/* LibMemcached
- * Copyright (C) 2006-2009 Brian Aker
+ * Copyright (C) 2006-2009 Brian Aker
* All rights reserved.
*
* Use and distribution licensed under the BSD license. See
*/
#include "common.h"
-memcached_server_st *memcached_server_create(memcached_st *memc, memcached_server_st *ptr)
+static inline void _server_init(memcached_server_st *self, const memcached_st *root,
+ const char *hostname, in_port_t port,
+ uint32_t weight, memcached_connection_t type)
{
- if (ptr == NULL)
+ self->options.sockaddr_inited= false;
+ self->options.is_shutting_down= false;
+ self->number_of_hosts= 0;
+ self->cursor_active= 0;
+ self->port= port;
+ self->cached_errno= 0;
+ self->fd= -1;
+ self->io_bytes_sent= 0;
+ self->server_failure_counter= 0;
+ self->weight= weight;
+ self->state.is_corked= false;
+ self->major_version= 0;
+ self->micro_version= 0;
+ self->minor_version= 0;
+ self->type= type;
+ self->read_ptr= self->read_buffer;
+ self->cached_server_error= NULL;
+ self->read_buffer_length= 0;
+ self->read_data_length= 0;
+ self->write_buffer_offset= 0;
+ self->address_info= NULL;
+
+ if (root)
{
- ptr= (memcached_server_st *)memc->call_calloc(memc, 1, sizeof(memcached_server_st));
+ self->next_retry= root->retry_timeout;
+ }
+ else
+ {
+ self->next_retry= 0;
+ }
+
+ self->root= root;
+ self->limit_maxbytes= 0;
+ if (hostname == NULL)
+ self->hostname[0]= 0;
+ else
+ strncpy(self->hostname, hostname, NI_MAXHOST - 1);
+}
+
+static memcached_server_st *_server_create(memcached_server_st *self, const memcached_st *memc)
+{
+ if (self == NULL)
+ {
+ self= (memcached_server_st *)libmemcached_malloc(memc, sizeof(memcached_server_st));
- if (!ptr)
+ if (! self)
return NULL; /* MEMCACHED_MEMORY_ALLOCATION_FAILURE */
- ptr->options.is_allocated= true;
+ self->options.is_allocated= true;
}
else
{
- memset(ptr, 0, sizeof(memcached_server_st));
+ self->options.is_allocated= false;
}
- ptr->root= memc;
+ self->options.is_initialized= true;
- return ptr;
+ return self;
}
-memcached_server_st *memcached_server_create_with(memcached_st *memc, memcached_server_st *host,
+memcached_server_st *memcached_server_create_with(const memcached_st *memc, memcached_server_st *self,
const char *hostname, in_port_t port,
uint32_t weight, memcached_connection_t type)
{
- host= memcached_server_create(memc, host);
+ self= _server_create(self, memc);
- if (host == NULL)
+ if (self == 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;
+ _server_init(self, memc, hostname, port, weight, type);
+
+
if (type == MEMCACHED_CONNECTION_UDP)
{
- host->write_buffer_offset= UDP_DATAGRAM_HEADER_LENGTH;
- memcached_io_init_udp_header(host, 0);
+ self->write_buffer_offset= UDP_DATAGRAM_HEADER_LENGTH;
+ memcached_io_init_udp_header(self, 0);
}
- return host;
+ return self;
}
-void memcached_server_free(memcached_server_st *ptr)
+void memcached_server_free(memcached_server_st *self)
{
- memcached_quit_server(ptr, 0);
-
- if (ptr->cached_server_error)
- free(ptr->cached_server_error);
+ memcached_quit_server(self, false);
- if (ptr->address_info)
- freeaddrinfo(ptr->address_info);
+ if (self->cached_server_error)
+ free(self->cached_server_error);
+ if (self->address_info)
+ freeaddrinfo(self->address_info);
- if (memcached_is_allocated(ptr))
+ if (memcached_is_allocated(self))
{
- ptr->root->call_free(ptr->root, ptr);
+ libmemcached_free(self->root, self);
}
else
{
- memset(ptr, 0, sizeof(memcached_server_st));
+ self->options.is_initialized= false;
}
}
/*
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)
