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https://github.com/ceph/ceph
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9d73dc4520
git-svn-id: https://ceph.svn.sf.net/svnroot/ceph@1447 29311d96-e01e-0410-9327-a35deaab8ce9
93 lines
1.8 KiB
C++
93 lines
1.8 KiB
C++
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
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// vim: ts=8 sw=2 smarttab
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/*
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* Ceph - scalable distributed file system
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*
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* Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
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*
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* This is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software
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* Foundation. See file COPYING.
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*
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*/
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#ifndef __MON_ELECTOR_H
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#define __MON_ELECTOR_H
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#include <map>
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using namespace std;
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#include "include/types.h"
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#include "msg/Message.h"
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#include "include/Context.h"
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#include "common/Timer.h"
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class Monitor;
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class Elector {
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private:
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Monitor *mon;
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int whoami;
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Context *expire_event;
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void reset_timer(double plus=0.0);
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void cancel_timer();
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epoch_t epoch; // latest epoch we've seen. odd == election, even == stable,
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// electing me
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bool electing_me;
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utime_t start_stamp;
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set<int> acked_me;
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// electing them
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int leader_acked; // who i've acked
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utime_t ack_stamp; // and when
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void bump_epoch(epoch_t e=0); // i just saw a larger epoch
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class C_ElectionExpire : public Context {
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Elector *elector;
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public:
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C_ElectionExpire(Elector *e) : elector(e) { }
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void finish(int r) {
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elector->expire();
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}
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};
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void start(); // start an electing me
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void defer(int who);
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void expire(); // timer goes off
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void victory();
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void handle_propose(class MMonElection *m);
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void handle_ack(class MMonElection *m);
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void handle_victory(class MMonElection *m);
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public:
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Elector(Monitor *m, int w) : mon(m), whoami(w),
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expire_event(0),
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epoch(0),
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electing_me(false),
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leader_acked(-1) { }
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void init();
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void shutdown();
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void dispatch(Message *m);
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void call_election() {
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start();
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}
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};
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#endif
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