initial code repo

[stor4nfv.git] / src / ceph / src / mgr / MgrClient.h

diff --git a/src/ceph/src/mgr/MgrClient.h b/src/ceph/src/mgr/MgrClient.h
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+++ b/src/ceph/src/mgr/MgrClient.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2016 John Spray <john.spray@redhat.com>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ */
+
+#ifndef MGR_CLIENT_H_
+#define MGR_CLIENT_H_
+
+#include "msg/Dispatcher.h"
+#include "mon/MgrMap.h"
+
+#include "msg/Connection.h"
+
+#include "common/perf_counters.h"
+#include "common/Timer.h"
+#include "common/CommandTable.h"
+
+class MMgrMap;
+class MMgrConfigure;
+class Messenger;
+class MCommandReply;
+class MPGStats;
+
+class MgrSessionState
+{
+  public:
+  // Which performance counters have we already transmitted schema for?
+  std::set<std::string> declared;
+
+  // Our connection to the mgr
+  ConnectionRef con;
+};
+
+class MgrCommand : public CommandOp
+{
+  public:
+
+  MgrCommand(ceph_tid_t t) : CommandOp(t) {}
+  MgrCommand() : CommandOp() {}
+};
+
+class MgrClient : public Dispatcher
+{
+protected:
+  CephContext *cct;
+  MgrMap map;
+  Messenger *msgr;
+
+  unique_ptr<MgrSessionState> session;
+
+  Mutex lock = {"MgrClient::lock"};
+
+  uint32_t stats_period = 0;
+  uint32_t stats_threshold = 0;
+  SafeTimer timer;
+
+  CommandTable<MgrCommand> command_table;
+
+  utime_t last_connect_attempt;
+
+  Context *report_callback = nullptr;
+  Context *connect_retry_callback = nullptr;
+
+  // If provided, use this to compose an MPGStats to send with
+  // our reports (hook for use by OSD)
+  std::function<MPGStats*()> pgstats_cb;
+
+  // for service registration and beacon
+  bool service_daemon = false;
+  bool daemon_dirty_status = false;
+  std::string service_name, daemon_name;
+  std::map<std::string,std::string> daemon_metadata;
+  std::map<std::string,std::string> daemon_status;
+
+  void reconnect();
+  void _send_open();
+
+public:
+  MgrClient(CephContext *cct_, Messenger *msgr_);
+
+  void set_messenger(Messenger *msgr_) { msgr = msgr_; }
+
+  void init();
+  void shutdown();
+
+  bool ms_dispatch(Message *m) override;
+  bool ms_handle_reset(Connection *con) override;
+  void ms_handle_remote_reset(Connection *con) override {}
+  bool ms_handle_refused(Connection *con) override;
+
+  bool handle_mgr_map(MMgrMap *m);
+  bool handle_mgr_configure(MMgrConfigure *m);
+  bool handle_command_reply(MCommandReply *m);
+
+  void send_report();
+  void send_pgstats();
+
+  void set_pgstats_cb(std::function<MPGStats*()> cb_)
+  {
+    Mutex::Locker l(lock);
+    pgstats_cb = cb_;
+  }
+
+  int start_command(const vector<string>& cmd, const bufferlist& inbl,
+                   bufferlist *outbl, string *outs,
+                   Context *onfinish);
+
+  int service_daemon_register(
+    const std::string& service,
+    const std::string& name,
+    const std::map<std::string,std::string>& metadata);
+  int service_daemon_update_status(
+    const std::map<std::string,std::string>& status);
+};
+
+#endif
+