1 // -*- mode:C; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
6 #include "include/utime.h"
7 #include "objclass/objclass.h"
9 #include "cls_user_ops.h"
14 static int write_entry(cls_method_context_t hctx
, const string
& key
, const cls_user_bucket_entry
& entry
)
19 int ret
= cls_cxx_map_set_val(hctx
, key
, &bl
);
26 static int remove_entry(cls_method_context_t hctx
, const string
& key
)
28 int ret
= cls_cxx_map_remove_key(hctx
, key
);
35 static void get_key_by_bucket_name(const string
& bucket_name
, string
*key
)
40 static int get_existing_bucket_entry(cls_method_context_t hctx
, const string
& bucket_name
,
41 cls_user_bucket_entry
& entry
)
43 if (bucket_name
.empty()) {
48 get_key_by_bucket_name(bucket_name
, &key
);
51 int rc
= cls_cxx_map_get_val(hctx
, key
, &bl
);
53 CLS_LOG(10, "could not read entry %s", key
.c_str());
57 bufferlist::iterator iter
= bl
.begin();
58 ::decode(entry
, iter
);
59 } catch (buffer::error
& err
) {
60 CLS_LOG(0, "ERROR: failed to decode entry %s", key
.c_str());
67 static int read_header(cls_method_context_t hctx
, cls_user_header
*header
)
71 int ret
= cls_cxx_map_read_header(hctx
, &bl
);
75 if (bl
.length() == 0) {
76 *header
= cls_user_header();
81 ::decode(*header
, bl
);
82 } catch (buffer::error
& err
) {
83 CLS_LOG(0, "ERROR: failed to decode user header");
90 static void add_header_stats(cls_user_stats
*stats
, cls_user_bucket_entry
& entry
)
92 stats
->total_entries
+= entry
.count
;
93 stats
->total_bytes
+= entry
.size
;
94 stats
->total_bytes_rounded
+= entry
.size_rounded
;
97 static void dec_header_stats(cls_user_stats
*stats
, cls_user_bucket_entry
& entry
)
99 stats
->total_bytes
-= entry
.size
;
100 stats
->total_bytes_rounded
-= entry
.size_rounded
;
101 stats
->total_entries
-= entry
.count
;
104 static void apply_entry_stats(const cls_user_bucket_entry
& src_entry
, cls_user_bucket_entry
*target_entry
)
106 target_entry
->size
= src_entry
.size
;
107 target_entry
->size_rounded
= src_entry
.size_rounded
;
108 target_entry
->count
= src_entry
.count
;
111 static int cls_user_set_buckets_info(cls_method_context_t hctx
, bufferlist
*in
, bufferlist
*out
)
113 bufferlist::iterator in_iter
= in
->begin();
115 cls_user_set_buckets_op op
;
117 ::decode(op
, in_iter
);
118 } catch (buffer::error
& err
) {
119 CLS_LOG(1, "ERROR: cls_user_add_op(): failed to decode op");
123 cls_user_header header
;
124 int ret
= read_header(hctx
, &header
);
126 CLS_LOG(0, "ERROR: failed to read user info header ret=%d", ret
);
130 for (list
<cls_user_bucket_entry
>::iterator iter
= op
.entries
.begin();
131 iter
!= op
.entries
.end(); ++iter
) {
132 cls_user_bucket_entry
& update_entry
= *iter
;
136 get_key_by_bucket_name(update_entry
.bucket
.name
, &key
);
138 cls_user_bucket_entry entry
;
139 ret
= get_existing_bucket_entry(hctx
, key
, entry
);
141 if (ret
== -ENOENT
) {
143 continue; /* racing bucket removal */
145 entry
= update_entry
;
151 CLS_LOG(0, "ERROR: get_existing_bucket_entry() key=%s returned %d", key
.c_str(), ret
);
153 } else if (ret
>= 0 && entry
.user_stats_sync
) {
154 dec_header_stats(&header
.stats
, entry
);
157 CLS_LOG(20, "storing entry for key=%s size=%lld count=%lld",
158 key
.c_str(), (long long)update_entry
.size
, (long long)update_entry
.count
);
160 // sync entry stats when not an op.add, as when the case is op.add if its a
161 // new entry we already have copied update_entry earlier, OTOH, for an existing entry
162 // we end up clobbering the existing stats for the bucket
164 apply_entry_stats(update_entry
, &entry
);
167 entry
.user_stats_sync
= true;
169 ret
= write_entry(hctx
, key
, entry
);
173 add_header_stats(&header
.stats
, entry
);
178 CLS_LOG(20, "header: total bytes=%lld entries=%lld", (long long)header
.stats
.total_bytes
, (long long)header
.stats
.total_entries
);
180 if (header
.last_stats_update
< op
.time
)
181 header
.last_stats_update
= op
.time
;
183 ::encode(header
, bl
);
185 ret
= cls_cxx_map_write_header(hctx
, &bl
);
192 static int cls_user_complete_stats_sync(cls_method_context_t hctx
, bufferlist
*in
, bufferlist
*out
)
194 bufferlist::iterator in_iter
= in
->begin();
196 cls_user_complete_stats_sync_op op
;
198 ::decode(op
, in_iter
);
199 } catch (buffer::error
