/
collection_impl.cpp
1452 lines (1210 loc) · 56.4 KB
/
collection_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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kStorage
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/private/record_store_validate_adaptor.h"
#include "mongo/db/catalog/collection_impl.h"
#include "mongo/base/counter.h"
#include "mongo/base/init.h"
#include "mongo/base/owned_pointer_map.h"
#include "mongo/bson/ordering.h"
#include "mongo/bson/simple_bsonelement_comparator.h"
#include "mongo/bson/simple_bsonobj_comparator.h"
#include "mongo/db/background.h"
#include "mongo/db/catalog/collection_catalog.h"
#include "mongo/db/catalog/collection_catalog_entry.h"
#include "mongo/db/catalog/collection_info_cache_impl.h"
#include "mongo/db/catalog/collection_options.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/catalog/index_catalog_impl.h"
#include "mongo/db/catalog/index_consistency.h"
#include "mongo/db/catalog/index_key_validate.h"
#include "mongo/db/clientcursor.h"
#include "mongo/db/commands/server_status_metric.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/curop.h"
#include "mongo/db/index/index_access_method.h"
#include "mongo/db/index/index_descriptor.h"
#include "mongo/db/keypattern.h"
#include "mongo/db/matcher/expression_parser.h"
#include "mongo/db/op_observer.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/ops/update_request.h"
#include "mongo/db/query/collation/collator_factory_interface.h"
#include "mongo/db/query/collation/collator_interface.h"
#include "mongo/db/query/internal_plans.h"
#include "mongo/db/repl/oplog.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/service_context.h"
#include "mongo/db/storage/durable_catalog.h"
#include "mongo/db/storage/key_string.h"
#include "mongo/db/storage/record_store.h"
#include "mongo/db/update/update_driver.h"
#include "mongo/db/auth/user_document_parser.h" // XXX-ANDY
#include "mongo/rpc/object_check.h"
#include "mongo/util/fail_point_service.h"
#include "mongo/util/log.h"
namespace mongo {
namespace {
// This fail point injects insertion failures for all collections unless a collection name is
// provided in the optional data object during configuration:
// data: {
// collectionNS: <fully-qualified collection namespace>,
// }
MONGO_FAIL_POINT_DEFINE(failCollectionInserts);
// Used to pause after inserting collection data and calling the opObservers. Inserts to
// replicated collections that are not part of a multi-statement transaction will have generated
// their OpTime and oplog entry. Supports parameters to limit pause by namespace and by _id
// of first data item in an insert (must be of type string):
// data: {
// collectionNS: <fully-qualified collection namespace>,
// first_id: <string>
// }
MONGO_FAIL_POINT_DEFINE(hangAfterCollectionInserts);
/**
* Checks the 'failCollectionInserts' fail point at the beginning of an insert operation to see if
* the insert should fail. Returns Status::OK if The function should proceed with the insertion.
* Otherwise, the function should fail and return early with the error Status.
*/
Status checkFailCollectionInsertsFailPoint(const NamespaceString& ns, const BSONObj& firstDoc) {
MONGO_FAIL_POINT_BLOCK(failCollectionInserts, extraData) {
const BSONObj& data = extraData.getData();
const auto collElem = data["collectionNS"];
// If the failpoint specifies no collection or matches the existing one, fail.
if (!collElem || ns.ns() == collElem.str()) {
const std::string msg = str::stream()
<< "Failpoint (failCollectionInserts) has been enabled (" << data
<< "), so rejecting insert (first doc): " << firstDoc;
log() << msg;
return {ErrorCodes::FailPointEnabled, msg};
}
}
return Status::OK();
}
// Uses the collator factory to convert the BSON representation of a collator to a
// CollatorInterface. Returns null if the BSONObj is empty. We expect the stored collation to be
// valid, since it gets validated on collection create.
std::unique_ptr<CollatorInterface> parseCollation(OperationContext* opCtx,
const NamespaceString& nss,
BSONObj collationSpec) {
if (collationSpec.isEmpty()) {
return {nullptr};
}
auto collator =
CollatorFactoryInterface::get(opCtx->getServiceContext())->makeFromBSON(collationSpec);
// If the collection's default collator has a version not currently supported by our ICU
// integration, shut down the server. Errors other than IncompatibleCollationVersion should not
// be possible, so these are an invariant rather than fassert.
