PrimaryServerState.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef O2_PRIMARYSERVERSTATE_H
#define O2_PRIMARYSERVERSTATE_H
 
#include <TMessage.h>
#include <fairmq/FwdDecls.h>
 
namespace o2
{
 
enum class O2PrimaryServerState {
  Initializing = 0,
  ReadyToServe = 1,
  WaitingEvent = 2,
  Idle = 3,
  Stopped = 4
};
inline constexpr const char* PrimStateToString[5] = {"INIT", "SERVING", "WAITEVENT", "IDLE", "STOPPED"};
 
enum class O2PrimaryServerInfoRequest {
  Status = 1,       // asks to retrieve current status of O2PrimaryServerDevice --> will send O2PrimaryServerState
  Config = 2,       // asks for o2-sim config reply
  AllowShutdown = 3 // can be used to let particle server know that shutdown is now safe (once all components initialized)
};
 
struct PrimaryChunkRequest {
  int workerid = -1;
  int workerpid = -1;
  int requestid = -1;
};
 
struct PrimaryChunkAnswer {
  O2PrimaryServerState serverstate;
  bool payload_attached; // whether real payload follows (or server has no work at this moment)
};
 
class TMessageWrapper : public TMessage
{
 public:
  TMessageWrapper(void* buf, Int_t len) : TMessage(buf, len) { ResetBit(kIsOwner); }
  ~TMessageWrapper() override = default;
};
 
bool querySimConfig(fair::mq::Channel& channel);
 
} // namespace o2
 
#endif //O2_PRIMARYSERVERSTATE_H