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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_CROSS_DEVICE_LOGGING_LOGGING_H_
#define COMPONENTS_CROSS_DEVICE_LOGGING_LOGGING_H_
#include <sstream>
#include <string_view>
#include "base/component_export.h"
#include "base/logging.h"
#include "components/cross_device/logging/log_buffer.h"
// Use the CD_LOG() macro for all logging related to Cross Device Features so
// the debug page can reflect all logs related to this feature in the internal
// debug WebUI (chrome://nearby-internals).
#define CD_LOG(severity, feature) \
CrossDeviceScopedLogMessage(std::string_view(__FILE__, std::size(__FILE__)), \
__LINE__, logging::LOGGING_##severity, feature) \
.stream()
// An intermediate object used by the CD_LOG macro, wrapping a
// logging::LogMessage instance. When this object is destroyed, the message will
// be logged with the standard logging system and also added to Nearby Sharing
// specific log buffer.
class COMPONENT_EXPORT(COMPONENTS_CROSS_DEVICE_LOGGING)
CrossDeviceScopedLogMessage {
public:
CrossDeviceScopedLogMessage(std::string_view file,
int line,
logging::LogSeverity severity,
Feature feature);
CrossDeviceScopedLogMessage(const CrossDeviceScopedLogMessage&) = delete;
CrossDeviceScopedLogMessage& operator=(const CrossDeviceScopedLogMessage&) =
delete;
~CrossDeviceScopedLogMessage();
std::ostream& stream() { return stream_; }
private:
const std::string_view file_;
Feature feature_;
int line_;
logging::LogSeverity severity_;
std::ostringstream stream_;
};
#endif // COMPONENTS_CROSS_DEVICE_LOGGING_LOGGING_H_
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