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[awesomized/libmemcached] / libmemcached / behavior.cc
1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
2 *
3 * Libmemcached library
4 *
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * Copyright (C) 2006-2009 Brian Aker All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * * Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * * The names of its contributors may not be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 */
37
38 #include <libmemcached/common.h>
39 #include <libmemcached/options.hpp>
40 #include <libmemcached/virtual_bucket.h>
41
42 #include <ctime>
43 #include <sys/types.h>
44
45 bool memcached_is_consistent_distribution(const Memcached* memc)
46 {
47 switch (memc->distribution)
48 {
49 case MEMCACHED_DISTRIBUTION_CONSISTENT:
50 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA:
51 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY:
52 case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED:
53 return true;
54
55 case MEMCACHED_DISTRIBUTION_MODULA:
56 case MEMCACHED_DISTRIBUTION_RANDOM:
57 case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET:
58 case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX:
59 break;
60 }
61
62 return false;
63 }
64
65 /*
66 This function is used to modify the behavior of running client.
67
68 We quit all connections so we can reset the sockets.
69 */
70
71 memcached_return_t memcached_behavior_set(memcached_st *shell,
72 const memcached_behavior_t flag,
73 uint64_t data)
74 {
75 Memcached* ptr= memcached2Memcached(shell);
76 if (ptr == NULL)
77 {
78 return MEMCACHED_INVALID_ARGUMENTS;
79 }
80
81 switch (flag)
82 {
83 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS:
84 ptr->number_of_replicas= (uint32_t)data;
85 break;
86
87 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK:
88 ptr->io_msg_watermark= (uint32_t) data;
89 break;
90
91 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK:
92 ptr->io_bytes_watermark= (uint32_t)data;
93 break;
94
95 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH:
96 ptr->io_key_prefetch = (uint32_t)data;
97 break;
98
99 case MEMCACHED_BEHAVIOR_SND_TIMEOUT:
100 ptr->snd_timeout= (int32_t)data;
101 break;
102
103 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT:
104 ptr->rcv_timeout= (int32_t)data;
105 break;
106
107 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS:
108 ptr->flags.auto_eject_hosts= bool(data);
109
110 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT:
111 if (data == 0)
112 {
113 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
114 memcached_literal_param("MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT requires a value greater then zero."));
115 }
116 ptr->server_failure_limit= uint32_t(data);
117 break;
118
119 case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT:
120 ptr->server_timeout_limit= uint32_t(data);
121 break;
122
123 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL:
124 send_quit(ptr); // We need t shutdown all of the connections to make sure we do the correct protocol
125 if (data)
126 {
127 ptr->flags.verify_key= false;
128 }
129 ptr->flags.binary_protocol= bool(data);
130 break;
131
132 case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
133 ptr->flags.support_cas= bool(data);
134 break;
135
136 case MEMCACHED_BEHAVIOR_NO_BLOCK:
137 ptr->flags.no_block= bool(data);
138 send_quit(ptr);
139 break;
140
141 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
142 if (memcached_is_udp(ptr))
143 {
144 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
145 memcached_literal_param("MEMCACHED_BEHAVIOR_BUFFER_REQUESTS cannot be set while MEMCACHED_BEHAVIOR_USE_UDP is enabled."));
146 }
147 ptr->flags.buffer_requests= bool(data);
148 send_quit(ptr);
149 break;
150
151 case MEMCACHED_BEHAVIOR_USE_UDP:
152 send_quit(ptr); // We need t shutdown all of the connections to make sure we do the correct protocol
153 ptr->flags.use_udp= bool(data);
154 if (bool(data))
155 {
156 ptr->flags.reply= false;
157 ptr->flags.buffer_requests= false;
158 }
159 else
160 {
161 ptr->flags.reply= true;
162 }
163 break;
164
165 case MEMCACHED_BEHAVIOR_TCP_NODELAY:
166 ptr->flags.tcp_nodelay= bool(data);
167 send_quit(ptr);
168 break;
169
170 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE:
171 ptr->flags.tcp_keepalive= bool(data);
172 send_quit(ptr);
173 break;
174
175 case MEMCACHED_BEHAVIOR_DISTRIBUTION:
176 return memcached_behavior_set_distribution(ptr, (memcached_server_distribution_t)data);
177
178 case MEMCACHED_BEHAVIOR_KETAMA:
179 {
180 if (data) // Turn on
181 {
182 return memcached_behavior_set_distribution(ptr, MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA);
183 }
184
185 return memcached_behavior_set_distribution(ptr, MEMCACHED_DISTRIBUTION_MODULA);
186 }
187
188 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED:
189 {
190 if (bool(data) == false)
191 {
192 return memcached_behavior_set(ptr, MEMCACHED_BEHAVIOR_KETAMA, true);
193 }
194
195 (void)memcached_behavior_set_key_hash(ptr, MEMCACHED_HASH_MD5);
196 (void)memcached_behavior_set_distribution_hash(ptr, MEMCACHED_HASH_MD5);
197 /**
198 @note We try to keep the same distribution going. This should be deprecated and rewritten.
