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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "opentelemetry/logs/log_record.h"
#include "opentelemetry/logs/logger.h"
#include "opentelemetry/logs/logger_type_traits.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/nostd/string_view.h"
#include "opentelemetry/nostd/unique_ptr.h"
#include "opentelemetry/version.h"
OPENTELEMETRY_BEGIN_NAMESPACE
namespace logs
{
#if OPENTELEMETRY_ABI_VERSION_NO < 2
/**
* Handles event log record creation.
* @deprecated
**/
class EventLogger
{
public:
EventLogger() = default;
EventLogger(const EventLogger &) = default;
EventLogger(EventLogger &&) noexcept = default;
EventLogger &operator=(const EventLogger &) = default;
EventLogger &operator=(EventLogger &&) noexcept = default;
virtual ~EventLogger() = default;
/* Returns the name of the logger */
virtual const nostd::string_view GetName() noexcept = 0;
/* Returns the delegate logger of this event logger */
virtual nostd::shared_ptr<Logger> GetDelegateLogger() noexcept = 0;
/**
* Emit a event Log Record object
*
* @param event_name Event name
* @param log_record Log record
*/
virtual void EmitEvent(nostd::string_view event_name,
nostd::unique_ptr<LogRecord> &&log_record) noexcept = 0;
/**
* Emit a event Log Record object with arguments
*
* @param event_name Event name
* @param args Arguments which can be used to set data of log record by type.
* Severity -> severity, severity_text
* string_view -> body
* AttributeValue -> body
* SpanContext -> span_id,tace_id and trace_flags
* SpanId -> span_id
* TraceId -> tace_id
* TraceFlags -> trace_flags
* SystemTimestamp -> timestamp
* system_clock::time_point -> timestamp
* KeyValueIterable -> attributes
* Key value iterable container -> attributes
* span<pair<string_view, AttributeValue>> -> attributes(return type of MakeAttributes)
*/
template <class... ArgumentType>
void EmitEvent(nostd::string_view event_name, ArgumentType &&...args)
{
nostd::shared_ptr<Logger> delegate_logger = GetDelegateLogger();
if (!delegate_logger)
{
return;
}
nostd::unique_ptr<LogRecord> log_record = delegate_logger->CreateLogRecord();
IgnoreTraitResult(detail::LogRecordSetterTrait<typename std::decay<ArgumentType>::type>::Set(
log_record.get(), std::forward<ArgumentType>(args))...);
EmitEvent(event_name, std::move(log_record));
}
private:
template <class... ValueType>
void IgnoreTraitResult(ValueType &&...)
{}
};
#endif
} // namespace logs
OPENTELEMETRY_END_NAMESPACE
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