2 +--------------------------------------------------------------------+
3 | libmemcached-awesome - C/C++ Client Library for memcached |
4 +--------------------------------------------------------------------+
5 | Redistribution and use in source and binary forms, with or without |
6 | modification, are permitted under the terms of the BSD license. |
7 | You should have received a copy of the license in a bundled file |
8 | named LICENSE; in case you did not receive a copy you can review |
9 | the terms online at: https://opensource.org/licenses/BSD-3-Clause |
10 +--------------------------------------------------------------------+
11 | Copyright (c) 2006-2014 Brian Aker https://datadifferential.com/ |
12 | Copyright (c) 2020-2021 Michael Wallner https://awesome.co/ |
13 +--------------------------------------------------------------------+
16 #include "libmemcached/common.h"
17 #include "libmemcached/options.hpp"
18 #include "libmemcached/virtual_bucket.h"
19 #include "p9y/random.hpp"
22 #include <sys/types.h>
24 bool memcached_is_consistent_distribution(const Memcached
*memc
) {
25 switch (memc
->distribution
) {
26 case MEMCACHED_DISTRIBUTION_CONSISTENT
:
27 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
:
28 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY
:
29 case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED
:
32 case MEMCACHED_DISTRIBUTION_MODULA
:
33 case MEMCACHED_DISTRIBUTION_RANDOM
:
34 case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET
:
35 case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX
:
43 This function is used to modify the behavior of running client.
45 We quit all connections so we can reset the sockets.
48 memcached_return_t
memcached_behavior_set(memcached_st
*shell
, const memcached_behavior_t flag
,
50 Memcached
*ptr
= memcached2Memcached(shell
);
52 return MEMCACHED_INVALID_ARGUMENTS
;
56 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
:
57 ptr
->number_of_replicas
= (uint32_t) data
;
60 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
:
61 ptr
->io_msg_watermark
= (uint32_t) data
;
64 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
:
65 ptr
->io_bytes_watermark
= (uint32_t) data
;
68 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
:
69 ptr
->io_key_prefetch
= (uint32_t) data
;
72 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
:
73 ptr
->snd_timeout
= (int32_t) data
;
76 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
:
77 ptr
->rcv_timeout
= (int32_t) data
;
80 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
:
81 ptr
->flags
.auto_eject_hosts
= bool(data
);
84 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
:
86 return memcached_set_error(
87 *ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
88 memcached_literal_param(
89 "MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT requires a value greater then zero."));
91 ptr
->server_failure_limit
= uint32_t(data
);
94 case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT
:
95 ptr
->server_timeout_limit
= uint32_t(data
);
98 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
:
100 ptr
); // We need t shutdown all of the connections to make sure we do the correct protocol
102 ptr
->flags
.verify_key
= false;
104 ptr
->flags
.binary_protocol
= bool(data
);
107 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
:
108 ptr
->flags
.support_cas
= bool(data
);
111 case MEMCACHED_BEHAVIOR_NO_BLOCK
:
112 ptr
->flags
.no_block
= bool(data
);
116 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
:
117 if (memcached_is_udp(ptr
)) {
118 return memcached_set_error(
119 *ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
120 memcached_literal_param("MEMCACHED_BEHAVIOR_BUFFER_REQUESTS cannot be set while "
121 "MEMCACHED_BEHAVIOR_USE_UDP is enabled."));
123 ptr
->flags
.buffer_requests
= bool(data
);
127 case MEMCACHED_BEHAVIOR_USE_UDP
:
129 ptr
); // We need t shutdown all of the connections to make sure we do the correct protocol
130 ptr
->flags
.use_udp
= bool(data
);
132 ptr
->flags
.reply
= false;
133 ptr
->flags
.buffer_requests
= false;
135 ptr
->flags
.reply
= true;
139 case MEMCACHED_BEHAVIOR_TCP_NODELAY
:
140 ptr
->flags
.tcp_nodelay
= bool(data
);
144 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
:
145 ptr
->flags
.tcp_keepalive
= bool(data
);
149 case MEMCACHED_BEHAVIOR_DISTRIBUTION
:
150 return memcached_behavior_set_distribution(ptr
, (memcached_server_distribution_t
) data
);
152 case MEMCACHED_BEHAVIOR_KETAMA
: {
155 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
);
158 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_MODULA
);
161 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
: {
162 if (bool(data
) == false) {
163 return memcached_behavior_set(ptr
, MEMCACHED_BEHAVIOR_KETAMA
, true);
166 (void) memcached_behavior_set_key_hash(ptr
, MEMCACHED_HASH_MD5
);
167 (void) memcached_behavior_set_distribution_hash(ptr
, MEMCACHED_HASH_MD5
);
169 @note We try to keep the same distribution going. This should be deprecated and rewritten.
