2 * Copyright (C) 2006-2009 Brian Aker
5 * Use and distribution licensed under the BSD license. See
6 * the COPYING file in the parent directory for full text.
8 * Summary: Change the behavior of the memcached connection.
12 #include <libmemcached/common.h>
13 #include <libmemcached/virtual_bucket.h>
16 #include <sys/types.h>
18 static bool set_flag(uint64_t data
)
21 return data
? true : false;
25 This function is used to modify the behavior of running client.
27 We quit all connections so we can reset the sockets.
30 memcached_return_t
memcached_behavior_set(memcached_st
*ptr
,
31 const memcached_behavior_t flag
,
35 return MEMCACHED_INVALID_ARGUMENTS
;
39 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
:
40 ptr
->number_of_replicas
= (uint32_t)data
;
43 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
:
44 ptr
->io_msg_watermark
= (uint32_t) data
;
47 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
:
48 ptr
->io_bytes_watermark
= (uint32_t)data
;
51 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
:
52 ptr
->io_key_prefetch
= (uint32_t)data
;
55 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
:
56 ptr
->snd_timeout
= (int32_t)data
;
59 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
:
60 ptr
->rcv_timeout
= (int32_t)data
;
63 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
:
64 ptr
->flags
.auto_eject_hosts
= set_flag(data
);
66 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
:
67 ptr
->server_failure_limit
= (uint32_t)data
;
70 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
:
71 send_quit(ptr
); // We need t shutdown all of the connections to make sure we do the correct protocol
74 ptr
->flags
.verify_key
= false;
76 ptr
->flags
.binary_protocol
= set_flag(data
);
79 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
:
80 ptr
->flags
.support_cas
= set_flag(data
);
83 case MEMCACHED_BEHAVIOR_NO_BLOCK
:
84 ptr
->flags
.no_block
= set_flag(data
);
88 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
:
89 ptr
->flags
.buffer_requests
= set_flag(data
);
93 case MEMCACHED_BEHAVIOR_USE_UDP
:
94 if (memcached_server_count(ptr
))
96 return MEMCACHED_FAILURE
;
98 ptr
->flags
.use_udp
= set_flag(data
);
101 ptr
->flags
.no_reply
= set_flag(data
);
105 case MEMCACHED_BEHAVIOR_TCP_NODELAY
:
106 ptr
->flags
.tcp_nodelay
= set_flag(data
);
110 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
:
111 ptr
->flags
.tcp_keepalive
= set_flag(data
);
115 case MEMCACHED_BEHAVIOR_DISTRIBUTION
:
116 return memcached_behavior_set_distribution(ptr
, (memcached_server_distribution_t
)data
);
118 case MEMCACHED_BEHAVIOR_KETAMA
:
121 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
);
123 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_MODULA
);
126 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
:
128 (void)memcached_behavior_set_key_hash(ptr
, MEMCACHED_HASH_MD5
);
129 (void)memcached_behavior_set_distribution_hash(ptr
, MEMCACHED_HASH_MD5
);
130 ptr
->ketama
.weighted
= set_flag(data
);
132 @note We try to keep the same distribution going. This should be deprecated and rewritten.
134 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
);
137 case MEMCACHED_BEHAVIOR_HASH
:
138 return memcached_behavior_set_key_hash(ptr
, (memcached_hash_t
)(data
));
140 case MEMCACHED_BEHAVIOR_KETAMA_HASH
:
141 return memcached_behavior_set_distribution_hash(ptr
, (memcached_hash_t
)(data
));
143 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
:
144 return memcached_set_error(*ptr
, MEMCACHED_DEPRECATED
, MEMCACHED_AT
,
145 memcached_literal_param("MEMCACHED_BEHAVIOR_CACHE_LOOKUPS has been deprecated."));
147 case MEMCACHED_BEHAVIOR_VERIFY_KEY
:
148 if (ptr
->flags
.binary_protocol
)
149 return memcached_set_error(*ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
150 memcached_literal_param("MEMCACHED_BEHAVIOR_VERIFY_KEY if the binary protocol has been enabled."));
151 ptr
->flags
.verify_key
= set_flag(data
);
154 case MEMCACHED_BEHAVIOR_SORT_HOSTS
:
156 ptr
->flags
.use_sort_hosts
= set_flag(data
);
157 run_distribution(ptr
);
162 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
:
163 ptr
->poll_timeout
= (int32_t)data
;
166 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
:
167 ptr
->connect_timeout
= (int32_t)data
;
170 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
:
171 ptr
->retry_timeout
= (int32_t)data
;
174 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
:
175 ptr
->send_size
= (int32_t)data
;
179 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
:
180 ptr
->recv_size
= (int32_t)data
;
184 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
