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diff --git a/sql/wsrep_server_service.h b/sql/wsrep_server_service.h
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+/* Copyright 2018 Codership Oy <info@codership.com>
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#ifndef WSREP_SERVER_SERVICE_H
+#define WSREP_SERVER_SERVICE_H
+
+/* wsrep-lib */
+#include "wsrep/server_service.hpp"
+#include "wsrep/exception.hpp" // not_impemented_error(), remove when finished
+#include "wsrep/storage_service.hpp"
+
+class Wsrep_server_state;
+
+
+/* wsrep::server_service interface implementation */
+class Wsrep_server_service : public wsrep::server_service
+{
+public:
+  Wsrep_server_service(Wsrep_server_state& server_state)
+    : m_server_state(server_state)
+  { }
+
+  wsrep::storage_service* storage_service(wsrep::client_service&);
+
+  wsrep::storage_service* storage_service(wsrep::high_priority_service&);
+
+  void release_storage_service(wsrep::storage_service*);
+
+  wsrep::high_priority_service*
+  streaming_applier_service(wsrep::client_service&);
+
+  wsrep::high_priority_service*
+  streaming_applier_service(wsrep::high_priority_service&);
+
+  void release_high_priority_service(wsrep::high_priority_service*);
+
+  void background_rollback(wsrep::client_state&);
+
+  void bootstrap();
+  void log_message(enum wsrep::log::level, const char*);
+
+  void log_dummy_write_set(wsrep::client_state&, const wsrep::ws_meta&)
+  { throw wsrep::not_implemented_error(); }
+
+  void log_view(wsrep::high_priority_service*, const wsrep::view&);
+
+  void recover_streaming_appliers(wsrep::client_service&);
+  void recover_streaming_appliers(wsrep::high_priority_service&);
+  wsrep::view get_view(wsrep::client_service&, const wsrep::id& own_id);
+
+  wsrep::gtid get_position(wsrep::client_service&);
+  void set_position(wsrep::client_service&, const wsrep::gtid&);
+
+  void log_state_change(enum wsrep::server_state::state,
+                        enum wsrep::server_state::state);
+
+  bool sst_before_init() const;
+
+  std::string sst_request();
+  int start_sst(const std::string&, const wsrep::gtid&, bool);
+
+  int wait_committing_transactions(int);
+
+  void debug_sync(const char*);
+private:
+  Wsrep_server_state& m_server_state;
+};
+
+/**
+   Helper method to create new streaming applier.
+
+   @param orig_thd Original thd context to copy operation context from.
+   @param ctx Context string for debug logging.
+ */
+class Wsrep_applier_service;
+Wsrep_applier_service*
+wsrep_create_streaming_applier(THD *orig_thd, const char *ctx);
+
+/**
+   Helper method to create new storage service.
+
+   @param orig_thd Original thd context to copy operation context from.
+   @param ctx Context string for debug logging.
+*/
+class Wsrep_storage_service;
+Wsrep_storage_service*
+wsrep_create_storage_service(THD *orig_thd, const char *ctx);
+
+#endif /* WSREP_SERVER_SERVICE */