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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_MDIRUPDATE_H
#define CEPH_MDIRUPDATE_H
#include "messages/MMDSOp.h"
class MDirUpdate final : public MMDSOp {
public:
mds_rank_t get_source_mds() const { return from_mds; }
dirfrag_t get_dirfrag() const { return dirfrag; }
int get_dir_rep() const { return dir_rep; }
const std::set<int32_t>& get_dir_rep_by() const { return dir_rep_by; }
bool should_discover() const { return discover > tried_discover; }
const filepath& get_path() const { return path; }
bool has_tried_discover() const { return tried_discover > 0; }
void inc_tried_discover() const { ++tried_discover; }
std::string_view get_type_name() const override { return "dir_update"; }
void print(std::ostream& out) const override {
out << "dir_update(" << get_dirfrag() << ")";
}
void decode_payload() override {
using ceph::decode;
auto p = payload.cbegin();
decode(from_mds, p);
decode(dirfrag, p);
decode(dir_rep, p);
decode(discover, p);
decode(dir_rep_by, p);
decode(path, p);
}
void encode_payload(uint64_t features) override {
using ceph::encode;
encode(from_mds, payload);
encode(dirfrag, payload);
encode(dir_rep, payload);
encode(discover, payload);
encode(dir_rep_by, payload);
encode(path, payload);
}
protected:
~MDirUpdate() final {}
MDirUpdate() : MMDSOp(MSG_MDS_DIRUPDATE, HEAD_VERSION, COMPAT_VERSION) {}
MDirUpdate(mds_rank_t f,
dirfrag_t dirfrag,
int dir_rep,
const std::set<int32_t>& dir_rep_by,
filepath& path,
bool discover = false) :
MMDSOp(MSG_MDS_DIRUPDATE, HEAD_VERSION, COMPAT_VERSION), from_mds(f), dirfrag(dirfrag),
dir_rep(dir_rep), dir_rep_by(dir_rep_by), path(path) {
this->discover = discover ? 5 : 0;
}
MDirUpdate(const MDirUpdate& m)
: MMDSOp{MSG_MDS_DIRUPDATE},
from_mds(m.from_mds),
dirfrag(m.dirfrag),
dir_rep(m.dir_rep),
discover(m.discover),
dir_rep_by(m.dir_rep_by),
path(m.path),
tried_discover(m.tried_discover)
{}
mds_rank_t from_mds = -1;
dirfrag_t dirfrag;
int32_t dir_rep = 5;
int32_t discover = 5;
std::set<int32_t> dir_rep_by;
filepath path;
mutable int tried_discover = 0; // XXX HACK
private:
static constexpr int HEAD_VERSION = 1;
static constexpr int COMPAT_VERSION = 1;
template<class T, typename... Args>
friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
template<class T, typename... Args>
friend MURef<T> crimson::make_message(Args&&... args);
};
#endif
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