& err
) {
200 CLS_LOG(1, "ERROR: cls_user_add_op(): failed to decode op");
204 cls_user_header header
;
205 int ret
= read_header(hctx
, &header
);
207 CLS_LOG(0, "ERROR: failed to read user info header ret=%d", ret
);
211 if (header
.last_stats_sync
< op
.time
)
212 header
.last_stats_sync
= op
.time
;
216 ::encode(header
, bl
);
218 ret
= cls_cxx_map_write_header(hctx
, &bl
);
225 static int cls_user_remove_bucket(cls_method_context_t hctx
, bufferlist
*in
, bufferlist
*out
)
227 bufferlist::iterator in_iter
= in
->begin();
229 cls_user_remove_bucket_op op
;
231 ::decode(op
, in_iter
);
232 } catch (buffer::error
& err
) {
233 CLS_LOG(1, "ERROR: cls_user_add_op(): failed to decode op");
237 cls_user_header header
;
238 int ret
= read_header(hctx
, &header
);
240 CLS_LOG(0, "ERROR: failed to read user info header ret=%d", ret
);
246 get_key_by_bucket_name(op
.bucket
.name
, &key
);
248 cls_user_bucket_entry entry
;
249 ret
= get_existing_bucket_entry(hctx
, key
, entry
);
250 if (ret
== -ENOENT
) {
251 return 0; /* idempotent removal */
254 CLS_LOG(0, "ERROR: get existing bucket entry, key=%s ret=%d", key
.c_str(), ret
);
258 if (entry
.user_stats_sync
) {
259 dec_header_stats(&header
.stats
, entry
);
262 CLS_LOG(20, "removing entry at %s", key
.c_str());
264 ret
= remove_entry(hctx
, key
);
271 static int cls_user_list_buckets(cls_method_context_t hctx
, bufferlist
*in
, bufferlist
*out
)
273 bufferlist::iterator in_iter
= in
->begin();
275 cls_user_list_buckets_op op
;
277 ::decode(op
, in_iter
);
278 } catch (buffer::error
& err
) {
279 CLS_LOG(1, "ERROR: cls_user_list_op(): failed to decode op");
283 map
<string
, bufferlist
> keys
;
285 const string
& from_index
= op
.marker
;
286 const string
& to_index
= op
.end_marker
;
287 const bool to_index_valid
= !to_index
.empty();
289 #define MAX_ENTRIES 1000
290 size_t max_entries
= op
.max_entries
;
291 if (max_entries
> MAX_ENTRIES
)
292 max_entries
= MAX_ENTRIES
;
296 int rc
= cls_cxx_map_get_vals(hctx
, from_index
, match_prefix
, max_entries
+ 1, &keys
);
300 CLS_LOG(20, "from_index=%s to_index=%s match_prefix=%s",
303 match_prefix
.c_str());
304 cls_user_list_buckets_ret ret
;
306 list
<cls_user_bucket_entry
>& entries
= ret
.entries
;
307 map
<string
, bufferlist
>::iterator iter
= keys
.begin();
313 for (i
= 0; i
< max_entries
&& iter
!= keys
.end(); ++i
, ++iter
) {
314 const string
& index
= iter
->first
;
317 if (to_index_valid
&& to_index
.compare(index
) <= 0)
320 bufferlist
& bl
= iter
->second
;
321 bufferlist::iterator biter
= bl
.begin();
323 cls_user_bucket_entry e
;
325 entries
.push_back(e
);
326 } catch (buffer::error
& err
) {
327 CLS_LOG(0, "ERROR: cls_user_list: could not decode entry, index=%s", index
.c_str());
331 if (iter
== keys
.end())
336 ret
.truncated
= !done
;
343 static int cls_user_get_header(cls_method_context_t hctx
, bufferlist
*in
, bufferlist
*out
)
345 bufferlist::iterator in_iter
= in
->begin();
347 cls_user_get_header_op op
;
349 ::decode(op
, in_iter
);
350 } catch (buffer::error
& err
) {
351 CLS_LOG(1, "ERROR: cls_user_get_header_op(): failed to decode op");
355 cls_user_get_header_ret op_ret
;
357 int ret
= read_header(hctx
, &op_ret
.header
);
361 ::encode(op_ret
, *out
);
368 CLS_LOG(1, "Loaded user class!");
370 cls_handle_t h_class
;
371 cls_method_handle_t h_user_set_buckets_info
;
372 cls_method_handle_t h_user_complete_stats_sync
;
373 cls_method_handle_t h_user_remove_bucket
;
374 cls_method_handle_t h_user_list_buckets
;
375 cls_method_handle_t h_user_get_header
;
377 cls_register("user", &h_class
);
380 cls_register_cxx_method(h_class
, "set_buckets_info", CLS_METHOD_RD
| CLS_METHOD_WR
,
381 cls_user_set_buckets_info
, &h_user_set_buckets_info
);
382 cls_register_cxx_method(h_class
, "complete_stats_sync", CLS_METHOD_RD
| CLS_METHOD_WR
,
383 cls_user_complete_stats_sync
, &h_user_complete_stats_sync
);
384 cls_register_cxx_method(h_class
, "remove_bucket", CLS_METHOD_RD
| CLS_METHOD_WR
, cls_user_remove_bucket
, &h_user_remove_bucket
);
385 cls_register_cxx_method(h_class
, "list_buckets", CLS_METHOD_RD
, cls_user_list_buckets
, &h_user_list_buckets
);
386 cls_register_cxx_method(h_class
, "get_header", CLS_METHOD_RD
, cls_user_get_header
, &h_user_get_header
);