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op_observer_impl.cpp
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op_observer_impl.cpp
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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include <boost/move/utility_core.hpp>
#include <boost/none.hpp>
#include <boost/optional/optional.hpp>
#include <boost/preprocessor/control/iif.hpp>
// IWYU pragma: no_include "ext/alloc_traits.h"
#include <algorithm>
#include <cstddef>
#include <iterator>
#include <limits>
#include <mutex>
#include <utility>
#include "mongo/base/error_codes.h"
#include "mongo/base/string_data.h"
#include "mongo/bson/bsonelement.h"
#include "mongo/bson/bsonmisc.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/bson/util/builder.h"
#include "mongo/db/catalog/collection_catalog.h"
#include "mongo/db/catalog/collection_operation_source.h"
#include "mongo/db/catalog/collection_options.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/catalog/import_collection_oplog_entry_gen.h"
#include "mongo/db/catalog_raii.h"
#include "mongo/db/change_stream_pre_images_collection_manager.h"
#include "mongo/db/change_stream_serverless_helpers.h"
#include "mongo/db/client.h"
#include "mongo/db/commands/txn_cmds_gen.h"
#include "mongo/db/concurrency/exception_util.h"
#include "mongo/db/concurrency/lock_manager_defs.h"
#include "mongo/db/concurrency/locker.h"
#include "mongo/db/create_indexes_gen.h"
#include "mongo/db/curop.h"
#include "mongo/db/dbhelpers.h"
#include "mongo/db/feature_flag.h"
#include "mongo/db/logical_time_validator.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/op_observer/batched_write_context.h"
#include "mongo/db/op_observer/op_observer_impl.h"
#include "mongo/db/op_observer/op_observer_util.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/ops/update_result.h"
#include "mongo/db/pipeline/change_stream_preimage_gen.h"
#include "mongo/db/read_write_concern_defaults.h"
#include "mongo/db/record_id.h"
#include "mongo/db/repl/image_collection_entry_gen.h"
#include "mongo/db/repl/member_state.h"
#include "mongo/db/repl/oplog_entry_gen.h"
#include "mongo/db/repl/read_concern_args.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/repl/tenant_migration_access_blocker_util.h"
#include "mongo/db/repl/tenant_migration_decoration.h"
#include "mongo/db/s/scoped_collection_metadata.h"
#include "mongo/db/s/sharding_write_router.h"
#include "mongo/db/server_options.h"
#include "mongo/db/session/logical_session_id_helpers.h"
#include "mongo/db/session/session_txn_record_gen.h"
#include "mongo/db/shard_id.h"
#include "mongo/db/shard_role.h"
#include "mongo/db/storage/record_data.h"
#include "mongo/db/storage/record_store.h"
#include "mongo/db/storage/recovery_unit.h"
#include "mongo/db/storage/storage_parameters_gen.h"
#include "mongo/db/storage/write_unit_of_work.h"
#include "mongo/db/tenant_id.h"
#include "mongo/db/transaction/transaction_participant.h"
#include "mongo/db/transaction/transaction_participant_gen.h"
#include "mongo/db/transaction_resources.h"
#include "mongo/logv2/log.h"
#include "mongo/logv2/log_attr.h"
#include "mongo/logv2/log_component.h"
#include "mongo/platform/compiler.h"
#include "mongo/s/catalog/type_index_catalog.h"
#include "mongo/s/database_version.h"
#include "mongo/s/shard_version.h"
#include "mongo/util/assert_util.h"
#include "mongo/util/clock_source.h"
#include "mongo/util/decorable.h"
#include "mongo/util/duration.h"
#include "mongo/util/fail_point.h"
#include "mongo/util/namespace_string_util.h"
#include "mongo/util/str.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kReplication
namespace mongo {
using repl::DurableOplogEntry;
using repl::MutableOplogEntry;
using ChangeStreamPreImageRecordingMode = repl::ReplOperation::ChangeStreamPreImageRecordingMode;
const auto destinedRecipientDecoration =
OplogDeleteEntryArgs::declareDecoration<boost::optional<ShardId>>();
namespace {
MONGO_FAIL_POINT_DEFINE(failCollectionUpdates);
MONGO_FAIL_POINT_DEFINE(hangAndFailUnpreparedCommitAfterReservingOplogSlot);
constexpr auto kNumRecordsFieldName = "numRecords"_sd;
constexpr auto kMsgFieldName = "msg"_sd;
constexpr long long kInvalidNumRecords = -1LL;
Date_t getWallClockTimeForOpLog(OperationContext* opCtx) {
auto const clockSource = opCtx->getServiceContext()->getFastClockSource();
return clockSource->now();
}
repl::OpTime logOperation(OperationContext* opCtx,
MutableOplogEntry* oplogEntry,
bool assignWallClockTime,
OplogWriter* oplogWriter) {
if (assignWallClockTime) {
oplogEntry->setWallClockTime(getWallClockTimeForOpLog(opCtx));
}
auto& times = OpObserver::Times::get(opCtx).reservedOpTimes;
auto opTime = oplogWriter->logOp(opCtx, oplogEntry);
times.push_back(opTime);
return opTime;
}
void writeChangeStreamPreImageEntry(
OperationContext* opCtx,
// Skip the pre-image insert if we are in the middle of a tenant migration. Pre-image inserts
// for writes during the oplog catchup phase are handled in the oplog application code.
boost::optional<TenantId> tenantId,
const ChangeStreamPreImage& preImage) {
if (repl::tenantMigrationInfo(opCtx)) {
return;
}
ChangeStreamPreImagesCollectionManager::get(opCtx).insertPreImage(opCtx, tenantId, preImage);
}
/**
* Generic function that logs an operation.