if (collator == ErrorCodes::IncompatibleCollationVersion) {
log() << "Collection " << nss
<< " has a default collation which is incompatible with this version: "
<< collationSpec;
fassertFailedNoTrace(40144);
}
invariant(collator.getStatus());
return std::move(collator.getValue());
}
StatusWith<CollectionImpl::ValidationLevel> _parseValidationLevel(StringData newLevel) {
auto status = Collection::parseValidationLevel(newLevel);
if (!status.isOK()) {
return status;
}
if (newLevel == "") {
// default
return CollectionImpl::ValidationLevel::STRICT_V;
} else if (newLevel == "off") {
return CollectionImpl::ValidationLevel::OFF;
} else if (newLevel == "moderate") {
return CollectionImpl::ValidationLevel::MODERATE;
} else if (newLevel == "strict") {
return CollectionImpl::ValidationLevel::STRICT_V;
}
MONGO_UNREACHABLE;
}
StatusWith<CollectionImpl::ValidationAction> _parseValidationAction(StringData newAction) {
auto status = Collection::parseValidationAction(newAction);
if (!status.isOK()) {
return status;
}
if (newAction == "") {
// default
return CollectionImpl::ValidationAction::ERROR_V;
} else if (newAction == "warn") {
return CollectionImpl::ValidationAction::WARN;
} else if (newAction == "error") {
return CollectionImpl::ValidationAction::ERROR_V;
}
MONGO_UNREACHABLE;
}
} // namespace
using std::string;
using std::unique_ptr;
using std::vector;
using logger::LogComponent;
CollectionImpl::CollectionImpl(OperationContext* opCtx,
StringData fullNS,
OptionalCollectionUUID uuid,
CollectionCatalogEntry* details,
RecordStore* recordStore)
: _magic(kMagicNumber),
_ns(fullNS),
_uuid(uuid),
_details(details),
_recordStore(recordStore),
_needCappedLock(supportsDocLocking() && _recordStore && _recordStore->isCapped() &&
_ns.db() != "local"),
_infoCache(std::make_unique<CollectionInfoCacheImpl>(this, _ns)),
_indexCatalog(std::make_unique<IndexCatalogImpl>(this)),
_cappedNotifier(_recordStore && _recordStore->isCapped()
? std::make_unique<CappedInsertNotifier>()
: nullptr) {
if (isCapped())
_recordStore->setCappedCallback(this);
}
CollectionImpl::~CollectionImpl() {
invariant(ok());
if (isCapped()) {
_recordStore->setCappedCallback(nullptr);
_cappedNotifier->kill();
}
if (ns().isOplog()) {
repl::clearLocalOplogPtr();
}
_magic = 0;
}
std::unique_ptr<Collection> CollectionImpl::FactoryImpl::make(
OperationContext* opCtx,
CollectionUUID uuid,
CollectionCatalogEntry* collectionCatalogEntry) const {
auto rs = collectionCatalogEntry->getRecordStore();
const auto nss = collectionCatalogEntry->ns();
return std::make_unique<CollectionImpl>(opCtx, nss.ns(), uuid, collectionCatalogEntry, rs);
}
void CollectionImpl::init(OperationContext* opCtx) {
auto collectionOptions = DurableCatalog::get(opCtx)->getCollectionOptions(opCtx, _ns);
_collator = parseCollation(opCtx, _ns, collectionOptions.collation);
_validatorDoc = collectionOptions.validator.getOwned();
_validator = uassertStatusOK(
parseValidator(opCtx, _validatorDoc, MatchExpressionParser::kAllowAllSpecialFeatures));
_validationAction = uassertStatusOK(_parseValidationAction(collectionOptions.validationAction));
_validationLevel = uassertStatusOK(_parseValidationLevel(collectionOptions.validationLevel));
getIndexCatalog()->init(opCtx).transitional_ignore();
infoCache()->init(opCtx);
_initialized = true;
}
bool CollectionImpl::isInitialized() const {
return _initialized;
}
bool CollectionImpl::requiresIdIndex() const {
if (_ns.isVirtualized() || _ns.isOplog()) {
// No indexes on virtual collections or the oplog.
