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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#ifndef __CEPH_CLS_RBD_H
#define __CEPH_CLS_RBD_H
#include "include/types.h"
#include "include/buffer_fwd.h"
#include "include/rbd_types.h"
#include "common/Formatter.h"
#include "cls/rbd/cls_rbd_types.h"
/// information about our parent image, if any
struct cls_rbd_parent {
int64_t pool_id = -1;
std::string pool_namespace;
std::string image_id;
snapid_t snap_id = CEPH_NOSNAP;
std::optional<uint64_t> head_overlap = std::nullopt;
cls_rbd_parent() {
}
cls_rbd_parent(const cls::rbd::ParentImageSpec& parent_image_spec,
const std::optional<uint64_t>& head_overlap)
: pool_id(parent_image_spec.pool_id),
pool_namespace(parent_image_spec.pool_namespace),
image_id(parent_image_spec.image_id), snap_id(parent_image_spec.snap_id),
head_overlap(head_overlap) {
}
inline bool exists() const {
return (pool_id >= 0 && !image_id.empty() && snap_id != CEPH_NOSNAP);
}
inline bool operator==(const cls_rbd_parent& rhs) const {
return (pool_id == rhs.pool_id &&
pool_namespace == rhs.pool_namespace &&
image_id == rhs.image_id &&
snap_id == rhs.snap_id);
}
inline bool operator!=(const cls_rbd_parent& rhs) const {
return !(*this == rhs);
}
void encode(ceph::buffer::list& bl, uint64_t features) const {
// NOTE: remove support for version 1 after Nautilus EOLed
uint8_t version = 1;
if ((features & CEPH_FEATURE_SERVER_NAUTILUS) != 0ULL) {
// break backwards compatability when using nautilus or later OSDs
version = 2;
}
ENCODE_START(version, version, bl);
encode(pool_id, bl);
if (version >= 2) {
encode(pool_namespace, bl);
}
encode(image_id, bl);
encode(snap_id, bl);
if (version == 1) {
encode(head_overlap.value_or(0ULL), bl);
} else {
encode(head_overlap, bl);
}
ENCODE_FINISH(bl);
}
void decode(ceph::buffer::list::const_iterator& bl) {
DECODE_START(2, bl);
decode(pool_id, bl);
if (struct_v >= 2) {
decode(pool_namespace, bl);
}
decode(image_id, bl);
decode(snap_id, bl);
if (struct_v == 1) {
uint64_t overlap;
decode(overlap, bl);
head_overlap = overlap;
} else {
decode(head_overlap, bl);
}
DECODE_FINISH(bl);
}
void dump(ceph::Formatter *f) const {
f->dump_int("pool_id", pool_id);
f->dump_string("pool_namespace", pool_namespace);
f->dump_string("image_id", image_id);
f->dump_unsigned("snap_id", snap_id);
if (head_overlap) {
f->dump_unsigned("head_overlap", *head_overlap);
}
}
static void generate_test_instances(std::list<cls_rbd_parent*>& o) {
o.push_back(new cls_rbd_parent{});
o.push_back(new cls_rbd_parent{{1, "", "image id", 234}, {}});
o.push_back(new cls_rbd_parent{{1, "", "image id", 234}, {123}});
o.push_back(new cls_rbd_parent{{1, "ns", "image id", 234}, {123}});
}
};
WRITE_CLASS_ENCODER_FEATURES(cls_rbd_parent)
struct cls_rbd_snap {
snapid_t id = CEPH_NOSNAP;
std::string name;
uint64_t image_size = 0;
uint8_t protection_status = RBD_PROTECTION_STATUS_UNPROTECTED;
cls_rbd_parent parent;
uint64_t flags = 0;
utime_t timestamp;
cls::rbd::SnapshotNamespace snapshot_namespace = {
cls::rbd::UserSnapshotNamespace{}};
uint32_t child_count = 0;
std::optional<uint64_t> parent_overlap = std::nullopt;
cls_rbd_snap() {
}
cls_rbd_snap(snapid_t id, const std::string& name, uint64_t image_size,
uint8_t protection_status, const cls_rbd_parent& parent,
