CpuTemperature.h

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// Copyright 2022 Stéphane Caron
// SPDX-License-Identifier: Apache-2.0
 
#pragma once
 
#include <string>
 
#include "vulp/observation/Source.h"
 
namespace vulp::observation::sources {
 
constexpr unsigned kCpuTemperatureBufferSize = 12;
 
class CpuTemperature : public Source {
 public:
  CpuTemperature(
      const char* temp_path = "/sys/class/thermal/thermal_zone0/temp");
 
  ~CpuTemperature() override;
 
  inline std::string prefix() const noexcept final { return "cpu_temperature"; }
 
  void write(Dictionary& observation) final;
 
  bool is_disabled() const { return is_disabled_; }
 
 private:
  void check_temperature_warning(const double temperature) noexcept;
 
 private:
  bool is_disabled_ = false;
 
  int fd_;
 
  char buffer_[kCpuTemperatureBufferSize];
 
  bool has_warned_;
};
 
}  // namespace vulp::observation::sources