* Intended to reduce branching at call-sites by accepting the least common denominator
* type: a MutableOplogEntry.
*
* 'fromMigrate' is generally hard-coded to false, but is supplied by a few
* scenarios from mongos related behavior.
*
* If in a transaction, returns a null OpTime. Otherwise, returns the OpTime the operation
* was logged with.
*/
repl::OpTime logMutableOplogEntry(OperationContext* opCtx,
MutableOplogEntry* entry,
OplogWriter* oplogWriter,
bool isRequiredInMultiDocumentTransaction = false) {
auto txnParticipant = TransactionParticipant::get(opCtx);
const bool inMultiDocumentTransaction =
txnParticipant && opCtx->writesAreReplicated() && txnParticipant.transactionIsOpen();
if (isRequiredInMultiDocumentTransaction) {
invariant(inMultiDocumentTransaction);
}
if (inMultiDocumentTransaction) {
txnParticipant.addTransactionOperation(opCtx, entry->toReplOperation());
return {};
} else {
return logOperation(opCtx, entry, /*assignWallClockTime=*/true, oplogWriter);
}
}
/**
* Updates the session state with the last write timestamp and transaction for that session.
*
* In the case of writes with transaction/statement id, this method will be recursively entered a
* second time for the actual write to the transactions table. Since this write does not generate an
* oplog entry, the recursion will stop at this point.
*/
void onWriteOpCompleted(OperationContext* opCtx,
std::vector<StmtId> stmtIdsWritten,
SessionTxnRecord sessionTxnRecord) {
if (sessionTxnRecord.getLastWriteOpTime().isNull())
return;
auto txnParticipant = TransactionParticipant::get(opCtx);
if (!txnParticipant ||
(!stmtIdsWritten.empty() && stmtIdsWritten.front() == kUninitializedStmtId))
// If the first statement written in uninitialized, then all the statements are assumed to
// be uninitialized.
return;
// We add these here since they may not exist if we return early.
const auto lsid = *opCtx->getLogicalSessionId();
sessionTxnRecord.setSessionId(lsid);
if (isInternalSessionForRetryableWrite(lsid)) {
sessionTxnRecord.setParentSessionId(*getParentSessionId(lsid));
}
sessionTxnRecord.setTxnNum(*opCtx->getTxnNumber());
txnParticipant.onWriteOpCompletedOnPrimary(opCtx, std::move(stmtIdsWritten), sessionTxnRecord);
}
/**
* Given the collection count from Collection::numRecords(), create and return the object for the
* 'o2' field of a drop or rename oplog entry. If the collection count exceeds the upper limit of a
* BSON NumberLong (long long), we will add a count of -1 and append a message with the original
* collection count.
*
* Replication rollback uses this field to correct correction counts on drop-pending collections.
*/
BSONObj makeObject2ForDropOrRename(uint64_t numRecords) {
BSONObjBuilder obj2Builder;
if (numRecords > static_cast<uint64_t>(std::numeric_limits<long long>::max())) {
obj2Builder.appendNumber(kNumRecordsFieldName, kInvalidNumRecords);
std::string msg = str::stream() << "Collection count " << numRecords
<< " is larger than the "
"maximum int64_t value. Setting numRecords to -1.";
obj2Builder.append(kMsgFieldName, msg);
} else {
obj2Builder.appendNumber(kNumRecordsFieldName, static_cast<long long>(numRecords));
}
auto obj = obj2Builder.obj();
return obj;
}
/**
* Write oplog entry(ies) for the update operation.
*/
OpTimeBundle replLogUpdate(OperationContext* opCtx,
const OplogUpdateEntryArgs& args,
MutableOplogEntry* oplogEntry,
OplogWriter* oplogWriter) {
oplogEntry->setTid(args.coll->ns().tenantId());
oplogEntry->setNss(args.coll->ns());
oplogEntry->setUuid(args.coll->uuid());
repl::OplogLink oplogLink;
oplogWriter->appendOplogEntryChainInfo(opCtx, oplogEntry, &oplogLink, args.updateArgs->stmtIds);
OpTimeBundle opTimes;
oplogEntry->setOpType(repl::OpTypeEnum::kUpdate);
oplogEntry->setObject(args.updateArgs->update);
oplogEntry->setObject2(args.updateArgs->criteria);
oplogEntry->setFromMigrateIfTrue(args.updateArgs->source == OperationSource::kFromMigrate);
if (!args.updateArgs->oplogSlots.empty()) {
oplogEntry->setOpTime(args.updateArgs->oplogSlots.back());
}
opTimes.writeOpTime =
logOperation(opCtx, oplogEntry, true /*assignWallClockTime*/, oplogWriter);
opTimes.wallClockTime = oplogEntry->getWallClockTime();
return opTimes;
}
/**
* Write oplog entry(ies) for the delete operation.
