StatusWith<RecordId> Collection::updateDocument(OperationContext* txn,
const RecordId& oldLocation,
const Snapshotted<BSONObj>& oldDoc,
const BSONObj& newDoc,
bool enforceQuota,
bool indexesAffected,
OpDebug* debug,
oplogUpdateEntryArgs& args) {
{
auto status = checkValidation(txn, newDoc);
if (!status.isOK()) {
if (_validationLevel == STRICT_V) {
return status;
}
// moderate means we have to check the old doc
auto oldDocStatus = checkValidation(txn, oldDoc.value());
if (oldDocStatus.isOK()) {
// transitioning from good -> bad is not ok
return status;
}
// bad -> bad is ok in moderate mode
}
}
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IX));
invariant(oldDoc.snapshotId() == txn->recoveryUnit()->getSnapshotId());
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{txn->lockState(), ResourceId(RESOURCE_METADATA, _ns.ns()), MODE_X};
}
SnapshotId sid = txn->recoveryUnit()->getSnapshotId();
BSONElement oldId = oldDoc.value()["_id"];
if (!oldId.eoo() && (oldId != newDoc["_id"]))
return StatusWith<RecordId>(
ErrorCodes::InternalError, "in Collection::updateDocument _id mismatch", 13596);
// 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())
return {ErrorCodes::CannotGrowDocumentInCappedNamespace,
str::stream() << "Cannot change the size of a document in a capped collection: "
<< oldSize << " != " << newDoc.objsize()};
// At the end of this step, we will have a map of UpdateTickets, one per index, which
// represent the index updates needed to be done, based on the changes between oldDoc and
// newDoc.
OwnedPointerMap<IndexDescriptor*, UpdateTicket> updateTickets;
if (indexesAffected) {
IndexCatalog::IndexIterator ii = _indexCatalog.getIndexIterator(txn, true);
while (ii.more()) {
IndexDescriptor* descriptor = ii.next();
IndexCatalogEntry* entry = ii.catalogEntry(descriptor);
IndexAccessMethod* iam = ii.accessMethod(descriptor);
InsertDeleteOptions options;
options.logIfError = false;
options.dupsAllowed =
!(KeyPattern::isIdKeyPattern(descriptor->keyPattern()) || descriptor->unique()) ||
repl::getGlobalReplicationCoordinator()->shouldIgnoreUniqueIndex(descriptor);
UpdateTicket* updateTicket = new UpdateTicket();
updateTickets.mutableMap()[descriptor] = updateTicket;
Status ret = iam->validateUpdate(txn,
oldDoc.value(),
newDoc,
oldLocation,
options,
updateTicket,
entry->getFilterExpression());
if (!ret.isOK()) {
return StatusWith<RecordId>(ret);
}
}
}
// This can call back into Collection::recordStoreGoingToMove. If that happens, the old
// object is removed from all indexes.
StatusWith<RecordId> newLocation = _recordStore->updateRecord(
txn, oldLocation, newDoc.objdata(), newDoc.objsize(), _enforceQuota(enforceQuota), this);
if (!newLocation.isOK()) {
return newLocation;
}
// At this point, the old object may or may not still be indexed, depending on if it was
// moved. If the object did move, we need to add the new location to all indexes.
if (newLocation.getValue() != oldLocation) {
if (debug) {
if (debug->nmoved == -1) // default of -1 rather than 0
debug->nmoved = 1;
else
debug->nmoved += 1;
}
std::vector<BsonRecord> bsonRecords;
BsonRecord bsonRecord = {newLocation.getValue(), &newDoc};
bsonRecords.push_back(bsonRecord);
Status s = _indexCatalog.indexRecords(txn, bsonRecords);
if (!s.isOK())
return StatusWith<RecordId>(s);
invariant(sid == txn->recoveryUnit()->getSnapshotId());
args.ns = ns().ns();
getGlobalServiceContext()->getOpObserver()->onUpdate(txn, args);
return newLocation;
}
// Object did not move. We update each index with each respective UpdateTicket.
