ceph/src/librbd/journal/CreateRequest.h

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #ifndef CEPH_LIBRBD_JOURNAL_CREATE_REQUEST_H
   5 #define CEPH_LIBRBD_JOURNAL_CREATE_REQUEST_H
   6
   7 #include "include/int_types.h"
   8 #include "include/buffer.h"
   9 #include "include/rados/librados.hpp"
  10 #include "include/rbd/librbd.hpp"
  11 #include "common/Mutex.h"
  12 #include "librbd/ImageCtx.h"
  13 #include "journal/Journaler.h"
  14 #include "librbd/journal/Types.h"
  15 #include "librbd/journal/TypeTraits.h"
  16 #include "cls/journal/cls_journal_types.h"
  17
  18 using librados::IoCtx;
  19 using journal::Journaler;
  20
  21 class Context;
  22 class ContextWQ;
  23 class SafeTimer;
  24
  25 namespace journal {
  26   class Journaler;
  27 }
  28
  29 namespace librbd {
  30
  31 class ImageCtx;
  32
  33 namespace journal {
  34
  35 template<typename ImageCtxT = ImageCtx>
  36 class CreateRequest {
  37 public:
  38   static CreateRequest *create(IoCtx &ioctx, const std::string &imageid,
  39                                       uint8_t order, uint8_t splay_width,
  40                                       const std::string &object_pool,
  41                                       uint64_t tag_class, TagData &tag_data,
  42                                       const std::string &client_id,
  43                                       ContextWQ *op_work_queue, Context *on_finish) {
  44     return new CreateRequest(ioctx, imageid, order, splay_width, object_pool,
  45                                     tag_class, tag_data, client_id, op_work_queue,
  46                                     on_finish);
  47   }
  48
  49   void send();
  50
  51 private:
  52   typedef typename TypeTraits<ImageCtxT>::Journaler Journaler;
  53
  54   CreateRequest(IoCtx &ioctx, const std::string &imageid, uint8_t order,
  55                        uint8_t splay_width, const std::string &object_pool,
  56                        uint64_t tag_class, TagData &tag_data,
  57                        const std::string &client_id, ContextWQ *op_work_queue,
  58                        Context *on_finish);
  59
  60   IoCtx &m_ioctx;
  61   std::string m_image_id;
  62   uint8_t m_order;
  63   uint8_t m_splay_width;
  64   std::string m_object_pool;
  65   uint64_t m_tag_class;
  66   TagData m_tag_data;
  67   std::string m_image_client_id;
  68   ContextWQ *m_op_work_queue;
  69   Context *m_on_finish;
  70
  71   CephContext *m_cct;
  72   cls::journal::Tag m_tag;
  73   bufferlist m_bl;
  74   Journaler *m_journaler;
  75   SafeTimer *m_timer;
  76   Mutex *m_timer_lock;
  77   int m_r_saved;
  78
  79   int64_t m_pool_id = -1;
  80
  81   void get_pool_id();
  82
  83   void create_journal();
  84   Context *handle_create_journal(int *result);
  85
  86   void allocate_journal_tag();
  87   Context *handle_journal_tag(int *result);
  88
  89   void register_client();
  90   Context *handle_register_client(int *result);
  91
  92   void shut_down_journaler(int r);
  93   Context *handle_journaler_shutdown(int *result);
  94
  95   void remove_journal();
  96   Context *handle_remove_journal(int *result);
  97
  98   void complete(int r);
  99 };
 100
 101 } // namespace journal
 102 } // namespace librbd
 103
 104 extern template class librbd::journal::CreateRequest<librbd::ImageCtx>;
 105
 106 #endif /* CEPH_LIBRBD_JOURNAL_CREATE_REQUEST_H */