*/
OpTimeBundle replLogDelete(OperationContext* opCtx,
const NamespaceString& nss,
MutableOplogEntry* oplogEntry,
const boost::optional<UUID>& uuid,
StmtId stmtId,
bool fromMigrate,
const DocumentKey& documentKey,
const boost::optional<ShardId>& destinedRecipient,
OplogWriter* oplogWriter) {
oplogEntry->setTid(nss.tenantId());
oplogEntry->setNss(nss);
oplogEntry->setUuid(uuid);
oplogEntry->setDestinedRecipient(destinedRecipient);
repl::OplogLink oplogLink;
oplogWriter->appendOplogEntryChainInfo(opCtx, oplogEntry, &oplogLink, {stmtId});
OpTimeBundle opTimes;
oplogEntry->setOpType(repl::OpTypeEnum::kDelete);
oplogEntry->setObject(documentKey.getShardKeyAndId());
oplogEntry->setFromMigrateIfTrue(fromMigrate);
opTimes.writeOpTime =
logOperation(opCtx, oplogEntry, true /*assignWallClockTime*/, oplogWriter);
opTimes.wallClockTime = oplogEntry->getWallClockTime();
return opTimes;
}
void writeToImageCollection(OperationContext* opCtx,
const LogicalSessionId& sessionId,
const repl::ReplOperation::ImageBundle& imageToWrite) {
repl::ImageEntry imageEntry;
imageEntry.set_id(sessionId);
imageEntry.setTxnNumber(opCtx->getTxnNumber().value());
imageEntry.setTs(imageToWrite.timestamp);
imageEntry.setImageKind(imageToWrite.imageKind);
imageEntry.setImage(imageToWrite.imageDoc);
DisableDocumentValidation documentValidationDisabler(
opCtx, DocumentValidationSettings::kDisableInternalValidation);
// In practice, this lock acquisition on kConfigImagesNamespace cannot block. The only time a
// stronger lock acquisition is taken on this namespace is during step up to create the
// collection.
AllowLockAcquisitionOnTimestampedUnitOfWork allowLockAcquisition(opCtx->lockState());
auto collection = acquireCollection(
opCtx,
CollectionAcquisitionRequest(NamespaceString::kConfigImagesNamespace,
PlacementConcern{boost::none, ShardVersion::UNSHARDED()},
repl::ReadConcernArgs::get(opCtx),
AcquisitionPrerequisites::kWrite),
MODE_IX);
auto curOp = CurOp::get(opCtx);
const auto existingNs = curOp->getNSS();
UpdateResult res = Helpers::upsert(opCtx, collection, imageEntry.toBSON());
{
stdx::lock_guard<Client> clientLock(*opCtx->getClient());
curOp->setNS_inlock(existingNs);
}
invariant(res.numDocsModified == 1 || !res.upsertedId.isEmpty());
}
bool shouldTimestampIndexBuildSinglePhase(OperationContext* opCtx, const NamespaceString& nss) {
// This function returns whether a timestamp for a catalog write when beginning an index build,
// or aborting an index build is necessary. There are four scenarios:
// 1. A timestamp is already set -- replication application sets a timestamp ahead of time.
// This could include the phase of initial sync where it applies oplog entries. Also,
// primaries performing an index build via `applyOps` may have a wrapping commit timestamp.
if (!opCtx->recoveryUnit()->getCommitTimestamp().isNull())
return false;
// 2. If the node is initial syncing, we do not set a timestamp.
auto replCoord = repl::ReplicationCoordinator::get(opCtx);
if (replCoord->isReplEnabled() && replCoord->getMemberState().startup2())
return false;
// 3. If the index build is on the local database, do not timestamp.
if (nss.isLocalDB())
return false;
// 4. All other cases, we generate a timestamp by writing a no-op oplog entry. This is
// better than using a ghost timestamp. Writing an oplog entry ensures this node is
// primary.
return true;
}
void logGlobalIndexDDLOperation(OperationContext* opCtx,
const NamespaceString& globalIndexNss,
const UUID& globalIndexUUID,
const StringData commandString,
boost::optional<long long> numKeys,
OplogWriter* oplogWriter) {
invariant(!opCtx->inMultiDocumentTransaction());
BSONObjBuilder builder;
// The rollback implementation requires the collection name to list affected namespaces.
builder.append(commandString, globalIndexNss.coll());
MutableOplogEntry oplogEntry;
oplogEntry.setOpType(repl::OpTypeEnum::kCommand);
oplogEntry.setObject(builder.done());
// On global index drops, persist the number of records into the 'o2' field similar to a
// collection drop. This allows for efficiently restoring the index keys count after rollback
// without forcing a collection scan.
invariant((numKeys && commandString == "dropGlobalIndex") ||
(!numKeys && commandString == "createGlobalIndex"));
if (numKeys) {
oplogEntry.setObject2(makeObject2ForDropOrRename(*numKeys));
}
// The 'ns' field is technically redundant as it can be derived from the uuid, however it's a
// required oplog entry field.
oplogEntry.setNss(globalIndexNss.getCommandNS());
oplogEntry.setUuid(globalIndexUUID);
constexpr StmtId stmtId = 0;
if (TransactionParticipant::get(opCtx)) {
// This is a retryable write: populate the lsid, txnNumber and stmtId fields.
