1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
#include "rgw_metadata.h"
#include "rgw_zone.h"
#include "rgw_mdlog.h"
#include "services/svc_zone.h"
#include "services/svc_cls.h"
#define dout_subsys ceph_subsys_rgw
using namespace std;
const std::string RGWMetadataLogHistory::oid = "meta.history";
struct obj_version;
void rgw_shard_name(const string& prefix, unsigned max_shards, const string& key, string& name, int *shard_id)
{
uint32_t val = ceph_str_hash_linux(key.c_str(), key.size());
char buf[16];
if (shard_id) {
*shard_id = val % max_shards;
}
snprintf(buf, sizeof(buf), "%u", (unsigned)(val % max_shards));
name = prefix + buf;
}
void rgw_shard_name(const string& prefix, unsigned max_shards, const string& section, const string& key, string& name)
{
uint32_t val = ceph_str_hash_linux(key.c_str(), key.size());
val ^= ceph_str_hash_linux(section.c_str(), section.size());
char buf[16];
snprintf(buf, sizeof(buf), "%u", (unsigned)(val % max_shards));
name = prefix + buf;
}
void rgw_shard_name(const string& prefix, unsigned shard_id, string& name)
{
char buf[16];
snprintf(buf, sizeof(buf), "%u", shard_id);
name = prefix + buf;
}
int RGWMetadataLog::add_entry(const DoutPrefixProvider *dpp, const string& hash_key, const string& section, const string& key, bufferlist& bl) {
if (!svc.zone->need_to_log_metadata())
return 0;
string oid;
int shard_id;
rgw_shard_name(prefix, cct->_conf->rgw_md_log_max_shards, hash_key, oid, &shard_id);
mark_modified(shard_id);
real_time now = real_clock::now();
return svc.cls->timelog.add(dpp, oid, now, section, key, bl, null_yield);
}
int RGWMetadataLog::get_shard_id(const string& hash_key, int *shard_id)
{
string oid;
rgw_shard_name(prefix, cct->_conf->rgw_md_log_max_shards, hash_key, oid, shard_id);
return 0;
}
int RGWMetadataLog::store_entries_in_shard(const DoutPrefixProvider *dpp, list<cls_log_entry>& entries, int shard_id, librados::AioCompletion *completion)
{
string oid;
mark_modified(shard_id);
rgw_shard_name(prefix, shard_id, oid);
return svc.cls->timelog.add(dpp, oid, entries, completion, false, null_yield);
}
void RGWMetadataLog::init_list_entries(int shard_id, const real_time& from_time, const real_time& end_time,
const string& marker, void **handle)
{
LogListCtx *ctx = new LogListCtx();
ctx->cur_shard = shard_id;
ctx->from_time = from_time;
ctx->end_time = end_time;
ctx->marker = marker;
get_shard_oid(ctx->cur_shard, ctx->cur_oid);
*handle = (void *)ctx;
}
void RGWMetadataLog::complete_list_entries(void *handle) {
LogListCtx *ctx = static_cast<LogListCtx *>(handle);
delete ctx;
}
int RGWMetadataLog::list_entries(const DoutPrefixProvider *dpp, void *handle,
int max_entries,
list<cls_log_entry>& entries,
string *last_marker,
bool *truncated) {
LogListCtx *ctx = static_cast<LogListCtx *>(handle);
if (!max_entries) {
*truncated = false;
return 0;
}
std::string next_marker;
int ret = svc.cls->timelog.list(dpp, ctx->cur_oid, ctx->from_time, ctx->end_time,
max_entries, entries, ctx->marker,
&next_marker, truncated, null_yield);
if ((ret < 0) && (ret != -ENOENT))
return ret;
ctx->marker = std::move(next_marker);
if (last_marker) {
*last_marker = ctx->marker;
}
if (ret == -ENOENT)
*truncated = false;
return 0;
}
int RGWMetadataLog::get_info(const DoutPrefixProvider *dpp, int shard_id, RGWMetadataLogInfo *info)
{
string oid;
get_shard_oid(shard_id, oid);
cls_log_header header;
int ret = svc.cls->timelog.info(dpp, oid, &header, null_yield);
if ((ret < 0) && (ret != -ENOENT))
return ret;
info->marker = header.max_marker;
info->last_update = header.max_time.to_real_time();
return 0;
}
static void _mdlog_info_completion(librados::completion_t cb, void *arg)
{
auto infoc = static_cast<RGWMetadataLogInfoCompletion *>(arg);
infoc->finish(cb);
infoc->put(); // drop the ref from get_info_async()
}
RGWMetadataLogInfoCompletion::RGWMetadataLogInfoCompletion(info_callback_t cb)
: completion(librados::Rados::aio_create_completion((void *)this,
_mdlog_info_completion)),
callback(cb)
{
}
RGWMetadataLogInfoCompletion::~RGWMetadataLogInfoCompletion()
{
completion->release();
}
int RGWMetadataLog::get_info_async(const DoutPrefixProvider *dpp, int shard_id, RGWMetadataLogInfoCompletion *completion)
{
string oid;
get_shard_oid(shard_id, oid);
completion->get(); // hold a ref until the completion fires
return svc.cls->timelog.info_async(dpp, completion->get_io_obj(), oid,
&completion->get_header(),
completion->get_completion());
}
int RGWMetadataLog::trim(const DoutPrefixProvider *dpp, int shard_id, const real_time& from_time, const real_time& end_time,
const string& start_marker, const string& end_marker)
{
string oid;
get_shard_oid(shard_id, oid);
return svc.cls->timelog.trim(dpp, oid, from_time, end_time, start_marker,
end_marker, nullptr, null_yield);
}
int RGWMetadataLog::lock_exclusive(const DoutPrefixProvider *dpp, int shard_id, timespan duration, string& zone_id, string& owner_id) {
string oid;
get_shard_oid(shard_id, oid);
return svc.cls->lock.lock_exclusive(dpp, svc.zone->get_zone_params().log_pool, oid, duration, zone_id, owner_id);
}
int RGWMetadataLog::unlock(const DoutPrefixProvider *dpp, int shard_id, string& zone_id, string& owner_id) {
string oid;
get_shard_oid(shard_id, oid);
return svc.cls->lock.unlock(dpp, svc.zone->get_zone_params().log_pool, oid, zone_id, owner_id);
}
void RGWMetadataLog::mark_modified(int shard_id)
{
lock.get_read();
if (modified_shards.find(shard_id) != modified_shards.end()) {
lock.unlock();
return;
}
lock.unlock();
std::unique_lock wl{lock};
modified_shards.insert(shard_id);
}
void RGWMetadataLog::read_clear_modified(set<int> &modified)
{
std::unique_lock wl{lock};
modified.swap(modified_shards);
modified_shards.clear();
}
void RGWMetadataLogInfo::dump(Formatter *f) const
{
encode_json("marker", marker, f);
utime_t ut(last_update);
encode_json("last_update", ut, f);
}
void RGWMetadataLogInfo::decode_json(JSONObj *obj)
{
JSONDecoder::decode_json("marker", marker, obj);
utime_t ut;
JSONDecoder::decode_json("last_update", ut, obj);
last_update = ut.to_real_time();
}
|
