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The Java operations layer for the MongoDB Java Driver. Third parties can ' +
'wrap this layer to provide custom higher-level APIs
/*
* 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.internal.operation;
import com.mongodb.MongoBulkWriteException;
import com.mongodb.MongoClientException;
import com.mongodb.MongoInternalException;
import com.mongodb.MongoNamespace;
import com.mongodb.WriteConcern;
import com.mongodb.bulk.BulkWriteError;
import com.mongodb.bulk.BulkWriteInsert;
import com.mongodb.bulk.BulkWriteResult;
import com.mongodb.bulk.BulkWriteUpsert;
import com.mongodb.bulk.WriteConcernError;
import com.mongodb.connection.ConnectionDescription;
import com.mongodb.internal.bulk.DeleteRequest;
import com.mongodb.internal.bulk.UpdateRequest;
import com.mongodb.internal.bulk.WriteRequest;
import com.mongodb.internal.bulk.WriteRequestWithIndex;
import com.mongodb.internal.connection.BulkWriteBatchCombiner;
import com.mongodb.internal.connection.IndexMap;
import com.mongodb.internal.connection.SplittablePayload;
import com.mongodb.internal.session.SessionContext;
import com.mongodb.internal.validator.MappedFieldNameValidator;
import com.mongodb.internal.validator.NoOpFieldNameValidator;
import com.mongodb.internal.validator.ReplacingDocumentFieldNameValidator;
import com.mongodb.internal.validator.UpdateFieldNameValidator;
import com.mongodb.lang.Nullable;
import org.bson.BsonArray;
import org.bson.BsonBoolean;
import org.bson.BsonDocument;
import org.bson.BsonInt32;
import org.bson.BsonInt64;
import org.bson.BsonString;
import org.bson.BsonValue;
import org.bson.FieldNameValidator;
import org.bson.codecs.BsonValueCodecProvider;
import org.bson.codecs.Decoder;
import org.bson.codecs.configuration.CodecRegistry;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import static com.mongodb.assertions.Assertions.assertNotNull;
import static com.mongodb.internal.bulk.WriteRequest.Type.DELETE;
import static com.mongodb.internal.bulk.WriteRequest.Type.INSERT;
import static com.mongodb.internal.bulk.WriteRequest.Type.REPLACE;
import static com.mongodb.internal.bulk.WriteRequest.Type.UPDATE;
import static com.mongodb.internal.operation.DocumentHelper.putIfNotNull;
import static com.mongodb.internal.operation.OperationHelper.LOGGER;
import static com.mongodb.internal.operation.OperationHelper.isRetryableWrite;
import static com.mongodb.internal.operation.WriteConcernHelper.createWriteConcernError;
import static org.bson.codecs.configuration.CodecRegistries.fromProviders;
/**
* This class is not part of the public API and may be removed or changed at any time
*/
public final class BulkWriteBatch {
private static final CodecRegistry REGISTRY = fromProviders(new BsonValueCodecProvider());
private static final Decoder DECODER = REGISTRY.get(BsonDocument.class);
private static final FieldNameValidator NO_OP_FIELD_NAME_VALIDATOR = new NoOpFieldNameValidator();
private final MongoNamespace namespace;
private final ConnectionDescription connectionDescription;
private final boolean ordered;
private final WriteConcern writeConcern;
private final Boolean bypassDocumentValidation;
private final boolean retryWrites;
private final BulkWriteBatchCombiner bulkWriteBatchCombiner;
private final IndexMap indexMap;
private final WriteRequest.Type batchType;
private final BsonDocument command;
private final SplittablePayload payload;
private final List unprocessed;
private final SessionContext sessionContext;
private final BsonValue comment;
private final BsonDocument variables;