// The oplog link to previous statement is empty and the stmtId is zero because this is a
// single-statement command replicating as a single createGlobalIndex/dropGlobalIndex oplog
// entry.
repl::OplogLink oplogLink;
oplogWriter->appendOplogEntryChainInfo(opCtx, &oplogEntry, &oplogLink, {stmtId});
}
auto writeOpTime = logOperation(opCtx, &oplogEntry, true /*assignWallClockTime*/, oplogWriter);
// Register the retryable write to in-memory transactions table.
SessionTxnRecord sessionTxnRecord;
sessionTxnRecord.setLastWriteOpTime(writeOpTime);
sessionTxnRecord.setLastWriteDate(oplogEntry.getWallClockTime());
onWriteOpCompleted(opCtx, {stmtId}, sessionTxnRecord);
}
} // namespace
OpObserverImpl::OpObserverImpl(std::unique_ptr<OplogWriter> oplogWriter)
: _oplogWriter(std::move(oplogWriter)) {}
void OpObserverImpl::onCreateGlobalIndex(OperationContext* opCtx,
const NamespaceString& globalIndexNss,
const UUID& globalIndexUUID) {
constexpr StringData commandString = "createGlobalIndex"_sd;
logGlobalIndexDDLOperation(opCtx,
globalIndexNss,
globalIndexUUID,
commandString,
boost::none /* numKeys */,
_oplogWriter.get());
}
void OpObserverImpl::onDropGlobalIndex(OperationContext* opCtx,
const NamespaceString& globalIndexNss,
const UUID& globalIndexUUID,
long long numKeys) {
constexpr StringData commandString = "dropGlobalIndex"_sd;
logGlobalIndexDDLOperation(
opCtx, globalIndexNss, globalIndexUUID, commandString, numKeys, _oplogWriter.get());
}
void OpObserverImpl::onCreateIndex(OperationContext* opCtx,
const NamespaceString& nss,
const UUID& uuid,
BSONObj indexDoc,
bool fromMigrate) {
BSONObjBuilder builder;
builder.append(CreateIndexesCommand::kCommandName, nss.coll());
builder.appendElements(indexDoc);
MutableOplogEntry oplogEntry;
oplogEntry.setOpType(repl::OpTypeEnum::kCommand);
oplogEntry.setTid(nss.tenantId());
oplogEntry.setNss(nss.getCommandNS());
oplogEntry.setUuid(uuid);
oplogEntry.setObject(builder.obj());
oplogEntry.setFromMigrateIfTrue(fromMigrate);
auto opTime = logMutableOplogEntry(opCtx, &oplogEntry, _oplogWriter.get());
if (!repl::ReplicationCoordinator::get(opCtx)->isOplogDisabledFor(opCtx, nss)) {
if (opTime.isNull()) {
LOGV2(7360100,
"Added oplog entry for createIndexes to transaction",
logAttrs(oplogEntry.getNss()),
"uuid"_attr = oplogEntry.getUuid(),
"object"_attr = oplogEntry.getObject());
} else {
LOGV2(7360101,
"Wrote oplog entry for createIndexes",
logAttrs(oplogEntry.getNss()),
"uuid"_attr = oplogEntry.getUuid(),
"opTime"_attr = opTime,
"object"_attr = oplogEntry.getObject());
}
}
}
void OpObserverImpl::onStartIndexBuild(OperationContext* opCtx,
const NamespaceString& nss,
const UUID& collUUID,
const UUID& indexBuildUUID,
const std::vector<BSONObj>& indexes,
bool fromMigrate) {
BSONObjBuilder oplogEntryBuilder;
oplogEntryBuilder.append("startIndexBuild", nss.coll());
indexBuildUUID.appendToBuilder(&oplogEntryBuilder, "indexBuildUUID");
BSONArrayBuilder indexesArr(oplogEntryBuilder.subarrayStart("indexes"));
for (const auto& indexDoc : indexes) {
indexesArr.append(indexDoc);
}
indexesArr.done();
MutableOplogEntry oplogEntry;
oplogEntry.setOpType(repl::OpTypeEnum::kCommand);
oplogEntry.setTid(nss.tenantId());
oplogEntry.setNss(nss.getCommandNS());
oplogEntry.setUuid(collUUID);
oplogEntry.setObject(oplogEntryBuilder.done());
oplogEntry.setFromMigrateIfTrue(fromMigrate);
logOperation(opCtx, &oplogEntry, true /*assignWallClockTime*/, _oplogWriter.get());
}
void OpObserverImpl::onStartIndexBuildSinglePhase(OperationContext* opCtx,
const NamespaceString& nss) {
if (!shouldTimestampIndexBuildSinglePhase(opCtx, nss)) {
return;
}
onInternalOpMessage(
opCtx,
{},
boost::none,
BSON("msg" << std::string(str::stream() << "Creating indexes. Coll: "
<< NamespaceStringUtil::serialize(nss))),
boost::none,
boost::none,
boost::none,
boost::none,
boost::none);
}
void OpObserverImpl::onAbortIndexBuildSinglePhase(OperationContext* opCtx,
const NamespaceString& nss) {
if (!shouldTimestampIndexBuildSinglePhase(opCtx, nss)) {
return;
}
onInternalOpMessage(
opCtx,
{},
boost::none,
BSON("msg" << std::string(str::stream() << "Aborting indexes. Coll: "
