return MEMCACHED_SUCCESS;
}
-void host_reset(memcached_st *ptr, memcached_server_st *host,
- const char *hostname, unsigned int port, uint32_t weight,
- memcached_connection type)
-{
- strncpy(host->hostname, hostname, MEMCACHED_MAX_HOST_LENGTH - 1);
- host->root= ptr ? ptr : NULL;
- host->port= port;
- host->weight= weight;
- host->fd= -1;
- host->type= type;
- host->read_ptr= host->read_buffer;
- if (ptr)
- host->next_retry= ptr->retry_timeout;
- host->sockaddr_inited= MEMCACHED_NOT_ALLOCATED;
-}
-
void server_list_free(memcached_st *ptr, memcached_server_st *servers)
{
unsigned int x;
servers[x].address_info= NULL;
}
- if (ptr && ptr->call_free)
+ if (ptr)
ptr->call_free(ptr, servers);
else
free(servers);
uint32_t pointer_per_hash= 1;
uint64_t total_weight= 0;
uint32_t is_ketama_weighted= 0;
+ uint32_t is_auto_ejecting= 0;
uint32_t points_per_server= 0;
+ uint32_t live_servers= 0;
+ struct timeval now;
+
+ if (gettimeofday(&now, NULL) != 0)
+ {
+ ptr->cached_errno = errno;
+ return MEMCACHED_ERRNO;
+ }
+
+ list = ptr->hosts;
+
+ /* count live servers (those without a retry delay set) */
+ is_auto_ejecting= memcached_behavior_get(ptr, MEMCACHED_BEHAVIOR_AUTO_EJECT_HOSTS);
+ if (is_auto_ejecting)
+ {
+ live_servers= 0;
+ ptr->next_distribution_rebuild= 0;
+ for (host_index= 0; host_index < ptr->number_of_hosts; ++host_index)
+ {
+ if (list[host_index].next_retry <= now.tv_sec)
+ live_servers++;
+ else
+ {
+ if (ptr->next_distribution_rebuild == 0 || list[host_index].next_retry < ptr->next_distribution_rebuild)
+ ptr->next_distribution_rebuild= list[host_index].next_retry;
+ }
+ }
+ }
+ else
+ live_servers= ptr->number_of_hosts;
is_ketama_weighted= memcached_behavior_get(ptr, MEMCACHED_BEHAVIOR_KETAMA_WEIGHTED);
points_per_server= is_ketama_weighted ? MEMCACHED_POINTS_PER_SERVER_KETAMA : MEMCACHED_POINTS_PER_SERVER;
- if (ptr->number_of_hosts > ptr->continuum_count)
+ if (live_servers == 0)
+ return MEMCACHED_SUCCESS;
+
+ if (live_servers > ptr->continuum_count)
{
memcached_continuum_item_st *new_ptr;
- if (ptr->call_realloc)
- new_ptr= (memcached_continuum_item_st *)ptr->call_realloc(ptr, ptr->continuum, sizeof(memcached_continuum_item_st) * (ptr->number_of_hosts + MEMCACHED_CONTINUUM_ADDITION) * points_per_server);
- else
- new_ptr= (memcached_continuum_item_st *)realloc(ptr->continuum, sizeof(memcached_continuum_item_st) * (ptr->number_of_hosts + MEMCACHED_CONTINUUM_ADDITION) * points_per_server);
+ new_ptr= ptr->call_realloc(ptr, ptr->continuum,
+ sizeof(memcached_continuum_item_st) * (live_servers + MEMCACHED_CONTINUUM_ADDITION) * points_per_server);
if (new_ptr == 0)
return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
ptr->continuum= new_ptr;
- ptr->continuum_count= ptr->number_of_hosts + MEMCACHED_CONTINUUM_ADDITION;
+ ptr->continuum_count= live_servers + MEMCACHED_CONTINUUM_ADDITION;
}
- list = ptr->hosts;
-
if (is_ketama_weighted)
{
for (host_index = 0; host_index < ptr->number_of_hosts; ++host_index)
{
list[host_index].weight = 1;
}
- total_weight += list[host_index].weight;
+ if (!is_auto_ejecting || list[host_index].next_retry <= now.tv_sec)
+ total_weight += list[host_index].weight;
}
}
for (host_index = 0; host_index < ptr->number_of_hosts; ++host_index)
{
+ if (is_auto_ejecting && list[host_index].next_retry > now.tv_sec)
+ continue;
+
if (is_ketama_weighted)
{
float pct = (float)list[host_index].weight / (float)total_weight;
- pointer_per_server= floorf(pct * MEMCACHED_POINTS_PER_SERVER_KETAMA / 4 * (float)(ptr->number_of_hosts) + 0.0000000001) * 4;
+ pointer_per_server= floorf(pct * MEMCACHED_POINTS_PER_SERVER_KETAMA / 4 * (float)live_servers + 0.0000000001) * 4;
pointer_per_hash= 4;
#ifdef HAVE_DEBUG
