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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/rpc/get_status_from_command_result.h"
#include "mongo/s/cluster_commands_helpers.h"
#include "mongo/s/grid.h"
namespace mongo {
namespace {
class SplitVectorCmd : public BasicCommand {
public:
SplitVectorCmd() : BasicCommand("splitVector") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const override {
return CommandHelpers::parseNsFullyQualified(cmdObj);
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const override {
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(NamespaceString(parseNs(dbname, cmdObj))),
ActionType::splitVector)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
bool run(OperationContext* opCtx,
const std::string& dbName,
const BSONObj& cmdObj,
BSONObjBuilder& result) override {
const NamespaceString nss(parseNs(dbName, cmdObj));
uassert(ErrorCodes::IllegalOperation,
"Performing splitVector across dbs isn't supported via mongos",
nss.db() == dbName);
const auto cm =
uassertStatusOK(Grid::get(opCtx)->catalogCache()->getCollectionRoutingInfo(opCtx, nss));
uassert(ErrorCodes::IllegalOperation,
str::stream() << "can't do command: " << getName() << " on sharded collection",
!cm.isSharded());
// Here, we first filter the command before appending an UNSHARDED shardVersion, because
// "shardVersion" is one of the fields that gets filtered out.
BSONObj filteredCmdObj(applyReadWriteConcern(
opCtx, this, CommandHelpers::filterCommandRequestForPassthrough(cmdObj)));
BSONObj filteredCmdObjWithVersion(
appendShardVersion(filteredCmdObj, ChunkVersion::UNSHARDED()));
auto shard =
uassertStatusOK(Grid::get(opCtx)->shardRegistry()->getShard(opCtx, cm.dbPrimary()));
auto commandResponse = uassertStatusOK(shard->runCommandWithFixedRetryAttempts(
opCtx,
ReadPreferenceSetting::get(opCtx),
dbName,
cm.dbPrimary() == ShardId::kConfigServerId ? filteredCmdObj : filteredCmdObjWithVersion,
Shard::RetryPolicy::kIdempotent));
uassert(ErrorCodes::IllegalOperation,
str::stream() << "can't do command: " << getName() << " on a sharded collection",
!ErrorCodes::isStaleShardVersionError(commandResponse.commandStatus.code()));
uassertStatusOK(commandResponse.commandStatus);
if (!commandResponse.writeConcernStatus.isOK()) {
appendWriteConcernErrorToCmdResponse(
cm.dbPrimary(), commandResponse.response["writeConcernError"], result);
}
result.appendElementsUnique(
CommandHelpers::filterCommandReplyForPassthrough(std::move(commandResponse.response)));
return true;
}
} splitVectorCmd;
} // namespace
} // namespace mongo
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