<< NamespaceStringUtil::serialize(nss))),
boost::none,
boost::none,
boost::none,
boost::none,
boost::none);
}
void OpObserverImpl::onCommitIndexBuild(OperationContext* opCtx,
const NamespaceString& nss,
const UUID& collUUID,
const UUID& indexBuildUUID,
const std::vector<BSONObj>& indexes,
bool fromMigrate) {
BSONObjBuilder oplogEntryBuilder;
oplogEntryBuilder.append("commitIndexBuild", nss.coll());
indexBuildUUID.appendToBuilder(&oplogEntryBuilder, "indexBuildUUID");
BSONArrayBuilder indexesArr(oplogEntryBuilder.subarrayStart("indexes"));
for (const auto& indexDoc : indexes) {
indexesArr.append(indexDoc);
}
indexesArr.done();
MutableOplogEntry oplogEntry;
oplogEntry.setOpType(repl::OpTypeEnum::kCommand);
oplogEntry.setTid(nss.tenantId());
oplogEntry.setNss(nss.getCommandNS());
oplogEntry.setUuid(collUUID);
oplogEntry.setObject(oplogEntryBuilder.done());
oplogEntry.setFromMigrateIfTrue(fromMigrate);
logOperation(opCtx, &oplogEntry, true /*assignWallClockTime*/, _oplogWriter.get());
}
void OpObserverImpl::onAbortIndexBuild(OperationContext* opCtx,
const NamespaceString& nss,
const UUID& collUUID,
const UUID& indexBuildUUID,
const std::vector<BSONObj>& indexes,
const Status& cause,
bool fromMigrate) {
BSONObjBuilder oplogEntryBuilder;
oplogEntryBuilder.append("abortIndexBuild", nss.coll());
indexBuildUUID.appendToBuilder(&oplogEntryBuilder, "indexBuildUUID");
BSONArrayBuilder indexesArr(oplogEntryBuilder.subarrayStart("indexes"));
for (const auto& indexDoc : indexes) {
indexesArr.append(indexDoc);
}
indexesArr.done();
BSONObjBuilder causeBuilder(oplogEntryBuilder.subobjStart("cause"));
// Some functions that extract a Status from a BSONObj, such as getStatusFromCommandResult(),
// expect the 'ok' field.
causeBuilder.appendBool("ok", 0);
cause.serializeErrorToBSON(&causeBuilder);
causeBuilder.done();
MutableOplogEntry oplogEntry;
oplogEntry.setOpType(repl::OpTypeEnum::kCommand);
oplogEntry.setTid(nss.tenantId());
oplogEntry.setNss(nss.getCommandNS());
oplogEntry.setUuid(collUUID);
oplogEntry.setObject(oplogEntryBuilder.done());
oplogEntry.setFromMigrateIfTrue(fromMigrate);
logOperation(opCtx, &oplogEntry, true /*assignWallClockTime*/, _oplogWriter.get());
}
namespace {
std::vector<repl::OpTime> _logInsertOps(OperationContext* opCtx,
MutableOplogEntry* oplogEntryTemplate,
std::vector<InsertStatement>::const_iterator begin,
std::vector<InsertStatement>::const_iterator end,
const std::vector<bool>& fromMigrate,
const ShardingWriteRouter& shardingWriteRouter,
const CollectionPtr& collectionPtr,
OplogWriter* oplogWriter) {
invariant(begin != end);
auto nss = oplogEntryTemplate->getNss();
auto replCoord = repl::ReplicationCoordinator::get(opCtx);
if (replCoord->isOplogDisabledFor(opCtx, nss)) {
invariant(!begin->stmtIds.empty());
uassert(ErrorCodes::IllegalOperation,
str::stream() << "retryable writes is not supported for unreplicated ns: "
<< nss.toStringForErrorMsg(),
begin->stmtIds.front() == kUninitializedStmtId);
return {};
}
// The number of entries in 'fromMigrate' should be consistent with the number of insert
// operations in [begin, end). Also, 'fromMigrate' is a sharding concept, so there is no
// need to check 'fromMigrate' for inserts that are not replicated. See SERVER-75829.
invariant(std::distance(fromMigrate.begin(), fromMigrate.end()) == std::distance(begin, end),
oplogEntryTemplate->toReplOperation().toBSON().toString());
// If this oplog entry is from a tenant migration, include the tenant migration
// UUID and optional donor timeline metadata.
if (const auto& recipientInfo = repl::tenantMigrationInfo(opCtx)) {
oplogEntryTemplate->setFromTenantMigration(recipientInfo->uuid);
if (oplogEntryTemplate->getTid() &&
change_stream_serverless_helpers::isChangeStreamEnabled(
opCtx, *oplogEntryTemplate->getTid()) &&
recipientInfo->donorOplogEntryData) {
oplogEntryTemplate->setDonorOpTime(recipientInfo->donorOplogEntryData->donorOpTime);
oplogEntryTemplate->setDonorApplyOpsIndex(
recipientInfo->donorOplogEntryData->applyOpsIndex);
}
}
const size_t count = end - begin;
// Use OplogAccessMode::kLogOp to avoid recursive locking.
