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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::kCommand
#include "mongo/platform/basic.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/query/collation/collator_factory_interface.h"
#include "mongo/rpc/get_status_from_command_result.h"
#include "mongo/s/cluster_commands_helpers.h"
#include "mongo/s/grid.h"
namespace mongo {
namespace {
class CreateCmd : public BasicCommand {
public:
CreateCmd() : BasicCommand("create") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
bool adminOnly() const override {
return false;
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const override {
return CommandHelpers::parseNsCollectionRequired(dbname, cmdObj).ns();
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const override {
const NamespaceString nss(parseNs(dbname, cmdObj));
return AuthorizationSession::get(client)->checkAuthForCreate(nss, cmdObj, true);
}
void checkCollectionOptions(OperationContext* opCtx,
const NamespaceString& ns,
const CollectionOptions& options) {
auto dbName = ns.db();
auto dbInfo = uassertStatusOK(Grid::get(opCtx)->catalogCache()->getDatabase(opCtx, dbName));
BSONObjBuilder listCollCmd;
listCollCmd.append("listCollections", 1);
listCollCmd.append("filter", BSON("name" << ns.coll()));
auto response = executeCommandAgainstDatabasePrimary(
opCtx,
dbName,
dbInfo,
CommandHelpers::filterCommandRequestForPassthrough(listCollCmd.obj()),
ReadPreferenceSetting(ReadPreference::PrimaryOnly),
Shard::RetryPolicy::kIdempotent);
uassertStatusOK(response.swResponse);
auto responseData = response.swResponse.getValue().data;
auto listCollectionsStatus = mongo::getStatusFromCommandResult(responseData);
uassertStatusOK(listCollectionsStatus);
auto cursorObj = responseData["cursor"].Obj();
auto collections = cursorObj["firstBatch"].Obj();
BSONObjIterator collIter(collections);
uassert(ErrorCodes::NamespaceNotFound,
str::stream() << "cannot find ns: " << ns.ns(),
collIter.more());
auto collectionDetails = collIter.next();
CollectionOptions actualOptions =
uassertStatusOK(CollectionOptions::parse(collectionDetails["options"].Obj()));
// TODO: SERVER-33048 check idIndex field
uassert(ErrorCodes::NamespaceExists,
str::stream() << "ns: " << ns.ns() << " already exists with different options: "
<< actualOptions.toBSON(),
options.matchesStorageOptions(
actualOptions, CollatorFactoryInterface::get(opCtx->getServiceContext())));
}
bool run(OperationContext* opCtx,
const std::string& dbName,
const BSONObj& cmdObj,
BSONObjBuilder& result) override {
const NamespaceString nss(parseNs(dbName, cmdObj));
createShardDatabase(opCtx, dbName);
uassert(ErrorCodes::InvalidOptions,
"specify size:<n> when capped is true",
!cmdObj["capped"].trueValue() || cmdObj["size"].isNumber());
uassert(ErrorCodes::InvalidOptions,
"the 'temp' field is an invalid option",
!cmdObj.hasField("temp"));
// Manually forward the create collection command to the primary shard.
const auto dbInfo =
uassertStatusOK(Grid::get(opCtx)->catalogCache()->getDatabase(opCtx, dbName));
auto response = executeCommandAgainstDatabasePrimary(
opCtx,
dbName,
dbInfo,
applyReadWriteConcern(
opCtx, this, CommandHelpers::filterCommandRequestForPassthrough(cmdObj)),
ReadPreferenceSetting(ReadPreference::PrimaryOnly),
Shard::RetryPolicy::kIdempotent);
uassertStatusOK(response.swResponse);
const auto createStatus =
mongo::getStatusFromCommandResult(response.swResponse.getValue().data);
if (createStatus == ErrorCodes::NamespaceExists && !opCtx->inMultiDocumentTransaction()) {
// NamespaceExists will cause multi-document transactions to implicitly abort, so
// mongos should surface this error to the client.
CollectionOptions options = uassertStatusOK(CollectionOptions::parse(cmdObj));
checkCollectionOptions(opCtx, nss, options);
} else {
uassertStatusOK(createStatus);
}
uassertStatusOK(
getWriteConcernStatusFromCommandResult(response.swResponse.getValue().data));
return true;
}
} createCmd;
} // namespace
} // namespace mongo
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