199 */
200 return memcached_behavior_set_distribution(ptr, MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED);
201 }
202
203 case MEMCACHED_BEHAVIOR_HASH:
204 return memcached_behavior_set_key_hash(ptr, (memcached_hash_t)(data));
205
206 case MEMCACHED_BEHAVIOR_KETAMA_HASH:
207 return memcached_behavior_set_distribution_hash(ptr, (memcached_hash_t)(data));
208
209 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
210 return memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT,
211 memcached_literal_param("MEMCACHED_BEHAVIOR_CACHE_LOOKUPS has been deprecated."));
212
213 case MEMCACHED_BEHAVIOR_VERIFY_KEY:
214 if (ptr->flags.binary_protocol)
215 {
216 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
217 memcached_literal_param("MEMCACHED_BEHAVIOR_VERIFY_KEY if the binary protocol has been enabled."));
218 }
219 ptr->flags.verify_key= bool(data);
220 break;
221
222 case MEMCACHED_BEHAVIOR_SORT_HOSTS:
223 {
224 ptr->flags.use_sort_hosts= bool(data);
225 return run_distribution(ptr);
226 }
227
228 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
229 ptr->poll_timeout= (int32_t)data;
230 break;
231
232 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
233 ptr->connect_timeout= (int32_t)data;
234 break;
235
236 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
237 ptr->retry_timeout= int32_t(data);
238 break;
239
240 case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT:
241 ptr->dead_timeout= int32_t(data);
242 break;
243
244 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
245 ptr->send_size= (int32_t)data;
246 send_quit(ptr);
247 break;
248
249 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
250 ptr->recv_size= (int32_t)data;
251 send_quit(ptr);
252 break;
253
254 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE:
255 ptr->tcp_keepidle= (uint32_t)data;
256 send_quit(ptr);
257 break;
258
259 case MEMCACHED_BEHAVIOR_USER_DATA:
260 return memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT,
261 memcached_literal_param("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
262
263 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY:
264 ptr->flags.hash_with_namespace= bool(data);
265 break;
266
267 case MEMCACHED_BEHAVIOR_NOREPLY:
268 if (memcached_is_udp(ptr) and bool(data) == false)
269 {
270 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
271 memcached_literal_param("MEMCACHED_BEHAVIOR_NOREPLY cannot be disabled while MEMCACHED_BEHAVIOR_USE_UDP is enabled."));
272 }
273 // We reverse the logic here to make it easier to understand throughout the
274 // code.
