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AggregateIterableSpecification.groovy
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AggregateIterableSpecification.groovy
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/*
* 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.internal
import com.mongodb.Function
import com.mongodb.MongoException
import com.mongodb.MongoNamespace
import com.mongodb.ReadConcern
import com.mongodb.WriteConcern
import com.mongodb.client.ClientSession
import com.mongodb.client.model.Collation
import com.mongodb.internal.client.model.AggregationLevel
import com.mongodb.internal.operation.AggregateOperation
import com.mongodb.internal.operation.AggregateToCollectionOperation
import com.mongodb.internal.operation.BatchCursor
import com.mongodb.internal.operation.FindOperation
import org.bson.BsonDocument
import org.bson.BsonInt32
import org.bson.BsonString
import org.bson.Document
import org.bson.codecs.BsonValueCodecProvider
import org.bson.codecs.DocumentCodec
import org.bson.codecs.DocumentCodecProvider
import org.bson.codecs.ValueCodecProvider
import org.bson.codecs.configuration.CodecConfigurationException
import spock.lang.Specification
import java.util.function.Consumer
import static com.mongodb.CustomMatchers.isTheSameAs
import static com.mongodb.ReadPreference.secondary
import static java.util.concurrent.TimeUnit.MILLISECONDS
import static org.bson.codecs.configuration.CodecRegistries.fromProviders
import static spock.util.matcher.HamcrestSupport.expect
class AggregateIterableSpecification extends Specification {
def namespace = new MongoNamespace('db', 'coll')
def codecRegistry = fromProviders([new ValueCodecProvider(), new DocumentCodecProvider(), new BsonValueCodecProvider()])
def readPreference = secondary()
def readConcern = ReadConcern.MAJORITY
def writeConcern = WriteConcern.MAJORITY
def collation = Collation.builder().locale('en').build()
def 'should build the expected AggregationOperation'() {
given:
def executor = new TestOperationExecutor([null, null, null, null, null]);
def pipeline = [new Document('$match', 1)]
def aggregationIterable = new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, executor, pipeline, AggregationLevel.COLLECTION,
true)
when: 'default input should be as expected'
aggregationIterable.iterator()
def operation = executor.getReadOperation() as AggregateOperation<Document>
def readPreference = executor.getReadPreference()
then:
expect operation, isTheSameAs(new AggregateOperation<Document>(namespace,
[new BsonDocument('$match', new BsonInt32(1))], new DocumentCodec())
.retryReads(true))
readPreference == secondary()
when: 'overriding initial options'
aggregationIterable
.maxAwaitTime(99, MILLISECONDS)
.maxTime(999, MILLISECONDS)
.collation(collation)
.hint(new Document('a', 1))
.comment('this is a comment')
.iterator()
operation = executor.getReadOperation() as AggregateOperation<Document>
then: 'should use the overrides'
expect operation, isTheSameAs(new AggregateOperation<Document>(namespace,
[new BsonDocument('$match', new BsonInt32(1))], new DocumentCodec())
.retryReads(true)
.collation(collation)
.hint(new BsonDocument('a', new BsonInt32(1)))
.comment('this is a comment')
.maxAwaitTime(99, MILLISECONDS)
.maxTime(999, MILLISECONDS))
}
def 'should build the expected AggregateToCollectionOperation for $out'() {
given:
def executor = new TestOperationExecutor([null, null, null, null, null])
def collectionName = 'collectionName'
def collectionNamespace = new MongoNamespace(namespace.getDatabaseName(), collectionName)
def pipeline = [new Document('$match', 1), new Document('$out', collectionName)]
when: 'aggregation includes $out'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipeline, AggregationLevel.COLLECTION, false)
.batchSize(99)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new Document('a', 1))
.comment('this is a comment').iterator()
def operation = executor.getWriteOperation() as AggregateToCollectionOperation
then: 'should use the overrides'
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)), new BsonDocument('$out', new BsonString(collectionName))],
readConcern, writeConcern, AggregationLevel.COLLECTION)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new BsonDocument('a', new BsonInt32(1)))
.comment('this is a comment')
)
when: 'the subsequent read should have the batchSize set'
operation = executor.getReadOperation() as FindOperation<Document>
then: 'should use the correct settings'
operation.getNamespace() == collectionNamespace
operation.getBatchSize() == 99
operation.getCollation() == collation
operation.getMaxAwaitTime(MILLISECONDS) == 0
operation.getMaxTime(MILLISECONDS) == 0
when: 'aggregation includes $out and is at the database level'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipeline, AggregationLevel.DATABASE, false)
