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/**
* Copyright (C) 2022-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.
*/
#pragma once
#include "mongo/db/s/resharding/coordinator_document_gen.h"
#include "mongo/db/s/resharding/donor_document_gen.h"
#include "mongo/db/s/resharding/recipient_document_gen.h"
#include "mongo/db/s/sharding_data_transform_instance_metrics.h"
#include <type_traits>
namespace mongo {
namespace resharding_metrics {
template <class T>
inline constexpr bool isStateDocument =
std::disjunction_v<std::is_same<T, ReshardingRecipientDocument>,
std::is_same<T, ReshardingCoordinatorDocument>,
std::is_same<T, ReshardingDonorDocument>>;
template <typename T>
inline constexpr bool isState = std::disjunction_v<std::is_same<T, RecipientStateEnum>,
std::is_same<T, CoordinatorStateEnum>,
std::is_same<T, DonorStateEnum>>;
template <typename T>
inline constexpr auto getState(const T& document) {
static_assert(isStateDocument<T>);
if constexpr (std::is_same_v<T, ReshardingCoordinatorDocument>) {
return document.getState();
} else {
return document.getMutableState().getState();
}
}
template <typename T>
inline constexpr ShardingDataTransformMetrics::Role getRoleForStateDocument() {
static_assert(isStateDocument<T>);
using Role = ShardingDataTransformMetrics::Role;
if constexpr (std::is_same_v<T, ReshardingCoordinatorDocument>) {
return Role::kCoordinator;
} else if constexpr (std::is_same_v<T, ReshardingDonorDocument>) {
return Role::kDonor;
} else if constexpr (std::is_same_v<T, ReshardingRecipientDocument>) {
return Role::kRecipient;
}
MONGO_UNREACHABLE;
}
void onCriticalSectionError(OperationContext* opCtx, const StaleConfigInfo& info) noexcept;
template <typename T>
std::string getMetricsPrefix() {
static_assert(isStateDocument<T>);
return T::kMetricsFieldName + ".";
}
template <typename T>
std::string getIntervalPrefix(const StringData& intervalFieldName) {
return getMetricsPrefix<T>() + intervalFieldName + ".";
}
template <typename T>
std::string getIntervalStartFieldName(const StringData& intervalFieldName) {
return getIntervalPrefix<T>(intervalFieldName) + ReshardingMetricsTimeInterval::kStartFieldName;
}
template <typename T>
std::string getIntervalEndFieldName(const StringData& intervalFieldName) {
return getIntervalPrefix<T>(intervalFieldName) + ReshardingMetricsTimeInterval::kStopFieldName;
}
} // namespace resharding_metrics
} // namespace mongo
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