ceph/src/common/entity_name.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) 2011 New Dream Network
   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 CEPH_COMMON_ENTITY_NAME_H
  16 #define CEPH_COMMON_ENTITY_NAME_H
  17
  18 #include <ifaddrs.h>
  19
  20 #include "msg/msg_types.h"
  21
  22 /* Represents a Ceph entity name.
  23  *
  24  * For example, mds.0 is the name of the first metadata server.
  25  * client
  26  */
  27 struct EntityName
  28 {
  29   EntityName();
  30
  31   void encode(bufferlist& bl) const {
  32     ::encode(type, bl);
  33     ::encode(id, bl);
  34   }
  35   void decode(bufferlist::iterator& bl) {
  36     uint32_t type_;
  37     std::string id_;
  38     ::decode(type_, bl);
  39     ::decode(id_, bl);
  40     set(type_, id_);
  41   }
  42
  43   const std::string& to_str() const;
  44   const char *to_cstr() const;
  45   bool from_str(const std::string& s);
  46   void set(uint32_t type_, const std::string &id_);
  47   int set(const std::string &type_, const std::string &id_);
  48   void set_type(uint32_t type_);
  49   int set_type(const char *type);
  50   void set_id(const std::string &id_);
  51   void set_name(entity_name_t n);
  52
  53   const char* get_type_str() const;
  54
  55   uint32_t get_type() const { return type; }
  56   bool is_osd() const { return get_type() == CEPH_ENTITY_TYPE_OSD; }
  57   bool is_mgr() const { return get_type() == CEPH_ENTITY_TYPE_MGR; }
  58   bool is_mds() const { return get_type() == CEPH_ENTITY_TYPE_MDS; }
  59   bool is_client() const { return get_type() == CEPH_ENTITY_TYPE_CLIENT; }
  60   bool is_mon() const { return get_type() == CEPH_ENTITY_TYPE_MON; }
  61
  62   const char * get_type_name() const;
  63   const std::string &get_id() const;
  64   bool has_default_id() const;
  65
  66   static std::string get_valid_types_as_str();
  67
  68   friend bool operator<(const EntityName& a, const EntityName& b);
  69   friend std::ostream& operator<<(std::ostream& out, const EntityName& n);
  70   friend bool operator==(const EntityName& a, const EntityName& b);
  71   friend bool operator!=(const EntityName& a, const EntityName& b);
  72
  73 private:
  74   uint32_t type;
  75   std::string id;
  76   std::string type_id;
  77 };
  78
  79 uint32_t str_to_ceph_entity_type(const char * str);
  80
  81 WRITE_CLASS_ENCODER(EntityName)
  82
  83 WRITE_EQ_OPERATORS_2(EntityName, type, id)
  84
  85 #endif