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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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/audit.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/dbdirectclient.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/s/add_shard_cmd_gen.h"
#include "mongo/db/s/add_shard_util.h"
#include "mongo/rpc/get_status_from_command_result.h"
#include "mongo/s/balancer_configuration.h"
#include "mongo/s/grid.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding
namespace mongo {
namespace {
/**
* Internal sharding command run on mongod to initialize itself as a shard in the cluster.
*/
class AddShardCommand : public TypedCommand<AddShardCommand> {
public:
using Request = AddShard;
class Invocation final : public InvocationBase {
public:
using InvocationBase::InvocationBase;
void typedRun(OperationContext* opCtx) {
uassert(50876,
"Cannot run addShard on a node started without --shardsvr",
serverGlobalParams.clusterRole.has(ClusterRole::ShardServer));
tassert(5624104,
"Cannot run addShard on a node that contains customized getLastErrorDefaults, "
"which has been deprecated and is now ignored. Use setDefaultRWConcern instead "
"to set a cluster-wide default writeConcern.",
!repl::ReplicationCoordinator::get(opCtx)
->getConfig()
.containsCustomizedGetLastErrorDefaults());
auto addShardCmd = request();
auto shardIdUpsertCmd = add_shard_util::createShardIdentityUpsertForAddShard(
addShardCmd, ShardingCatalogClient::kMajorityWriteConcern);
DBDirectClient localClient(opCtx);
BSONObj res;
localClient.runCommand(DatabaseName::kAdmin, shardIdUpsertCmd, res);
uassertStatusOK(getStatusFromWriteCommandReply(res));
const auto balancerConfig = Grid::get(opCtx)->getBalancerConfiguration();
invariant(balancerConfig);
// Ensure we have the most up-to-date balancer configuration
uassertStatusOK(balancerConfig->refreshAndCheck(opCtx));
}
private:
bool supportsWriteConcern() const override {
return false;
}
// The command parameter happens to be string so it's historically been interpreted
// by parseNs as a collection. Continuing to do so here for unexamined compatibility.
NamespaceString ns() const override {
return NamespaceString(request().getDbName());
}
void doCheckAuthorization(OperationContext* opCtx) const override {
uassert(ErrorCodes::Unauthorized,
"Unauthorized",
AuthorizationSession::get(opCtx->getClient())
->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
ActionType::internal));
}
};
bool skipApiVersionCheck() const override {
// Internal command (server to server).
return true;
}
std::string help() const override {
return "Internal command, which is exported by shards. Do not call "
"directly. Adds a new shard to a cluster.";
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
bool adminOnly() const override {
return true;
}
} addShardCmd;
} // namespace
} // namespace mongo
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