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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) 2004-2006 Sage Weil <sage@newdream.net>
*
* 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 CEPH_CLASSMONITOR_H
#define CEPH_CLASSMONITOR_H
#include <map>
#include <set>
using namespace std;
#include "include/types.h"
#include "msg/Messenger.h"
#include "PaxosService.h"
#include "mon/Monitor.h"
#include "include/ClassLibrary.h"
class MMonCommand;
class MClass;
class ClassMonitor : public PaxosService {
void class_usage(stringstream& ss);
private:
multimap<utime_t,ClassLibraryIncremental> pending_class;
ClassLibrary pending_list, list;
void create_initial(bufferlist& bl);
bool update_from_paxos();
void create_pending(); // prepare a new pending
void encode_pending(bufferlist &bl); // propose pending update to peers
void committed();
bool preprocess_query(PaxosServiceMessage *m); // true if processed.
bool prepare_update(PaxosServiceMessage *m);
bool preprocess_class(MClass *m);
bool prepare_class(MClass *m);
void _updated_class(MClass *m);
struct C_Class : public Context {
ClassMonitor *classmon;
MClass *ack;
C_Class(ClassMonitor *p, MClass *a) : classmon(p), ack(a) {}
void finish(int r) {
classmon->_updated_class(ack);
}
};
bool preprocess_command(MMonCommand *m);
bool prepare_command(MMonCommand *m);
bool store_impl(ClassInfo& info, ClassImpl& impl);
public:
ClassMonitor(Monitor *mn, Paxos *p) : PaxosService(mn, p) { }
void handle_request(MClass *m);
void tick(); // check state, take actions
};
#endif
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