ComponentRequest.hpp

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#ifndef DAQDATAFORMATS_INCLUDE_DAQDATAFORMATS_COMPONENTREQUEST_HPP_
#define DAQDATAFORMATS_INCLUDE_DAQDATAFORMATS_COMPONENTREQUEST_HPP_
 
#include "daqdataformats/SourceID.hpp"
#include "daqdataformats/Types.hpp"
 
#include <cstddef>
#include <iostream>
#include <ostream>
#include <string>
 
namespace dunedaq::daqdataformats {
 
struct ComponentRequest
{
  static constexpr uint32_t s_component_request_version = 2; // NOLINT(build/unsigned)
 
  uint32_t version{ s_component_request_version }; // NOLINT(build/unsigned)
  uint32_t unused{ 0xFFFFFFFF };                   
 
  SourceID component; 
 
  timestamp_t window_begin{ TypeDefaults::s_invalid_timestamp };
 
  timestamp_t window_end{ TypeDefaults::s_invalid_timestamp };
 
  ComponentRequest() = default;
  inline ComponentRequest(SourceID const& comp, timestamp_t const& wbegin, timestamp_t const& wend);
};
 
  static_assert(ComponentRequest::s_component_request_version == 2, "This is intentionally designed to tell the developer to update the static_assert checks (including this one) when the version is bumped");
 
static_assert(sizeof(ComponentRequest) == 32, "ComponentRequest struct size different than expected!");
static_assert(offsetof(ComponentRequest, version) == 0, "ComponentRequest version field not at expected offset");
static_assert(offsetof(ComponentRequest, unused) == 4, "ComponentRequest unused field not at expected offset");
static_assert(offsetof(ComponentRequest, component) == 8, "ComponentRequest component field not at expected offset");
static_assert(offsetof(ComponentRequest, window_begin) == 16,
              "ComponentRequest window_begin field not at expected offset");
static_assert(offsetof(ComponentRequest, window_end) == 24, "ComponentRequest window_end field not at expected offset");
 
inline std::ostream&
operator<<(std::ostream& o, ComponentRequest const& cr)
{
  return o << cr.component << ", begin: " << cr.window_begin << ", end: " << cr.window_end;
}
 
inline std::istream&
operator>>(std::istream& is, ComponentRequest& cr)
{
  std::string tmp;
  return is >> cr.component >> tmp >> tmp >> cr.window_begin >> tmp >> tmp >> cr.window_end;
}
 
ComponentRequest::ComponentRequest(SourceID const& comp, timestamp_t const& wbegin, timestamp_t const& wend)
  : version(s_component_request_version)
  , component(comp)
  , window_begin(wbegin)
  , window_end(wend)
{}
} // namespace dunedaq::daqdataformats
 
#endif // DAQDATAFORMATS_INCLUDE_DAQDATAFORMATS_COMPONENTREQUEST_HPP_