AutoGetOplog oplogWrite(opCtx, OplogAccessMode::kLogOp);
WriteUnitOfWork wuow(opCtx);
std::vector<repl::OpTime> opTimes(count);
std::vector<Timestamp> timestamps(count);
std::vector<BSONObj> bsonOplogEntries(count);
std::vector<Record> records(count);
for (size_t i = 0; i < count; i++) {
// Make a copy from the template for each insert oplog entry.
MutableOplogEntry oplogEntry = *oplogEntryTemplate;
// Make a mutable copy.
auto insertStatementOplogSlot = begin[i].oplogSlot;
// Fetch optime now, if not already fetched.
if (insertStatementOplogSlot.isNull()) {
insertStatementOplogSlot = oplogWriter->getNextOpTimes(opCtx, 1U)[0];
}
const auto docKey = getDocumentKey(collectionPtr, begin[i].doc).getShardKeyAndId();
oplogEntry.setObject(begin[i].doc);
oplogEntry.setObject2(docKey);
oplogEntry.setOpTime(insertStatementOplogSlot);
oplogEntry.setDestinedRecipient(
shardingWriteRouter.getReshardingDestinedRecipient(begin[i].doc));
addDestinedRecipient.execute([&](const BSONObj& data) {
auto recipient = data["destinedRecipient"].String();
oplogEntry.setDestinedRecipient(boost::make_optional<ShardId>({recipient}));
});
repl::OplogLink oplogLink;
if (i > 0)
oplogLink.prevOpTime = opTimes[i - 1];
oplogEntry.setFromMigrateIfTrue(fromMigrate[i]);
oplogWriter->appendOplogEntryChainInfo(opCtx, &oplogEntry, &oplogLink, begin[i].stmtIds);
opTimes[i] = insertStatementOplogSlot;
timestamps[i] = insertStatementOplogSlot.getTimestamp();
bsonOplogEntries[i] = oplogEntry.toBSON();
// The storage engine will assign the RecordId based on the "ts" field of the oplog entry,
// see record_id_helpers::extractKey.
records[i] = Record{
RecordId(), RecordData(bsonOplogEntries[i].objdata(), bsonOplogEntries[i].objsize())};
}
sleepBetweenInsertOpTimeGenerationAndLogOp.execute([&](const BSONObj& data) {
auto numMillis = data["waitForMillis"].numberInt();
LOGV2(7456300,
"Sleeping for {sleepMillis}ms after receiving {numOpTimesReceived} optimes from "
"{firstOpTime} to "
"{lastOpTime}",
"Sleeping due to sleepBetweenInsertOpTimeGenerationAndLogOp failpoint",
"sleepMillis"_attr = numMillis,
"numOpTimesReceived"_attr = count,
"firstOpTime"_attr = opTimes.front(),
"lastOpTime"_attr = opTimes.back());
sleepmillis(numMillis);
});
invariant(!opTimes.empty());
auto lastOpTime = opTimes.back();
invariant(!lastOpTime.isNull());
auto wallClockTime = oplogEntryTemplate->getWallClockTime();
oplogWriter->logOplogRecords(opCtx,
nss,
&records,
timestamps,
oplogWrite.getCollection(),
lastOpTime,
wallClockTime,
/*isAbortIndexBuild=*/false);
wuow.commit();
return opTimes;
}
} // namespace
void OpObserverImpl::onInserts(OperationContext* opCtx,
const CollectionPtr& coll,
std::vector<InsertStatement>::const_iterator first,
std::vector<InsertStatement>::const_iterator last,
std::vector<bool> fromMigrate,
bool defaultFromMigrate,
OpStateAccumulator* opAccumulator) {
auto txnParticipant = TransactionParticipant::get(opCtx);
const bool inMultiDocumentTransaction =
txnParticipant && opCtx->writesAreReplicated() && txnParticipant.transactionIsOpen();
const auto& nss = coll->ns();
const auto& uuid = coll->uuid();
std::vector<repl::OpTime> opTimeList;
repl::OpTime lastOpTime;
auto shardingWriteRouter = std::make_unique<ShardingWriteRouter>(opCtx, nss);
auto& batchedWriteContext = BatchedWriteContext::get(opCtx);
const bool inBatchedWrite = batchedWriteContext.writesAreBatched();
if (inBatchedWrite) {
invariant(!defaultFromMigrate);
for (auto iter = first; iter != last; iter++) {
const auto docKey = getDocumentKey(coll, iter->doc).getShardKeyAndId();
auto operation = MutableOplogEntry::makeInsertOperation(nss, uuid, iter->doc, docKey);
operation.setDestinedRecipient(
shardingWriteRouter->getReshardingDestinedRecipient(iter->doc));
operation.setFromMigrateIfTrue(fromMigrate[std::distance(first, iter)]);
batchedWriteContext.addBatchedOperation(opCtx, operation);
}
} else if (inMultiDocumentTransaction) {
invariant(!defaultFromMigrate);
// Do not add writes to the profile collection to the list of transaction operations, since
// these are done outside the transaction. There is no top-level WriteUnitOfWork when we are
// in a SideTransactionBlock.