return false;
}
if (_ns.isSystem()) {
StringData shortName = _ns.coll().substr(_ns.coll().find('.') + 1);
if (shortName == "indexes" || shortName == "namespaces" || shortName == "profile") {
return false;
}
}
return true;
}
std::unique_ptr<SeekableRecordCursor> CollectionImpl::getCursor(OperationContext* opCtx,
bool forward) const {
dassert(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_IS));
invariant(ok());
return _recordStore->getCursor(opCtx, forward);
}
bool CollectionImpl::findDoc(OperationContext* opCtx,
RecordId loc,
Snapshotted<BSONObj>* out) const {
dassert(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_IS));
RecordData rd;
if (!_recordStore->findRecord(opCtx, loc, &rd))
return false;
*out = Snapshotted<BSONObj>(opCtx->recoveryUnit()->getSnapshotId(), rd.releaseToBson());
return true;
}
Status CollectionImpl::checkValidation(OperationContext* opCtx, const BSONObj& document) const {
if (!_validator)
return Status::OK();
if (_validationLevel == ValidationLevel::OFF)
return Status::OK();
if (documentValidationDisabled(opCtx))
return Status::OK();
if (_validator->matchesBSON(document))
return Status::OK();
if (_validationAction == ValidationAction::WARN) {
warning() << "Document would fail validation"
<< " collection: " << ns() << " doc: " << redact(document);
return Status::OK();
}
return {ErrorCodes::DocumentValidationFailure, "Document failed validation"};
}
StatusWithMatchExpression CollectionImpl::parseValidator(
OperationContext* opCtx,
const BSONObj& validator,
MatchExpressionParser::AllowedFeatureSet allowedFeatures,
boost::optional<ServerGlobalParams::FeatureCompatibility::Version>
maxFeatureCompatibilityVersion) const {
if (validator.isEmpty())
return {nullptr};
if (ns().isSystem() && !ns().isDropPendingNamespace()) {
return {ErrorCodes::InvalidOptions,
str::stream() << "Document validators not allowed on system collection " << ns()
<< (_uuid ? " with UUID " + _uuid->toString() : "")};
}
if (ns().isOnInternalDb()) {
return {ErrorCodes::InvalidOptions,
str::stream() << "Document validators are not allowed on collection " << ns().ns()
<< (_uuid ? " with UUID " + _uuid->toString() : "")
<< " in the "
<< ns().db()
<< " internal database"};
}
boost::intrusive_ptr<ExpressionContext> expCtx(new ExpressionContext(opCtx, _collator.get()));
// The MatchExpression and contained ExpressionContext created as part of the validator are
// owned by the Collection and will outlive the OperationContext they were created under.
expCtx->opCtx = nullptr;
// Enforce a maximum feature version if requested.
expCtx->maxFeatureCompatibilityVersion = maxFeatureCompatibilityVersion;
auto statusWithMatcher =
MatchExpressionParser::parse(validator, expCtx, ExtensionsCallbackNoop(), allowedFeatures);
if (!statusWithMatcher.isOK())
return statusWithMatcher.getStatus();
return statusWithMatcher;
}
Status CollectionImpl::insertDocumentsForOplog(OperationContext* opCtx,
const DocWriter* const* docs,
Timestamp* timestamps,
size_t nDocs) {
dassert(opCtx->lockState()->isWriteLocked());
// Since this is only for the OpLog, we can assume these for simplicity.
// This also means that we do not need to forward this object to the OpObserver, which is good
// because it would defeat the purpose of using DocWriter.
invariant(!_validator);
invariant(!_indexCatalog->haveAnyIndexes());
Status status = _recordStore->insertRecordsWithDocWriter(opCtx, docs, timestamps, nDocs);
if (!status.isOK())
return status;
opCtx->recoveryUnit()->onCommit(
[this](boost::optional<Timestamp>) { notifyCappedWaitersIfNeeded(); });
return status;
}
Status CollectionImpl::insertDocuments(OperationContext* opCtx,
const vector<InsertStatement>::const_iterator begin,
const vector<InsertStatement>::const_iterator end,
OpDebug* opDebug,
bool fromMigrate) {
auto status = checkFailCollectionInsertsFailPoint(_ns, (begin != end ? begin->doc : BSONObj()));
if (!status.isOK()) {
return status;
}
// Should really be done in the collection object at creation and updated on index create.
