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
  27
  28 class MMgrMap;
  29 class Mgr;
  30
  31 class MgrStandby : public Dispatcher,
  32                    public md_config_obs_t {
  33 public:
  34   // config observer bits
  35   const char** get_tracked_conf_keys() const override;
  36   void handle_conf_change(const struct md_config_t *conf,
  37                          const std::set <std::string> &changed) override;
  38
  39 protected:
  40   MonClient monc;
  41   std::unique_ptr<Messenger> client_messenger;
  42   Objecter objecter;
  43   Client client;
  44
  45   LogClient log_client;
  46   LogChannelRef clog, audit_clog;
  47
  48   Mutex lock;
  49   SafeTimer timer;
  50
  51   std::shared_ptr<Mgr> active_mgr;
  52
  53   int orig_argc;
  54   const char **orig_argv;
  55
  56   std::string state_str();
  57
  58   void handle_mgr_map(MMgrMap *m);
  59   void _update_log_config();
  60   void send_beacon();
  61
  62 public:
  63   MgrStandby(int argc, const char **argv);
  64   ~MgrStandby() override;
  65
  66   bool ms_dispatch(Message *m) override;
  67   bool ms_handle_reset(Connection *con) override { return false; }
  68   void ms_handle_remote_reset(Connection *con) override {}
  69   bool ms_get_authorizer(int dest_type, AuthAuthorizer **authorizer,
  70                          bool force_new) override;
  71   bool ms_handle_refused(Connection *con) override;
  72
  73   int init();
  74   void shutdown();
  75   void respawn();
  76   int main(vector<const char *> args);
  77   void handle_signal(int signum);
  78   void tick();
  79 };
  80
  81 #endif
  82