uint64_t flags, utime_t timestamp,
const cls::rbd::SnapshotNamespace& snapshot_namespace,
uint32_t child_count,
const std::optional<uint64_t>& parent_overlap)
: id(id), name(name), image_size(image_size),
protection_status(protection_status), parent(parent), flags(flags),
timestamp(timestamp), snapshot_namespace(snapshot_namespace),
child_count(child_count), parent_overlap(parent_overlap) {
}
bool migrate_parent_format(uint64_t features) const {
return (((features & CEPH_FEATURE_SERVER_NAUTILUS) != 0) &&
(parent.exists()));
}
void encode(ceph::buffer::list& bl, uint64_t features) const {
// NOTE: remove support for versions < 8 after Nautilus EOLed
uint8_t min_version = 1;
if ((features & CEPH_FEATURE_SERVER_NAUTILUS) != 0ULL) {
// break backwards compatability when using nautilus or later OSDs
min_version = 8;
}
ENCODE_START(8, min_version, bl);
encode(id, bl);
encode(name, bl);
encode(image_size, bl);
if (min_version < 8) {
uint64_t image_features = 0;
encode(image_features, bl); // unused -- preserve ABI
encode(parent, bl, features);
}
encode(protection_status, bl);
encode(flags, bl);
encode(snapshot_namespace, bl);
encode(timestamp, bl);
encode(child_count, bl);
encode(parent_overlap, bl);
ENCODE_FINISH(bl);
}
void decode(ceph::buffer::list::const_iterator& p) {
DECODE_START(8, p);
decode(id, p);
decode(name, p);
decode(image_size, p);
if (struct_compat < 8) {
uint64_t features;
decode(features, p); // unused -- preserve ABI
}
if (struct_v >= 2 && struct_compat < 8) {
decode(parent, p);
}
if (struct_v >= 3) {
decode(protection_status, p);
}
if (struct_v >= 4) {
decode(flags, p);
}
if (struct_v >= 5) {
decode(snapshot_namespace, p);
}
if (struct_v >= 6) {
decode(timestamp, p);
}
if (struct_v >= 7) {
decode(child_count, p);
}
if (struct_v >= 8) {
decode(parent_overlap, p);
}
DECODE_FINISH(p);
}
void dump(ceph::Formatter *f) const {
f->dump_unsigned("id", id);
f->dump_string("name", name);
f->dump_unsigned("image_size", image_size);
if (parent.exists()) {
f->open_object_section("parent");
parent.dump(f);
f->close_section();
}
switch (protection_status) {
case RBD_PROTECTION_STATUS_UNPROTECTED:
f->dump_string("protection_status", "unprotected");
break;
case RBD_PROTECTION_STATUS_UNPROTECTING:
f->dump_string("protection_status", "unprotecting");
break;
case RBD_PROTECTION_STATUS_PROTECTED:
f->dump_string("protection_status", "protected");
break;
default:
ceph_abort();
}
f->dump_unsigned("child_count", child_count);
if (parent_overlap) {
f->dump_unsigned("parent_overlap", *parent_overlap);
}
}
static void generate_test_instances(std::list<cls_rbd_snap*>& o) {
o.push_back(new cls_rbd_snap{});
o.push_back(new cls_rbd_snap{1, "snap", 123456,
RBD_PROTECTION_STATUS_PROTECTED,
{{1, "", "image", 123}, 234}, 31, {},
cls::rbd::UserSnapshotNamespace{}, 543, {}});
o.push_back(new cls_rbd_snap{1, "snap", 123456,
RBD_PROTECTION_STATUS_PROTECTED,
{{1, "", "image", 123}, 234}, 31, {},
cls::rbd::UserSnapshotNamespace{}, 543, {0}});
o.push_back(new cls_rbd_snap{1, "snap", 123456,
RBD_PROTECTION_STATUS_PROTECTED,
{{1, "ns", "image", 123}, 234}, 31, {},
cls::rbd::UserSnapshotNamespace{}, 543,
{123}});
}
};
WRITE_CLASS_ENCODER_FEATURES(cls_rbd_snap)
#endif // __CEPH_CLS_RBD_H
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