+memcached_server_st *memcached_server_clone(memcached_server_st *destination,
+ const memcached_server_st *source)
{
- memcached_server_st *rv= NULL;
-
- /* We just do a normal create if ptr is missing */
- if (ptr == NULL)
+ /* We just do a normal create if source is missing */
+ if (source == NULL)
return NULL;
- rv = memcached_server_create_with(ptr->root, clone,
- ptr->hostname, ptr->port, ptr->weight,
- ptr->type);
- if (rv != NULL)
+ destination= memcached_server_create_with(source->root, destination,
+ source->hostname, source->port, source->weight,
+ source->type);
+ if (destination != NULL)
{
- rv->cached_errno= ptr->cached_errno;
- if (ptr->cached_server_error)
- rv->cached_server_error= strdup(ptr->cached_server_error);
+ destination->cached_errno= source->cached_errno;
+
+ if (source->cached_server_error)
+ destination->cached_server_error= strdup(source->cached_server_error);
}
- return rv;
+ return destination;
}
void *context,
uint32_t number_of_callbacks)
{
- unsigned int y;
+ uint32_t y;
- for (y= 0; y < ptr->number_of_hosts; y++)
+ for (y= 0; y < memcached_server_count(ptr); y++)
{
- unsigned int x;
+ uint32_t x;
+ memcached_server_instance_st *instance=
+ memcached_server_instance_fetch(ptr, y);
for (x= 0; x < number_of_callbacks; x++)
{
unsigned int iferror;
- iferror= (*callback[x])(ptr, &ptr->hosts[y], context);
+ iferror= (*callback[x])(ptr, instance, context);
if (iferror)
continue;
memcached_server_st *memcached_server_by_key(memcached_st *ptr, const char *key, size_t key_length, memcached_return_t *error)
{
uint32_t server_key;
+ memcached_server_instance_st *instance;
*error= memcached_validate_key_length(key_length,
ptr->flags.binary_protocol);
unlikely (*error != MEMCACHED_SUCCESS)
return NULL;
- unlikely (ptr->number_of_hosts == 0)
+ unlikely (memcached_server_count(ptr) == 0)
{
*error= MEMCACHED_NO_SERVERS;
return NULL;
}
server_key= memcached_generate_hash(ptr, key, key_length);
+ instance= memcached_server_instance_fetch(ptr, server_key);
- return memcached_server_clone(NULL, &ptr->hosts[server_key]);
+ return memcached_server_clone(NULL, instance);
}
const char *memcached_server_error(memcached_server_st *ptr)
{
- if (ptr)
- return ptr->cached_server_error;
- else
- return NULL;
+ return ptr
+ ? ptr->cached_server_error
+ : NULL;
}
void memcached_server_error_reset(memcached_server_st *ptr)
{
return ptr->last_disconnected_server;
}
+
+uint32_t memcached_server_list_count(memcached_server_st *ptr)
+{
+ return (ptr == NULL)
+ ? 0
+ : memcached_servers_count(ptr);
+}
+
+void memcached_server_list_free(memcached_server_st *ptr)
+{
+ server_list_free(NULL, ptr);
+}
+
+/**
+ @todo allow lists to query themselves even if they lack a root
+*/
+memcached_return_t memcached_server_remove(memcached_server_st *st_ptr)
+{
+ uint32_t x, host_index;
+ memcached_st *root= (memcached_st *)st_ptr->root;
+ memcached_server_st *list;
+
+ if (root == NULL)
+ return MEMCACHED_FAILURE;
+
+ list= memcached_server_list(root);
+
+ for (x= 0, host_index= 0; x < memcached_server_count(root); x++)
+ {
+ if (strncmp(list[x].hostname, st_ptr->hostname, NI_MAXHOST) != 0 || list[x].port != st_ptr->port)
+ {
+ if (host_index != x)
+ memcpy(list+host_index, list+x, sizeof(memcached_server_st));
+ host_index++;
+ }
+ }
+ root->number_of_hosts= host_index;
+
+ if (st_ptr->address_info)
+ {
+ freeaddrinfo(st_ptr->address_info);
+ st_ptr->address_info= NULL;
+ }
+ run_distribution(root);
+
+ return MEMCACHED_SUCCESS;
+}
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