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
,
36 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
:
37 ptr
->number_of_replicas
= (uint32_t)data
;
39 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
:
40 ptr
->io_msg_watermark
= (uint32_t) data
;
42 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
:
43 ptr
->io_bytes_watermark
= (uint32_t)data
;
45 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
:
46 ptr
->io_key_prefetch
= (uint32_t)data
;
48 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
:
49 ptr
->snd_timeout
= (int32_t)data
;
51 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
:
52 ptr
->rcv_timeout
= (int32_t)data
;
55 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
:
56 ptr
->flags
.auto_eject_hosts
= set_flag(data
);
57 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
:
58 ptr
->server_failure_limit
= (uint32_t)data
;
61 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
:
62 send_quit(ptr
); // We need t shutdown all of the connections to make sure we do the correct protocol
65 ptr
->flags
.verify_key
= false;
67 ptr
->flags
.binary_protocol
= set_flag(data
);
69 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
:
70 ptr
->flags
.support_cas
= set_flag(data
);
72 case MEMCACHED_BEHAVIOR_NO_BLOCK
:
73 ptr
->flags
.no_block
= set_flag(data
);
76 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
:
77 ptr
->flags
.buffer_requests
= set_flag(data
);
80 case MEMCACHED_BEHAVIOR_USE_UDP
:
81 if (memcached_server_count(ptr
))
83 return MEMCACHED_FAILURE
;
85 ptr
->flags
.use_udp
= set_flag(data
);
88 ptr
->flags
.no_reply
= set_flag(data
);
91 case MEMCACHED_BEHAVIOR_TCP_NODELAY
:
92 ptr
->flags
.tcp_nodelay
= set_flag(data
);
95 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
:
96 ptr
->flags
.tcp_keepalive
= set_flag(data
);
99 case MEMCACHED_BEHAVIOR_DISTRIBUTION
:
100 return memcached_behavior_set_distribution(ptr
, (memcached_server_distribution_t
)data
);
101 case MEMCACHED_BEHAVIOR_KETAMA
:
104 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
);
106 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_MODULA
);
108 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
:
110 (void)memcached_behavior_set_key_hash(ptr
, MEMCACHED_HASH_MD5
);
111 (void)memcached_behavior_set_distribution_hash(ptr
, MEMCACHED_HASH_MD5
);
112 ptr
->ketama
.weighted
= set_flag(data
);
114 @note We try to keep the same distribution going. This should be deprecated and rewritten.
116 return memcached_behavior_set_distribution(ptr
, MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
);
118 case MEMCACHED_BEHAVIOR_HASH
:
119 return memcached_behavior_set_key_hash(ptr
, (memcached_hash_t
)(data
));
120 case MEMCACHED_BEHAVIOR_KETAMA_HASH
:
121 return memcached_behavior_set_distribution_hash(ptr
, (memcached_hash_t
)(data
));
123 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
:
124 return memcached_set_error_string(ptr
, MEMCACHED_DEPRECATED
,
125 memcached_string_with_size("MEMCACHED_BEHAVIOR_CACHE_LOOKUPS has been deprecated."));
127 case MEMCACHED_BEHAVIOR_VERIFY_KEY
:
128 if (ptr
->flags
.binary_protocol
)
129 return memcached_set_error_string(ptr
, MEMCACHED_INVALID_ARGUMENTS
,
130 memcached_string_with_size("MEMCACHED_BEHAVIOR_VERIFY_KEY if the binary protocol has been enabled."));
131 ptr
->flags
.verify_key
= set_flag(data
);
133 case MEMCACHED_BEHAVIOR_SORT_HOSTS
:
135 ptr
->flags
.use_sort_hosts
= set_flag(data
);
136 run_distribution(ptr
);
140 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
:
141 ptr
->poll_timeout
= (int32_t)data
;
143 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
:
144 ptr
->connect_timeout
= (int32_t)data
;
146 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
:
147 ptr
->retry_timeout
= (int32_t)data
;
149 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
:
150 ptr
->send_size
= (int32_t)data
;
153 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
:
154 ptr
->recv_size
= (int32_t)data
;
157 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
:
158 ptr
->tcp_keepidle
= (uint32_t)data
;
161 case MEMCACHED_BEHAVIOR_USER_DATA
:
162 return memcached_set_error_string(ptr
, MEMCACHED_DEPRECATED
,
163 memcached_string_with_size("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
164 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
:
165 ptr
->flags
.hash_with_prefix_key
= set_flag(data
);
167 case MEMCACHED_BEHAVIOR_NOREPLY
:
168 ptr
->flags
.no_reply
= set_flag(data
);