const bool hasIdIndex = _indexCatalog->findIdIndex(opCtx);
for (auto it = begin; it != end; it++) {
if (hasIdIndex && it->doc["_id"].eoo()) {
return Status(ErrorCodes::InternalError,
str::stream()
<< "Collection::insertDocument got document without _id for ns:"
<< _ns);
}
auto status = checkValidation(opCtx, it->doc);
if (!status.isOK())
return status;
}
const SnapshotId sid = opCtx->recoveryUnit()->getSnapshotId();
status = _insertDocuments(opCtx, begin, end, opDebug);
if (!status.isOK()) {
return status;
}
invariant(sid == opCtx->recoveryUnit()->getSnapshotId());
getGlobalServiceContext()->getOpObserver()->onInserts(
opCtx, ns(), uuid(), begin, end, fromMigrate);
opCtx->recoveryUnit()->onCommit(
[this](boost::optional<Timestamp>) { notifyCappedWaitersIfNeeded(); });
MONGO_FAIL_POINT_BLOCK(hangAfterCollectionInserts, extraData) {
const BSONObj& data = extraData.getData();
const auto collElem = data["collectionNS"];
const auto firstIdElem = data["first_id"];
// If the failpoint specifies no collection or matches the existing one, hang.
if ((!collElem || _ns.ns() == collElem.str()) &&
(!firstIdElem || (begin != end && firstIdElem.type() == mongo::String &&
begin->doc["_id"].str() == firstIdElem.str()))) {
string whenFirst =
firstIdElem ? (string(" when first _id is ") + firstIdElem.str()) : "";
while (MONGO_FAIL_POINT(hangAfterCollectionInserts)) {
log() << "hangAfterCollectionInserts fail point enabled for " << _ns << whenFirst
<< ". Blocking until fail point is disabled.";
mongo::sleepsecs(1);
opCtx->checkForInterrupt();
}
}
}
return Status::OK();
}
Status CollectionImpl::insertDocument(OperationContext* opCtx,
const InsertStatement& docToInsert,
OpDebug* opDebug,
bool fromMigrate) {
vector<InsertStatement> docs;
docs.push_back(docToInsert);
return insertDocuments(opCtx, docs.begin(), docs.end(), opDebug, fromMigrate);
}
Status CollectionImpl::insertDocumentForBulkLoader(OperationContext* opCtx,
const BSONObj& doc,
const OnRecordInsertedFn& onRecordInserted) {
auto status = checkFailCollectionInsertsFailPoint(_ns, doc);
if (!status.isOK()) {
return status;
}
status = checkValidation(opCtx, doc);
if (!status.isOK()) {
return status;
}
dassert(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_IX));
// TODO SERVER-30638: using timestamp 0 for these inserts, which are non-oplog so we don't yet
// care about their correct timestamps.
StatusWith<RecordId> loc =
_recordStore->insertRecord(opCtx, doc.objdata(), doc.objsize(), Timestamp());
if (!loc.isOK())
return loc.getStatus();
status = onRecordInserted(loc.getValue());
if (!status.isOK()) {
return status;
}
vector<InsertStatement> inserts;
OplogSlot slot;
// Fetch a new optime now, if necessary.
auto replCoord = repl::ReplicationCoordinator::get(opCtx);
if (!replCoord->isOplogDisabledFor(opCtx, _ns)) {
// Populate 'slot' with a new optime.
slot = repl::getNextOpTime(opCtx);
}
inserts.emplace_back(kUninitializedStmtId, doc, slot);
getGlobalServiceContext()->getOpObserver()->onInserts(
opCtx, ns(), uuid(), inserts.begin(), inserts.end(), false);
opCtx->recoveryUnit()->onCommit(
[this](boost::optional<Timestamp>) { notifyCappedWaitersIfNeeded(); });
return loc.getStatus();
}
Status CollectionImpl::_insertDocuments(OperationContext* opCtx,
const vector<InsertStatement>::const_iterator begin,
const vector<InsertStatement>::const_iterator end,
OpDebug* opDebug) {
dassert(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_IX));
const size_t count = std::distance(begin, end);
if (isCapped() && _indexCatalog->haveAnyIndexes() && count > 1) {
// We require that inserts to indexed capped collections be done one-at-a-time to avoid the
// possibility that a later document causes an earlier document to be deleted before it can
// be indexed.
// TODO SERVER-21512 It would be better to handle this here by just doing single inserts.
return {ErrorCodes::OperationCannotBeBatched,
"Can't batch inserts into indexed capped collections"};
}
if (_needCappedLock) {
// X-lock the metadata resource for this capped collection until the end of the WUOW. This
// prevents the primary from executing with more concurrency than secondaries.
