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diff --git a/src/ceph/src/tools/rbd_mirror/ServiceDaemon.h b/src/ceph/src/tools/rbd_mirror/ServiceDaemon.h
new file mode 100644
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+++ b/src/ceph/src/tools/rbd_mirror/ServiceDaemon.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_RBD_MIRROR_SERVICE_DAEMON_H
+#define CEPH_RBD_MIRROR_SERVICE_DAEMON_H
+
+#include "common/Mutex.h"
+#include "tools/rbd_mirror/types.h"
+#include "tools/rbd_mirror/service_daemon/Types.h"
+#include <map>
+#include <string>
+
+struct CephContext;
+struct Context;
+namespace librbd { struct ImageCtx; }
+
+namespace rbd {
+namespace mirror {
+
+template <typename> struct Threads;
+
+template <typename ImageCtxT = librbd::ImageCtx>
+class ServiceDaemon {
+public:
+  ServiceDaemon(CephContext *cct, RadosRef rados, Threads<ImageCtxT>* threads);
+  ~ServiceDaemon();
+
+  int init();
+
+  void add_pool(int64_t pool_id, const std::string& pool_name);
+  void remove_pool(int64_t pool_id);
+
+  uint64_t add_or_update_callout(int64_t pool_id, uint64_t callout_id,
+                                 service_daemon::CalloutLevel callout_level,
+                                 const std::string& text);
+  void remove_callout(int64_t pool_id, uint64_t callout_id);
+
+  void add_or_update_attribute(int64_t pool_id, const std::string& key,
+                               const service_daemon::AttributeValue& value);
+  void remove_attribute(int64_t pool_id, const std::string& key);
+
+private:
+  struct Callout {
+    service_daemon::CalloutLevel level;
+    std::string text;
+
+    Callout() : level(service_daemon::CALLOUT_LEVEL_INFO) {
+    }
+    Callout(service_daemon::CalloutLevel level, const std::string& text)
+      : level(level), text(text) {
+    }
+  };
+  typedef std::map<uint64_t, Callout> Callouts;
+  typedef std::map<std::string, service_daemon::AttributeValue> Attributes;
+
+  struct Pool {
+    std::string name;
+    Callouts callouts;
+    Attributes attributes;
+
+    Pool(const std::string& name) : name(name) {
+    }
+  };
+
+  typedef std::map<int64_t, Pool> Pools;
+
+  CephContext *m_cct;
+  RadosRef m_rados;
+  Threads<ImageCtxT>* m_threads;
+
+  Mutex m_lock;
+  Pools m_pools;
+  uint64_t m_callout_id = service_daemon::CALLOUT_ID_NONE;
+
+  Context* m_timer_ctx = nullptr;
+
+  void schedule_update_status();
+  void update_status();
+};
+
+} // namespace mirror
+} // namespace rbd
+
+extern template class rbd::mirror::ServiceDaemon<librbd::ImageCtx>;
+
+#endif // CEPH_RBD_MIRROR_SERVICE_DAEMON_H