171 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED
);
174 case MEMCACHED_BEHAVIOR_HASH
:
175 return memcached_behavior_set_key_hash(ptr
, (memcached_hash_t
)(data
));
177 case MEMCACHED_BEHAVIOR_KETAMA_HASH
:
178 return memcached_behavior_set_distribution_hash(ptr
, (memcached_hash_t
)(data
));
180 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
:
181 return memcached_set_error(
182 *ptr
, MEMCACHED_DEPRECATED
, MEMCACHED_AT
,
183 memcached_literal_param("MEMCACHED_BEHAVIOR_CACHE_LOOKUPS has been deprecated."));
185 case MEMCACHED_BEHAVIOR_VERIFY_KEY
:
186 if (ptr
->flags
.binary_protocol
) {
187 return memcached_set_error(
188 *ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
189 memcached_literal_param(
190 "MEMCACHED_BEHAVIOR_VERIFY_KEY if the binary protocol has been enabled."));
192 ptr
->flags
.verify_key
= bool(data
);
195 case MEMCACHED_BEHAVIOR_SORT_HOSTS
: {
196 ptr
->flags
.use_sort_hosts
= bool(data
);
197 return run_distribution(ptr
);
200 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
:
201 ptr
->poll_timeout
= (int32_t) data
;
204 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
:
205 ptr
->connect_timeout
= (int32_t) data
;
208 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
:
209 ptr
->retry_timeout
= int32_t(data
);
212 case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT
:
213 ptr
->dead_timeout
= int32_t(data
);
216 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
:
217 ptr
->send_size
= (int32_t) data
;
221 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
:
222 ptr
->recv_size
= (int32_t) data
;
226 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
:
227 ptr
->tcp_keepidle
= (uint32_t) data
;
231 case MEMCACHED_BEHAVIOR_USER_DATA
:
232 return memcached_set_error(*ptr
, MEMCACHED_DEPRECATED
, MEMCACHED_AT
,
233 memcached_literal_param("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
235 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
:
236 ptr
->flags
.hash_with_namespace
= bool(data
);
239 case MEMCACHED_BEHAVIOR_NOREPLY
:
240 if (memcached_is_udp(ptr
) and bool(data
) == false) {
241 return memcached_set_error(
242 *ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
243 memcached_literal_param("MEMCACHED_BEHAVIOR_NOREPLY cannot be disabled while "
244 "MEMCACHED_BEHAVIOR_USE_UDP is enabled."));
246 // We reverse the logic here to make it easier to understand throughout the
248 ptr
->flags
.reply
= bool(data
) ? false : true;
251 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
:
252 ptr
->flags
.auto_eject_hosts
= bool(data
);
255 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
:
256 srandom((uint32_t) time(NULL
));
257 ptr
->flags
.randomize_replica_read
= bool(data
);
260 case MEMCACHED_BEHAVIOR_CORK
:
261 return memcached_set_error(
262 *ptr
, MEMCACHED_DEPRECATED
, MEMCACHED_AT
,
263 memcached_literal_param(
264 "MEMCACHED_BEHAVIOR_CORK is now incorporated into the driver by default."));
266 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
:
267 return memcached_set_error(
268 *ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
269 memcached_literal_param(
270 "MEMCACHED_BEHAVIOR_LOAD_FROM_FILE can not be set with memcached_behavior_set()"));
272 case MEMCACHED_BEHAVIOR_MAX
:
274 /* Shouldn't get here */
275 assert_msg(0, "Invalid behavior passed to memcached_behavior_set()");
276 return memcached_set_error(
277 *ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
278 memcached_literal_param("Invalid behavior passed to memcached_behavior_set()"));
281 return MEMCACHED_SUCCESS
;
284 bool _is_auto_eject_host(const memcached_st
*ptr
) {
285 return ptr
->flags
.auto_eject_hosts
;
288 uint64_t memcached_behavior_get(memcached_st
*shell
, const memcached_behavior_t flag
) {
289 Memcached
*ptr
= memcached2Memcached(shell
);
291 return MEMCACHED_INVALID_ARGUMENTS
;
295 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
:
296 return ptr
->number_of_replicas
;
298 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
:
299 return ptr
->io_msg_watermark
;
301 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
:
302 return ptr
->io_bytes_watermark
;
304 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
:
305 return ptr
->io_key_prefetch
;
307 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
:
308 return ptr
->flags
.binary_protocol
;
310 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
:
311 return ptr
->flags
