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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.
*/
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/s/config/sharding_catalog_manager.h"
#include "mongo/s/request_types/merge_chunk_request_gen.h"
namespace mongo {
namespace {
/**
* Internal sharding command run on config servers to merge a set of chunks.
*
* Format:
* {
* _configsvrCommitChunksMerge: <string namespace>,
* collEpoch: <OID epoch>,
* lowerBound: <BSONObj minKey>,
* upperBound: <BSONObj maxKey>,
* shard: <string shard>,
* writeConcern: <BSONObj>
* }
*/
class ConfigSvrMergeChunksCommand : public TypedCommand<ConfigSvrMergeChunksCommand> {
public:
using Request = ConfigSvrMergeChunks;
bool skipApiVersionCheck() const override {
// Internal command (server to server).
return true;
}
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 ConfigSvrMergeChunks";
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
bool adminOnly() const override {
return true;
}
class Invocation final : public InvocationBase {
public:
using InvocationBase::InvocationBase;
ConfigSvrMergeResponse typedRun(OperationContext* opCtx) {
uassert(ErrorCodes::IllegalOperation,
"_configsvrCommitChunksMerge can only be run on config servers",
serverGlobalParams.clusterRole == ClusterRole::ConfigServer);
uassert(ErrorCodes::InvalidNamespace,
"invalid namespace specified for request",
ns().isValid());
// Set the operation context read concern level to local for reads into the config
// database.
repl::ReadConcernArgs::get(opCtx) =
repl::ReadConcernArgs(repl::ReadConcernLevel::kLocalReadConcern);
const auto shardAndCollVers = uassertStatusOK(
ShardingCatalogManager::get(opCtx)->commitChunksMerge(opCtx,
ns(),
request().getEpoch(),
request().getTimestamp(),
request().getCollectionUUID(),
request().getChunkRange(),
request().getShard(),
request().getValidAfter()));
return ConfigSvrMergeResponse{shardAndCollVers.shardVersion};
}
private:
NamespaceString ns() const override {
return request().getCommandParameter();
}
bool supportsWriteConcern() const override {
return true;
}
void doCheckAuthorization(OperationContext* opCtx) const override {
if (!AuthorizationSession::get(opCtx->getClient())
->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
ActionType::internal)) {
uasserted(ErrorCodes::Unauthorized, "Unauthorized");
}
}
};
} configsvrMergeChunksCmd;
} // namespace
} // namespace mongo
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