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 #include "DaemonServer.h"
  28 #include "PyModules.h"
  29
  30 #include "DaemonState.h"
  31 #include "ClusterState.h"
  32
  33 class MMgrMap;
  34 class Mgr;
  35
  36 class MgrStandby : public Dispatcher,
  37                    public md_config_obs_t {
  38 public:
  39   // config observer bits
  40   const char** get_tracked_conf_keys() const override;
  41   void handle_conf_change(const struct md_config_t *conf,
  42                          const std::set <std::string> &changed) override;
  43
  44 protected:
  45   MonClient monc;
  46   std::unique_ptr<Messenger> client_messenger;
  47   Objecter objecter;
  48   Client client;
  49
  50   LogClient log_client;
  51   LogChannelRef clog, audit_clog;
  52
  53   Mutex lock;
  54   SafeTimer timer;
  55
  56   std::shared_ptr<Mgr> active_mgr;
  57
  58   int orig_argc;
  59   const char **orig_argv;
  60
  61   std::string state_str();
  62
  63   void handle_mgr_map(MMgrMap *m);
  64   void _update_log_config();
  65   void send_beacon();
  66
  67 public:
  68   MgrStandby(int argc, const char **argv);
  69   ~MgrStandby() override;
  70
  71   bool ms_dispatch(Message *m) override;
  72   bool ms_handle_reset(Connection *con) override { return false; }
  73   void ms_handle_remote_reset(Connection *con) override {}
  74   bool ms_get_authorizer(int dest_type, AuthAuthorizer **authorizer,
  75                          bool force_new) override;
  76   bool ms_handle_refused(Connection *con) override;
  77
  78   int init();
  79   void shutdown();
  80   void respawn();
  81   int main(vector<const char *> args);
  82   void handle_signal(int signum);
  83   void tick();
  84 };
  85
  86 #endif
  87