.batchSize(99)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new Document('a', 1))
.comment('this is a comment').iterator()
operation = executor.getWriteOperation() as AggregateToCollectionOperation
then: 'should use the overrides'
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)), new BsonDocument('$out', new BsonString(collectionName))],
readConcern, writeConcern,
AggregationLevel.DATABASE)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new BsonDocument('a', new BsonInt32(1)))
.comment('this is a comment')
)
when: 'the subsequent read should have the batchSize set'
operation = executor.getReadOperation() as FindOperation<Document>
then: 'should use the correct settings'
operation.getNamespace() == collectionNamespace
operation.getBatchSize() == 99
operation.getCollation() == collation
operation.getMaxAwaitTime(MILLISECONDS) == 0
operation.getMaxTime(MILLISECONDS) == 0
operation.isAllowDiskUse() == null
when: 'toCollection should work as expected'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipeline, AggregationLevel.COLLECTION, false)
.allowDiskUse(true)
.collation(collation)
.hint(new Document('a', 1))
.comment('this is a comment')
.toCollection()
operation = executor.getWriteOperation() as AggregateToCollectionOperation
then:
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)), new BsonDocument('$out', new BsonString(collectionName))],
readConcern, writeConcern)
.allowDiskUse(true)
.collation(collation)
.hint(new BsonDocument('a', new BsonInt32(1)))
.comment('this is a comment'))
}
def 'should build the expected AggregateToCollectionOperation for $merge document'() {
given:
def executor = new TestOperationExecutor([null, null, null, null, null, null, null])
def collectionName = 'collectionName'
def collectionNamespace = new MongoNamespace(namespace.getDatabaseName(), collectionName)
def pipeline = [new Document('$match', 1), new Document('$merge', new Document('into', collectionName))]
def pipelineWithIntoDocument = [new Document('$match', 1), new Document('$merge',
new Document('into', new Document('db', 'db2').append('coll', collectionName)))]
when: 'aggregation includes $merge'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipeline, AggregationLevel.COLLECTION, false)
.batchSize(99)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new Document('a', 1))
.comment('this is a comment').iterator()
def operation = executor.getWriteOperation() as AggregateToCollectionOperation
then: 'should use the overrides'
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)),
new BsonDocument('$merge', new BsonDocument('into', new BsonString(collectionName)))],
readConcern, writeConcern,
AggregationLevel.COLLECTION)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new BsonDocument('a', new BsonInt32(1)))
.comment('this is a comment')
)
when: 'the subsequent read should have the batchSize set'
operation = executor.getReadOperation() as FindOperation<Document>
then: 'should use the correct settings'
operation.getNamespace() == collectionNamespace
operation.getBatchSize() == 99
operation.getCollation() == collation
operation.getMaxAwaitTime(MILLISECONDS) == 0
operation.getMaxTime(MILLISECONDS) == 0
when: 'aggregation includes $merge into a different database'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipelineWithIntoDocument, AggregationLevel.COLLECTION, false)
.batchSize(99)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new Document('a', 1))
.comment('this is a comment').iterator()
operation = executor.getWriteOperation() as AggregateToCollectionOperation
then: 'should use the overrides'
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)),
new BsonDocument('$merge', new BsonDocument('into',
new BsonDocument('db', new BsonString('db2')).append('coll', new BsonString(collectionName))))],
readConcern, writeConcern,
AggregationLevel.COLLECTION)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new BsonDocument('a', new BsonInt32(1)))
.comment('this is a comment')
)
when: 'the subsequent read should have the batchSize set'
operation = executor.getReadOperation() as FindOperation<Document>
then: 'should use the correct settings'
operation.getNamespace() == new MongoNamespace('db2', collectionName)
operation.getBatchSize() == 99
operation.getCollation() == collation
operation.getMaxAwaitTime(MILLISECONDS) == 0
operation.getMaxTime(MILLISECONDS) == 0
when: 'aggregation includes $merge and is at the database level'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipeline, AggregationLevel.DATABASE, false)
.batchSize(99)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new Document('a', 1))
.comment('this is a comment').iterator()
operation = executor.getWriteOperation() as AggregateToCollectionOperation
