std::unique_ptr<LiteParsedDocumentSourceForeignCollections> DocumentSourceOut::liteParse(
const AggregationRequest& request, const BSONElement& spec) {
uassert(ErrorCodes::TypeMismatch,
str::stream() << "$out stage requires a string argument, but found "
<< typeName(spec.type()),
spec.type() == BSONType::String);
NamespaceString targetNss(request.getNamespaceString().db(), spec.valueStringData());
uassert(ErrorCodes::InvalidNamespace,
str::stream() << "Invalid $out target namespace, " << targetNss.ns(),
targetNss.isValid());
ActionSet actions{ActionType::remove, ActionType::insert};
if (request.shouldBypassDocumentValidation()) {
actions.addAction(ActionType::bypassDocumentValidation);
}
PrivilegeVector privileges{Privilege(ResourcePattern::forExactNamespace(targetNss), actions)};
return stdx::make_unique<LiteParsedDocumentSourceForeignCollections>(std::move(targetNss),
std::move(privileges));
}
Status renameCollectionForApplyOps(OperationContext* opCtx,
const std::string& dbName,
const BSONElement& ui,
const BSONObj& cmd) {
const auto sourceNsElt = cmd.firstElement();
const auto targetNsElt = cmd["to"];
const auto dropSourceElt = cmd["dropSource"];
uassert(ErrorCodes::TypeMismatch,
"'renameCollection' must be of type String",
sourceNsElt.type() == BSONType::String);
uassert(ErrorCodes::TypeMismatch,
"'to' must be of type String",
targetNsElt.type() == BSONType::String);
NamespaceString sourceNss(sourceNsElt.valueStringData());
NamespaceString targetNss(targetNsElt.valueStringData());
NamespaceString uiNss(getNamespaceFromUUID(opCtx, ui));
NamespaceString dropSourceNss(getNamespaceFromUUID(opCtx, dropSourceElt));
// If the UUID we're targeting already exists, rename from there no matter what.
// When dropSource is specified, the rename is accross databases. In that case, ui indicates
// the UUID of the new target collection and the dropSourceNss specifies the sourceNss.
if (!uiNss.isEmpty()) {
sourceNss = uiNss;
// The cross-database rename was already done and just needs a local rename, but we may
// still need to actually remove the source collection.
auto dropSourceNss = getNamespaceFromUUID(opCtx, dropSourceElt);
if (!dropSourceNss.isEmpty()) {
BSONObjBuilder unusedBuilder;
dropCollection(opCtx,
dropSourceNss,
unusedBuilder,
repl::OpTime(),
DropCollectionSystemCollectionMode::kAllowSystemCollectionDrops)
.ignore();
}
} else if (!dropSourceNss.isEmpty()) {
sourceNss = dropSourceNss;
} else {
// When replaying cross-database renames, both source and target collections may no longer
// exist. Attempting a rename anyway could result in removing a newer collection of the
// same name.
uassert(ErrorCodes::NamespaceNotFound,
str::stream() << "source collection (UUID "
<< uassertStatusOK(UUID::parse(dropSourceElt))
<< ") for rename to "
<< targetNss.ns()
<< " no longer exists",
!dropSourceElt);
}
OptionalCollectionUUID targetUUID;
if (!ui.eoo())
targetUUID = uassertStatusOK(UUID::parse(ui));
return renameCollectionCommon(opCtx,
sourceNss,
targetNss,
targetUUID,
cmd["dropTarget"].trueValue(),
cmd["stayTemp"].trueValue());
}