:
185 ptr
->tcp_keepidle
= (uint32_t)data
;
189 case MEMCACHED_BEHAVIOR_USER_DATA
:
190 return memcached_set_error(*ptr
, MEMCACHED_DEPRECATED
, MEMCACHED_AT
,
191 memcached_literal_param("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
193 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
:
194 ptr
->flags
.hash_with_prefix_key
= set_flag(data
);
197 case MEMCACHED_BEHAVIOR_NOREPLY
:
198 ptr
->flags
.no_reply
= set_flag(data
);
201 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
:
202 ptr
->flags
.auto_eject_hosts
= set_flag(data
);
205 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
:
206 srandom((uint32_t) time(NULL
));
207 ptr
->flags
.randomize_replica_read
= set_flag(data
);
210 case MEMCACHED_BEHAVIOR_CORK
:
211 return memcached_set_error(*ptr
, MEMCACHED_DEPRECATED
, MEMCACHED_AT
,
212 memcached_literal_param("MEMCACHED_BEHAVIOR_CORK is now incorporated into the driver by default."));
214 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
:
215 return memcached_set_error(*ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
216 memcached_literal_param("MEMCACHED_BEHAVIOR_LOAD_FROM_FILE can not be set with memcached_behavior_set()"));
218 case MEMCACHED_BEHAVIOR_MAX
:
220 /* Shouldn't get here */
221 WATCHPOINT_ASSERT(0);
222 return memcached_set_error(*ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
223 memcached_literal_param("Invalid behavior passed to memcached_behavior_set()"));
226 return MEMCACHED_SUCCESS
;
229 bool _is_auto_eject_host(const memcached_st
*ptr
)
231 return ptr
->flags
.auto_eject_hosts
;
234 uint64_t memcached_behavior_get(memcached_st
*ptr
,
235 const memcached_behavior_t flag
)
239 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
:
240 return ptr
->number_of_replicas
;
242 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
:
243 return ptr
->io_msg_watermark
;
245 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
:
246 return ptr
->io_bytes_watermark
;
248 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
:
249 return ptr
->io_key_prefetch
;
251 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
:
252 return ptr
->flags
.binary_protocol
;
254 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
:
255 return ptr
->flags
.support_cas
;
257 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
:
260 case MEMCACHED_BEHAVIOR_NO_BLOCK
:
261 return ptr
->flags
.no_block
;
263 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
:
264 return ptr
->flags
.buffer_requests
;
266 case MEMCACHED_BEHAVIOR_USE_UDP
:
267 return ptr
->flags
.use_udp
;
269 case MEMCACHED_BEHAVIOR_TCP_NODELAY
:
270 return ptr
->flags
.tcp_nodelay
;
272 case MEMCACHED_BEHAVIOR_VERIFY_KEY
:
273 return ptr
->flags
.verify_key
;
275 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
:
276 return ptr
->ketama
.weighted
;
278 case MEMCACHED_BEHAVIOR_DISTRIBUTION
:
279 return ptr
->distribution
;
281 case MEMCACHED_BEHAVIOR_KETAMA
:
282 return (ptr
->distribution
== MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
) ? (uint64_t) 1 : 0;
284 case MEMCACHED_BEHAVIOR_HASH
:
285 return hashkit_get_function(&ptr
->hashkit
);
287 case MEMCACHED_BEHAVIOR_KETAMA_HASH
:
288 return hashkit_get_function(&ptr
->hashkit
);
290 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
:
291 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
:
292 return ptr
->server_failure_limit
;
294 case MEMCACHED_BEHAVIOR_SORT_HOSTS
:
295 return ptr
->flags
.use_sort_hosts
;
297 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
:
298 return (uint64_t)ptr
->poll_timeout
;
300 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
:
301 return (uint64_t)ptr
->connect_timeout
;
303 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
:
304 return (uint64_t)ptr
->retry_timeout
;
306 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
:
307 return (uint64_t)ptr
->snd_timeout
;
309 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
:
310 return (uint64_t)ptr
->rcv_timeout
;
312 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
:
313 return (uint64_t)ptr
->tcp_keepidle
;
315 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
:
318 socklen_t sock_length
= sizeof(int);
320 if (ptr
->send_size
!= -1) // If value is -1 then we are using the default
321 return (uint64_t) ptr
->send_size
;
323 memcached_server_write_instance_st instance
= memcached_server_instance_fetch(ptr
, 0);
325 if (instance
) // If we have an instance we test, otherwise we just set and pray
328 /* We just try the first host, and if it is down we return zero */
329 if (memcached_failed(memcached_connect(instance