275 ptr->flags.reply= bool(data) ? false : true;
276 break;
277
278 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS:
279 ptr->flags.auto_eject_hosts= bool(data);
280 break;
281
282 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ:
283 srandom((uint32_t) time(NULL));
284 ptr->flags.randomize_replica_read= bool(data);
285 break;
286
287 case MEMCACHED_BEHAVIOR_CORK:
288 return memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT,
289 memcached_literal_param("MEMCACHED_BEHAVIOR_CORK is now incorporated into the driver by default."));
290
291 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE:
292 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
293 memcached_literal_param("MEMCACHED_BEHAVIOR_LOAD_FROM_FILE can not be set with memcached_behavior_set()"));
294
295 case MEMCACHED_BEHAVIOR_MAX:
296 default:
297 /* Shouldn't get here */
298 assert_msg(0, "Invalid behavior passed to memcached_behavior_set()");
299 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
300 memcached_literal_param("Invalid behavior passed to memcached_behavior_set()"));
301 }
302
303 return MEMCACHED_SUCCESS;
304 }
305
306 bool _is_auto_eject_host(const memcached_st *ptr)
307 {
308 return ptr->flags.auto_eject_hosts;
309 }
310
311 uint64_t memcached_behavior_get(memcached_st *shell,
312 const memcached_behavior_t flag)
313 {
314 Memcached* ptr= memcached2Memcached(shell);
315 if (ptr == NULL)
316 {
317 return MEMCACHED_INVALID_ARGUMENTS;
318 }
319
320 switch (flag)
321 {
322 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS:
323 return ptr->number_of_replicas;
324
325 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK:
326 return ptr->io_msg_watermark;
327
328 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK:
329 return ptr->io_bytes_watermark;
330
331 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH:
332 return ptr->io_key_prefetch;
333
334 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL:
335 return ptr->flags.binary_protocol;
336
337 case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
338 return ptr->flags.support_cas;
339
340 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
341 return true;
342
343 case MEMCACHED_BEHAVIOR_NO_BLOCK:
344 return ptr->flags.no_block;
345
346 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
347 return ptr->flags.buffer_requests;
348
349 case MEMCACHED_BEHAVIOR_USE_UDP:
350 return memcached_is_udp(ptr);
351
352 case MEMCACHED_BEHAVIOR_TCP_NODELAY:
353 return ptr->flags.tcp_nodelay;
354
355 case MEMCACHED_BEHAVIOR_VERIFY_KEY:
356 return ptr->flags.verify_key;
357
358 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED:
359 if (memcached_is_consistent_distribution(ptr))
360 {
361 return memcached_is_weighted_ketama(ptr);
362 }
363 return false;
364
365 case MEMCACHED_BEHAVIOR_DISTRIBUTION:
366 return ptr->distribution;
367
368 case MEMCACHED_BEHAVIOR_KETAMA:
369 return memcached_is_consistent_distribution(ptr);
370
371 case MEMCACHED_BEHAVIOR_HASH:
372 return hashkit_get_function(&ptr->hashkit);
373
374 case MEMCACHED_BEHAVIOR_KETAMA_HASH:
375 return hashkit_get_function(&ptr->hashkit);
376
377 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS:
378 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT:
379 return ptr->server_failure_limit;
380
381 case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT:
382 return ptr->server_timeout_limit;
383
384 case MEMCACHED_BEHAVIOR_SORT_HOSTS:
385 return ptr->flags.use_sort_hosts;
386
387 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
388 return (uint64_t)ptr->poll_timeout;
389
390 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
391 return (uint64_t)ptr->connect_timeout;
392
393 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
394 return (uint64_t)ptr->retry_timeout;
395
396 case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT:
397 return uint64_t(ptr->dead_timeout);
398
399 case MEMCACHED_BEHAVIOR_SND_TIMEOUT:
400 return (uint64_t)ptr->snd_timeout;
401
402 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT:
