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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include <mutex>
#include "opentelemetry/common/macros.h"
#include "opentelemetry/common/spin_lock_mutex.h"
#include "opentelemetry/logs/noop.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/version.h"
OPENTELEMETRY_BEGIN_NAMESPACE
namespace logs
{
#if OPENTELEMETRY_ABI_VERSION_NO < 2
class EventLoggerProvider;
#endif
class LoggerProvider;
/**
* Stores the singleton global LoggerProvider.
*/
class OPENTELEMETRY_EXPORT Provider
{
public:
/**
* Returns the singleton LoggerProvider.
*
* By default, a no-op LoggerProvider is returned. This will never return a
* nullptr LoggerProvider.
*/
static nostd::shared_ptr<LoggerProvider> GetLoggerProvider() noexcept
{
std::lock_guard<common::SpinLockMutex> guard(GetLock());
return nostd::shared_ptr<LoggerProvider>(GetProvider());
}
/**
* Changes the singleton LoggerProvider.
*/
static void SetLoggerProvider(const nostd::shared_ptr<LoggerProvider> &tp) noexcept
{
std::lock_guard<common::SpinLockMutex> guard(GetLock());
GetProvider() = tp;
}
#if OPENTELEMETRY_ABI_VERSION_NO < 2
/**
* Returns the singleton EventLoggerProvider.
*
* By default, a no-op EventLoggerProvider is returned. This will never return a
* nullptr EventLoggerProvider.
* @deprecated
*/
OPENTELEMETRY_DEPRECATED static nostd::shared_ptr<EventLoggerProvider>
GetEventLoggerProvider() noexcept
{
std::lock_guard<common::SpinLockMutex> guard(GetLock());
return nostd::shared_ptr<EventLoggerProvider>(GetEventProvider());
}
/**
* Changes the singleton EventLoggerProvider.
* @deprecated
*/
OPENTELEMETRY_DEPRECATED static void SetEventLoggerProvider(
const nostd::shared_ptr<EventLoggerProvider> &tp) noexcept
{
std::lock_guard<common::SpinLockMutex> guard(GetLock());
GetEventProvider() = tp;
}
#endif
private:
OPENTELEMETRY_API_SINGLETON static nostd::shared_ptr<LoggerProvider> &GetProvider() noexcept
{
static nostd::shared_ptr<LoggerProvider> provider(new NoopLoggerProvider);
return provider;
}
#if OPENTELEMETRY_ABI_VERSION_NO < 2
OPENTELEMETRY_API_SINGLETON static nostd::shared_ptr<EventLoggerProvider> &
GetEventProvider() noexcept
{
static nostd::shared_ptr<EventLoggerProvider> provider(new NoopEventLoggerProvider);
return provider;
}
#endif
OPENTELEMETRY_API_SINGLETON static common::SpinLockMutex &GetLock() noexcept
{
static common::SpinLockMutex lock;
return lock;
}
};
} // namespace logs
OPENTELEMETRY_END_NAMESPACE
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