)))
334 if (memcached_failed(memcached_io_wait_for_write(instance
)))
339 if (getsockopt(instance
->fd
, SOL_SOCKET
, SO_SNDBUF
, &sock_size
, &sock_length
) < 0)
341 memcached_set_errno(*ptr
, errno
, MEMCACHED_AT
);
342 return 0; /* Zero means error */
346 return (uint64_t) sock_size
;
349 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
:
352 socklen_t sock_length
= sizeof(int);
354 if (ptr
->recv_size
!= -1) // If value is -1 then we are using the default
355 return (uint64_t) ptr
->recv_size
;
357 memcached_server_write_instance_st instance
= memcached_server_instance_fetch(ptr
, 0);
364 /* We just try the first host, and if it is down we return zero */
365 if (memcached_failed(memcached_connect(instance
)))
370 if (memcached_failed(memcached_io_wait_for_write(instance
)))
375 if (getsockopt(instance
->fd
, SOL_SOCKET
, SO_RCVBUF
, &sock_size
, &sock_length
) < 0)
377 memcached_set_errno(*ptr
, errno
, MEMCACHED_AT
);
378 return 0; /* Zero means error */
383 return (uint64_t) sock_size
;
386 case MEMCACHED_BEHAVIOR_USER_DATA
:
387 memcached_set_error(*ptr
, MEMCACHED_DEPRECATED
, MEMCACHED_AT
,
388 memcached_literal_param("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
391 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
:
392 return ptr
->flags
.hash_with_prefix_key
;
394 case MEMCACHED_BEHAVIOR_NOREPLY
:
395 return ptr
->flags
.no_reply
;
397 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
:
398 return ptr
->flags
.auto_eject_hosts
;
400 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
:
401 return ptr
->flags
.randomize_replica_read
;
403 case MEMCACHED_BEHAVIOR_CORK
:
410 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
:
411 return ptr
->flags
.tcp_keepalive
;
413 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
:
414 return bool(memcached_parse_filename(ptr
));
416 case MEMCACHED_BEHAVIOR_MAX
:
418 WATCHPOINT_ASSERT(0); /* Programming mistake if it gets this far */
426 memcached_return_t
memcached_behavior_set_distribution(memcached_st
*ptr
, memcached_server_distribution_t type
)
428 if (type
< MEMCACHED_DISTRIBUTION_CONSISTENT_MAX
)
430 if (MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED
)
432 ptr
->ketama
.weighted
= true;
436 ptr
->ketama
.weighted
= false;
438 ptr
->distribution
= type
;
439 run_distribution(ptr
);
440 return MEMCACHED_SUCCESS
;
443 return memcached_set_error(*ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
444 memcached_literal_param("Invalid memcached_server_distribution_t"));
448 memcached_server_distribution_t
memcached_behavior_get_distribution(memcached_st
*ptr
)
450 return ptr
->distribution
;
453 memcached_return_t
memcached_behavior_set_key_hash(memcached_st
*ptr
, memcached_hash_t type
)
455 if (hashkit_success(hashkit_set_function(&ptr
->hashkit
, (hashkit_hash_algorithm_t
)type
)))
456 return MEMCACHED_SUCCESS
;
458 return memcached_set_error(*ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
459 memcached_literal_param("Invalid memcached_hash_t()"));
462 memcached_hash_t
memcached_behavior_get_key_hash(memcached_st
*ptr
)
464 return (memcached_hash_t
)hashkit_get_function(&ptr
->hashkit
);
467 memcached_return_t
memcached_behavior_set_distribution_hash(memcached_st
*ptr
, memcached_hash_t type
)
469 if (hashkit_success(hashkit_set_distribution_function(&ptr
->hashkit
, (hashkit_hash_algorithm_t
)type
)))
470 return MEMCACHED_SUCCESS
;
472 return memcached_set_error(*ptr
, MEMCACHED_INVALID_ARGUMENTS
, MEMCACHED_AT
,
473 memcached_literal_param("Invalid memcached_hash_t()"));
476 memcached_hash_t
memcached_behavior_get_distribution_hash(memcached_st
*ptr
)
478 return (memcached_hash_t
)hashkit_get_function(&ptr
->hashkit
);
481 const char *libmemcached_string_behavior(const memcached_behavior_t flag
)
485 case MEMCACHED_BEHAVIOR_NO_BLOCK
: return "MEMCACHED_BEHAVIOR_NO_BLOCK";
486 case MEMCACHED_BEHAVIOR_TCP_NODELAY
: return "MEMCACHED_BEHAVIOR_TCP_NODELAY";
487 case MEMCACHED_BEHAVIOR_HASH
: return "MEMCACHED_BEHAVIOR_HASH";
488 case MEMCACHED_BEHAVIOR_KETAMA
: return "MEMCACHED_BEHAVIOR_KETAMA";
489 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
: return "MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE";
490 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
: return "MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE";
491 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
: return "MEMCACHED_BEHAVIOR_CACHE_LOOKUPS";
492 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
: return "MEMCACHED_BEHAVIOR_SUPPORT_CAS";
493 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