static BulkWriteBatch createBulkWriteBatch(final MongoNamespace namespace,
final ConnectionDescription connectionDescription,
final boolean ordered, final WriteConcern writeConcern,
final Boolean bypassDocumentValidation, final boolean retryWrites,
final List writeRequests,
final SessionContext sessionContext,
@Nullable final BsonValue comment, @Nullable final BsonDocument variables) {
if (sessionContext.hasSession() && !sessionContext.isImplicitSession() && !sessionContext.hasActiveTransaction()
&& !writeConcern.isAcknowledged()) {
throw new MongoClientException("Unacknowledged writes are not supported when using an explicit session");
}
boolean canRetryWrites = isRetryableWrite(retryWrites, writeConcern, connectionDescription, sessionContext);
List writeRequestsWithIndex = new ArrayList<>();
boolean writeRequestsAreRetryable = true;
for (int i = 0; i < writeRequests.size(); i++) {
WriteRequest writeRequest = writeRequests.get(i);
writeRequestsAreRetryable = writeRequestsAreRetryable && isRetryable(writeRequest);
writeRequestsWithIndex.add(new WriteRequestWithIndex(writeRequest, i));
}
if (canRetryWrites && !writeRequestsAreRetryable) {
canRetryWrites = false;
LOGGER.debug("retryWrites set but one or more writeRequests do not support retryable writes");
}
return new BulkWriteBatch(namespace, connectionDescription, ordered, writeConcern, bypassDocumentValidation,
canRetryWrites, new BulkWriteBatchCombiner(connectionDescription.getServerAddress(), ordered, writeConcern),
writeRequestsWithIndex, sessionContext, comment, variables);
}
private BulkWriteBatch(final MongoNamespace namespace, final ConnectionDescription connectionDescription,
final boolean ordered, final WriteConcern writeConcern, @Nullable final Boolean bypassDocumentValidation,
final boolean retryWrites, final BulkWriteBatchCombiner bulkWriteBatchCombiner,
final List writeRequestsWithIndices, final SessionContext sessionContext,
@Nullable final BsonValue comment, @Nullable final BsonDocument variables) {
this.namespace = namespace;
this.connectionDescription = connectionDescription;
this.ordered = ordered;
this.writeConcern = writeConcern;
this.bypassDocumentValidation = bypassDocumentValidation;
this.bulkWriteBatchCombiner = bulkWriteBatchCombiner;
this.batchType = writeRequestsWithIndices.isEmpty() ? INSERT : writeRequestsWithIndices.get(0).getType();
this.retryWrites = retryWrites;
List payloadItems = new ArrayList<>();
List unprocessedItems = new ArrayList<>();
IndexMap indexMap = IndexMap.create();
for (int i = 0; i < writeRequestsWithIndices.size(); i++) {
WriteRequestWithIndex writeRequestWithIndex = writeRequestsWithIndices.get(i);
if (writeRequestWithIndex.getType() != batchType) {
if (ordered) {
unprocessedItems.addAll(writeRequestsWithIndices.subList(i, writeRequestsWithIndices.size()));
break;
} else {
unprocessedItems.add(writeRequestWithIndex);
continue;
}
}
indexMap = indexMap.add(payloadItems.size(), writeRequestWithIndex.getIndex());
payloadItems.add(writeRequestWithIndex);
}
this.indexMap = indexMap;
this.unprocessed = unprocessedItems;
this.payload = new SplittablePayload(getPayloadType(batchType), payloadItems);
this.sessionContext = sessionContext;
this.comment = comment;
this.variables = variables;
this.command = new BsonDocument();
if (!payloadItems.isEmpty()) {
command.put(getCommandName(batchType), new BsonString(namespace.getCollectionName()));
command.put("ordered", new BsonBoolean(ordered));
if (!writeConcern.isServerDefault() && !sessionContext.hasActiveTransaction()) {
command.put("writeConcern", writeConcern.asDocument());
}
