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/**
* Copyright (C) 2022-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.
*/
#pragma once
#include "mongo/db/commands.h"
#include "mongo/db/commands/txn_cmds_gen.h"
#include "mongo/db/transaction_validation.h"
#include "mongo/rpc/get_status_from_command_result.h"
#include "mongo/s/cluster_commands_helpers.h"
#include "mongo/s/transaction_router.h"
namespace mongo {
namespace {
/**
* Implements the abortTransaction command for a router.
*/
template <typename Impl>
class ClusterAbortTransactionCmdBase
: public BasicCommandWithRequestParser<ClusterAbortTransactionCmdBase<Impl>> {
public:
ClusterAbortTransactionCmdBase()
: BasicCommandWithRequestParser<ClusterAbortTransactionCmdBase<Impl>>(Impl::kName) {}
using Request = AbortTransaction;
using Reply = OkReply;
using BaseType = BasicCommandWithRequestParser<ClusterAbortTransactionCmdBase<Impl>>;
using RequestParser =
typename BasicCommandWithRequestParser<ClusterAbortTransactionCmdBase<Impl>>::RequestParser;
void validateResult(const BSONObj& resultObj) final {
auto ctx = IDLParserContext("AbortReply");
if (!BaseType::checkIsErrorStatus(resultObj, ctx)) {
// Will throw if the result doesn't match the abortReply.
Reply::parse(ctx, resultObj);
}
}
const std::set<std::string>& apiVersions() const {
return Impl::getApiVersions();
}
BasicCommand::AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return BasicCommand::AllowedOnSecondary::kAlways;
}
bool adminOnly() const override {
return true;
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
ReadConcernSupportResult supportsReadConcern(const BSONObj& cmdObj,
repl::ReadConcernLevel level,
bool isImplicitDefault) const override {
static const Status kOnlyTransactionsReadConcernsSupported{
ErrorCodes::InvalidOptions, "only read concerns valid in transactions are supported"};
static const Status kDefaultReadConcernNotPermitted{ErrorCodes::InvalidOptions,
"default read concern not permitted"};
// abortTransaction commences running inside a transaction (even though the transaction will
// be ended by the time it completes). Therefore it needs to accept any readConcern which
// is valid within a transaction. However it is not appropriate to apply the default
// readConcern, since the readConcern of the transaction (set by the first operation) is
// what must apply.
return {{!isReadConcernLevelAllowedInTransaction(level),
kOnlyTransactionsReadConcernsSupported},
{kDefaultReadConcernNotPermitted}};
}
std::string help() const override {
return "Aborts a transaction";
}
Status checkAuthForOperation(OperationContext* opCtx,
const DatabaseName&,
const BSONObj&) const override {
return Impl::checkAuthForOperation(opCtx);
}
bool isTransactionCommand() const final {
return true;
}
bool allowedInTransactions() const final {
return true;
}
bool runWithRequestParser(OperationContext* opCtx,
const DatabaseName& dbName,
const BSONObj& cmdObj,
const RequestParser& requestParser,
BSONObjBuilder& result) final {
Impl::checkCanRunHere(opCtx);
auto txnRouter = TransactionRouter::get(opCtx);
uassert(ErrorCodes::InvalidOptions,
"abortTransaction can only be run within a session",
txnRouter);
auto abortRes = txnRouter.abortTransaction(opCtx);
CommandHelpers::filterCommandReplyForPassthrough(abortRes, &result);
return true;
}
const AuthorizationContract* getAuthorizationContract() const final {
return &::mongo::AbortTransaction::kAuthorizationContract;
}
};
} // namespace
} // namespace mongo
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