+++ /dev/null
-// -*- 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) 2012 Red Hat
- *
- * 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 BEACON_STATE_H
-#define BEACON_STATE_H
-
-#include "include/types.h"
-#include "include/Context.h"
-#include "common/Mutex.h"
-#include "msg/Dispatcher.h"
-#include "messages/MMDSBeacon.h"
-
-class MonClient;
-class MMDSBeacon;
-class Message;
-class MDSRank;
-
-
-/**
- * One of these per MDS. Handle beacon logic in this separate class so
- * that a busy MDS holding its own lock does not hold up sending beacon
- * messages to the mon and cause false lagginess.
- *
- * So that we can continue to operate while the MDS is holding its own lock,
- * we keep copies of the data needed to generate beacon messages. The MDS is
- * responsible for calling Beacon::notify_* when things change.
- */
-class Beacon : public Dispatcher
-{
-public:
- Beacon(CephContext *cct_, MonClient *monc_, std::string name);
- ~Beacon() override;
-
- void init(MDSMap const *mdsmap);
- void shutdown();
-
- bool ms_dispatch(Message *m) override;
- void ms_handle_connect(Connection *c) override {}
- bool ms_handle_reset(Connection *c) override {return false;}
- void ms_handle_remote_reset(Connection *c) override {}
- bool ms_handle_refused(Connection *c) override {return false;}
-
- void notify_mdsmap(MDSMap const *mdsmap);
- void notify_health(MDSRank const *mds);
-
- void handle_mds_beacon(MMDSBeacon *m);
- void send();
-
- void set_want_state(MDSMap const *mdsmap, MDSMap::DaemonState const newstate);
- MDSMap::DaemonState get_want_state() const;
-
- /**
- * Send a beacon, and block until the ack is received from the mon
- * or `duration` seconds pass, whichever happens sooner. Useful
- * for emitting a last message on shutdown.
- */
- void send_and_wait(const double duration);
-
- bool is_laggy();
- utime_t get_laggy_until() const;
-
-private:
- void _notify_mdsmap(MDSMap const *mdsmap);
- void _send();
-
- //CephContext *cct;
- mutable Mutex lock;
- MonClient* monc;
- SafeTimer timer;
-
- // Items we duplicate from the MDS to have access under our own lock
- std::string name;
- version_t epoch;
- CompatSet compat;
- mds_rank_t standby_for_rank;
- std::string standby_for_name;
- fs_cluster_id_t standby_for_fscid;
- bool standby_replay;
- MDSMap::DaemonState want_state;
-
- // Internal beacon state
- version_t last_seq; // last seq sent to monitor
- std::map<version_t,utime_t> seq_stamp; // seq # -> time sent
- utime_t last_acked_stamp; // last time we sent a beacon that got acked
- utime_t last_mon_reconnect;
- bool was_laggy;
- utime_t laggy_until;
-
- // Health status to be copied into each beacon message
- MDSHealth health;
-
- // Ticker
- Context *sender = nullptr;
-
- version_t awaiting_seq;
- Cond waiting_cond;
-};
-
-#endif // BEACON_STATE_H
-