// See SERVER-21646.
Lock::ResourceLock heldUntilEndOfWUOW{
opCtx->lockState(), ResourceId(RESOURCE_METADATA, _ns.ns()), MODE_X};
}
std::vector<Record> records;
records.reserve(count);
std::vector<Timestamp> timestamps;
timestamps.reserve(count);
for (auto it = begin; it != end; it++) {
records.emplace_back(Record{RecordId(), RecordData(it->doc.objdata(), it->doc.objsize())});
timestamps.emplace_back(it->oplogSlot.getTimestamp());
}
Status status = _recordStore->insertRecords(opCtx, &records, timestamps);
if (!status.isOK())
return status;
std::vector<BsonRecord> bsonRecords;
bsonRecords.reserve(count);
int recordIndex = 0;
for (auto it = begin; it != end; it++) {
RecordId loc = records[recordIndex++].id;
invariant(RecordId::min() < loc);
invariant(loc < RecordId::max());
BsonRecord bsonRecord = {loc, Timestamp(it->oplogSlot.getTimestamp()), &(it->doc)};
bsonRecords.push_back(bsonRecord);
}
int64_t keysInserted;
status = _indexCatalog->indexRecords(opCtx, bsonRecords, &keysInserted);
if (opDebug) {
opDebug->additiveMetrics.incrementKeysInserted(keysInserted);
}
return status;
}
void CollectionImpl::setMinimumVisibleSnapshot(Timestamp newMinimumVisibleSnapshot) {
if (!_minVisibleSnapshot || (newMinimumVisibleSnapshot > _minVisibleSnapshot.get())) {
_minVisibleSnapshot = newMinimumVisibleSnapshot;
}
}
bool CollectionImpl::haveCappedWaiters() {
// Waiters keep a shared_ptr to '_cappedNotifier', so there are waiters if this CollectionImpl's
// shared_ptr is not unique (use_count > 1).
return _cappedNotifier.use_count() > 1;
}
void CollectionImpl::notifyCappedWaitersIfNeeded() {
// If there is a notifier object and another thread is waiting on it, then we notify
// waiters of this document insert.
if (haveCappedWaiters())
_cappedNotifier->notifyAll();
}
Status CollectionImpl::aboutToDeleteCapped(OperationContext* opCtx,
const RecordId& loc,
RecordData data) {
BSONObj doc = data.releaseToBson();
int64_t* const nullKeysDeleted = nullptr;
_indexCatalog->unindexRecord(opCtx, doc, loc, false, nullKeysDeleted);
// We are not capturing and reporting to OpDebug the 'keysDeleted' by unindexRecord(). It is
// questionable whether reporting will add diagnostic value to users and may instead be
// confusing as it depends on our internal capped collection document removal strategy.
// We can consider adding either keysDeleted or a new metric reporting document removal if
// justified by user demand.
return Status::OK();
}
void CollectionImpl::deleteDocument(OperationContext* opCtx,
StmtId stmtId,
RecordId loc,
OpDebug* opDebug,
bool fromMigrate,
bool noWarn,
Collection::StoreDeletedDoc storeDeletedDoc) {
if (isCapped()) {
log() << "failing remove on a capped ns " << _ns;
uasserted(10089, "cannot remove from a capped collection");
return;
}
Snapshotted<BSONObj> doc = docFor(opCtx, loc);
getGlobalServiceContext()->getOpObserver()->aboutToDelete(opCtx, ns(), doc.value());
boost::optional<BSONObj> deletedDoc;
if (storeDeletedDoc == Collection::StoreDeletedDoc::On) {
deletedDoc.emplace(doc.value().getOwned());
}
int64_t keysDeleted;
_indexCatalog->unindexRecord(opCtx, doc.value(), loc, noWarn, &keysDeleted);
_recordStore->deleteRecord(opCtx, loc);
getGlobalServiceContext()->getOpObserver()->onDelete(
opCtx, ns(), uuid(), stmtId, fromMigrate, deletedDoc);
if (opDebug) {
opDebug->additiveMetrics.incrementKeysDeleted(keysDeleted);
}
}
Counter64 moveCounter;
ServerStatusMetricField<Counter64> moveCounterDisplay("record.moves", &moveCounter);
RecordId CollectionImpl::updateDocument(OperationContext* opCtx,
RecordId oldLocation,
const Snapshotted<BSONObj>& oldDoc,
const BSONObj& newDoc,
bool indexesAffected,
OpDebug* opDebug,
CollectionUpdateArgs* args) {
{
auto status = checkValidation(opCtx, newDoc);
if (!status.isOK()) {
if (_validationLevel == ValidationLevel::STRICT_V) {
uassertStatusOK(status);
}
// moderate means we have to check the old doc
auto oldDocStatus = checkValidation(opCtx, oldDoc.value());
if (oldDocStatus.isOK()) {
// transitioning from good -> bad is not ok
uassertStatusOK(status);
}
// bad -> bad is ok in moderate mode
}
}
dassert(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_IX));
invariant(oldDoc.snapshotId() == opCtx->recoveryUnit()->getSnapshotId());
invariant(newDoc.isOwned());
if (_needCappedLock) {
// X-lock the metadata resource for this capped collection until the end of the WUOW. This
// prevents the primary from executing with more concurrency than secondaries.