if (!opCtx->getWriteUnitOfWork()) {
invariant(nss.isSystemDotProfile());
return;
}
const bool inRetryableInternalTransaction =
isInternalSessionForRetryableWrite(*opCtx->getLogicalSessionId());
for (auto iter = first; iter != last; iter++) {
const auto docKey = getDocumentKey(coll, iter->doc).getShardKeyAndId();
auto operation = MutableOplogEntry::makeInsertOperation(nss, uuid, iter->doc, docKey);
if (inRetryableInternalTransaction) {
operation.setInitializedStatementIds(iter->stmtIds);
}
operation.setDestinedRecipient(
shardingWriteRouter->getReshardingDestinedRecipient(iter->doc));
operation.setFromMigrateIfTrue(fromMigrate[std::distance(first, iter)]);
txnParticipant.addTransactionOperation(opCtx, operation);
}
} else {
// Ensure well-formed embedded ReplOperation for logging.
// This means setting optype, nss, and object at the minimum.
MutableOplogEntry oplogEntryTemplate;
oplogEntryTemplate.setOpType(repl::OpTypeEnum::kInsert);
oplogEntryTemplate.setTid(nss.tenantId());
oplogEntryTemplate.setNss(nss);
oplogEntryTemplate.setUuid(uuid);
oplogEntryTemplate.setObject({});
oplogEntryTemplate.setFromMigrateIfTrue(defaultFromMigrate);
Date_t lastWriteDate = getWallClockTimeForOpLog(opCtx);
oplogEntryTemplate.setWallClockTime(lastWriteDate);
opTimeList = _logInsertOps(opCtx,
&oplogEntryTemplate,
first,
last,
std::move(fromMigrate),
*shardingWriteRouter,
coll,
_oplogWriter.get());
if (!opTimeList.empty())
lastOpTime = opTimeList.back();
auto& times = OpObserver::Times::get(opCtx).reservedOpTimes;
using std::begin;
using std::end;
times.insert(end(times), begin(opTimeList), end(opTimeList));
std::vector<StmtId> stmtIdsWritten;
std::for_each(first, last, [&](const InsertStatement& stmt) {
stmtIdsWritten.insert(stmtIdsWritten.end(), stmt.stmtIds.begin(), stmt.stmtIds.end());
});
SessionTxnRecord sessionTxnRecord;
sessionTxnRecord.setLastWriteOpTime(lastOpTime);
sessionTxnRecord.setLastWriteDate(lastWriteDate);
onWriteOpCompleted(opCtx, stmtIdsWritten, sessionTxnRecord);
}
if (opAccumulator) {
opAccumulator->insertOpTimes = std::move(opTimeList);
shardingWriteRouterOpStateAccumulatorDecoration(opAccumulator) =
std::move(shardingWriteRouter);
}
}
void OpObserverImpl::onInsertGlobalIndexKey(OperationContext* opCtx,
const NamespaceString& globalIndexNss,
const UUID& globalIndexUuid,
const BSONObj& key,
const BSONObj& docKey) {
if (!opCtx->writesAreReplicated()) {
return;
}
invariant(!opCtx->isRetryableWrite());
// _shardsvrInsertGlobalIndexKey must run inside a multi-doc transaction.
bool isRequiredInMultiDocumentTransaction = true;
MutableOplogEntry oplogEntry = MutableOplogEntry::makeGlobalIndexCrudOperation(
repl::OpTypeEnum::kInsertGlobalIndexKey, globalIndexNss, globalIndexUuid, key, docKey);
logMutableOplogEntry(
opCtx, &oplogEntry, _oplogWriter.get(), isRequiredInMultiDocumentTransaction);
}
void OpObserverImpl::onDeleteGlobalIndexKey(OperationContext* opCtx,
const NamespaceString& globalIndexNss,
const UUID& globalIndexUuid,
const BSONObj& key,
const BSONObj& docKey) {
if (!opCtx->writesAreReplicated()) {
return;
}
invariant(!opCtx->isRetryableWrite());
// _shardsvrDeleteGlobalIndexKey must run inside a multi-doc transaction.
bool isRequiredInMultiDocumentTransaction = true;
MutableOplogEntry oplogEntry = MutableOplogEntry::makeGlobalIndexCrudOperation(
repl::OpTypeEnum::kDeleteGlobalIndexKey, globalIndexNss, globalIndexUuid, key, docKey);
logMutableOplogEntry(
opCtx, &oplogEntry, _oplogWriter.get(), isRequiredInMultiDocumentTransaction);
}
void OpObserverImpl::onUpdate(OperationContext* opCtx,
const OplogUpdateEntryArgs& args,
OpStateAccumulator* opAccumulator) {
failCollectionUpdates.executeIf(
[&](const BSONObj&) {
uasserted(40654,
str::stream() << "failCollectionUpdates failpoint enabled, namespace: "
<< args.coll->ns().toStringForErrorMsg()
<< ", update: " << args.updateArgs->update
<< " on document with " << args.updateArgs->criteria);
},
[&](const BSONObj& data) {
// If the failpoint specifies no collection or matches the existing one, fail.
