/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Libmemcached library
*
* Copyright (C) 2011 Data Differential, http://datadifferential.com/
* Copyright (C) 2006-2009 Brian Aker All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <libmemcached/common.h>
#include <libmemcached/options.hpp>
#include <libmemcached/virtual_bucket.h>
#include <ctime>
#include <sys/types.h>
bool memcached_is_consistent_distribution(const Memcached* memc)
{
switch (memc->distribution)
{
case MEMCACHED_DISTRIBUTION_CONSISTENT:
case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA:
case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY:
case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED:
return true;
case MEMCACHED_DISTRIBUTION_MODULA:
case MEMCACHED_DISTRIBUTION_RANDOM:
case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET:
case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX:
break;
}
return false;
}
/*
This function is used to modify the behavior of running client.
We quit all connections so we can reset the sockets.
*/
memcached_return_t memcached_behavior_set(memcached_st *shell,
const memcached_behavior_t flag,
uint64_t data)
{
Memcached* ptr= memcached2Memcached(shell);
if (ptr == NULL)
{
return MEMCACHED_INVALID_ARGUMENTS;
}
switch (flag)
{
case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS:
ptr->number_of_replicas= (uint32_t)data;
break;
case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK:
ptr->io_msg_watermark= (uint32_t) data;
break;
case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK:
ptr->io_bytes_watermark= (uint32_t)data;
break;
case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH:
ptr->io_key_prefetch = (uint32_t)data;
break;
case MEMCACHED_BEHAVIOR_SND_TIMEOUT:
ptr->snd_timeout= (int32_t)data;
break;
case MEMCACHED_BEHAVIOR_RCV_TIMEOUT:
ptr->rcv_timeout= (int32_t)data;
break;
case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS:
ptr->flags.auto_eject_hosts= bool(data);
case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT:
if (data == 0)
{
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT requires a value greater then zero."));
}
ptr->server_failure_limit= uint32_t(data);
break;
case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT:
ptr->server_timeout_limit= uint32_t(data);
break;
case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL:
send_quit(ptr); // We need t shutdown all of the connections to make sure we do the correct protocol
if (data)
{
ptr->flags.verify_key= false;
}
ptr->flags.binary_protocol= bool(data);
break;
case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
ptr->flags.support_cas= bool(data);
break;
case MEMCACHED_BEHAVIOR_NO_BLOCK:
ptr->flags.no_block= bool(data);
send_quit(ptr);
break;
case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
if (memcached_is_udp(ptr))
{
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_BUFFER_REQUESTS cannot be set while MEMCACHED_BEHAVIOR_USE_UDP is enabled."));
}
ptr->flags.buffer_requests= bool(data);
send_quit(ptr);
break;
case MEMCACHED_BEHAVIOR_USE_UDP:
send_quit(ptr); // We need t shutdown all of the connections to make sure we do the correct protocol
ptr->flags.use_udp= bool(data);
if (bool(data))
{
ptr->flags.reply= false;
ptr->flags.buffer_requests= false;
}
else
{
ptr->flags.reply= true;
}
break;
case MEMCACHED_BEHAVIOR_TCP_NODELAY:
ptr->flags.tcp_nodelay= bool(data);
send_quit(ptr);
break;
case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE:
ptr->flags.tcp_keepalive= bool(data);
send_quit(ptr);
break;
case MEMCACHED_BEHAVIOR_DISTRIBUTION:
return memcached_behavior_set_distribution(ptr, (memcached_server_distribution_t)data);
case MEMCACHED_BEHAVIOR_KETAMA:
{
if (data) // Turn on
{
return memcached_behavior_set_distribution(ptr, MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA);
}
return memcached_behavior_set_distribution(ptr, MEMCACHED_DISTRIBUTION_MODULA);
}
case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED:
{
if (bool(data) == false)
{
return memcached_behavior_set(ptr, MEMCACHED_BEHAVIOR_KETAMA, true);
}
(void)memcached_behavior_set_key_hash(ptr, MEMCACHED_HASH_MD5);
(void)memcached_behavior_set_distribution_hash(ptr, MEMCACHED_HASH_MD5);
/**
@note We try to keep the same distribution going. This should be deprecated and rewritten.