if (bypassDocumentValidation != null) {
command.put("bypassDocumentValidation", new BsonBoolean(bypassDocumentValidation));
}
putIfNotNull(command, "comment", comment);
putIfNotNull(command, "let", variables);
if (retryWrites) {
command.put("txnNumber", new BsonInt64(sessionContext.advanceTransactionNumber()));
}
}
}
private BulkWriteBatch(final MongoNamespace namespace, final ConnectionDescription connectionDescription,
final boolean ordered, final WriteConcern writeConcern, final Boolean bypassDocumentValidation,
final boolean retryWrites, final BulkWriteBatchCombiner bulkWriteBatchCombiner, final IndexMap indexMap,
final WriteRequest.Type batchType, final BsonDocument command, final SplittablePayload payload,
final List unprocessed, final SessionContext sessionContext,
@Nullable final BsonValue comment, @Nullable final BsonDocument variables) {
this.namespace = namespace;
this.connectionDescription = connectionDescription;
this.ordered = ordered;
this.writeConcern = writeConcern;
this.bypassDocumentValidation = bypassDocumentValidation;
this.bulkWriteBatchCombiner = bulkWriteBatchCombiner;
this.indexMap = indexMap;
this.batchType = batchType;
this.payload = payload;
this.unprocessed = unprocessed;
this.retryWrites = retryWrites;
this.sessionContext = sessionContext;
this.comment = comment;
this.variables = variables;
if (retryWrites) {
command.put("txnNumber", new BsonInt64(sessionContext.advanceTransactionNumber()));
}
this.command = command;
}
void addResult(@Nullable final BsonDocument result) {
if (writeConcern.isAcknowledged()) {
if (hasError(assertNotNull(result))) {
MongoBulkWriteException bulkWriteException = getBulkWriteException(result);
bulkWriteBatchCombiner.addErrorResult(bulkWriteException, indexMap);
} else {
bulkWriteBatchCombiner.addResult(getBulkWriteResult(result));
}
}
}
boolean getRetryWrites() {
return retryWrites;
}
BsonDocument getCommand() {
return command;
}
SplittablePayload getPayload() {
return payload;
}
Decoder getDecoder() {
return DECODER;
}
BulkWriteResult getResult() {
return bulkWriteBatchCombiner.getResult();
}
boolean hasErrors() {
return bulkWriteBatchCombiner.hasErrors();
}
@Nullable
MongoBulkWriteException getError() {
return bulkWriteBatchCombiner.getError();
}
boolean shouldProcessBatch() {
return !bulkWriteBatchCombiner.shouldStopSendingMoreBatches() && !payload.isEmpty();
}
boolean hasAnotherBatch() {
return !unprocessed.isEmpty();
}
BulkWriteBatch getNextBatch() {
if (payload.hasAnotherSplit()) {
IndexMap nextIndexMap = IndexMap.create();
int newIndex = 0;
for (int i = payload.getPosition(); i < payload.size(); i++) {
nextIndexMap = nextIndexMap.add(newIndex, indexMap.map(i));
newIndex++;
}
return new BulkWriteBatch(namespace, connectionDescription, ordered, writeConcern, bypassDocumentValidation, retryWrites,
bulkWriteBatchCombiner, nextIndexMap, batchType, command, payload.getNextSplit(), unprocessed, sessionContext,
comment, variables);
} else {
return new BulkWriteBatch(namespace, connectionDescription, ordered, writeConcern, bypassDocumentValidation, retryWrites,
bulkWriteBatchCombiner, unprocessed, sessionContext, comment, variables);
}
}
FieldNameValidator getFieldNameValidator() {
if (batchType == UPDATE || batchType == REPLACE) {
Map rootMap = new HashMap<>();
if (batchType == REPLACE) {
rootMap.put("u", new ReplacingDocumentFieldNameValidator());
} else {
rootMap.put("u", new UpdateFieldNameValidator());
}
return new MappedFieldNameValidator(NO_OP_FIELD_NAME_VALIDATOR, rootMap);
} else {
return NO_OP_FIELD_NAME_VALIDATOR;
}
}
private BulkWriteResult getBulkWriteResult(final BsonDocument result) {