.support_cas
;
313 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
:
316 case MEMCACHED_BEHAVIOR_NO_BLOCK
:
317 return ptr
->flags
.no_block
;
319 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
:
320 return ptr
->flags
.buffer_requests
;
322 case MEMCACHED_BEHAVIOR_USE_UDP
:
323 return memcached_is_udp(ptr
);
325 case MEMCACHED_BEHAVIOR_TCP_NODELAY
:
326 return ptr
->flags
.tcp_nodelay
;
328 case MEMCACHED_BEHAVIOR_VERIFY_KEY
:
329 return ptr
->flags
.verify_key
;
331 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
:
332 if (memcached_is_consistent_distribution(ptr
)) {
333 return memcached_is_weighted_ketama(ptr
);
337 case MEMCACHED_BEHAVIOR_DISTRIBUTION
:
338 return ptr
->distribution
;
340 case MEMCACHED_BEHAVIOR_KETAMA
:
341 return memcached_is_consistent_distribution(ptr
);
343 case MEMCACHED_BEHAVIOR_HASH
:
344 return hashkit_get_function(&ptr
->hashkit
);
346 case MEMCACHED_BEHAVIOR_KETAMA_HASH
:
347 return hashkit_get_distribution_function(&ptr
->hashkit
);
349 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
:
350 return ptr
->flags
.auto_eject_hosts
;
352 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
:
353 return ptr
->server_failure_limit
;
355 case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT
:
356 return ptr
->server_timeout_limit
;
358 case MEMCACHED_BEHAVIOR_SORT_HOSTS
:
359 return ptr
->flags
.use_sort_hosts
;
361 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
:
362 return (uint64_t) ptr
->poll_timeout
;
364 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
:
365 return (uint64_t) ptr
->connect_timeout
;
367 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
:
368 return (uint64_t) ptr
->retry_timeout
;
370 case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT
:
371 return uint64_t(ptr
->dead_timeout
);
373 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
:
374 return (uint64_t) ptr
->snd_timeout
;
376 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
:
377 return (uint64_t) ptr
->rcv_timeout
;
379 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
:
380 return (uint64_t) ptr
->tcp_keepidle
;
382 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
: {
384 socklen_t sock_length
= sizeof(int);
386 if (ptr
->send_size
!= -1) // If value is -1 then we are using the default
388 return (uint64_t) ptr
->send_size
;
391 memcached_instance_st
*instance
= memcached_instance_fetch(ptr
, 0);
393 if (instance
) // If we have an instance we test, otherwise we just set and pray
396 /* We just try the first host, and if it is down we return zero */
397 if (memcached_failed(memcached_connect(instance
))) {
401 if (memcached_failed(memcached_io_wait_for_write(instance
))) {
405 if (getsockopt(instance
->fd
, SOL_SOCKET
, SO_SNDBUF
, (char *) &sock_size
, &sock_length
) < 0) {
406 memcached_set_errno(*ptr
, get_socket_errno(), MEMCACHED_AT
);
407 return 0; /* Zero means error */
411 return (uint64_t) sock_size
;
414 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
: {
416 socklen_t sock_length
= sizeof(int);
418 if (ptr
->recv_size
!= -1) // If value is -1 then we are using the default
419 return (uint64_t) ptr
->recv_size
;
421 memcached_instance_st
*instance
= memcached_instance_fetch(ptr
, 0);
427 /* We just try the first host, and if it is down we return zero */
428 if (memcached_failed(memcached_connect(instance
))) {
432 if (memcached_failed(memcached_io_wait_for_write(instance
))) {
436 if (getsockopt(instance
->fd
, SOL_SOCKET
, SO_RCVBUF
, (char *) &sock_size
, &sock_length
) < 0) {
437 memcached_set_errno(*ptr
, get_socket_errno(), MEMCACHED_AT
);
438 return 0; /* Zero means error */
442 return (uint64_t) sock_size
;
445 case MEMCACHED_BEHAVIOR_USER_DATA
:
446 memcached_set_error(*ptr
, MEMCACHED_DEPRECATED
, MEMCACHED_AT
,
447 memcached_literal_param("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
450 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
:
451 return ptr
->flags
.hash_with_namespace
;
453 case MEMCACHED_BEHAVIOR_NOREPLY
:
454 return ptr
->flags
.reply
? false : true;
456 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
:
457 return ptr
->flags
.auto_eject_hosts
;
459 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
:
460 return ptr
->flags
.randomize_replica_read
;
462 case MEMCACHED_BEHAVIOR_CORK
:
469 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
:
470 return ptr
->flags
.tcp_keepalive
;
472 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
