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 class HealthMonitor : public PaxosService
  20 {
  21   version_t version = 0;
  22   std::map<int,health_check_map_t> quorum_checks;  // for each quorum member
  23   health_check_map_t leader_checks;           // leader only
  24   std::map<std::string,health_mute_t> mutes;
  25
  26   std::map<std::string,health_mute_t> pending_mutes;
  27
  28 public:
  29   HealthMonitor(Monitor &m, Paxos &p, const std::string& service_name);
  30
  31   /**
  32    * @defgroup HealthMonitor_Inherited_h Inherited abstract methods
  33    * @{
  34    */
  35   void init() override;
  36
  37   bool preprocess_query(MonOpRequestRef op) override;
  38   bool prepare_update(MonOpRequestRef op) override;
  39
  40   void create_initial() override;
  41   void update_from_paxos(bool *need_bootstrap) override;
  42   void create_pending() override;
  43   void encode_pending(MonitorDBStore::TransactionRef t) override;
  44   version_t get_trim_to() const override;
  45
  46   void encode_full(MonitorDBStore::TransactionRef t) override { }
  47
  48   void tick() override;
  49
  50   void gather_all_health_checks(health_check_map_t *all);
  51   health_status_t get_health_status(
  52     bool want_detail,
  53     ceph::Formatter *f,
  54     std::string *plain,
  55     const char *sep1 = " ",
  56     const char *sep2 = "; ");
  57
  58   /**
  59    * @} // HealthMonitor_Inherited_h
  60    */
  61 private:
  62   bool preprocess_command(MonOpRequestRef op);
  63
  64   bool prepare_command(MonOpRequestRef op);
  65   bool prepare_health_checks(MonOpRequestRef op);
  66   void check_for_older_version(health_check_map_t *checks);
  67   void check_for_mon_down(health_check_map_t *checks);
  68   void check_for_clock_skew(health_check_map_t *checks);
  69   void check_if_msgr2_enabled(health_check_map_t *checks);
  70   bool check_leader_health();
  71   bool check_member_health();
  72   bool check_mutes();
  73 };
  74
  75 #endif // CEPH_HEALTH_MONITOR_H