170 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
:
171 ptr
->flags
.auto_eject_hosts
= set_flag(data
);
173 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
:
174 srandom((uint32_t) time(NULL
));
175 ptr
->flags
.randomize_replica_read
= set_flag(data
);
177 case MEMCACHED_BEHAVIOR_CORK
:
179 return memcached_set_error_string(ptr
, MEMCACHED_DEPRECATED
,
180 memcached_string_with_size("MEMCACHED_BEHAVIOR_CORK is now incorporated into the driver by default."));
183 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
:
184 return memcached_set_error_string(ptr
, MEMCACHED_INVALID_ARGUMENTS
,
185 memcached_string_with_size("MEMCACHED_BEHAVIOR_LOAD_FROM_FILE can not be set with memcached_behavior_set()"));
186 case MEMCACHED_BEHAVIOR_MAX
:
188 /* Shouldn't get here */
189 WATCHPOINT_ASSERT(0);
190 return memcached_set_error_string(ptr
, MEMCACHED_INVALID_ARGUMENTS
,
191 memcached_string_with_size("Invalid behavior passed to memcached_behavior_set()"));
194 return MEMCACHED_SUCCESS
;
197 bool _is_auto_eject_host(const memcached_st
*ptr
)
199 return ptr
->flags
.auto_eject_hosts
;
202 uint64_t memcached_behavior_get(memcached_st
*ptr
,
203 const memcached_behavior_t flag
)
207 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
:
208 return ptr
->number_of_replicas
;
209 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
:
210 return ptr
->io_msg_watermark
;
211 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
:
212 return ptr
->io_bytes_watermark
;
213 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
:
214 return ptr
->io_key_prefetch
;
215 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
:
216 return ptr
->flags
.binary_protocol
;
217 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
:
218 return ptr
->flags
.support_cas
;
220 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
:
223 case MEMCACHED_BEHAVIOR_NO_BLOCK
:
224 return ptr
->flags
.no_block
;
225 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
:
226 return ptr
->flags
.buffer_requests
;
227 case MEMCACHED_BEHAVIOR_USE_UDP
:
228 return ptr
->flags
.use_udp
;
229 case MEMCACHED_BEHAVIOR_TCP_NODELAY
:
230 return ptr
->flags
.tcp_nodelay
;
231 case MEMCACHED_BEHAVIOR_VERIFY_KEY
:
232 return ptr
->flags
.verify_key
;
233 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
:
234 return ptr
->ketama
.weighted
;
235 case MEMCACHED_BEHAVIOR_DISTRIBUTION
:
236 return ptr
->distribution
;
237 case MEMCACHED_BEHAVIOR_KETAMA
:
238 return (ptr
->distribution
== MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
) ? (uint64_t) 1 : 0;
239 case MEMCACHED_BEHAVIOR_HASH
:
240 return hashkit_get_function(&ptr
->hashkit
);
241 case MEMCACHED_BEHAVIOR_KETAMA_HASH
:
242 return hashkit_get_function(&ptr
->distribution_hashkit
);
243 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
:
244 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
:
245 return ptr
->server_failure_limit
;
246 case MEMCACHED_BEHAVIOR_SORT_HOSTS
:
247 return ptr
->flags
.use_sort_hosts
;
248 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
:
249 return (uint64_t)ptr
->poll_timeout
;
250 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
:
251 return (uint64_t)ptr
->connect_timeout
;
252 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
:
253 return (uint64_t)ptr
->retry_timeout
;
254 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
:
255 return (uint64_t)ptr
->snd_timeout
;
256 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
:
257 return (uint64_t)ptr
->rcv_timeout
;
258 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
:
259 return (uint64_t)ptr
->tcp_keepidle
;
260 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
:
263 socklen_t sock_length
= sizeof(int);
264 memcached_server_write_instance_st instance
;
266 if (ptr
->send_size
!= -1) // If value is -1 then we are using the default
267 return (uint64_t) ptr
->send_size
;
269 instance
= memcached_server_instance_fetch(ptr
, 0);
271 if (instance
) // If we have an instance we test, otherwise we just set and pray
274 /* We just try the first host, and if it is down we return zero */
275 if ((memcached_connect(instance
)) != MEMCACHED_SUCCESS
)
280 if (memcached_io_wait_for_write(instance
) != MEMCACHED_SUCCESS
)
285 if (getsockopt(instance
->fd
, SOL_SOCKET
, SO_SNDBUF
, &sock_size
, &sock_length
) < 0)
287 memcached_set_errno(ptr
, errno
, NULL
);
288 return 0; /* Zero means error */
292 return (uint64_t) sock_size
;
294 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
