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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_MMONJOIN_H
#define CEPH_MMONJOIN_H
#include "messages/PaxosServiceMessage.h"
class MMonJoin final : public PaxosServiceMessage {
public:
static constexpr int HEAD_VERSION = 3;
static constexpr int COMPAT_VERSION = 2;
uuid_d fsid;
std::string name;
entity_addrvec_t addrs;
/* The location members are for stretch mode. crush_loc is the location
* (generally just a "datacenter=<foo>" statement) of the monitor. The
* force_loc is whether the mon cluster should replace a previously-known
* location. Generally the monitor will force an update if it's given a
* location from the CLI on boot-up, and then never force again (so that it
* can be moved/updated via the ceph tool from elsewhere). */
map<string,string> crush_loc;
bool force_loc{false};
MMonJoin() : PaxosServiceMessage{MSG_MON_JOIN, 0, HEAD_VERSION, COMPAT_VERSION} {}
MMonJoin(uuid_d &f, std::string n, const entity_addrvec_t& av)
: PaxosServiceMessage{MSG_MON_JOIN, 0, HEAD_VERSION, COMPAT_VERSION},
fsid(f), name(n), addrs(av)
{ }
MMonJoin(uuid_d &f, std::string n, const entity_addrvec_t& av, const map<string,string>& cloc, bool force)
: PaxosServiceMessage{MSG_MON_JOIN, 0, HEAD_VERSION, COMPAT_VERSION},
fsid(f), name(n), addrs(av), crush_loc(cloc), force_loc(force)
{ }
private:
~MMonJoin() final {}
public:
std::string_view get_type_name() const override { return "mon_join"; }
void print(std::ostream& o) const override {
o << "mon_join(" << name << " " << addrs << " " << crush_loc << ")";
}
void encode_payload(uint64_t features) override {
using ceph::encode;
paxos_encode();
encode(fsid, payload);
encode(name, payload);
if (HAVE_FEATURE(features, SERVER_NAUTILUS)) {
header.version = HEAD_VERSION;
header.compat_version = COMPAT_VERSION;
encode(addrs, payload, features);
encode(crush_loc, payload);
encode(force_loc, payload);
} else {
header.version = 1;
header.compat_version = 1;
encode(addrs.legacy_addr(), payload, features);
}
}
void decode_payload() override {
using ceph::decode;
auto p = payload.cbegin();
paxos_decode(p);
decode(fsid, p);
decode(name, p);
if (header.version == 1) {
entity_addr_t addr;
decode(addr, p);
addrs = entity_addrvec_t(addr);
} else {
decode(addrs, p);
if (header.version >= 3) {
decode(crush_loc, p);
decode(force_loc, p);
}
}
}
};
#endif
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