backend.hpp

 
#pragma once
 
#include <cstddef>
#include <string>
#include <string_view>
 
#include <rapidsmpf/bootstrap/types.hpp>
 
namespace rapidsmpf::bootstrap {
 
enum class BackendType {
    AUTO,
 
    FILE,
 
    SOCKET,
 
    SLURM,
};
 
namespace detail {
 
class Backend {
  public:
    virtual ~Backend() = default;
 
    virtual void put(std::string const& key, std::string_view value) = 0;
 
    virtual std::string get(std::string const& key, Duration timeout) = 0;
 
    virtual void barrier() = 0;
 
    virtual void sync() = 0;
 
    // Non-copyable, non-movable (backends manage resources)
    Backend(Backend const&) = delete;
    Backend& operator=(Backend const&) = delete;
    Backend(Backend&&) = delete;
    Backend& operator=(Backend&&) = delete;
 
  protected:
    Backend() = default;
};
 
}  // namespace detail
}  // namespace rapidsmpf::bootstrap