includes/opentelemetry/logs/provider.h

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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;
 
class OPENTELEMETRY_EXPORT Provider
{
public:
  static nostd::shared_ptr<LoggerProvider> GetLoggerProvider() noexcept
  {
    std::lock_guard<common::SpinLockMutex> guard(GetLock());
    return nostd::shared_ptr<LoggerProvider>(GetProvider());
  }
 
  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
 
  OPENTELEMETRY_DEPRECATED static nostd::shared_ptr<EventLoggerProvider>
  GetEventLoggerProvider() noexcept
  {
    std::lock_guard<common::SpinLockMutex> guard(GetLock());
    return nostd::shared_ptr<EventLoggerProvider>(GetEventProvider());
  }
 
  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_DEPRECATED
  OPENTELEMETRY_API_SINGLETON static nostd::shared_ptr<EventLoggerProvider> &
  GetEventProvider() noexcept
  {
#  if defined(_MSC_VER)
#    pragma warning(push)
#    pragma warning(disable : 4996)
#  elif defined(__GNUC__) && !defined(__clang__) && !defined(__apple_build_version__)
#    pragma GCC diagnostic push
#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#  elif defined(__clang__) || defined(__apple_build_version__)
#    pragma clang diagnostic push
#    pragma clang diagnostic ignored "-Wdeprecated-declarations"
#  endif
 
    static nostd::shared_ptr<EventLoggerProvider> provider(new NoopEventLoggerProvider);
    return provider;
 
#  if defined(_MSC_VER)
#    pragma warning(pop)
#  elif defined(__GNUC__) && !defined(__clang__) && !defined(__apple_build_version__)
#    pragma GCC diagnostic pop
#  elif defined(__clang__) || defined(__apple_build_version__)
#    pragma clang diagnostic pop
#  endif
  }
#endif
 
  OPENTELEMETRY_API_SINGLETON static common::SpinLockMutex &GetLock() noexcept
  {
    static common::SpinLockMutex lock;
    return lock;
  }
};
 
}  // namespace logs
OPENTELEMETRY_END_NAMESPACE