:
297 socklen_t sock_length
= sizeof(int);
298 memcached_server_write_instance_st instance
;
300 if (ptr
->recv_size
!= -1) // If value is -1 then we are using the default
301 return (uint64_t) ptr
->recv_size
;
303 instance
= memcached_server_instance_fetch(ptr
, 0);
310 /* We just try the first host, and if it is down we return zero */
311 if ((memcached_connect(instance
)) != MEMCACHED_SUCCESS
)
316 if (memcached_io_wait_for_write(instance
) != MEMCACHED_SUCCESS
)
321 if (getsockopt(instance
->fd
, SOL_SOCKET
, SO_RCVBUF
, &sock_size
, &sock_length
) < 0)
323 memcached_set_errno(ptr
, errno
, NULL
);
324 return 0; /* Zero means error */
329 return (uint64_t) sock_size
;
331 case MEMCACHED_BEHAVIOR_USER_DATA
:
332 memcached_set_error_string(ptr
, MEMCACHED_DEPRECATED
,
333 memcached_string_with_size("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
335 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
:
336 return ptr
->flags
.hash_with_prefix_key
;
337 case MEMCACHED_BEHAVIOR_NOREPLY
:
338 return ptr
->flags
.no_reply
;
339 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
:
340 return ptr
->flags
.auto_eject_hosts
;
341 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
:
342 return ptr
->flags
.randomize_replica_read
;
343 case MEMCACHED_BEHAVIOR_CORK
:
349 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
:
350 return ptr
->flags
.tcp_keepalive
;
351 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
:
352 return ptr
->configure
.filename
? true : false;
353 case MEMCACHED_BEHAVIOR_MAX
:
355 WATCHPOINT_ASSERT(0); /* Programming mistake if it gets this far */
363 memcached_return_t
memcached_behavior_set_distribution(memcached_st
*ptr
, memcached_server_distribution_t type
)
365 if (type
< MEMCACHED_DISTRIBUTION_CONSISTENT_MAX
)
367 if (MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED
)
369 ptr
->ketama
.weighted
= true;
373 ptr
->ketama
.weighted
= false;
375 ptr
->distribution
= type
;
376 run_distribution(ptr
);
377 return MEMCACHED_SUCCESS
;
380 return memcached_set_error_string(ptr
, MEMCACHED_INVALID_ARGUMENTS
,
381 memcached_string_with_size("Invalid memcached_server_distribution_t"));
385 memcached_server_distribution_t
memcached_behavior_get_distribution(memcached_st
*ptr
)
387 return ptr
->distribution
;
390 memcached_return_t
memcached_behavior_set_key_hash(memcached_st
*ptr
, memcached_hash_t type
)
392 if (hashkit_set_function(&ptr
->hashkit
, (hashkit_hash_algorithm_t
)type
) == HASHKIT_SUCCESS
)
393 return MEMCACHED_SUCCESS
;
395 return memcached_set_error_string(ptr
, MEMCACHED_INVALID_ARGUMENTS
,
396 memcached_string_with_size("Invalid memcached_hash_t()"));
399 memcached_hash_t
memcached_behavior_get_key_hash(memcached_st
*ptr
)
401 return (memcached_hash_t
)hashkit_get_function(&ptr
->hashkit
);
404 memcached_return_t
memcached_behavior_set_distribution_hash(memcached_st
*ptr
, memcached_hash_t type
)
406 if (hashkit_set_function(&ptr
->distribution_hashkit
, (hashkit_hash_algorithm_t
)type
) == HASHKIT_SUCCESS
)
407 return MEMCACHED_SUCCESS
;
409 return memcached_set_error_string(ptr
, MEMCACHED_INVALID_ARGUMENTS
,
410 memcached_string_with_size("Invalid memcached_hash_t()"));
413 memcached_hash_t
memcached_behavior_get_distribution_hash(memcached_st
*ptr
)
415 return (memcached_hash_t
)hashkit_get_function(&ptr
->distribution_hashkit
);
418 const char *libmemcached_string_behavior(const memcached_behavior_t flag
)
422 case MEMCACHED_BEHAVIOR_NO_BLOCK
: return "MEMCACHED_BEHAVIOR_NO_BLOCK";
423 case MEMCACHED_BEHAVIOR_TCP_NODELAY
: return "MEMCACHED_BEHAVIOR_TCP_NODELAY";
424 case MEMCACHED_BEHAVIOR_HASH
: return "MEMCACHED_BEHAVIOR_HASH";
425 case MEMCACHED_BEHAVIOR_KETAMA
: return "MEMCACHED_BEHAVIOR_KETAMA";
426 case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
: return "MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE";
427 case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
: return "MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE";
428 case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS
: return "MEMCACHED_BEHAVIOR_CACHE_LOOKUPS";
429 case MEMCACHED_BEHAVIOR_SUPPORT_CAS
: return "MEMCACHED_BEHAVIOR_SUPPORT_CAS";
430 case MEMCACHED_BEHAVIOR_POLL_TIMEOUT
: return "MEMCACHED_BEHAVIOR_POLL_TIMEOUT";
431 case MEMCACHED_BEHAVIOR_DISTRIBUTION
: return "MEMCACHED_BEHAVIOR_DISTRIBUTION";
432 case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS
: return "MEMCACHED_BEHAVIOR_BUFFER_REQUESTS";
