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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_OBJECT_H
#define CEPH_OBJECT_H
#include <cstdint>
#include <cstdio>
#include <iomanip>
#include <iosfwd>
#include <string>
#include <string>
#include <string_view>
#include "include/rados.h"
#include "include/unordered_map.h"
#include "hash.h"
#include "encoding.h"
#include "ceph_hash.h"
struct object_t {
std::string name;
object_t() {}
// cppcheck-suppress noExplicitConstructor
object_t(const char *s) : name(s) {}
// cppcheck-suppress noExplicitConstructor
object_t(const std::string& s) : name(s) {}
object_t(std::string&& s) : name(std::move(s)) {}
object_t(std::string_view s) : name(s) {}
auto operator<=>(const object_t&) const noexcept = default;
void swap(object_t& o) {
name.swap(o.name);
}
void clear() {
name.clear();
}
void encode(ceph::buffer::list &bl) const {
using ceph::encode;
encode(name, bl);
}
void decode(ceph::buffer::list::const_iterator &bl) {
using ceph::decode;
decode(name, bl);
}
};
WRITE_CLASS_ENCODER(object_t)
inline std::ostream& operator<<(std::ostream& out, const object_t& o) {
return out << o.name;
}
namespace std {
template<> struct hash<object_t> {
size_t operator()(const object_t& r) const {
//static hash<string> H;
//return H(r.name);
return ceph_str_hash_linux(r.name.c_str(), r.name.length());
}
};
} // namespace std
struct file_object_t {
uint64_t ino, bno;
mutable char buf[34];
file_object_t(uint64_t i=0, uint64_t b=0) : ino(i), bno(b) {
buf[0] = 0;
}
const char *c_str() const {
if (!buf[0])
snprintf(buf, sizeof(buf), "%llx.%08llx", (long long unsigned)ino, (long long unsigned)bno);
return buf;
}
operator object_t() {
return object_t(c_str());
}
};
// ---------------------------
// snaps
struct snapid_t {
uint64_t val;
// cppcheck-suppress noExplicitConstructor
snapid_t(uint64_t v=0) : val(v) {}
snapid_t operator+=(snapid_t o) { val += o.val; return *this; }
snapid_t operator++() { ++val; return *this; }
operator uint64_t() const { return val; }
};
inline void encode(snapid_t i, ceph::buffer::list &bl) {
using ceph::encode;
encode(i.val, bl);
}
inline void decode(snapid_t &i, ceph::buffer::list::const_iterator &p) {
using ceph::decode;
decode(i.val, p);
}
template<>
struct denc_traits<snapid_t> {
static constexpr bool supported = true;
static constexpr bool featured = false;
static constexpr bool bounded = true;
static constexpr bool need_contiguous = true;
static void bound_encode(const snapid_t& o, size_t& p) {
denc(o.val, p);
}
static void encode(const snapid_t &o, ceph::buffer::list::contiguous_appender& p) {
denc(o.val, p);
}
static void decode(snapid_t& o, ceph::buffer::ptr::const_iterator &p) {
denc(o.val, p);
}
};
inline std::ostream& operator<<(std::ostream& out, const snapid_t& s) {
if (s == CEPH_NOSNAP)
return out << "head";
else if (s == CEPH_SNAPDIR)
return out << "snapdir";
else
return out << std::hex << s.val << std::dec;
}
struct sobject_t {
object_t oid;
snapid_t snap;
sobject_t() : snap(0) {}
sobject_t(object_t o, snapid_t s) : oid(o), snap(s) {}
auto operator<=>(const sobject_t&) const noexcept = default;
void swap(sobject_t& o) {
oid.swap(o.oid);
snapid_t t = snap;
snap = o.snap;
o.snap = t;
}
void encode(ceph::buffer::list& bl) const {
using ceph::encode;
encode(oid, bl);
encode(snap, bl);
}
void decode(ceph::buffer::list::const_iterator& bl) {
using ceph::decode;
decode(oid, bl);
decode(snap, bl);
}
};
WRITE_CLASS_ENCODER(sobject_t)
inline std::ostream& operator<<(std::ostream& out, const sobject_t &o) {
return out << o.oid << "/" << o.snap;
}
namespace std {
template<> struct hash<sobject_t> {
size_t operator()(const sobject_t &r) const {
static hash<object_t> H;
static rjhash<uint64_t> I;
return H(r.oid) ^ I(r.snap);
}
};
} // namespace std
#endif
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