/* 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.
*
*/
/*
This is a partial implementation for fetching/creating memcached_server_st objects.
*/
#include <libmemcached/common.h>
static inline void _server_init(memcached_server_st *self, Memcached *root,
const memcached_string_t& hostname,
in_port_t port,
uint32_t weight, memcached_connection_t type)
{
self->options.is_shutting_down= false;
self->options.is_dead= false;
self->number_of_hosts= 0;
self->cursor_active= 0;
self->port= port;
self->io_bytes_sent= 0;
self->request_id= 0;
self->server_failure_counter= 0;
self->server_failure_counter_query_id= 0;
self->weight= weight ? weight : 1; // 1 is the default weight value
self->io_wait_count.read= 0;
self->io_wait_count.write= 0;
self->io_wait_count.timeouts= 0;
self->io_wait_count._bytes_read= 0;
self->major_version= UINT8_MAX;
self->micro_version= UINT8_MAX;
self->minor_version= UINT8_MAX;
self->type= type;
self->error_messages= NULL;
self->state= MEMCACHED_SERVER_STATE_NEW;
self->next_retry= 0;
self->root= root;
if (root)
{
self->version= ++root->server_info.version;
}
else
{
self->version= UINT_MAX;
}
self->limit_maxbytes= 0;
memcpy(self->hostname, hostname.c_str, hostname.size);
self->hostname[hostname.size]= 0;
}
static memcached_server_st *_server_create(memcached_server_st *self, const Memcached *memc)
{
if (self == NULL)
{
self= libmemcached_xmalloc(memc, struct memcached_server_st);
if (self == NULL)
{
return NULL; /* MEMCACHED_MEMORY_ALLOCATION_FAILURE */
}
self->options.is_allocated= true;
}
else
{
self->options.is_allocated= false;
}
self->options.is_initialized= true;
return self;
}
memcached_server_st *__server_create_with(Memcached *memc,
memcached_server_st* allocated_instance,
const memcached_string_t& hostname,
const in_port_t port,
uint32_t weight,
const memcached_connection_t type)
{
if (memcached_is_valid_servername(hostname) == false)
{
memcached_set_error(*memc, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid hostname provided"));
return NULL;
}
allocated_instance= _server_create(allocated_instance, memc);
if (allocated_instance == NULL)
{
return NULL;
}
_server_init(allocated_instance, const_cast<Memcached *>(memc), hostname, port, weight, type);
return allocated_instance;
}
void __server_free(memcached_server_st *self)
{
memcached_error_free(*self);
if (memcached_is_allocated(self))
{
libmemcached_free(self->root, self);
}
else
{
self->options.is_initialized= false;
}
}
void memcached_server_free(memcached_server_st *self)
{
if (self == NULL)
{
return;
}
if (memcached_server_list_count(self))
{
memcached_server_list_free(self);
return;
}
__server_free(self);
}
void memcached_server_error_reset(memcached_server_st *self)
{
WATCHPOINT_ASSERT(self);
if (self == NULL)
{
return;
}
memcached_error_free(*self);
}
uint32_t memcached_servers_set_count(memcached_server_st *servers, uint32_t count)
{
WATCHPOINT_ASSERT(servers);
if (servers == NULL)
{
return 0;
}
return servers->number_of_hosts= count;
}
uint32_t memcached_server_count(const memcached_st *self)
{
WATCHPOINT_ASSERT(self);
if (self == NULL)
return 0;
return self->number_of_hosts;
}
const char *memcached_server_name(const memcached_instance_st * self)
{
WATCHPOINT_ASSERT(self);
if (self)
{
return self->_hostname;
}
return NULL;
}
in_port_t memcached_server_port(const memcached_instance_st * self)
{
WATCHPOINT_ASSERT(self);
if (self == NULL)
{
return 0;
}
return self->port();
}
uint32_t memcached_server_response_count(const memcached_instance_st * self)
{
WATCHPOINT_ASSERT(self);
if (self == NULL)
{
return 0;
}
return self->cursor_active_;
}
const char *memcached_server_type(const memcached_instance_st * ptr)
{
if (ptr)
{
switch (ptr->type)
{
case MEMCACHED_CONNECTION_TCP:
return "TCP";
case MEMCACHED_CONNECTION_UDP:
return "UDP";
case MEMCACHED_CONNECTION_UNIX_SOCKET:
return "SOCKET";
}
}
return "UNKNOWN";
}
uint8_t memcached_server_major_version(const memcached_instance_st * instance)
{
if (instance)
{
return instance->major_version;
}
return UINT8_MAX;
}
uint8_t memcached_server_minor_version(const memcached_instance_st * instance)
{
if (instance)
{
return instance->minor_version;
}
return UINT8_MAX;
}
uint8_t memcached_server_micro_version(const memcached_instance_st * instance)
{
if (instance)
{
return instance->micro_version;
}
return UINT8_MAX;
}