*/
return memcached_behavior_set_distribution(ptr, MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED);
}
case MEMCACHED_BEHAVIOR_HASH:
return memcached_behavior_set_key_hash(ptr, (memcached_hash_t)(data));
case MEMCACHED_BEHAVIOR_KETAMA_HASH:
return memcached_behavior_set_distribution_hash(ptr, (memcached_hash_t)(data));
case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
return memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_CACHE_LOOKUPS has been deprecated."));
case MEMCACHED_BEHAVIOR_VERIFY_KEY:
if (ptr->flags.binary_protocol)
{
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_VERIFY_KEY if the binary protocol has been enabled."));
}
ptr->flags.verify_key= bool(data);
break;
case MEMCACHED_BEHAVIOR_SORT_HOSTS:
{
ptr->flags.use_sort_hosts= bool(data);
return run_distribution(ptr);
}
case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
ptr->poll_timeout= (int32_t)data;
break;
case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
ptr->connect_timeout= (int32_t)data;
break;
case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
ptr->retry_timeout= int32_t(data);
break;
case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT:
ptr->dead_timeout= int32_t(data);
break;
case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
ptr->send_size= (int32_t)data;
send_quit(ptr);
break;
case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
ptr->recv_size= (int32_t)data;
send_quit(ptr);
break;
case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE:
ptr->tcp_keepidle= (uint32_t)data;
send_quit(ptr);
break;
case MEMCACHED_BEHAVIOR_USER_DATA:
return memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY:
ptr->flags.hash_with_namespace= bool(data);
break;
case MEMCACHED_BEHAVIOR_NOREPLY:
if (memcached_is_udp(ptr) and bool(data) == false)
{
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_NOREPLY cannot be disabled while MEMCACHED_BEHAVIOR_USE_UDP is enabled."));
}
// We reverse the logic here to make it easier to understand throughout the
// code.
ptr->flags.reply= bool(data) ? false : true;
break;
case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS:
ptr->flags.auto_eject_hosts= bool(data);
break;
case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ:
srandom((uint32_t) time(NULL));
ptr->flags.randomize_replica_read= bool(data);
break;
case MEMCACHED_BEHAVIOR_CORK:
return memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_CORK is now incorporated into the driver by default."));
case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE:
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_LOAD_FROM_FILE can not be set with memcached_behavior_set()"));
case MEMCACHED_BEHAVIOR_MAX:
default:
/* Shouldn't get here */
assert_msg(0, "Invalid behavior passed to memcached_behavior_set()");
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("Invalid behavior passed to memcached_behavior_set()"));
}
return MEMCACHED_SUCCESS;
}
bool _is_auto_eject_host(const memcached_st *ptr)
{
return ptr->flags.auto_eject_hosts;
}
uint64_t memcached_behavior_get(memcached_st *shell,
const memcached_behavior_t flag)
{
Memcached* ptr= memcached2Memcached(shell);
if (ptr == NULL)
{
return MEMCACHED_INVALID_ARGUMENTS;
}
switch (flag)
{
case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS:
return ptr->number_of_replicas;
case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK:
return ptr->io_msg_watermark;
case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK:
return ptr->io_bytes_watermark;
case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH:
return ptr->io_key_prefetch;
case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL:
return ptr->flags.binary_protocol;
case MEMCACHED_BEHAVIOR_SUPPORT_CAS:
return ptr->flags.support_cas;
case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS:
return true;
case MEMCACHED_BEHAVIOR_NO_BLOCK:
return ptr->flags.no_block;
case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS:
return ptr->flags.buffer_requests;