:
473 return bool(memcached_parse_filename(ptr
));
475 case MEMCACHED_BEHAVIOR_MAX
:
477 assert_msg(0, "Invalid behavior passed to memcached_behavior_get()");
484 memcached_return_t
memcached_behavior_set_distribution(memcached_st
*shell
,
485 memcached_server_distribution_t type
) {
486 Memcached
*ptr
= memcached2Memcached(shell
);
489 case MEMCACHED_DISTRIBUTION_MODULA
:
492 case MEMCACHED_DISTRIBUTION_CONSISTENT
:
493 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
:
494 memcached_set_weighted_ketama(ptr
, false);
497 case MEMCACHED_DISTRIBUTION_RANDOM
:
500 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY
:
503 case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED
:
504 memcached_set_weighted_ketama(ptr
, true);
507 case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET
:
511 case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX
:
512 return memcached_set_error(
513 *ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
514 memcached_literal_param("Invalid memcached_server_distribution_t"));
516 ptr
->distribution
= type
;
518 return run_distribution(ptr
);
521 return MEMCACHED_INVALID_ARGUMENTS
;
524 memcached_server_distribution_t
memcached_behavior_get_distribution(memcached_st
*shell
) {
525 Memcached
*ptr
= memcached2Memcached(shell
);
527 return ptr
->distribution
;
530 return MEMCACHED_DISTRIBUTION_CONSISTENT_MAX
;
533 memcached_return_t
memcached_behavior_set_key_hash(memcached_st
*shell
, memcached_hash_t type
) {
534 Memcached
*ptr
= memcached2Memcached(shell
);
536 if (hashkit_success(hashkit_set_function(&ptr
->hashkit
, (hashkit_hash_algorithm_t
) type
))) {
537 return MEMCACHED_SUCCESS
;
540 return memcached_set_error(*ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
541 memcached_literal_param("Invalid memcached_hash_t()"));
544 return MEMCACHED_INVALID_ARGUMENTS
;
547 memcached_hash_t
memcached_behavior_get_key_hash(memcached_st
*shell
) {
548 Memcached
*ptr
= memcached2Memcached(shell
);
550 return (memcached_hash_t
) hashkit_get_function(&ptr
->hashkit
);
553 return MEMCACHED_HASH_MAX
;
556 memcached_return_t
memcached_behavior_set_distribution_hash(memcached_st
*shell
,
557 memcached_hash_t type
) {
558 Memcached
*ptr
= memcached2Memcached(shell
);
561 hashkit_set_distribution_function(&ptr
->hashkit
, (hashkit_hash_algorithm_t
) type
)))
563 return MEMCACHED_SUCCESS
;
566 return memcached_set_error(*ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
567 memcached_literal_param("Invalid memcached_hash_t()"));
570 return MEMCACHED_INVALID_ARGUMENTS
;
573 memcached_hash_t
memcached_behavior_get_distribution_hash(memcached_st
*shell
) {
574 Memcached
*ptr
= memcached2Memcached(shell
);
576 return (memcached_hash_t
) hashkit_get_function(&ptr
->hashkit
);
579 return MEMCACHED_HASH_MAX
;
582 const char *libmemcached_string_behavior(const memcached_behavior_t flag
) {
584 case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT
:
585 return "MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT";
586 case MEMCACHED_BEHAVIOR_NO_BLOCK
:
587 return "MEMCACHED_BEHAVIOR_NO_BLOCK";
588 case MEMCACHED_BEHAVIOR_TCP_NODELAY
:
589 return "MEMCACHED_BEHAVIOR_TCP_NODELAY";
590 case MEMCACHED_BEHAVIOR_HASH
:
591 return "MEMCACHED_BEHAVIOR_HASH";
592 case MEMCACHED_BEHAVIOR_KETAMA
:
593 return "MEMCACHED_BEHAVIOR_KETAMA";
594 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
:
595 return "MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE";
596 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
:
597 return "MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE";
598 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
:
599 return "MEMCACHED_BEHAVIOR_CACHE_LOOKUPS";
600 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
:
601 return "MEMCACHED_BEHAVIOR_SUPPORT_CAS";
602 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
:
603 return "MEMCACHED_BEHAVIOR_POLL_TIMEOUT";
604 case MEMCACHED_BEHAVIOR_DISTRIBUTION
:
605 return "MEMCACHED_BEHAVIOR_DISTRIBUTION";
606 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
:
607 return "MEMCACHED_BEHAVIOR_BUFFER_REQUESTS";
608 case MEMCACHED_BEHAVIOR_USER_DATA
:
609 return "MEMCACHED_BEHAVIOR_USER_DATA";
610 case MEMCACHED_BEHAVIOR_SORT_HOSTS
:
611 return "MEMCACHED_BEHAVIOR_SORT_HOSTS";
612 case MEMCACHED_BEHAVIOR_VERIFY_KEY
:
613 return "MEMCACHED_BEHAVIOR_VERIFY_KEY";
614 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
