ceph/src/tools/rbd_mirror/image_map/SimplePolicy.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_RBD_MIRROR_IMAGE_MAP_SIMPLE_POLICY_H
   5 #define CEPH_RBD_MIRROR_IMAGE_MAP_SIMPLE_POLICY_H
   6
   7 #include "Policy.h"
   8
   9 namespace rbd {
  10 namespace mirror {
  11 namespace image_map {
  12
  13 class SimplePolicy : public Policy {
  14 public:
  15   static SimplePolicy *create(librados::IoCtx &ioctx) {
  16     return new SimplePolicy(ioctx);
  17   }
  18
  19 protected:
  20   SimplePolicy(librados::IoCtx &ioctx);
  21
  22   std::string do_map(const InstanceToImageMap& map,
  23                      const std::string &global_image_id) override;
  24
  25   void do_shuffle_add_instances(
  26       const InstanceToImageMap& map, size_t image_count,
  27       std::set<std::string> *remap_global_image_ids) override;
  28
  29 private:
  30   size_t calc_images_per_instance(const InstanceToImageMap& map,
  31                                   size_t image_count);
  32
  33 };
  34
  35 } // namespace image_map
  36 } // namespace mirror
  37 } // namespace rbd
  38
  39 #endif // CEPH_RBD_MIRROR_IMAGE_MAP_SIMPLE_POLICY_H