case MEMCACHED_BEHAVIOR_USE_UDP:
return memcached_is_udp(ptr);
case MEMCACHED_BEHAVIOR_TCP_NODELAY:
return ptr->flags.tcp_nodelay;
case MEMCACHED_BEHAVIOR_VERIFY_KEY:
return ptr->flags.verify_key;
case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED:
if (memcached_is_consistent_distribution(ptr))
{
return memcached_is_weighted_ketama(ptr);
}
return false;
case MEMCACHED_BEHAVIOR_DISTRIBUTION:
return ptr->distribution;
case MEMCACHED_BEHAVIOR_KETAMA:
return memcached_is_consistent_distribution(ptr);
case MEMCACHED_BEHAVIOR_HASH:
return hashkit_get_function(&ptr->hashkit);
case MEMCACHED_BEHAVIOR_KETAMA_HASH:
return hashkit_get_function(&ptr->hashkit);
case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS:
case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT:
return ptr->server_failure_limit;
case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT:
return ptr->server_timeout_limit;
case MEMCACHED_BEHAVIOR_SORT_HOSTS:
return ptr->flags.use_sort_hosts;
case MEMCACHED_BEHAVIOR_POLL_TIMEOUT:
return (uint64_t)ptr->poll_timeout;
case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT:
return (uint64_t)ptr->connect_timeout;
case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT:
return (uint64_t)ptr->retry_timeout;
case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT:
return uint64_t(ptr->dead_timeout);
case MEMCACHED_BEHAVIOR_SND_TIMEOUT:
return (uint64_t)ptr->snd_timeout;
case MEMCACHED_BEHAVIOR_RCV_TIMEOUT:
return (uint64_t)ptr->rcv_timeout;
case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE:
return (uint64_t)ptr->tcp_keepidle;
case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE:
{
int sock_size= 0;
socklen_t sock_length= sizeof(int);
if (ptr->send_size != -1) // If value is -1 then we are using the default
{
return (uint64_t) ptr->send_size;
}
memcached_instance_st* instance= memcached_instance_fetch(ptr, 0);
if (instance) // If we have an instance we test, otherwise we just set and pray
{
/* REFACTOR */
/* We just try the first host, and if it is down we return zero */
if (memcached_failed(memcached_connect(instance)))
{
return 0;
}
if (memcached_failed(memcached_io_wait_for_write(instance)))
{
return 0;
}
if (getsockopt(instance->fd, SOL_SOCKET, SO_SNDBUF, (char*)&sock_size, &sock_length) < 0)
{
memcached_set_errno(*ptr, get_socket_errno(), MEMCACHED_AT);
return 0; /* Zero means error */
}
}
return (uint64_t) sock_size;
}
case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE:
{
int sock_size= 0;
socklen_t sock_length= sizeof(int);
if (ptr->recv_size != -1) // If value is -1 then we are using the default
return (uint64_t) ptr->recv_size;
memcached_instance_st* instance= memcached_instance_fetch(ptr, 0);
/**
@note REFACTOR
*/
if (instance)
{
/* We just try the first host, and if it is down we return zero */
if (memcached_failed(memcached_connect(instance)))
{
return 0;
}
if (memcached_failed(memcached_io_wait_for_write(instance)))
{
return 0;
}
if (getsockopt(instance->fd, SOL_SOCKET, SO_RCVBUF, (char*)&sock_size, &sock_length) < 0)
{
memcached_set_errno(*ptr, get_socket_errno(), MEMCACHED_AT);
return 0; /* Zero means error */
}
}
return (uint64_t) sock_size;
}
case MEMCACHED_BEHAVIOR_USER_DATA:
memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT,
memcached_literal_param("MEMCACHED_BEHAVIOR_USER_DATA deprecated."));
return 0;
case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY:
return ptr->flags.hash_with_namespace;
case MEMCACHED_BEHAVIOR_NOREPLY:
return ptr->flags.reply ? false : true;
case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS:
return ptr->flags.auto_eject_hosts;
case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ:
return ptr->flags.randomize_replica_read;
case MEMCACHED_BEHAVIOR_CORK:
#ifdef HAVE_MSG_MORE
return true;
#else
return false;
#endif
case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE:
return ptr->flags.tcp_keepalive;
case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE:
return bool(memcached_parse_filename(ptr));