printf("ketama_weighted:%s|%d|%llu|%u\n",
if (is_ketama_weighted)
{
- int i;
+ unsigned int i;
for (i = 0; i < pointer_per_hash; i++)
{
value= ketama_server_hash(sort_host, sort_host_length, i);
}
else
{
- value= generate_hash_value(sort_host, sort_host_length, ptr->hash_continuum);
+ value= memcached_generate_hash_value(sort_host, sort_host_length, ptr->hash_continuum);
ptr->continuum[continuum_index].index= host_index;
ptr->continuum[continuum_index++].value= value;
}
qsort(ptr->continuum, ptr->continuum_points_counter, sizeof(memcached_continuum_item_st), continuum_item_cmp);
#ifdef HAVE_DEBUG
- for (index= 0; ptr->number_of_hosts && index < ((ptr->number_of_hosts * MEMCACHED_POINTS_PER_SERVER) - 1); index++)
+ for (index= 0; ptr->number_of_hosts && index < ((live_servers * MEMCACHED_POINTS_PER_SERVER) - 1); index++)
{
WATCHPOINT_ASSERT(ptr->continuum[index].value <= ptr->continuum[index + 1].value);
}
return MEMCACHED_SUCCESS;
count= list[0].count;
- if (ptr->call_realloc)
- new_host_list=
- (memcached_server_st *)ptr->call_realloc(ptr, ptr->hosts,
- sizeof(memcached_server_st) * (count + ptr->number_of_hosts));
- else
- new_host_list=
- (memcached_server_st *)realloc(ptr->hosts,
- sizeof(memcached_server_st) * (count + ptr->number_of_hosts));
+ new_host_list= ptr->call_realloc(ptr, ptr->hosts,
+ sizeof(memcached_server_st) * (count + ptr->number_of_hosts));
if (!new_host_list)
return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
for (x= 0; x < count; x++)
{
+ if ((ptr->flags & MEM_USE_UDP && list[x].type != MEMCACHED_CONNECTION_UDP)
+ || ((list[x].type == MEMCACHED_CONNECTION_UDP)
+ && ! (ptr->flags & MEM_USE_UDP)) )
+ return MEMCACHED_INVALID_HOST_PROTOCOL;
+
WATCHPOINT_ASSERT(list[x].hostname[0] != 0);
- host_reset(ptr, &ptr->hosts[ptr->number_of_hosts], list[x].hostname,
- list[x].port, list[x].weight, list[x].type);
+ memcached_server_create(ptr, &ptr->hosts[ptr->number_of_hosts]);
+ /* TODO check return type */
+ (void)memcached_server_create_with(ptr, &ptr->hosts[ptr->number_of_hosts], list[x].hostname,
+ list[x].port, list[x].weight, list[x].type);
ptr->number_of_hosts++;
}
ptr->hosts[0].count= ptr->number_of_hosts;
port= MEMCACHED_DEFAULT_PORT;
if (!hostname)
- hostname= "localhost";
+ hostname= "localhost";
return server_add(ptr, hostname, port, weight, MEMCACHED_CONNECTION_TCP);
}
{
memcached_server_st *new_host_list;
- if (ptr->call_realloc)
- new_host_list= (memcached_server_st *)ptr->call_realloc(ptr, ptr->hosts,
- sizeof(memcached_server_st) * (ptr->number_of_hosts+1));
- else
- new_host_list= (memcached_server_st *)realloc(ptr->hosts,
- sizeof(memcached_server_st) * (ptr->number_of_hosts+1));
+ if ( (ptr->flags & MEM_USE_UDP && type != MEMCACHED_CONNECTION_UDP)
+ || ( (type == MEMCACHED_CONNECTION_UDP) && !(ptr->flags & MEM_USE_UDP) ) )
+ return MEMCACHED_INVALID_HOST_PROTOCOL;
+
+ new_host_list= ptr->call_realloc(ptr, ptr->hosts,
+ sizeof(memcached_server_st) * (ptr->number_of_hosts+1));
+
if (new_host_list == NULL)
return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
ptr->hosts= new_host_list;
- host_reset(ptr, &ptr->hosts[ptr->number_of_hosts], hostname, port, weight, type);
+ /* TODO: Check return type */
+ (void)memcached_server_create_with(ptr, &ptr->hosts[ptr->number_of_hosts], hostname, port, weight, type);
ptr->number_of_hosts++;
ptr->hosts[0].count= ptr->number_of_hosts;
return NULL;
}
- host_reset(NULL, &new_host_list[count-1], hostname, port, weight, MEMCACHED_CONNECTION_TCP);
+ /* TODO: Check return type */
+ memcached_server_create_with(NULL, &new_host_list[count-1], hostname, port, weight, MEMCACHED_CONNECTION_TCP);
/* Backwards compatibility hack */
new_host_list[0].count= count;