433 case MEMCACHED_BEHAVIOR_USER_DATA
: return "MEMCACHED_BEHAVIOR_USER_DATA";
434 case MEMCACHED_BEHAVIOR_SORT_HOSTS
: return "MEMCACHED_BEHAVIOR_SORT_HOSTS";
435 case MEMCACHED_BEHAVIOR_VERIFY_KEY
: return "MEMCACHED_BEHAVIOR_VERIFY_KEY";
436 case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT
: return "MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT";
437 case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT
: return "MEMCACHED_BEHAVIOR_RETRY_TIMEOUT";
438 case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED
: return "MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED";
439 case MEMCACHED_BEHAVIOR_KETAMA_HASH
: return "MEMCACHED_BEHAVIOR_KETAMA_HASH";
440 case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL
: return "MEMCACHED_BEHAVIOR_BINARY_PROTOCOL";
441 case MEMCACHED_BEHAVIOR_SND_TIMEOUT
: return "MEMCACHED_BEHAVIOR_SND_TIMEOUT";
442 case MEMCACHED_BEHAVIOR_RCV_TIMEOUT
: return "MEMCACHED_BEHAVIOR_RCV_TIMEOUT";
443 case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT
: return "MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT";
444 case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK
: return "MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK";
445 case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK
: return "MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK";
446 case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH
: return "MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH";
447 case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY
: return "MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY";
448 case MEMCACHED_BEHAVIOR_NOREPLY
: return "MEMCACHED_BEHAVIOR_NOREPLY";
449 case MEMCACHED_BEHAVIOR_USE_UDP
: return "MEMCACHED_BEHAVIOR_USE_UDP";
450 case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS
: return "MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS";
451 case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS
: return "MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS";
452 case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS
: return "MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS";
453 case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ
: return "MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ";
454 case MEMCACHED_BEHAVIOR_CORK
: return "MEMCACHED_BEHAVIOR_CORK";
455 case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE
: return "MEMCACHED_BEHAVIOR_TCP_KEEPALIVE";
456 case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE
: return "MEMCACHED_BEHAVIOR_TCP_KEEPIDLE";
457 case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE
: return "MEMCACHED_BEHAVIOR_LOAD_FROM_FILE";
459 case MEMCACHED_BEHAVIOR_MAX
: return "INVALID memcached_behavior_t";
463 const char *libmemcached_string_distribution(const memcached_server_distribution_t flag
)
467 case MEMCACHED_DISTRIBUTION_MODULA
: return "MEMCACHED_DISTRIBUTION_MODULA";
468 case MEMCACHED_DISTRIBUTION_CONSISTENT
: return "MEMCACHED_DISTRIBUTION_CONSISTENT";
469 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA
: return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA";
470 case MEMCACHED_DISTRIBUTION_RANDOM
: return "MEMCACHED_DISTRIBUTION_RANDOM";
471 case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY
: return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY";
472 case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED
: return "MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED";
473 case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET
: return "MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET";
475 case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX
: return "INVALID memcached_server_distribution_t";
479 memcached_return_t
memcached_bucket_set(memcached_st
*self
,
480 const uint32_t *host_map
,
481 const uint32_t *forward_map
,
482 const uint32_t buckets
,
483 const uint32_t replicas
)
485 memcached_return_t rc
;
488 return MEMCACHED_INVALID_ARGUMENTS
;
491 return MEMCACHED_INVALID_ARGUMENTS
;
493 memcached_server_distribution_t old
;
494 old
= memcached_behavior_get_distribution(self
);
496 rc
=memcached_behavior_set_distribution(self
, MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET
);
497 if (rc
!= MEMCACHED_SUCCESS
)
502 rc
= memcached_virtual_bucket_create(self
, host_map
, forward_map
, buckets
, replicas
);
503 if (rc
!= MEMCACHED_SUCCESS
)
505 memcached_behavior_set_distribution(self
, old
);