// See SERVER-21646.
Lock::ResourceLock heldUntilEndOfWUOW{
opCtx->lockState(), ResourceId(RESOURCE_METADATA, _ns.ns()), MODE_X};
}
SnapshotId sid = opCtx->recoveryUnit()->getSnapshotId();
BSONElement oldId = oldDoc.value()["_id"];
if (!oldId.eoo() && SimpleBSONElementComparator::kInstance.evaluate(oldId != newDoc["_id"]))
uasserted(13596, "in Collection::updateDocument _id mismatch");
// The MMAPv1 storage engine implements capped collections in a way that does not allow records
// to grow beyond their original size. If MMAPv1 part of a replicaset with storage engines that
// do not have this limitation, replication could result in errors, so it is necessary to set a
// uniform rule here. Similarly, it is not sufficient to disallow growing records, because this
// happens when secondaries roll back an update shrunk a record. Exactly replicating legacy
// MMAPv1 behavior would require padding shrunk documents on all storage engines. Instead forbid
// all size changes.
const auto oldSize = oldDoc.value().objsize();
if (_recordStore->isCapped() && oldSize != newDoc.objsize())
uasserted(ErrorCodes::CannotGrowDocumentInCappedNamespace,
str::stream() << "Cannot change the size of a document in a capped collection: "
<< oldSize
<< " != "
<< newDoc.objsize());
args->preImageDoc = oldDoc.value().getOwned();
uassertStatusOK(
_recordStore->updateRecord(opCtx, oldLocation, newDoc.objdata(), newDoc.objsize()));
if (indexesAffected) {
int64_t keysInserted, keysDeleted;
uassertStatusOK(_indexCatalog->updateRecord(
opCtx, args->preImageDoc.get(), newDoc, oldLocation, &keysInserted, &keysDeleted));
if (opDebug) {
opDebug->additiveMetrics.incrementKeysInserted(keysInserted);
opDebug->additiveMetrics.incrementKeysDeleted(keysDeleted);
}
}
invariant(sid == opCtx->recoveryUnit()->getSnapshotId());
args->updatedDoc = newDoc;
invariant(uuid());
OplogUpdateEntryArgs entryArgs(*args, ns(), *uuid());
getGlobalServiceContext()->getOpObserver()->onUpdate(opCtx, entryArgs);
return {oldLocation};
}
bool CollectionImpl::updateWithDamagesSupported() const {
if (_validator)
return false;
return _recordStore->updateWithDamagesSupported();
}
StatusWith<RecordData> CollectionImpl::updateDocumentWithDamages(
OperationContext* opCtx,
RecordId loc,
const Snapshotted<RecordData>& oldRec,
const char* damageSource,
const mutablebson::DamageVector& damages,
CollectionUpdateArgs* args) {
dassert(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_IX));
invariant(oldRec.snapshotId() == opCtx->recoveryUnit()->getSnapshotId());
invariant(updateWithDamagesSupported());
auto newRecStatus =
_recordStore->updateWithDamages(opCtx, loc, oldRec.value(), damageSource, damages);
if (newRecStatus.isOK()) {
args->updatedDoc = newRecStatus.getValue().toBson();
invariant(uuid());
OplogUpdateEntryArgs entryArgs(*args, ns(), *uuid());
getGlobalServiceContext()->getOpObserver()->onUpdate(opCtx, entryArgs);
}
return newRecStatus;
}
bool CollectionImpl::isTemporary(OperationContext* opCtx) const {
