/*
This is a partial implementation for fetching/creating memcached_server_st objects.
*/
#include "common.h"
memcached_server_st *memcached_server_create(memcached_st *memc, memcached_server_st *ptr)
{
if (ptr == NULL)
{
ptr= (memcached_server_st *)calloc(1, sizeof(memcached_server_st));
if (!ptr)
return NULL; /* MEMCACHED_MEMORY_ALLOCATION_FAILURE */
ptr->is_allocated= true;
}
else
memset(ptr, 0, sizeof(memcached_server_st));
ptr->root= memc;
return ptr;
}
memcached_server_st *memcached_server_create_with(memcached_st *memc, memcached_server_st *host,
const char *hostname, unsigned int port,
uint32_t weight, memcached_connection type)
{
host= memcached_server_create(memc, host);
if (host == NULL)
return NULL;
strncpy(host->hostname, hostname, MEMCACHED_MAX_HOST_LENGTH - 1);
host->root= memc ? memc : NULL;
host->port= port;
host->weight= weight;
host->fd= -1;
host->type= type;
host->read_ptr= host->read_buffer;
if (memc)
host->next_retry= memc->retry_timeout;
if (type == MEMCACHED_CONNECTION_UDP)
{
host->write_buffer_offset= UDP_DATAGRAM_HEADER_LENGTH;
memcached_io_init_udp_header(host, 0);
}
return host;
}
void memcached_server_free(memcached_server_st *ptr)
{
memcached_quit_server(ptr, 0);
if (ptr->address_info)
{
freeaddrinfo(ptr->address_info);
ptr->address_info= NULL;
}
if (ptr->is_allocated)
ptr->root->call_free(ptr->root, ptr);
else
memset(ptr, 0, sizeof(memcached_server_st));
}
/*
If we do not have a valid object to clone from, we toss an error.
*/
memcached_server_st *memcached_server_clone(memcached_server_st *clone, memcached_server_st *ptr)
{
/* We just do a normal create if ptr is missing */
if (ptr == NULL)
return NULL;
/* TODO We should check return type */
return memcached_server_create_with(ptr->root, clone,
ptr->hostname, ptr->port, ptr->weight,
ptr->type);
}
memcached_return memcached_server_cursor(memcached_st *ptr,
memcached_server_function *callback,
void *context,
unsigned int number_of_callbacks)
{
unsigned int y;
for (y= 0; y < ptr->number_of_hosts; y++)
{
unsigned int x;
for (x= 0; x < number_of_callbacks; x++)
{
unsigned int iferror;
iferror= (*callback[x])(ptr, &ptr->hosts[y], context);
if (iferror)
continue;
}
}
return MEMCACHED_SUCCESS;
}
memcached_server_st *memcached_server_by_key(memcached_st *ptr, const char *key, size_t key_length, memcached_return *error)
{
uint32_t server_key;
*error= memcached_validate_key_length(key_length,
ptr->flags & MEM_BINARY_PROTOCOL);
unlikely (*error != MEMCACHED_SUCCESS)
return NULL;
unlikely (ptr->number_of_hosts == 0)
{
*error= MEMCACHED_NO_SERVERS;
return NULL;
}
if ((ptr->flags & MEM_VERIFY_KEY) && (memcached_key_test((char **)&key, &key_length, 1) == MEMCACHED_BAD_KEY_PROVIDED))
{
*error= MEMCACHED_BAD_KEY_PROVIDED;
return NULL;
}
server_key= memcached_generate_hash(ptr, key, key_length);
return memcached_server_clone(NULL, &ptr->hosts[server_key]);
}