NAMESPACE.getCollectionName()); | ||
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| collectionHelper.runAdminCommand("{" | ||
| + " configureFailPoint: \"" + FAIL_COMMAND_NAME + "\"," | ||
| + " mode: {" | ||
| + " times: 1" | ||
| + " }," | ||
| + " data: {" | ||
| + " failCommands: ['getMore']," | ||
| + " errorCode: 10107," | ||
| + " errorLabels: ['ResumableChangeStreamError']" | ||
| + " }" | ||
| + "}"); | ||
| // We insert document here, because async cursor performs aggregate and getMore right after we call cursor() | ||
| collection.insertOne(Document.parse("{ x: 1 }")); | ||
| serverSelectionCounter.set(0); | ||
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| try (MongoChangeStreamCursor<ChangeStreamDocument<Document>> cursor = collection.watch() | ||
| .batchSize(0) | ||
| .startAtOperationTime(startTime) | ||
| .cursor()) { | ||
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| //when | ||
| ChangeStreamDocument<Document> changeStreamDocument = cursor.next(); | ||
| //then | ||
| assertNotNull(changeStreamDocument); | ||
| int actualCountOfServerSelections = serverSelectionCounter.get(); | ||
| assertEquals(2, actualCountOfServerSelections, | ||
| format("Expected 2 server selections (initial aggregate command + resume attempt aggregate command), but there were %s", | ||
| actualCountOfServerSelections)); | ||
| } | ||
| } | ||
| } | ||
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| @AfterEach | ||
| public void tearDown() throws InterruptedException { | ||
| ClusterFixture.disableFailPoint(FAIL_COMMAND_NAME); | ||
| collectionHelper.drop(); | ||
| } | ||
| } | ||
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