case MEMCACHED_BEHAVIOR_MAX:
default:
assert_msg(0, "Invalid behavior passed to memcached_behavior_get()");
return 0;
}
/* NOTREACHED */
}
memcached_return_t memcached_behavior_set_distribution(memcached_st *shell, memcached_server_distribution_t type)
{
Memcached* ptr= memcached2Memcached(shell);
if (ptr)
{
switch (type)
{
case MEMCACHED_DISTRIBUTION_MODULA:
break;
case MEMCACHED_DISTRIBUTION_CONSISTENT:
case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA:
memcached_set_weighted_ketama(ptr, false);
break;
case MEMCACHED_DISTRIBUTION_RANDOM:
break;
case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY:
break;
case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED:
memcached_set_weighted_ketama(ptr, true);
break;
case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET:
break;
default:
case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX:
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("Invalid memcached_server_distribution_t"));
}
ptr->distribution= type;
return run_distribution(ptr);
}
return MEMCACHED_INVALID_ARGUMENTS;
}
memcached_server_distribution_t memcached_behavior_get_distribution(memcached_st *shell)
{
Memcached* ptr= memcached2Memcached(shell);
if (ptr)
{
return ptr->distribution;
}
return MEMCACHED_DISTRIBUTION_CONSISTENT_MAX;
}
memcached_return_t memcached_behavior_set_key_hash(memcached_st *shell, memcached_hash_t type)
{
Memcached* ptr= memcached2Memcached(shell);
if (ptr)
{
if (hashkit_success(hashkit_set_function(&ptr->hashkit, (hashkit_hash_algorithm_t)type)))
{
return MEMCACHED_SUCCESS;
}
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("Invalid memcached_hash_t()"));
}
return MEMCACHED_INVALID_ARGUMENTS;
}
memcached_hash_t memcached_behavior_get_key_hash(memcached_st *shell)
{
Memcached* ptr= memcached2Memcached(shell);
if (ptr)
{
return (memcached_hash_t)hashkit_get_function(&ptr->hashkit);
}
return MEMCACHED_HASH_MAX;
}
memcached_return_t memcached_behavior_set_distribution_hash(memcached_st *shell, memcached_hash_t type)
{
Memcached* ptr= memcached2Memcached(shell);
if (ptr)
{
if (hashkit_success(hashkit_set_distribution_function(&ptr->hashkit, (hashkit_hash_algorithm_t)type)))
{
return MEMCACHED_SUCCESS;
}
return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT,
memcached_literal_param("Invalid memcached_hash_t()"));
}
return MEMCACHED_INVALID_ARGUMENTS;
}
memcached_hash_t memcached_behavior_get_distribution_hash(memcached_st *shell)
{
Memcached* ptr= memcached2Memcached(shell);
if (ptr)
{
return (memcached_hash_t)hashkit_get_function(&ptr->hashkit);
}
return MEMCACHED_HASH_MAX;
}
const char *libmemcached_string_behavior(const memcached_behavior_t flag)
{
switch (flag)
{
case MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT: return "MEMCACHED_BEHAVIOR_SERVER_TIMEOUT_LIMIT";
case MEMCACHED_BEHAVIOR_NO_BLOCK: return "MEMCACHED_BEHAVIOR_NO_BLOCK";
case MEMCACHED_BEHAVIOR_TCP_NODELAY: return "MEMCACHED_BEHAVIOR_TCP_NODELAY";
case MEMCACHED_BEHAVIOR_HASH: return "MEMCACHED_BEHAVIOR_HASH";
case MEMCACHED_BEHAVIOR_KETAMA: return "MEMCACHED_BEHAVIOR_KETAMA";
case MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE: return "MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE";
case MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE: return "MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE";
case MEMCACHED_BEHAVIOR_CACHE_LOOKUPS: return "MEMCACHED_BEHAVIOR_CACHE_LOOKUPS";
case MEMCACHED_BEHAVIOR_SUPPORT_CAS: return "MEMCACHED_BEHAVIOR_SUPPORT_CAS";
case MEMCACHED_BEHAVIOR_POLL_TIMEOUT: return "MEMCACHED_BEHAVIOR_POLL_TIMEOUT";
case MEMCACHED_BEHAVIOR_DISTRIBUTION: return "MEMCACHED_BEHAVIOR_DISTRIBUTION";
case MEMCACHED_BEHAVIOR_BUFFER_REQUESTS: return "MEMCACHED_BEHAVIOR_BUFFER_REQUESTS";
case MEMCACHED_BEHAVIOR_USER_DATA: return "MEMCACHED_BEHAVIOR_USER_DATA";
case MEMCACHED_BEHAVIOR_SORT_HOSTS: return "MEMCACHED_BEHAVIOR_SORT_HOSTS";
case MEMCACHED_BEHAVIOR_VERIFY_KEY: return "MEMCACHED_BEHAVIOR_VERIFY_KEY";
case MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT: return "MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT";
case MEMCACHED_BEHAVIOR_RETRY_TIMEOUT: return "MEMCACHED_BEHAVIOR_RETRY_TIMEOUT";
case MEMCACHED_BEHAVIOR_DEAD_TIMEOUT: return "MEMCACHED_BEHAVIOR_DEAD_TIMEOUT";
case MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED: return "MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED";
case MEMCACHED_BEHAVIOR_KETAMA_HASH: return "MEMCACHED_BEHAVIOR_KETAMA_HASH";
case MEMCACHED_BEHAVIOR_BINARY_PROTOCOL: return "MEMCACHED_BEHAVIOR_BINARY_PROTOCOL";
case MEMCACHED_BEHAVIOR_SND_TIMEOUT: return "MEMCACHED_BEHAVIOR_SND_TIMEOUT";
case MEMCACHED_BEHAVIOR_RCV_TIMEOUT: return "MEMCACHED_BEHAVIOR_RCV_TIMEOUT";
case MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT: return "MEMCACHED_BEHAVIOR_SERVER_FAILURE_LIMIT";
case MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK: return "MEMCACHED_BEHAVIOR_IO_MSG_WATERMARK";
case MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK: return "MEMCACHED_BEHAVIOR_IO_BYTES_WATERMARK";
case MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH: return "MEMCACHED_BEHAVIOR_IO_KEY_PREFETCH";
case MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY: return "MEMCACHED_BEHAVIOR_HASH_WITH_PREFIX_KEY";
case MEMCACHED_BEHAVIOR_NOREPLY: return "MEMCACHED_BEHAVIOR_NOREPLY";
case MEMCACHED_BEHAVIOR_USE_UDP: return "MEMCACHED_BEHAVIOR_USE_UDP";
case MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS: return "MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS";
case MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS: return "MEMCACHED_BEHAVIOR_REMOVE_FAILED_SERVERS";
case MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS: return "MEMCACHED_BEHAVIOR_NUMBER_OF_REPLICAS";
case MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ: return "MEMCACHED_BEHAVIOR_RANDOMIZE_REPLICA_READ";
case MEMCACHED_BEHAVIOR_CORK: return "MEMCACHED_BEHAVIOR_CORK";
case MEMCACHED_BEHAVIOR_TCP_KEEPALIVE: return "MEMCACHED_BEHAVIOR_TCP_KEEPALIVE";
case MEMCACHED_BEHAVIOR_TCP_KEEPIDLE: return "MEMCACHED_BEHAVIOR_TCP_KEEPIDLE";
case MEMCACHED_BEHAVIOR_LOAD_FROM_FILE: return "MEMCACHED_BEHAVIOR_LOAD_FROM_FILE";
default:
case MEMCACHED_BEHAVIOR_MAX: return "INVALID memcached_behavior_t";
}
}
const char *libmemcached_string_distribution(const memcached_server_distribution_t flag)
{
switch (flag)
{
case MEMCACHED_DISTRIBUTION_MODULA: return "MEMCACHED_DISTRIBUTION_MODULA";
case MEMCACHED_DISTRIBUTION_CONSISTENT: return "MEMCACHED_DISTRIBUTION_CONSISTENT";
case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA: return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA";
case MEMCACHED_DISTRIBUTION_RANDOM: return "MEMCACHED_DISTRIBUTION_RANDOM";
case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY: return "MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY";
case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED: return "MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED";
case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET: return "MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET";
default:
case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX: return "INVALID memcached_server_distribution_t";
}
}
memcached_return_t memcached_bucket_set(memcached_st *shell,
const uint32_t *host_map,
const uint32_t *forward_map,
const uint32_t buckets,
const uint32_t replicas)
{
Memcached* self= memcached2Memcached(shell);
memcached_return_t rc;
if (self == NULL)
{
return MEMCACHED_INVALID_ARGUMENTS;
}
if (host_map == NULL)
{
return MEMCACHED_INVALID_ARGUMENTS;
}
memcached_server_distribution_t old= memcached_behavior_get_distribution(self);
if (memcached_failed(rc =memcached_behavior_set_distribution(self, MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET)))
{
return rc;
}
if (memcached_failed(rc= memcached_virtual_bucket_create(self, host_map, forward_map, buckets, replicas)))
{
memcached_behavior_set_distribution(self, old);
}
return rc;
}