403 return (uint64_t)ptr->rcv_timeout;
404
405 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE:
406 return (uint64_t)ptr->tcp_keepidle;
407
408 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
409 {
410 int sock_size= 0;
411 socklen_t sock_length= sizeof(int);
412
413 if (ptr->send_size != -1) // If value is -1 then we are using the default
414 {
415 return (uint64_t) ptr->send_size;
416 }
417
418 memcached_instance_st* instance= memcached_instance_fetch(ptr, 0);
419
420 if (instance) // If we have an instance we test, otherwise we just set and pray
421 {
422 /* REFACTOR */
423 /* We just try the first host, and if it is down we return zero */
424 if (memcached_failed(memcached_connect(instance)))
425 {
426 return 0;
427 }
428
429 if (memcached_failed(memcached_io_wait_for_write(instance)))
430 {
431 return 0;
432 }
433
434 if (getsockopt(instance->fd, SOL_SOCKET, SO_SNDBUF, (char*)&sock_size, &sock_length) < 0)
435 {
436 memcached_set_errno(*ptr, get_socket_errno(), MEMCACHED_AT);
437 return 0; /* Zero means error */
438 }
439 }
440
441 return (uint64_t) sock_size;
442 }
443
444 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
445 {
446 int sock_size= 0;
447 socklen_t sock_length= sizeof(int);
448
449 if (ptr->recv_size != -1) // If value is -1 then we are using the default
450 return (uint64_t) ptr->recv_size;
451
452 memcached_instance_st* instance= memcached_instance_fetch(ptr, 0);
453
454 /**
455 @note REFACTOR
456 */
457 if (instance)
458 {
459 /* We just try the first host, and if it is down we return zero */
460 if (memcached_failed(memcached_connect(instance)))
461 {
462 return 0;
463 }
464
465 if (memcached_failed(memcached_io_wait_for_write(instance)))
466 {
467 return 0;
468 }
469
470 if (getsockopt(instance->fd, SOL_SOCKET, SO_RCVBUF, (char*)&sock_size, &sock_length) < 0)
471 {
472 memcached_set_errno(*ptr, get_socket_errno(), MEMCACHED_AT);
473 return 0; /* Zero means error */
474 }
475 }
476
477 return (uint64_t) sock_size;
478 }
479
480 case MEMCACHED_BEHAVIOR_USER_DATA:
481 memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT,
482 memcached_literal_param("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
483 return 0;
484
485 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY:
486 return ptr->flags.hash_with_namespace;
487
488 case MEMCACHED_BEHAVIOR_NOREPLY:
489 return ptr->flags.reply ? false : true;
490
491 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS:
492 return ptr->flags.auto_eject_hosts;
493
494 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ:
495 return ptr->flags.randomize_replica_read;
496
497 case MEMCACHED_BEHAVIOR_CORK:
498 #ifdef HAVE_MSG_MORE
499 return true;
500 #else
501 return false;
502 #endif
503
504 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE:
505 return ptr->flags.tcp_keepalive;
506
507 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE:
508 return bool(memcached_parse_filename(ptr));
509
510 case MEMCACHED_BEHAVIOR_MAX:
511 default:
512 assert_msg(0, "Invalid behavior passed to memcached_behavior_get()");
513 return 0;
514 }
515
516 /* NOTREACHED */
517 }
518
519
520 memcached_return_t memcached_behavior_set_distribution(memcached_st *shell, memcached_server_distribution_t type)
521 {
522 Memcached* ptr= memcached2Memcached(shell);
523 if (ptr)
524 {
525 switch (type)
526 {
527 case MEMCACHED_DISTRIBUTION_MODULA:
528 break;
529
530 case MEMCACHED_DISTRIBUTION_CONSISTENT:
531 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA:
532 memcached_set_weighted_ketama(ptr, false);
533 break;
534
535 case MEMCACHED_DISTRIBUTION_RANDOM:
536 break;
537
538 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY:
539 break;
540
541 case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED:
542 memcached_set_weighted_ketama(ptr, true);
543 break;
544
545 case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET:
546 break;
547
548 default:
549 case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX:
550 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