if (debug)
debug->keyUpdates = 0;
if (indexesAffected) {
IndexCatalog::IndexIterator ii = _indexCatalog.getIndexIterator(txn, true);
while (ii.more()) {
IndexDescriptor* descriptor = ii.next();
IndexAccessMethod* iam = ii.accessMethod(descriptor);
int64_t updatedKeys;
Status ret = iam->update(txn, *updateTickets.mutableMap()[descriptor], &updatedKeys);
if (!ret.isOK())
return StatusWith<RecordId>(ret);
if (debug)
debug->keyUpdates += updatedKeys;
}
}
invariant(sid == txn->recoveryUnit()->getSnapshotId());
args.ns = ns().ns();
getGlobalServiceContext()->getOpObserver()->onUpdate(txn, args);
return newLocation;
}
StatusWith<RecordId> Collection::updateDocument(OperationContext* txn,
const RecordId& oldLocation,
const Snapshotted<BSONObj>& oldDoc,
const BSONObj& newDoc,
bool enforceQuota,
bool indexesAffected,
OpDebug* debug,
oplogUpdateEntryArgs& args) {
{
auto status = checkValidation(txn, newDoc);
if (!status.isOK()) {
if (_validationLevel == STRICT_V) {
return status;
}
// moderate means we have to check the old doc
auto oldDocStatus = checkValidation(txn, oldDoc.value());
if (oldDocStatus.isOK()) {
// transitioning from good -> bad is not ok
return status;
}
// bad -> bad is ok in moderate mode
}
}
dassert(txn->lockState()->isCollectionLockedForMode(ns().toString(), MODE_IX));
invariant(oldDoc.snapshotId() == txn->recoveryUnit()->getSnapshotId());
SnapshotId sid = txn->recoveryUnit()->getSnapshotId();
BSONElement oldId = oldDoc.value()["_id"];
if (!oldId.eoo() && (oldId != newDoc["_id"]))
return StatusWith<RecordId>(
ErrorCodes::InternalError, "in Collection::updateDocument _id mismatch", 13596);
// At the end of this step, we will have a map of UpdateTickets, one per index, which
// represent the index updates needed to be done, based on the changes between oldDoc and
// newDoc.
OwnedPointerMap<IndexDescriptor*, UpdateTicket> updateTickets;
if (indexesAffected) {
IndexCatalog::IndexIterator ii = _indexCatalog.getIndexIterator(txn, true);
while (ii.more()) {
IndexDescriptor* descriptor = ii.next();
IndexCatalogEntry* entry = ii.catalogEntry(descriptor);
IndexAccessMethod* iam = ii.accessMethod(descriptor);
InsertDeleteOptions options;
options.logIfError = false;
options.dupsAllowed =
!(KeyPattern::isIdKeyPattern(descriptor->keyPattern()) || descriptor->unique()) ||
repl::getGlobalReplicationCoordinator()->shouldIgnoreUniqueIndex(descriptor);
UpdateTicket* updateTicket = new UpdateTicket();
updateTickets.mutableMap()[descriptor] = updateTicket;
Status ret = iam->validateUpdate(txn,
oldDoc.value(),
newDoc,
oldLocation,
options,
updateTicket,
entry->getFilterExpression());
if (!ret.isOK()) {
return StatusWith<RecordId>(ret);
}
}
}
// This can call back into Collection::recordStoreGoingToMove. If that happens, the old
// object is removed from all indexes.
StatusWith<RecordId> newLocation = _recordStore->updateRecord(
txn, oldLocation, newDoc.objdata(), newDoc.objsize(), _enforceQuota(enforceQuota), this);
if (!newLocation.isOK()) {
return newLocation;
}
// At this point, the old object may or may not still be indexed, depending on if it was
// moved. If the object did move, we need to add the new location to all indexes.
if (newLocation.getValue() != oldLocation) {
if (debug) {
if (debug->nmoved == -1) // default of -1 rather than 0
debug->nmoved = 1;
else
debug->nmoved += 1;
}
Status s = _indexCatalog.indexRecord(txn, newDoc, newLocation.getValue());
if (!s.isOK())
return StatusWith<RecordId>(s);
invariant(sid == txn->recoveryUnit()->getSnapshotId());
args.ns = ns().ns();
getGlobalServiceContext()->getOpObserver()->onUpdate(txn, args);
return newLocation;
}
// Object did not move. We update each index with each respective UpdateTicket.
if (debug)
debug->keyUpdates = 0;
if (indexesAffected) {
IndexCatalog::IndexIterator ii = _indexCatalog.getIndexIterator(txn, true);
while (ii.more()) {
IndexDescriptor* descriptor = ii.next();
IndexAccessMethod* iam = ii.accessMethod(descriptor);
int64_t updatedKeys;
Status ret = iam->update(txn, *updateTickets.mutableMap()[descriptor], &updatedKeys);
if (!ret.isOK())
return StatusWith<RecordId>(ret);
if (debug)
debug->keyUpdates += updatedKeys;
}
}
invariant(sid == txn->recoveryUnit()->getSnapshotId());
args.ns = ns().ns();
getGlobalServiceContext()->getOpObserver()->onUpdate(txn, args);
return newLocation;
}