:
615 return "MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT";
616 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
:
617 return "MEMCACHED_BEHAVIOR_RETRY_TIMEOUT";
618 case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT
:
619 return "MEMCACHED_BEHAVIOR_DEAD_TIMEOUT";
620 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
:
621 return "MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED";
622 case MEMCACHED_BEHAVIOR_KETAMA_HASH
:
623 return "MEMCACHED_BEHAVIOR_KETAMA_HASH";
624 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
:
625 return "MEMCACHED_BEHAVIOR_BINARY_PROTOCOL";
626 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
:
627 return "MEMCACHED_BEHAVIOR_SND_TIMEOUT";
628 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
:
629 return "MEMCACHED_BEHAVIOR_RCV_TIMEOUT";
630 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
:
631 return "MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT";
632 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
:
633 return "MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK";
634 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
:
635 return "MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK";
636 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
:
637 return "MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH";
638 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
:
639 return "MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY";
640 case MEMCACHED_BEHAVIOR_NOREPLY
:
641 return "MEMCACHED_BEHAVIOR_NOREPLY";
642 case MEMCACHED_BEHAVIOR_USE_UDP
:
643 return "MEMCACHED_BEHAVIOR_USE_UDP";
644 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
:
645 return "MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS";
646 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
:
647 return "MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS";
648 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
:
649 return "MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS";
650 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
:
651 return "MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ";
652 case MEMCACHED_BEHAVIOR_CORK
:
653 return "MEMCACHED_BEHAVIOR_CORK";
654 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
:
655 return "MEMCACHED_BEHAVIOR_TCP_KEEPALIVE";
656 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
:
657 return "MEMCACHED_BEHAVIOR_TCP_KEEPIDLE";
658 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
:
659 return "MEMCACHED_BEHAVIOR_LOAD_FROM_FILE";
661 case MEMCACHED_BEHAVIOR_MAX
:
662 return "INVALID memcached_behavior_t";
666 const char *libmemcached_string_distribution(const memcached_server_distribution_t flag
) {
668 case MEMCACHED_DISTRIBUTION_MODULA
:
669 return "MEMCACHED_DISTRIBUTION_MODULA";
670 case MEMCACHED_DISTRIBUTION_CONSISTENT
:
671 return "MEMCACHED_DISTRIBUTION_CONSISTENT";
672 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
:
673 return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA";
674 case MEMCACHED_DISTRIBUTION_RANDOM
:
675 return "MEMCACHED_DISTRIBUTION_RANDOM";
676 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY
:
677 return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY";
678 case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED
:
679 return "MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED";
680 case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET
:
681 return "MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET";
683 case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX
:
684 return "INVALID memcached_server_distribution_t";
688 memcached_return_t
memcached_bucket_set(memcached_st
*shell
, const uint32_t *host_map
,
689 const uint32_t *forward_map
, const uint32_t buckets
,
690 const uint32_t replicas
) {
691 Memcached
*self
= memcached2Memcached(shell
);
692 memcached_return_t rc
;
695 return MEMCACHED_INVALID_ARGUMENTS
;
698 if (host_map
== NULL
) {
699 return MEMCACHED_INVALID_ARGUMENTS
;
702 memcached_server_distribution_t old
= memcached_behavior_get_distribution(self
);
704 if (memcached_failed(
705 rc
= memcached_behavior_set_distribution(self
, MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET
)))
710 if (memcached_failed(
711 rc
= memcached_virtual_bucket_create(self
, host_map
, forward_map
, buckets
, replicas
)))
713 memcached_behavior_set_distribution(self
, old
);