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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_MCLIENTRECONNECT_H
#define CEPH_MCLIENTRECONNECT_H
#include "mds/mds_types.h"
#include "include/ceph_features.h"
#include "msg/Message.h"
class MClientReconnect : public Message {
const static int HEAD_VERSION = 2;
public:
map<inodeno_t, cap_reconnect_t> caps; // only head inodes
vector<ceph_mds_snaprealm_reconnect> realms;
MClientReconnect() : Message(CEPH_MSG_CLIENT_RECONNECT, HEAD_VERSION) { }
private:
~MClientReconnect() {}
public:
const char *get_type_name() const { return "client_reconnect"; }
void print(ostream& out) const {
out << "client_reconnect("
<< caps.size() << " caps)";
}
void add_cap(inodeno_t ino, uint64_t cap_id, inodeno_t pathbase, const string& path,
int wanted, int issued,
inodeno_t sr) {
caps[ino] = cap_reconnect_t(cap_id, pathbase, path, wanted, issued, sr);
}
void add_snaprealm(inodeno_t ino, snapid_t seq, inodeno_t parent) {
ceph_mds_snaprealm_reconnect r;
r.ino = ino;
r.seq = seq;
r.parent = parent;
realms.push_back(r);
}
void encode_payload(uint64_t features) {
if (features & CEPH_FEATURE_FLOCK) {
// new protocol
::encode(caps, data);
} else {
// compat crap
header.version = 1;
map<inodeno_t, old_cap_reconnect_t> ocaps;
for (map<inodeno_t,cap_reconnect_t>::iterator p = caps.begin(); p != caps.end(); p++)
ocaps[p->first] = p->second;
::encode(ocaps, data);
}
::encode_nohead(realms, data);
}
void decode_payload() {
bufferlist::iterator p = data.begin();
if (header.version >= 2) {
// new protocol
::decode(caps, p);
} else {
// compat crap
map<inodeno_t, old_cap_reconnect_t> ocaps;
::decode(ocaps, p);
for (map<inodeno_t,old_cap_reconnect_t>::iterator q = ocaps.begin(); q != ocaps.end(); q++)
caps[q->first] = q->second;
}
while (p.end()) {
realms.push_back(ceph_mds_snaprealm_reconnect());
::decode(realms.back(), p);
}
}
};
#endif
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