: return "MEMCACHED_BEHAVIOR_POLL_TIMEOUT";
494 case MEMCACHED_BEHAVIOR_DISTRIBUTION
: return "MEMCACHED_BEHAVIOR_DISTRIBUTION";
495 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
: return "MEMCACHED_BEHAVIOR_BUFFER_REQUESTS";
496 case MEMCACHED_BEHAVIOR_USER_DATA
: return "MEMCACHED_BEHAVIOR_USER_DATA";
497 case MEMCACHED_BEHAVIOR_SORT_HOSTS
: return "MEMCACHED_BEHAVIOR_SORT_HOSTS";
498 case MEMCACHED_BEHAVIOR_VERIFY_KEY
: return "MEMCACHED_BEHAVIOR_VERIFY_KEY";
499 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
: return "MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT";
500 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
: return "MEMCACHED_BEHAVIOR_RETRY_TIMEOUT";
501 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
: return "MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED";
502 case MEMCACHED_BEHAVIOR_KETAMA_HASH
: return "MEMCACHED_BEHAVIOR_KETAMA_HASH";
503 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
: return "MEMCACHED_BEHAVIOR_BINARY_PROTOCOL";
504 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
: return "MEMCACHED_BEHAVIOR_SND_TIMEOUT";
505 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
: return "MEMCACHED_BEHAVIOR_RCV_TIMEOUT";
506 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
: return "MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT";
507 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
: return "MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK";
508 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
: return "MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK";
509 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
: return "MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH";
510 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
: return "MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY";
511 case MEMCACHED_BEHAVIOR_NOREPLY
: return "MEMCACHED_BEHAVIOR_NOREPLY";
512 case MEMCACHED_BEHAVIOR_USE_UDP
: return "MEMCACHED_BEHAVIOR_USE_UDP";
513 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
: return "MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS";
514 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
: return "MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS";
515 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
: return "MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS";
516 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
: return "MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ";
517 case MEMCACHED_BEHAVIOR_CORK
: return "MEMCACHED_BEHAVIOR_CORK";
518 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
: return "MEMCACHED_BEHAVIOR_TCP_KEEPALIVE";
519 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
: return "MEMCACHED_BEHAVIOR_TCP_KEEPIDLE";
520 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
: return "MEMCACHED_BEHAVIOR_LOAD_FROM_FILE";
522 case MEMCACHED_BEHAVIOR_MAX
: return "INVALID memcached_behavior_t";
526 const char *libmemcached_string_distribution(const memcached_server_distribution_t flag
)
530 case MEMCACHED_DISTRIBUTION_MODULA
: return "MEMCACHED_DISTRIBUTION_MODULA";
531 case MEMCACHED_DISTRIBUTION_CONSISTENT
: return "MEMCACHED_DISTRIBUTION_CONSISTENT";
532 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
: return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA";
533 case MEMCACHED_DISTRIBUTION_RANDOM
: return "MEMCACHED_DISTRIBUTION_RANDOM";
534 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY
: return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY";
535 case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED
: return "MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED";
536 case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET
: return "MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET";
538 case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX
: return "INVALID memcached_server_distribution_t";
542 memcached_return_t
memcached_bucket_set(memcached_st
*self
,
543 const uint32_t *host_map
,
544 const uint32_t *forward_map
,
545 const uint32_t buckets
,
546 const uint32_t replicas
)
548 memcached_return_t rc
;
551 return MEMCACHED_INVALID_ARGUMENTS
;
554 return MEMCACHED_INVALID_ARGUMENTS
;
556 memcached_server_distribution_t old
= memcached_behavior_get_distribution(self
);
558 if (memcached_failed(rc
=memcached_behavior_set_distribution(self
, MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET
)))
563 if (memcached_failed(rc
= memcached_virtual_bucket_create(self
, host_map
, forward_map
, buckets
, replicas
)))
565 memcached_behavior_set_distribution(self
, old
);