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/**
* Copyright (C) 2018-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_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding
#include "mongo/platform/basic.h"
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/db/commands.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/repl/read_concern_args.h"
#include "mongo/db/s/config/sharding_catalog_manager.h"
#include "mongo/s/grid.h"
#include "mongo/s/request_types/split_chunk_request_type.h"
#include "mongo/util/log.h"
#include "mongo/util/str.h"
namespace mongo {
namespace {
using std::string;
/**
* Internal sharding command run on config servers to split a chunk.
*
* Format:
* {
* _configsvrCommitChunkSplit: <string namespace>,
* collEpoch: <OID epoch>,
* min: <BSONObj chunkToSplitMin>,
* max: <BSONObj chunkToSplitMax>,
* splitPoints: [<BSONObj key>, ...],
* shard: <string shard>,
* writeConcern: <BSONObj>
* }
*/
class ConfigSvrSplitChunkCommand : public BasicCommand {
public:
ConfigSvrSplitChunkCommand() : BasicCommand("_configsvrCommitChunkSplit") {}
std::string help() const override {
return "Internal command, which is sent by a shard to the sharding config server. Do "
"not call directly. Receives, validates, and processes a SplitChunkRequest.";
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
bool adminOnly() const override {
return true;
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const override {
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forClusterResource(), ActionType::internal)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const override {
return CommandHelpers::parseNsFullyQualified(cmdObj);
}
bool run(OperationContext* opCtx,
const std::string& dbName,
const BSONObj& cmdObj,
BSONObjBuilder& result) override {
uassert(ErrorCodes::IllegalOperation,
"_configsvrCommitChunkSplit can only be run on config servers",
serverGlobalParams.clusterRole == ClusterRole::ConfigServer);
// Set the operation context read concern level to local for reads into the config database.
repl::ReadConcernArgs::get(opCtx) =
repl::ReadConcernArgs(repl::ReadConcernLevel::kLocalReadConcern);
auto parsedRequest = uassertStatusOK(SplitChunkRequest::parseFromConfigCommand(cmdObj));
Status splitChunkResult =
ShardingCatalogManager::get(opCtx)->commitChunkSplit(opCtx,
parsedRequest.getNamespace(),
parsedRequest.getEpoch(),
parsedRequest.getChunkRange(),
parsedRequest.getSplitPoints(),
parsedRequest.getShardName());
uassertStatusOK(splitChunkResult);
return true;
}
} configsvrSplitChunkCmd;
} // namespace
} // namespace mongo
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