return DurableCatalog::get(opCtx)->getCollectionOptions(opCtx, _ns).temp;
}
bool CollectionImpl::isCapped() const {
return _cappedNotifier.get();
}
CappedCallback* CollectionImpl::getCappedCallback() {
return this;
}
std::shared_ptr<CappedInsertNotifier> CollectionImpl::getCappedInsertNotifier() const {
invariant(isCapped());
return _cappedNotifier;
}
uint64_t CollectionImpl::numRecords(OperationContext* opCtx) const {
return _recordStore->numRecords(opCtx);
}
uint64_t CollectionImpl::dataSize(OperationContext* opCtx) const {
return _recordStore->dataSize(opCtx);
}
uint64_t CollectionImpl::getIndexSize(OperationContext* opCtx,
BSONObjBuilder* details,
int scale) const {
const IndexCatalog* idxCatalog = getIndexCatalog();
std::unique_ptr<IndexCatalog::IndexIterator> ii = idxCatalog->getIndexIterator(opCtx, true);
uint64_t totalSize = 0;
while (ii->more()) {
const IndexCatalogEntry* entry = ii->next();
const IndexDescriptor* descriptor = entry->descriptor();
const IndexAccessMethod* iam = entry->accessMethod();
long long ds = iam->getSpaceUsedBytes(opCtx);
totalSize += ds;
if (details) {
details->appendNumber(descriptor->indexName(), ds / scale);
}
}
return totalSize;
}
/**
* order will be:
* 1) store index specs
* 2) drop indexes
* 3) truncate record store
* 4) re-write indexes
*/
Status CollectionImpl::truncate(OperationContext* opCtx) {
dassert(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_X));
invariant(_indexCatalog->numIndexesInProgress(opCtx) == 0);
// 1) store index specs
vector<BSONObj> indexSpecs;
{
std::unique_ptr<IndexCatalog::IndexIterator> ii =
_indexCatalog->getIndexIterator(opCtx, false);
while (ii->more()) {
const IndexDescriptor* idx = ii->next()->descriptor();
indexSpecs.push_back(idx->infoObj().getOwned());
}
}
// 2) drop indexes
_indexCatalog->dropAllIndexes(opCtx, true);
// 3) truncate record store
auto status = _recordStore->truncate(opCtx);
if (!status.isOK())
return status;
// 4) re-create indexes
for (size_t i = 0; i < indexSpecs.size(); i++) {
status = _indexCatalog->createIndexOnEmptyCollection(opCtx, indexSpecs[i]).getStatus();
if (!status.isOK())
return status;
}
return Status::OK();
}
void CollectionImpl::cappedTruncateAfter(OperationContext* opCtx, RecordId end, bool inclusive) {
dassert(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_X));
invariant(isCapped());
invariant(_indexCatalog->numIndexesInProgress(opCtx) == 0);
_recordStore->cappedTruncateAfter(opCtx, end, inclusive);
}
Status CollectionImpl::setValidator(OperationContext* opCtx, BSONObj validatorDoc) {
invariant(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_X));
// Make owned early so that the parsed match expression refers to the owned object.
if (!validatorDoc.isOwned())
validatorDoc = validatorDoc.getOwned();
// Note that, by the time we reach this, we should have already done a pre-parse that checks for
// banned features, so we don't need to include that check again.
