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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/auth/authorization_session.h"
#include "mongo/db/catalog/collection_catalog.h"
#include "mongo/db/commands.h"
#include "mongo/db/curop.h"
#include "mongo/db/s/database_sharding_state.h"
#include "mongo/db/s/dist_lock_manager.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/db/timeseries/timeseries_commands_conversion_helper.h"
#include "mongo/logv2/log.h"
#include "mongo/s/chunk_manager_targeter.h"
#include "mongo/s/cluster_commands_helpers.h"
#include "mongo/s/grid.h"
#include "mongo/s/request_types/sharded_ddl_commands_gen.h"
#include "mongo/s/stale_shard_version_helpers.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding
namespace mongo {
namespace {
struct StaleConfigRetryState {
std::set<ShardId> shardsWithSuccessResponses;
std::vector<AsyncRequestsSender::Response> shardSuccessResponses;
};
void updateStateForStaleConfigRetry(OperationContext* opCtx,
const RawResponsesResult& response,
StaleConfigRetryState* retryState) {
std::set<ShardId> okShardIds;
std::set_union(response.shardsWithSuccessResponses.begin(),
response.shardsWithSuccessResponses.end(),
retryState->shardsWithSuccessResponses.begin(),
retryState->shardsWithSuccessResponses.end(),
std::inserter(okShardIds, okShardIds.begin()));
retryState->shardsWithSuccessResponses = std::move(okShardIds);
retryState->shardSuccessResponses = std::move(response.successResponses);
}
class ShardsvrDropIndexesCommand final : public TypedCommand<ShardsvrDropIndexesCommand> {
public:
using Request = ShardsvrDropIndexes;
bool skipApiVersionCheck() const override {
// Internal command (server to server).
return true;
}
std::string help() const override {
return "Internal command. Do not call directly. Drops indexes.";
}
bool adminOnly() const override {
return false;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
class Invocation final : public InvocationBase {
public:
using InvocationBase::InvocationBase;
/**
* Intermediate wrapper to interface with ReplyBuilderInterface.
*/
class Response {
public:
Response(BSONObj obj) : _obj(std::move(obj)) {}
void serialize(BSONObjBuilder* builder) const {
builder->appendElements(_obj);
}
private:
const BSONObj _obj;
};
Response typedRun(OperationContext* opCtx);
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));
}
};
} shardsvrDropIndexesCommand;
ShardsvrDropIndexesCommand::Invocation::Response ShardsvrDropIndexesCommand::Invocation::typedRun(
OperationContext* opCtx) {
uassertStatusOK(ShardingState::get(opCtx)->canAcceptShardedCommands());
CommandHelpers::uassertCommandRunWithMajority(Request::kCommandName, opCtx->getWriteConcern());
// Since this operation is not directly writing locally we need to force its db profile level
// increase in order to be logged in "<db>.system.profile".
CurOp::get(opCtx)->raiseDbProfileLevel(
CollectionCatalog::get(opCtx)->getDatabaseProfileLevel(ns().db()));
DropIndexes dropIdxCmd(ns());
dropIdxCmd.setDropIndexesRequest(request().getDropIndexesRequest());
const auto lockTimeout = [&]() -> Milliseconds {
if (auto sfp = globalFailPointRegistry().find("overrideDDLLockTimeout")->scoped();
MONGO_unlikely(sfp.isActive())) {
if (auto timeoutElem = sfp.getData()["timeoutMillisecs"]; timeoutElem.ok()) {
const auto timeoutMillisecs = Milliseconds(timeoutElem.safeNumberLong());
LOGV2(649100, "Overriding DDL lock timeout", "timeout"_attr = timeoutMillisecs);
return timeoutMillisecs;
}
}
return DistLockManager::kDefaultLockTimeout;
}();
auto distLockManager = DistLockManager::get(opCtx);
auto dbLocalLock = distLockManager->lockDirectLocally(opCtx, ns().db(), lockTimeout);
// Check under the dbLock if this is still the primary shard for the database
DatabaseShardingState::checkIsPrimaryShardForDb(opCtx, ns().db());
auto nsLocalLock = distLockManager->lockDirectLocally(opCtx, ns().ns(), lockTimeout);
StaleConfigRetryState retryState;
return shardVersionRetry(opCtx, Grid::get(opCtx)->catalogCache(), ns(), "dropIndexes", [&] {
// If the collection is sharded, we target only the primary shard and the shards that own
// chunks for the collection.
auto targeter = ChunkManagerTargeter(opCtx, ns());
auto routingInfo = targeter.getRoutingInfo();
auto cmdToBeSent = dropIdxCmd.toBSON({});
if (targeter.timeseriesNamespaceNeedsRewrite(ns())) {
cmdToBeSent =
timeseries::makeTimeseriesCommand(cmdToBeSent,
ns(),
DropIndexes::kCommandName,
DropIndexes::kIsTimeseriesNamespaceFieldName);
}
cmdToBeSent = CommandHelpers::filterCommandRequestForPassthrough(
CommandHelpers::appendMajorityWriteConcern(cmdToBeSent));
auto shardResponses =
scatterGatherVersionedTargetByRoutingTableNoThrowOnStaleShardVersionErrors(
opCtx,
ns().db(),
targeter.getNS(),
routingInfo,
retryState.shardsWithSuccessResponses,
applyReadWriteConcern(
opCtx, this, CommandHelpers::filterCommandRequestForPassthrough(cmdToBeSent)),
ReadPreferenceSetting::get(opCtx),
Shard::RetryPolicy::kNotIdempotent,
BSONObj() /* query */,
BSONObj() /* collation */);
// Append responses we've received from previous retries of this operation due to a stale
// config error.
shardResponses.insert(shardResponses.end(),
retryState.shardSuccessResponses.begin(),
retryState.shardSuccessResponses.end());
std::string errmsg;
BSONObjBuilder output;
const auto aggregateResponse =
appendRawResponses(opCtx, &errmsg, &output, std::move(shardResponses));
// If we have a stale config error, update the success shards for the upcoming retry.
if (!aggregateResponse.responseOK && aggregateResponse.firstStaleConfigError) {
updateStateForStaleConfigRetry(opCtx, aggregateResponse, &retryState);
uassertStatusOK(*aggregateResponse.firstStaleConfigError);
}
CommandHelpers::appendSimpleCommandStatus(output, aggregateResponse.responseOK, errmsg);
return Response(output.obj());
});
}
} // namespace
} // namespace mongo
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