StorageControl.h

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#ifndef FRAMEWORK_STORAGECONTROL_H_
#define FRAMEWORK_STORAGECONTROL_H_
 
#include <regex>
#include <string>
#include <vector>
 
namespace framework {
 
class StorageControl {
 public:
  enum class Hint {
    NoOpinion = 0,
    Undefined = -1,
    ShouldKeep = 1,
    MustKeep = 10,
    ShouldDrop = 2,
    MustDrop = 20
  };  // enum Hint
 
 public:
  void setDefaultKeep(bool keep) { defaultIsKeep_ = keep; }
 
  void resetEventState();
 
  void addHint(const std::string& processor_name, Hint hint,
               const std::string& purposeString);
 
  void addRule(const std::string& processor_pat,
               const std::string& purpose_pat);
 
  bool keepEvent(bool event_completed) const;
 
 private:
  bool defaultIsKeep_{true};
 
  std::vector<Hint> hints_;
 
  std::vector<std::pair<std::regex, std::regex>> rules_;
};
 
constexpr StorageControl::Hint hint_shouldKeep =
    StorageControl::Hint::ShouldKeep;
 
constexpr StorageControl::Hint hint_shouldDrop =
    StorageControl::Hint::ShouldDrop;
 
}  // namespace framework
 
#endif