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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.
*/
#include "mongo/db/catalog/catalog_helper.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/catalog_raii.h"
#include "mongo/db/s/database_sharding_state.h"
#include "mongo/db/s/operation_sharding_state.h"
#include "mongo/db/s/sharding_migration_critical_section.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/s/stale_exception.h"
namespace mongo::catalog_helper {
void assertMatchingDbVersion(OperationContext* opCtx, const StringData& dbName) {
const auto receivedVersion = OperationShardingState::get(opCtx).getDbVersion(dbName);
if (!receivedVersion) {
return;
}
{
auto scopedDss = DatabaseShardingState::acquire(opCtx, dbName, DSSAcquisitionMode::kShared);
const auto critSecSignal = scopedDss->getCriticalSectionSignal(
opCtx->lockState()->isWriteLocked() ? ShardingMigrationCriticalSection::kWrite
: ShardingMigrationCriticalSection::kRead);
uassert(
StaleDbRoutingVersion(dbName.toString(), *receivedVersion, boost::none, critSecSignal),
str::stream() << "The critical section for the database " << dbName
<< " is acquired with reason: " << scopedDss->getCriticalSectionReason(),
!critSecSignal);
}
const auto wantedVersion = DatabaseHolder::get(opCtx)->getDbVersion(opCtx, dbName);
uassert(StaleDbRoutingVersion(dbName.toString(), *receivedVersion, boost::none),
str::stream() << "No cached info for the database " << dbName,
wantedVersion);
uassert(StaleDbRoutingVersion(dbName.toString(), *receivedVersion, *wantedVersion),
str::stream() << "Version mismatch for the database " << dbName,
*receivedVersion == *wantedVersion);
}
void assertIsPrimaryShardForDb(OperationContext* opCtx, const StringData& dbName) {
invariant(dbName != NamespaceString::kConfigDb);
uassert(ErrorCodes::IllegalOperation,
str::stream() << "Received request without the version for the database " << dbName,
OperationShardingState::get(opCtx).hasDbVersion());
// Recover the database's information if necessary (not cached or not matching).
AutoGetDb autoDb(opCtx, dbName, MODE_IS);
invariant(autoDb.getDb());
const auto primaryShardId = DatabaseHolder::get(opCtx)->getDbPrimary(opCtx, dbName).value();
const auto thisShardId = ShardingState::get(opCtx)->shardId();
uassert(ErrorCodes::IllegalOperation,
str::stream() << "This is not the primary shard for the database " << dbName
<< ". Expected: " << primaryShardId << " Actual: " << thisShardId,
primaryShardId == thisShardId);
}
} // namespace mongo::catalog_helper
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