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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::kCommand
#include "mongo/platform/basic.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/logv2/log.h"
#include "mongo/rpc/get_status_from_command_result.h"
#include "mongo/s/catalog_cache.h"
#include "mongo/s/cluster_commands_helpers.h"
#include "mongo/s/grid.h"
#include "mongo/s/request_types/reshard_collection_gen.h"
#include "mongo/s/request_types/sharded_ddl_commands_gen.h"
#include "mongo/s/resharding/resharding_feature_flag_gen.h"
namespace mongo {
namespace {
class ReshardCollectionCmd : public TypedCommand<ReshardCollectionCmd> {
public:
using Request = ReshardCollection;
class Invocation final : public InvocationBase {
public:
using InvocationBase::InvocationBase;
void typedRun(OperationContext* opCtx) {
const auto& nss = ns();
ShardsvrReshardCollection shardsvrReshardCollection(nss, request().getKey());
shardsvrReshardCollection.setDbName(request().getDbName());
shardsvrReshardCollection.setUnique(request().getUnique());
shardsvrReshardCollection.setCollation(request().getCollation());
shardsvrReshardCollection.set_presetReshardedChunks(
request().get_presetReshardedChunks());
shardsvrReshardCollection.setZones(request().getZones());
shardsvrReshardCollection.setNumInitialChunks(request().getNumInitialChunks());
auto catalogCache = Grid::get(opCtx)->catalogCache();
const auto dbInfo = uassertStatusOK(catalogCache->getDatabase(opCtx, nss.db()));
auto cmdResponse = executeCommandAgainstDatabasePrimary(
opCtx,
"admin",
dbInfo,
CommandHelpers::appendMajorityWriteConcern(shardsvrReshardCollection.toBSON({}),
opCtx->getWriteConcern()),
ReadPreferenceSetting(ReadPreference::PrimaryOnly),
Shard::RetryPolicy::kIdempotent);
const auto remoteResponse = uassertStatusOK(cmdResponse.swResponse);
uassertStatusOK(getStatusFromCommandResult(remoteResponse.data));
}
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::forExactNamespace(ns()),
ActionType::reshardCollection));
}
};
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
bool adminOnly() const override {
return true;
}
std::string help() const override {
return "Reshard an already sharded collection on a new shard key.";
}
};
MONGO_REGISTER_FEATURE_FLAGGED_COMMAND(ReshardCollectionCmd, resharding::gFeatureFlagResharding);
} // namespace
} // namespace mongo
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