ceph/src/mon/HealthMonitor.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) 2013 Inktank, Inc
   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 #ifndef CEPH_HEALTH_MONITOR_H
  15 #define CEPH_HEALTH_MONITOR_H
  16
  17 #include "mon/PaxosService.h"
  18
  19 //forward declaration
  20 namespace ceph { class Formatter; }
  21 class HealthService;
  22
  23 class HealthMonitor : public PaxosService
  24 {
  25   map<int,HealthService*> services;
  26   version_t version = 0;
  27   map<int,health_check_map_t> quorum_checks;  // for each quorum member
  28   health_check_map_t leader_checks;           // leader only
  29
  30 public:
  31   HealthMonitor(Monitor *m, Paxos *p, const string& service_name);
  32   ~HealthMonitor() override {
  33     assert(services.empty());
  34   }
  35
  36   /**
  37    * @defgroup HealthMonitor_Inherited_h Inherited abstract methods
  38    * @{
  39    */
  40   void init() override;
  41
  42   void get_health(
  43     list<pair<health_status_t,string> >& summary,
  44     list<pair<health_status_t,string> > *detail,
  45     CephContext *cct) const override {}
  46
  47   bool preprocess_query(MonOpRequestRef op) override;
  48   bool prepare_update(MonOpRequestRef op) override;
  49
  50   bool prepare_health_checks(MonOpRequestRef op);
  51
  52   bool check_leader_health();
  53   bool check_member_health();
  54
  55   void create_initial() override;
  56   void update_from_paxos(bool *need_bootstrap) override;
  57   void create_pending() override;
  58   void encode_pending(MonitorDBStore::TransactionRef t) override;
  59   version_t get_trim_to() override;
  60
  61   void encode_full(MonitorDBStore::TransactionRef t) override { }
  62
  63   void tick() override;
  64
  65   /**
  66    * @} // HealthMonitor_Inherited_h
  67    */
  68 };
  69
  70 #endif // CEPH_HEALTH_MONITOR_H