ceph/src/mgr/MgrStandby.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * Ceph - scalable distributed file system
   5  *
   6  * Copyright (C) 2016 John Spray <john.spray@redhat.com>
   7  *
   8  * This is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1, as published by the Free Software
  11  * Foundation.  See file COPYING.
  12  */
  13
  14
  15 #ifndef MGR_STANDBY_H_
  16 #define MGR_STANDBY_H_
  17
  18 #include "auth/Auth.h"
  19 #include "common/Finisher.h"
  20 #include "common/Timer.h"
  21 #include "common/LogClient.h"
  22
  23 #include "client/Client.h"
  24 #include "mon/MonClient.h"
  25 #include "osdc/Objecter.h"
  26 #include "PyModuleRegistry.h"
  27
  28
  29 class MMgrMap;
  30 class Mgr;
  31
  32 class MgrStandby : public Dispatcher,
  33                    public md_config_obs_t {
  34 public:
  35   // config observer bits
  36   const char** get_tracked_conf_keys() const override;
  37   void handle_conf_change(const struct md_config_t *conf,
  38                          const std::set <std::string> &changed) override;
  39
  40 protected:
  41   MonClient monc;
  42   std::unique_ptr<Messenger> client_messenger;
  43   Objecter objecter;
  44   Client client;
  45
  46   LogClient log_client;
  47   LogChannelRef clog, audit_clog;
  48
  49   Mutex lock;
  50   SafeTimer timer;
  51
  52   PyModuleRegistry py_module_registry;
  53   std::shared_ptr<Mgr> active_mgr;
  54
  55   int orig_argc;
  56   const char **orig_argv;
  57
  58   std::string state_str();
  59
  60   void handle_mgr_map(MMgrMap *m);
  61   void _update_log_config();
  62   void send_beacon();
  63
  64   bool available_in_map;
  65
  66 public:
  67   MgrStandby(int argc, const char **argv);
  68   ~MgrStandby() override;
  69
  70   bool ms_dispatch(Message *m) override;
  71   bool ms_handle_reset(Connection *con) override { return false; }
  72   void ms_handle_remote_reset(Connection *con) override {}
  73   bool ms_get_authorizer(int dest_type, AuthAuthorizer **authorizer,
  74                          bool force_new) override;
  75   bool ms_handle_refused(Connection *con) override;
  76
  77   int init();
  78   void shutdown();
  79   void respawn();
  80   int main(vector<const char *> args);
  81   void handle_signal(int signum);
  82   void tick();
  83 };
  84
  85 #endif
  86