update_engine/payload_properties_handler_action.h

#ifndef PAYLOAD_PROPERTIES_HANDLER_ACTION_H_
#define PAYLOAD_PROPERTIES_HANDLER_ACTION_H_

#include "update_engine/common/action.h"
#include "update_engine/system_state.h"
#include "update_engine/payload_consumer/install_plan.h"
#include "update_engine/payload_properties.h"

// This class reads in Payload properties and converts what it sees into
// an install plan which is passed out.

namespace chromeos_update_engine {

class PayloadPropertiesHandlerAction;

template<>
class ActionTraits<PayloadPropertiesHandlerAction> {
 public:
  // Takes parameters on the input pipe.
  typedef PayloadProperties InputObjectType;
  typedef InstallPlan OutputObjectType;
};

class PayloadPropertiesHandlerAction : public Action<PayloadPropertiesHandlerAction>
{
 public:

  PayloadPropertiesHandlerAction(SystemState* system_state);
  ~PayloadPropertiesHandlerAction() override;

  typedef ActionTraits<PayloadPropertiesHandlerAction>::InputObjectType InputObjectType;
  typedef ActionTraits<PayloadPropertiesHandlerAction>::OutputObjectType OutputObjectType;

  void PerformAction() override;

  const InstallPlan& install_plan() const { return install_plan_; }

  // Debugging/logging
  static std::string StaticType() { return "PayloadPropertiesHandlerAction"; }
  std::string Type() const override { return StaticType(); }

 private:

  // Global system context.
  SystemState* system_state_;

  // The install plan, if we have an update.
  InstallPlan install_plan_;

  DISALLOW_COPY_AND_ASSIGN(PayloadPropertiesHandlerAction);
};

}  // namespace chromeos_update_engine

#endif  // PAYLOAD_PROPERTIES_HANDLER_ACTION_H_