int count = result.getNumber("n").intValue();
List insertedItems = getInsertedItems(result);
List upsertedItems = getUpsertedItems(result);
return BulkWriteResult.acknowledged(batchType, count - upsertedItems.size(), getModifiedCount(result), upsertedItems,
insertedItems);
}
private List getInsertedItems(final BsonDocument result) {
Set writeErrors = getWriteErrors(result).stream().map(BulkWriteError::getIndex).collect(Collectors.toSet());
return payload.getInsertedIds().entrySet().stream()
.filter(entry -> !writeErrors.contains(entry.getKey()))
.map(entry -> new BulkWriteInsert(entry.getKey(), entry.getValue()))
.collect(Collectors.toList());
}
private List getUpsertedItems(final BsonDocument result) {
BsonArray upsertedValue = result.getArray("upserted", new BsonArray());
List bulkWriteUpsertList = new ArrayList<>();
for (BsonValue upsertedItem : upsertedValue) {
BsonDocument upsertedItemDocument = (BsonDocument) upsertedItem;
bulkWriteUpsertList.add(new BulkWriteUpsert(indexMap.map(upsertedItemDocument.getNumber("index").intValue()),
upsertedItemDocument.get("_id")));
}
return bulkWriteUpsertList;
}
private int getModifiedCount(final BsonDocument result) {
return result.getNumber("nModified", new BsonInt32(0)).intValue();
}
private boolean hasError(final BsonDocument result) {
return result.get("writeErrors") != null || result.get("writeConcernError") != null;
}
private MongoBulkWriteException getBulkWriteException(final BsonDocument result) {
if (!hasError(result)) {
throw new MongoInternalException("This method should not have been called");
}
return new MongoBulkWriteException(getBulkWriteResult(result), getWriteErrors(result),
getWriteConcernError(result), connectionDescription.getServerAddress(),
result.getArray("errorLabels", new BsonArray()).stream().map(i -> i.asString().getValue()).collect(Collectors.toSet()));
}
private List getWriteErrors(final BsonDocument result) {
List writeErrors = new ArrayList<>();
BsonArray writeErrorsDocuments = (BsonArray) result.get("writeErrors");
if (writeErrorsDocuments != null) {
for (BsonValue cur : writeErrorsDocuments) {
BsonDocument curDocument = (BsonDocument) cur;
writeErrors.add(new BulkWriteError(curDocument.getNumber("code").intValue(),
curDocument.getString("errmsg").getValue(),
curDocument.getDocument("errInfo", new BsonDocument()),
curDocument.getNumber("index").intValue()));
}
}
return writeErrors;
}
@Nullable
private WriteConcernError getWriteConcernError(final BsonDocument result) {
BsonDocument writeConcernErrorDocument = (BsonDocument) result.get("writeConcernError");
if (writeConcernErrorDocument == null) {
return null;
} else {
return createWriteConcernError(writeConcernErrorDocument);
}
}
private String getCommandName(final WriteRequest.Type batchType) {
if (batchType == INSERT) {
return "insert";
} else if (batchType == UPDATE || batchType == REPLACE) {
return "update";
} else {
return "delete";
}
}
private SplittablePayload.Type getPayloadType(final WriteRequest.Type batchType) {
if (batchType == INSERT) {
return SplittablePayload.Type.INSERT;
} else if (batchType == UPDATE) {
return SplittablePayload.Type.UPDATE;
} else if (batchType == REPLACE) {
return SplittablePayload.Type.REPLACE;
} else {
return SplittablePayload.Type.DELETE;
}
}
private static boolean isRetryable(final WriteRequest writeRequest) {
if (writeRequest.getType() == UPDATE || writeRequest.getType() == REPLACE) {
return !((UpdateRequest) writeRequest).isMulti();
} else if (writeRequest.getType() == DELETE) {
return !((DeleteRequest) writeRequest).isMulti();
}
return true;
}
}