// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
/*
 * 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 __MOSDPGPEERACK_H
#define __MOSDPGPEERACK_H

#include "msg/Message.h"
#include "osd/OSD.h"

class MOSDPGPeerAck : public Message {
  __uint64_t       map_version;

 public:
  list<pg_t>                pg_dne;   // pg dne
  map<pg_t, PGReplicaInfo > pg_state; // state, lists, etc.

  __uint64_t get_version() { return map_version; }

  MOSDPGPeerAck() {}
  MOSDPGPeerAck(__uint64_t v) :
    Message(MSG_OSD_PG_PEERACK) {
    this->map_version = v;
  }
  
  char *get_type_name() { return "PGPeer"; }

  void encode_payload() {
    payload.append((char*)&map_version, sizeof(map_version));
    _encode(pg_dne, payload);
    
    int n = pg_state.size();
    payload.append((char*)&n, sizeof(n));
    for (map<pg_t, PGReplicaInfo >::iterator it = pg_state.begin();
         it != pg_state.end();
         it++) {
      payload.append((char*)&it->first, sizeof(it->first));
      it->second._encode(payload);
    }
  }
  void decode_payload() {
    int off = 0;
    payload.copy(off, sizeof(map_version), (char*)&map_version);
    off += sizeof(map_version);
    _decode(pg_dne, payload, off);

    int n;
    payload.copy(off, sizeof(n), (char*)&n);
    off += sizeof(n);
    for (int i=0; i<n; i++) {
      pg_t pgid;
      payload.copy(off, sizeof(pgid), (char*)&pgid);
      off += sizeof(pgid);
      pg_state[pgid]._decode(payload, off);
    }
  }
};

#endif