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/**
* Copyright (C) 2020-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::kSharding
#include "mongo/platform/basic.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/catalog_raii.h"
#include "mongo/db/commands.h"
#include "mongo/db/dbdirectclient.h"
#include "mongo/db/s/collection_sharding_runtime.h"
#include "mongo/db/s/drop_collection_coordinator.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/db/transaction_participant.h"
#include "mongo/logv2/log.h"
#include "mongo/s/request_types/sharded_ddl_commands_gen.h"
namespace mongo {
namespace {
class ShardsvrDropCollectionParticipantCommand final
: public TypedCommand<ShardsvrDropCollectionParticipantCommand> {
public:
bool skipApiVersionCheck() const override {
// Internal command (server to server).
return true;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return Command::AllowedOnSecondary::kNever;
}
std::string help() const override {
return "Internal command, which is exported by secondary sharding servers. Do not call "
"directly. Participates in droping a collection.";
}
using Request = ShardsvrDropCollectionParticipant;
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);
opCtx->setAlwaysInterruptAtStepDownOrUp();
try {
DropCollectionCoordinator::dropCollectionLocally(opCtx, ns());
} catch (const ExceptionFor<ErrorCodes::NamespaceNotFound>&) {
LOGV2_DEBUG(5280920,
1,
"Namespace not found while trying to delete local collection",
"namespace"_attr = ns());
}
// The txnParticipant will only be missing when the command was sent from a coordinator
// running an old 5.0.0 binary that didn't attach a sessionId & txnNumber.
// TODO SERVER-60773: Once 6.0 has branched out, txnParticipant must always exist. Add a
// uassert for that.
auto txnParticipant = TransactionParticipant::get(opCtx);
if (txnParticipant) {
// Since no write that generated a retryable write oplog entry with this sessionId
// and txnNumber happened, we need to make a dummy write so that the session gets
// durably persisted on the oplog. This must be the last operation done on this
// command.
DBDirectClient client(opCtx);
client.update(NamespaceString::kServerConfigurationNamespace.ns(),
BSON("_id" << Request::kCommandName),
BSON("$inc" << BSON("count" << 1)),
true /* upsert */,
false /* multi */);
}
}
private:
NamespaceString ns() const override {
return request().getNamespace();
}
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));
}
};
} sharsvrdDropCollectionParticipantCommand;
} // namespace
} // namespace mongo
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