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/**
* Copyright (C) 2021-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_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kCommand
#include "mongo/platform/basic.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/s/dist_lock_manager.h"
#include "mongo/db/s/reshard_collection_coordinator.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/s/request_types/sharded_ddl_commands_gen.h"
namespace mongo {
namespace {
class ShardsvrReshardCollectionCommand final
: public TypedCommand<ShardsvrReshardCollectionCommand> {
public:
using Request = ShardsvrReshardCollection;
std::string help() const override {
return "Internal command. Do not call directly. Reshards a collection.";
}
bool adminOnly() const override {
return true;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
class Invocation final : public InvocationBase {
public:
using InvocationBase::InvocationBase;
void typedRun(OperationContext* opCtx) {
uassertStatusOK(ShardingState::get(opCtx)->canAcceptShardedCommands());
uassert(ErrorCodes::InvalidOptions,
str::stream() << Request::kCommandName
<< " must be called with majority writeConcern, got "
<< opCtx->getWriteConcern().wMode,
opCtx->getWriteConcern().wMode == WriteConcernOptions::kMajority);
// (Generic FCV reference): To run this command and ensure the consistency of the
// metadata we need to make sure we are on a stable state.
uassert(
ErrorCodes::CommandNotSupported,
"Resharding is not supported for this version, please update the FCV to latest.",
!serverGlobalParams.featureCompatibility.isUpgradingOrDowngrading());
DistLockManager::ScopedDistLock dbDistLock(
uassertStatusOK(DistLockManager::get(opCtx)->lock(
opCtx, ns().db(), "reshardCollection", DistLockManager::kDefaultLockTimeout)));
DistLockManager::ScopedDistLock collDistLock(
uassertStatusOK(DistLockManager::get(opCtx)->lock(
opCtx, ns().ns(), "reshardCollection", DistLockManager::kDefaultLockTimeout)));
auto reshardCollectionCoordinator =
std::make_shared<ReshardCollectionCoordinator>(opCtx, request());
reshardCollectionCoordinator->run(opCtx).get(opCtx);
}
private:
NamespaceString ns() const override {
return request().getCommandParameter();
}
bool supportsWriteConcern() const override {
return true;
}
void doCheckAuthorization(OperationContext* opCtx) const override {
uassert(ErrorCodes::Unauthorized,
"Unauthorized",
AuthorizationSession::get(opCtx->getClient())
->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
ActionType::internal));
}
};
} shardsvrReshardCollectionCommand;
} // namespace
} // namespace mongo
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