then: 'should use the overrides'
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)),
new BsonDocument('$merge', new BsonDocument('into', new BsonString(collectionName)))],
readConcern, writeConcern,
AggregationLevel.DATABASE)
.maxTime(999, MILLISECONDS)
.allowDiskUse(true)
.collation(collation)
.hint(new BsonDocument('a', new BsonInt32(1)))
.comment('this is a comment')
)
when: 'the subsequent read should have the batchSize set'
operation = executor.getReadOperation() as FindOperation<Document>
then: 'should use the correct settings'
operation.getNamespace() == collectionNamespace
operation.getBatchSize() == 99
operation.getCollation() == collation
operation.getMaxAwaitTime(MILLISECONDS) == 0
operation.getMaxTime(MILLISECONDS) == 0
when: 'toCollection should work as expected'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipeline, AggregationLevel.COLLECTION, false)
.allowDiskUse(true)
.collation(collation)
.hint(new Document('a', 1))
.comment('this is a comment')
.toCollection()
operation = executor.getWriteOperation() as AggregateToCollectionOperation
then:
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)),
new BsonDocument('$merge', new BsonDocument('into', new BsonString(collectionName)))],
readConcern, writeConcern)
.allowDiskUse(true)
.collation(collation)
.hint(new BsonDocument('a', new BsonInt32(1)))
.comment('this is a comment'))
}
def 'should build the expected AggregateToCollectionOperation for $merge string'() {
given:
def executor = new TestOperationExecutor([null, null, null, null, null, null, null])
def collectionName = 'collectionName'
def collectionNamespace = new MongoNamespace(namespace.getDatabaseName(), collectionName)
def pipeline = [new BsonDocument('$match', new BsonDocument()), new BsonDocument('$merge', new BsonString(collectionName))]
when:
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipeline, AggregationLevel.COLLECTION, false)
.iterator()
def operation = executor.getWriteOperation() as AggregateToCollectionOperation
then:
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace, pipeline, readConcern, writeConcern,
AggregationLevel.COLLECTION))
when:
operation = executor.getReadOperation() as FindOperation<Document>
then:
operation.getNamespace() == collectionNamespace
}
def 'should build the expected AggregateToCollectionOperation for $out as a document'() {
given:
def cannedResults = [new Document('_id', 1), new Document('_id', 2), new Document('_id', 3)]
def cursor = {
Stub(BatchCursor) {
def count = 0
def results;
def getResult = {
count++
results = count == 1 ? cannedResults : null
results
}
next() >> {
getResult()
}
hasNext() >> {
count == 0
}
}
}
def executor = new TestOperationExecutor([cursor(), cursor(), cursor(), cursor(), cursor(), cursor()])
def pipeline = [new Document('$match', 1), new Document('$out', new Document('s3', true))]
def outWithDBpipeline = [new Document('$match', 1),
new Document('$out', new Document('db', 'testDB').append('coll', 'testCollection'))]
when: 'aggregation includes $out'
def aggregateIterable = new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, executor, pipeline, AggregationLevel.COLLECTION, false)
aggregateIterable.toCollection()
def operation = executor.getWriteOperation() as AggregateToCollectionOperation
then:
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)), BsonDocument.parse('{$out: {s3: true}}')],
readConcern, writeConcern, AggregationLevel.COLLECTION)
)
when: 'Trying to iterate it should fail'
aggregateIterable.iterator()
then:
thrown(IllegalStateException)
when: 'aggregation includes $out and is at the database level'
aggregateIterable = new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, executor, pipeline, AggregationLevel.DATABASE, false)
aggregateIterable.toCollection()
operation = executor.getWriteOperation() as AggregateToCollectionOperation
then:
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)), BsonDocument.parse('{$out: {s3: true}}')],
readConcern, writeConcern, AggregationLevel.DATABASE)
)
when: 'Trying to iterate it should fail'
aggregateIterable.iterator()
then:
thrown(IllegalStateException)
when: 'toCollection should work as expected'
aggregateIterable = new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, executor, pipeline, AggregationLevel.COLLECTION, false)
aggregateIterable.toCollection()
operation = executor.getWriteOperation() as AggregateToCollectionOperation
then:
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)), BsonDocument.parse('{$out: {s3: true}}')],
readConcern, writeConcern))
when: 'Trying to iterate it should fail'
aggregateIterable.iterator()
then:
thrown(IllegalStateException)
when: 'aggregation includes $out with namespace'
