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/**
* Copyright (C) 2020-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 <utility>
#include "mongo/base/string_data.h"
#include "mongo/logv2/log_attr.h"
#include "mongo/logv2/log_detail.h"
namespace mongo {
namespace logv2 {
namespace detail {
// We want to provide unique names even though we are not using the names.
template <std::size_t I>
inline constexpr char digit = "0123456789"[I];
template <std::size_t N>
inline constexpr const char attrName[4] = {'_', digit<(N / 10) % 10>, digit<N % 10>, '\0'};
template <std::size_t... Is, typename... Args>
auto argAttrs_(std::index_sequence<Is...>, const Args&... args) {
return makeAttributeStorage((AttrUdl{attrName<Is>} = args)...);
}
template <typename... Args>
auto argAttrs(const Args&... args) {
return argAttrs_(std::index_sequence_for<Args...>{}, args...);
}
} // namespace detail
/**
* Prototype-only unstructured logging, not allowed to commit to master
*
* Instead of named attributes as arguments, it accepts loggable types directly.
* Will emit a log with a single formatted string as "msg", and no attributes.
*
* Ex:
* #include "mongo/logv2/log_debug.h"
* namespace mongo {
* void f(int x, double y) {
* logd("f called with x={}, y={}", x, y);
* }
* } // namespace mongo
*/
template <typename... Args>
void logd(StringData message, const Args&... args) { // NOLINT
doUnstructuredLogImpl(LogSeverity::Log(), // NOLINT
LogOptions{LogComponent::kDefault},
message,
detail::argAttrs(args...));
}
} // namespace logv2
using logv2::logd; // NOLINT
} // namespace mongo
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