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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_MWATCHNOTIFY_H
#define CEPH_MWATCHNOTIFY_H
#include "msg/Message.h"
class MWatchNotify : public MessageInstance<MWatchNotify> {
public:
friend factory;
private:
static constexpr int HEAD_VERSION = 3;
static constexpr int COMPAT_VERSION = 1;
public:
uint64_t cookie; ///< client unique id for this watch or notify
uint64_t ver; ///< unused
uint64_t notify_id; ///< osd unique id for a notify notification
uint8_t opcode; ///< CEPH_WATCH_EVENT_*
bufferlist bl; ///< notify payload (osd->client)
errorcode32_t return_code; ///< notify result (osd->client)
uint64_t notifier_gid; ///< who sent the notify
MWatchNotify()
: MessageInstance(CEPH_MSG_WATCH_NOTIFY, HEAD_VERSION, COMPAT_VERSION) { }
MWatchNotify(uint64_t c, uint64_t v, uint64_t i, uint8_t o, bufferlist b)
: MessageInstance(CEPH_MSG_WATCH_NOTIFY, HEAD_VERSION, COMPAT_VERSION),
cookie(c),
ver(v),
notify_id(i),
opcode(o),
bl(b),
return_code(0),
notifier_gid(0) { }
private:
~MWatchNotify() override {}
public:
void decode_payload() override {
uint8_t msg_ver;
auto p = payload.cbegin();
decode(msg_ver, p);
decode(opcode, p);
decode(cookie, p);
decode(ver, p);
decode(notify_id, p);
if (msg_ver >= 1)
decode(bl, p);
if (header.version >= 2)
decode(return_code, p);
else
return_code = 0;
if (header.version >= 3)
decode(notifier_gid, p);
else
notifier_gid = 0;
}
void encode_payload(uint64_t features) override {
using ceph::encode;
uint8_t msg_ver = 1;
encode(msg_ver, payload);
encode(opcode, payload);
encode(cookie, payload);
encode(ver, payload);
encode(notify_id, payload);
encode(bl, payload);
encode(return_code, payload);
encode(notifier_gid, payload);
}
std::string_view get_type_name() const override { return "watch-notify"; }
void print(ostream& out) const override {
out << "watch-notify("
<< ceph_watch_event_name(opcode) << " (" << (int)opcode << ")"
<< " cookie " << cookie
<< " notify " << notify_id
<< " ret " << return_code
<< ")";
}
};
#endif
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