auto statusWithMatcher =
parseValidator(opCtx, validatorDoc, MatchExpressionParser::kAllowAllSpecialFeatures);
if (!statusWithMatcher.isOK())
return statusWithMatcher.getStatus();
DurableCatalog::get(opCtx)->updateValidator(
opCtx, ns(), validatorDoc, getValidationLevel(), getValidationAction());
opCtx->recoveryUnit()->onRollback([
this,
oldValidator = std::move(_validator),
oldValidatorDoc = std::move(_validatorDoc)
]() mutable {
this->_validator = std::move(oldValidator);
this->_validatorDoc = std::move(oldValidatorDoc);
});
_validator = std::move(statusWithMatcher.getValue());
_validatorDoc = std::move(validatorDoc);
return Status::OK();
}
StringData CollectionImpl::getValidationLevel() const {
switch (_validationLevel) {
case ValidationLevel::STRICT_V:
return "strict";
case ValidationLevel::OFF:
return "off";
case ValidationLevel::MODERATE:
return "moderate";
}
MONGO_UNREACHABLE;
}
StringData CollectionImpl::getValidationAction() const {
switch (_validationAction) {
case ValidationAction::ERROR_V:
return "error";
case ValidationAction::WARN:
return "warn";
}
MONGO_UNREACHABLE;
}
Status CollectionImpl::setValidationLevel(OperationContext* opCtx, StringData newLevel) {
invariant(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_X));
auto levelSW = _parseValidationLevel(newLevel);
if (!levelSW.isOK()) {
return levelSW.getStatus();
}
auto oldValidationLevel = _validationLevel;
_validationLevel = levelSW.getValue();
DurableCatalog::get(opCtx)->updateValidator(
opCtx, ns(), _validatorDoc, getValidationLevel(), getValidationAction());
opCtx->recoveryUnit()->onRollback(
[this, oldValidationLevel]() { this->_validationLevel = oldValidationLevel; });
return Status::OK();
}
Status CollectionImpl::setValidationAction(OperationContext* opCtx, StringData newAction) {
invariant(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_X));
auto actionSW = _parseValidationAction(newAction);
if (!actionSW.isOK()) {
return actionSW.getStatus();
}
auto oldValidationAction = _validationAction;
_validationAction = actionSW.getValue();
DurableCatalog::get(opCtx)->updateValidator(
opCtx, ns(), _validatorDoc, getValidationLevel(), getValidationAction());
opCtx->recoveryUnit()->onRollback(
[this, oldValidationAction]() { this->_validationAction = oldValidationAction; });
return Status::OK();
}
Status CollectionImpl::updateValidator(OperationContext* opCtx,
BSONObj newValidator,
StringData newLevel,
StringData newAction) {
invariant(opCtx->lockState()->isCollectionLockedForMode(ns(), MODE_X));
opCtx->recoveryUnit()->onRollback([
this,
oldValidator = std::move(_validator),
oldValidatorDoc = std::move(_validatorDoc),
oldValidationLevel = _validationLevel,
oldValidationAction = _validationAction
]() mutable {
this->_validator = std::move(oldValidator);
this->_validatorDoc = std::move(oldValidatorDoc);
this->_validationLevel = oldValidationLevel;
this->_validationAction = oldValidationAction;
});
DurableCatalog::get(opCtx)->updateValidator(opCtx, ns(), newValidator, newLevel, newAction);
_validatorDoc = std::move(newValidator);
auto validatorSW =
parseValidator(opCtx, _validatorDoc, MatchExpressionParser::kAllowAllSpecialFeatures);
if (!validatorSW.isOK()) {
return validatorSW.getStatus();
}
_validator = std::move(validatorSW.getValue());
auto levelSW = _parseValidationLevel(newLevel);
if (!levelSW.isOK()) {
return levelSW.getStatus();
}
_validationLevel = levelSW.getValue();
auto actionSW = _parseValidationAction(newAction);
if (!actionSW.isOK()) {
return actionSW.getStatus();
}
_validationAction = actionSW.getValue();
return Status::OK();
}
const CollatorInterface* CollectionImpl::getDefaultCollator() const {
return _collator.get();
}
StatusWith<std::vector<BSONObj>> CollectionImpl::addCollationDefaultsToIndexSpecsForCreate(
OperationContext* opCtx, const std::vector<BSONObj>& originalIndexSpecs) const {
std::vector<BSONObj> newIndexSpecs;
auto collator = getDefaultCollator(); // could be null.
auto collatorFactory = CollatorFactoryInterface::get(opCtx->getServiceContext());
for (const auto& originalIndexSpec : originalIndexSpecs) {
auto validateResult =
index_key_validate::validateIndexSpecCollation(opCtx, originalIndexSpec, collator);
if (!validateResult.isOK()) {
return validateResult.getStatus().withContext(
str::stream()
<< "failed to add collation information to index spec for index creation: "
<< originalIndexSpec);
}
const auto& newIndexSpec = validateResult.getValue();
auto keyPattern = newIndexSpec[IndexDescriptor::kKeyPatternFieldName].Obj();
if (IndexDescriptor::isIdIndexPattern(keyPattern)) {
std::unique_ptr<CollatorInterface> indexCollator;
if (auto collationElem = newIndexSpec[IndexDescriptor::kCollationFieldName]) {