551 memcached_literal_param("Invalid memcached_server_distribution_t"));
552 }
553 ptr->distribution= type;
554
555 return run_distribution(ptr);
556 }
557
558 return MEMCACHED_INVALID_ARGUMENTS;
559 }
560
561
562 memcached_server_distribution_t memcached_behavior_get_distribution(memcached_st *shell)
563 {
564 Memcached* ptr= memcached2Memcached(shell);
565 if (ptr)
566 {
567 return ptr->distribution;
568 }
569
570 return MEMCACHED_DISTRIBUTION_CONSISTENT_MAX;
571 }
572
573 memcached_return_t memcached_behavior_set_key_hash(memcached_st *shell, memcached_hash_t type)
574 {
575 Memcached* ptr= memcached2Memcached(shell);
576 if (ptr)
577 {
578 if (hashkit_success(hashkit_set_function(&ptr->hashkit, (hashkit_hash_algorithm_t)type)))
579 {
580 return MEMCACHED_SUCCESS;
581 }
582
583 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
584 memcached_literal_param("Invalid memcached_hash_t()"));
585 }
586
587 return MEMCACHED_INVALID_ARGUMENTS;
588 }
589
590 memcached_hash_t memcached_behavior_get_key_hash(memcached_st *shell)
591 {
592 Memcached* ptr= memcached2Memcached(shell);
593 if (ptr)
594 {
595 return (memcached_hash_t)hashkit_get_function(&ptr->hashkit);
596 }
597
598 return MEMCACHED_HASH_MAX;
599 }
600
601 memcached_return_t memcached_behavior_set_distribution_hash(memcached_st *shell, memcached_hash_t type)
602 {
603 Memcached* ptr= memcached2Memcached(shell);
604 if (ptr)
605 {
606 if (hashkit_success(hashkit_set_distribution_function(&ptr->hashkit, (hashkit_hash_algorithm_t)type)))
607 {
608 return MEMCACHED_SUCCESS;
609 }
610
611 return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
612 memcached_literal_param("Invalid memcached_hash_t()"));
613 }
614
615 return MEMCACHED_INVALID_ARGUMENTS;
616 }
617
618 memcached_hash_t memcached_behavior_get_distribution_hash(memcached_st *shell)
619 {
620 Memcached* ptr= memcached2Memcached(shell);
621 if (ptr)
622 {
623 return (memcached_hash_t)hashkit_get_function(&ptr->hashkit);
624 }
625
626 return MEMCACHED_HASH_MAX;
627 }
628
629 const char *libmemcached_string_behavior(const memcached_behavior_t flag)
630 {
631 switch (flag)
632 {
633 case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT: return "MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT";
634 case MEMCACHED_BEHAVIOR_NO_BLOCK: return "MEMCACHED_BEHAVIOR_NO_BLOCK";
635 case MEMCACHED_BEHAVIOR_TCP_NODELAY: return "MEMCACHED_BEHAVIOR_TCP_NODELAY";
636 case MEMCACHED_BEHAVIOR_HASH: return "MEMCACHED_BEHAVIOR_HASH";
637 case MEMCACHED_BEHAVIOR_KETAMA: return "MEMCACHED_BEHAVIOR_KETAMA";
638 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE: return "MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE";
639 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE: return "MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE";
640 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS: return "MEMCACHED_BEHAVIOR_CACHE_LOOKUPS";
641 case MEMCACHED_BEHAVIOR_SUPPORT_CAS: return "MEMCACHED_BEHAVIOR_SUPPORT_CAS";
642 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT: return "MEMCACHED_BEHAVIOR_POLL_TIMEOUT";
643 case MEMCACHED_BEHAVIOR_DISTRIBUTION: return "MEMCACHED_BEHAVIOR_DISTRIBUTION";
644 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS: return "MEMCACHED_BEHAVIOR_BUFFER_REQUESTS";
645 case MEMCACHED_BEHAVIOR_USER_DATA: return "MEMCACHED_BEHAVIOR_USER_DATA";
646 case MEMCACHED_BEHAVIOR_SORT_HOSTS: return "MEMCACHED_BEHAVIOR_SORT_HOSTS";
647 case MEMCACHED_BEHAVIOR_VERIFY_KEY: return "MEMCACHED_BEHAVIOR_VERIFY_KEY";
648 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT: return "MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT";
649 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT: return "MEMCACHED_BEHAVIOR_RETRY_TIMEOUT";
650 case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT: return "MEMCACHED_BEHAVIOR_DEAD_TIMEOUT";
651 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED: return "MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED";