aggregateIterable = new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, executor, outWithDBpipeline, AggregationLevel.COLLECTION, false)
aggregateIterable.toCollection()
operation = executor.getWriteOperation() as AggregateToCollectionOperation
then:
expect operation, isTheSameAs(new AggregateToCollectionOperation(namespace,
[new BsonDocument('$match', new BsonInt32(1)),
BsonDocument.parse('{$out: {db: "testDB", coll: "testCollection"}}')], readConcern, writeConcern))
when: 'Trying to iterate it should succeed'
def results = []
aggregateIterable.into(results)
then:
results == cannedResults
}
def 'should use ClientSession for AggregationOperation'() {
given:
def batchCursor = Stub(BatchCursor) {
_ * hasNext() >> { false }
}
def executor = new TestOperationExecutor([batchCursor, batchCursor]);
def pipeline = [new Document('$match', 1)]
def aggregationIterable = new AggregateIterableImpl(clientSession, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, executor, pipeline, AggregationLevel.COLLECTION, false)
when:
aggregationIterable.first()
then:
executor.getClientSession() == clientSession
when:
aggregationIterable.iterator()
then:
executor.getClientSession() == clientSession
where:
clientSession << [null, Stub(ClientSession)]
}
def 'should use ClientSession for AggregateToCollectionOperation'() {
given:
def batchCursor = Stub(BatchCursor) {
_ * hasNext() >> { false }
}
def executor = new TestOperationExecutor([null, batchCursor, null, batchCursor, null]);
def pipeline = [new Document('$match', 1), new Document('$out', 'collName')]
def aggregationIterable = new AggregateIterableImpl(clientSession, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, executor, pipeline, AggregationLevel.COLLECTION, false)
when:
aggregationIterable.first()
then:
executor.getClientSession() == clientSession
when:
aggregationIterable.iterator()
then:
executor.getClientSession() == clientSession
executor.getClientSession() == clientSession
when:
aggregationIterable.toCollection()
then:
executor.getClientSession() == clientSession
where:
clientSession << [null, Stub(ClientSession)]
}
def 'should handle exceptions correctly'() {
given:
def codecRegistry = fromProviders([new ValueCodecProvider(), new BsonValueCodecProvider()])
def executor = new TestOperationExecutor([new MongoException('failure')])
def pipeline = [new BsonDocument('$match', new BsonInt32(1))]
def aggregationIterable = new AggregateIterableImpl(null, namespace, BsonDocument, BsonDocument, codecRegistry, readPreference,
readConcern, writeConcern, executor, pipeline, AggregationLevel.COLLECTION, false)
when: 'The operation fails with an exception'
aggregationIterable.iterator()
then: 'the future should handle the exception'
thrown(MongoException)
when: 'toCollection should throw IllegalStateException when last state is not $out'
aggregationIterable.toCollection()
then:
thrown(IllegalStateException)
when: 'a codec is missing'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
pipeline, AggregationLevel.COLLECTION, false).iterator()
then:
thrown(CodecConfigurationException)
when: 'pipeline contains null'
new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference, readConcern, writeConcern, executor,
[null], AggregationLevel.COLLECTION, false).iterator()
then:
thrown(IllegalArgumentException)
}
def 'should follow the MongoIterable interface as expected'() {
given:
def cannedResults = [new Document('_id', 1), new Document('_id', 2), new Document('_id', 3)]
def cursor = {
Stub(BatchCursor) {
def count = 0
def results;
def getResult = {
count++
results = count == 1 ? cannedResults : null
results
}
next() >> {
getResult()
}
hasNext() >> {
count == 0
}
}
}
def executor = new TestOperationExecutor([cursor(), cursor(), cursor(), cursor()])
def mongoIterable = new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, executor, [new Document('$match', 1)], AggregationLevel.COLLECTION, false)
when:
def results = mongoIterable.first()
then:
results == cannedResults[0]
when:
def count = 0
mongoIterable.forEach(new Consumer<Document>() {
@Override
void accept(Document document) {
count++
}
})
then:
count == 3
when:
def target = []
mongoIterable.into(target)
then:
target == cannedResults
when:
target = []
mongoIterable.map(new Function<Document, Integer>() {
@Override
Integer apply(Document document) {
document.getInteger('_id')
}
}).into(target)
then:
target == [1, 2, 3]
}
def 'should get and set batchSize as expected'() {
when:
def batchSize = 5
def mongoIterable = new AggregateIterableImpl(null, namespace, Document, Document, codecRegistry, readPreference,
readConcern, writeConcern, Stub(OperationExecutor), [new Document('$match', 1)], AggregationLevel.COLLECTION,
false)
then:
mongoIterable.getBatchSize() == null
when:
mongoIterable.batchSize(batchSize)
then:
mongoIterable.getBatchSize() == batchSize
}
}