const auto fpNss = NamespaceStringUtil::parseFailPointData(data, "collectionNS");
return fpNss.isEmpty() || args.coll->ns() == fpNss;
});
// Do not log a no-op operation; see SERVER-21738
if (args.updateArgs->update.isEmpty()) {
return;
}
auto txnParticipant = TransactionParticipant::get(opCtx);
const bool inMultiDocumentTransaction =
txnParticipant && opCtx->writesAreReplicated() && txnParticipant.transactionIsOpen();
auto shardingWriteRouter = std::make_unique<ShardingWriteRouter>(opCtx, args.coll->ns());
OpTimeBundle opTime;
auto& batchedWriteContext = BatchedWriteContext::get(opCtx);
const bool inBatchedWrite = batchedWriteContext.writesAreBatched();
if (inBatchedWrite) {
auto operation = MutableOplogEntry::makeUpdateOperation(
args.coll->ns(), args.coll->uuid(), args.updateArgs->update, args.updateArgs->criteria);
operation.setDestinedRecipient(
shardingWriteRouter->getReshardingDestinedRecipient(args.updateArgs->updatedDoc));
operation.setFromMigrateIfTrue(args.updateArgs->source == OperationSource::kFromMigrate);
batchedWriteContext.addBatchedOperation(opCtx, operation);
} else if (inMultiDocumentTransaction) {
const bool inRetryableInternalTransaction =
isInternalSessionForRetryableWrite(*opCtx->getLogicalSessionId());
invariant(
inRetryableInternalTransaction ||
args.retryableFindAndModifyLocation == RetryableFindAndModifyLocation::kNone,
str::stream()
<< "Attempted a retryable write within a non-retryable multi-document transaction");
auto operation = MutableOplogEntry::makeUpdateOperation(
args.coll->ns(), args.coll->uuid(), args.updateArgs->update, args.updateArgs->criteria);
if (inRetryableInternalTransaction) {
operation.setInitializedStatementIds(args.updateArgs->stmtIds);
if (args.updateArgs->storeDocOption == CollectionUpdateArgs::StoreDocOption::PreImage) {
invariant(!args.updateArgs->preImageDoc.isEmpty(),
str::stream()
<< "Pre-image document must be present for pre-image recording");
operation.setPreImage(args.updateArgs->preImageDoc.getOwned());
operation.setPreImageRecordedForRetryableInternalTransaction();
if (args.retryableFindAndModifyLocation ==
RetryableFindAndModifyLocation::kSideCollection) {
operation.setNeedsRetryImage(repl::RetryImageEnum::kPreImage);
}
}
if (args.updateArgs->storeDocOption ==
CollectionUpdateArgs::StoreDocOption::PostImage) {
invariant(!args.updateArgs->updatedDoc.isEmpty(),
str::stream()
<< "Update document must be present for pre-image recording");
operation.setPostImage(args.updateArgs->updatedDoc.getOwned());
if (args.retryableFindAndModifyLocation ==
RetryableFindAndModifyLocation::kSideCollection) {
operation.setNeedsRetryImage(repl::RetryImageEnum::kPostImage);
}
}
}
if (args.updateArgs->changeStreamPreAndPostImagesEnabledForCollection) {
invariant(!args.updateArgs->preImageDoc.isEmpty(),
str::stream()
<< "Pre-image document must be present for pre-image recording");
operation.setPreImage(args.updateArgs->preImageDoc.getOwned());
operation.setChangeStreamPreImageRecordingMode(
ChangeStreamPreImageRecordingMode::kPreImagesCollection);
}
const auto& scopedCollectionDescription = shardingWriteRouter->getCollDesc();
// ShardingWriteRouter only has boost::none scopedCollectionDescription when not in a
// sharded cluster.
if (scopedCollectionDescription && scopedCollectionDescription->isSharded()) {
operation.setPostImageDocumentKey(
scopedCollectionDescription->extractDocumentKey(args.updateArgs->updatedDoc)
.getOwned());
}
operation.setDestinedRecipient(
shardingWriteRouter->getReshardingDestinedRecipient(args.updateArgs->updatedDoc));
operation.setFromMigrateIfTrue(args.updateArgs->source == OperationSource::kFromMigrate);
txnParticipant.addTransactionOperation(opCtx, operation);
} else {
MutableOplogEntry oplogEntry;
oplogEntry.setDestinedRecipient(
shardingWriteRouter->getReshardingDestinedRecipient(args.updateArgs->updatedDoc));
if (args.retryableFindAndModifyLocation ==
RetryableFindAndModifyLocation::kSideCollection) {
// If we've stored a preImage:
if (args.updateArgs->storeDocOption == CollectionUpdateArgs::StoreDocOption::PreImage) {
oplogEntry.setNeedsRetryImage({repl::RetryImageEnum::kPreImage});
} else if (args.updateArgs->storeDocOption ==
CollectionUpdateArgs::StoreDocOption::PostImage) {
// Or if we're storing a postImage.
oplogEntry.setNeedsRetryImage({repl::RetryImageEnum::kPostImage});
}
}
opTime = replLogUpdate(opCtx, args, &oplogEntry, _oplogWriter.get());