652 case MEMCACHED_BEHAVIOR_KETAMA_HASH: return "MEMCACHED_BEHAVIOR_KETAMA_HASH";
653 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL: return "MEMCACHED_BEHAVIOR_BINARY_PROTOCOL";
654 case MEMCACHED_BEHAVIOR_SND_TIMEOUT: return "MEMCACHED_BEHAVIOR_SND_TIMEOUT";
655 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT: return "MEMCACHED_BEHAVIOR_RCV_TIMEOUT";
656 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT: return "MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT";
657 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK: return "MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK";
658 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK: return "MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK";
659 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH: return "MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH";
660 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY: return "MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY";
661 case MEMCACHED_BEHAVIOR_NOREPLY: return "MEMCACHED_BEHAVIOR_NOREPLY";
662 case MEMCACHED_BEHAVIOR_USE_UDP: return "MEMCACHED_BEHAVIOR_USE_UDP";
663 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS: return "MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS";
664 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS: return "MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS";
665 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS: return "MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS";
666 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ: return "MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ";
667 case MEMCACHED_BEHAVIOR_CORK: return "MEMCACHED_BEHAVIOR_CORK";
668 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE: return "MEMCACHED_BEHAVIOR_TCP_KEEPALIVE";
669 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE: return "MEMCACHED_BEHAVIOR_TCP_KEEPIDLE";
670 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE: return "MEMCACHED_BEHAVIOR_LOAD_FROM_FILE";
671 default:
672 case MEMCACHED_BEHAVIOR_MAX: return "INVALID memcached_behavior_t";
673 }
674 }
675
676 const char *libmemcached_string_distribution(const memcached_server_distribution_t flag)
677 {
678 switch (flag)
679 {
680 case MEMCACHED_DISTRIBUTION_MODULA: return "MEMCACHED_DISTRIBUTION_MODULA";
681 case MEMCACHED_DISTRIBUTION_CONSISTENT: return "MEMCACHED_DISTRIBUTION_CONSISTENT";
682 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA: return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA";
683 case MEMCACHED_DISTRIBUTION_RANDOM: return "MEMCACHED_DISTRIBUTION_RANDOM";
684 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY: return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY";
685 case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED: return "MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED";
686 case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET: return "MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET";
687 default:
688 case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX: return "INVALID memcached_server_distribution_t";
689 }
690 }
691
692 memcached_return_t memcached_bucket_set(memcached_st *shell,
693 const uint32_t *host_map,
694 const uint32_t *forward_map,
695 const uint32_t buckets,
696 const uint32_t replicas)
697 {
698 Memcached* self= memcached2Memcached(shell);
699 memcached_return_t rc;
700
701 if (self == NULL)
702 {
703 return MEMCACHED_INVALID_ARGUMENTS;
704 }
705
706 if (host_map == NULL)
707 {
708 return MEMCACHED_INVALID_ARGUMENTS;
709 }
710
711 memcached_server_distribution_t old= memcached_behavior_get_distribution(self);
712
713 if (memcached_failed(rc =memcached_behavior_set_distribution(self, MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET)))
714 {
715 return rc;
716 }
717
718 if (memcached_failed(rc= memcached_virtual_bucket_create(self, host_map, forward_map, buckets, replicas)))
719 {
720 memcached_behavior_set_distribution(self, old);
721 }
722
723 return rc;
724 }
Resurrection of libmemcached