#include <sys/time.h>
/* Protoypes (static) */
-static memcached_return_t server_add(memcached_st *ptr, const char *hostname,
- in_port_t port,
- uint32_t weight,
- memcached_connection_t type);
-
static memcached_return_t update_continuum(memcached_st *ptr);
static int compare_servers(const void *p1, const void *p2)
{
- int return_value;
memcached_server_instance_st a= (memcached_server_instance_st)p1;
memcached_server_instance_st b= (memcached_server_instance_st)p2;
- return_value= strcmp(a->hostname, b->hostname);
+ int return_value= strcmp(a->hostname, b->hostname);
if (return_value == 0)
{
{
memcached_server_write_instance_st instance;
- qsort(memcached_server_list(ptr), memcached_server_count(ptr), sizeof(memcached_server_st), compare_servers);
+ qsort(memcached_instance_list(ptr), memcached_server_count(ptr), sizeof(memcached_instance_st), compare_servers);
instance= memcached_server_instance_fetch(ptr, 0);
instance->number_of_hosts= memcached_server_count(ptr);
}
memcached_return_t run_distribution(memcached_st *ptr)
{
if (ptr->flags.use_sort_hosts)
+ {
sort_hosts(ptr);
+ }
switch (ptr->distribution)
{
case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY:
case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED:
return update_continuum(ptr);
+
case MEMCACHED_DISTRIBUTION_VIRTUAL_BUCKET:
case MEMCACHED_DISTRIBUTION_MODULA:
break;
+
case MEMCACHED_DISTRIBUTION_RANDOM:
srandom((uint32_t) time(NULL));
break;
+
case MEMCACHED_DISTRIBUTION_CONSISTENT_MAX:
default:
- WATCHPOINT_ASSERT(0); /* We have added a distribution without extending the logic */
+ assert_msg(0, "Invalid distribution type passed to run_distribution()");
}
return MEMCACHED_SUCCESS;
static memcached_return_t update_continuum(memcached_st *ptr)
{
uint32_t continuum_index= 0;
- memcached_server_st *list;
uint32_t pointer_counter= 0;
uint32_t pointer_per_server= MEMCACHED_POINTS_PER_SERVER;
uint32_t pointer_per_hash= 1;
return memcached_set_errno(*ptr, errno, MEMCACHED_AT);
}
- list= memcached_server_list(ptr);
+ memcached_instance_st *list= memcached_instance_list(ptr);
/* count live servers (those without a retry delay set) */
bool is_auto_ejecting= _is_auto_eject_host(ptr);
}
else
{
- if (ptr->ketama.next_distribution_rebuild == 0 || list[host_index].next_retry < ptr->ketama.next_distribution_rebuild)
+ if (ptr->ketama.next_distribution_rebuild == 0 or list[host_index].next_retry < ptr->ketama.next_distribution_rebuild)
{
ptr->ketama.next_distribution_rebuild= list[host_index].next_retry;
}
{
memcached_continuum_item_st *new_ptr;
- new_ptr= static_cast<memcached_continuum_item_st*>(libmemcached_realloc(ptr, ptr->ketama.continuum,
- sizeof(memcached_continuum_item_st) * (live_servers + MEMCACHED_CONTINUUM_ADDITION) * points_per_server));
+ new_ptr= libmemcached_xrealloc(ptr, ptr->ketama.continuum, (live_servers + MEMCACHED_CONTINUUM_ADDITION) * points_per_server, memcached_continuum_item_st);
if (new_ptr == 0)
+ {
return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
+ }
ptr->ketama.continuum= new_ptr;
ptr->ketama.continuum_count= live_servers + MEMCACHED_CONTINUUM_ADDITION;
{
for (uint32_t host_index = 0; host_index < memcached_server_count(ptr); ++host_index)
{
- if (! is_auto_ejecting || list[host_index].next_retry <= now.tv_sec)
+ if (is_auto_ejecting == false or list[host_index].next_retry <= now.tv_sec)
{
total_weight += list[host_index].weight;
}
for (uint32_t host_index= 0; host_index < memcached_server_count(ptr); ++host_index)
{
- if (is_auto_ejecting && list[host_index].next_retry > now.tv_sec)
+ if (is_auto_ejecting and 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= (uint32_t) ((floorf((float) (pct * MEMCACHED_POINTS_PER_SERVER_KETAMA / 4 * (float)live_servers + 0.0000000001))) * 4);
+ float pct= (float)list[host_index].weight / (float)total_weight;
+ pointer_per_server= (uint32_t) ((::floor((float) (pct * MEMCACHED_POINTS_PER_SERVER_KETAMA / 4 * (float)live_servers + 0.0000000001))) * 4);
pointer_per_hash= 4;
-#ifdef DEBUG
- printf("ketama_weighted:%s|%d|%llu|%u\n",
- list[host_index].hostname,
- list[host_index].port,
- (unsigned long long)list[host_index].weight,
- pointer_per_server);
-#endif
+ if (DEBUG)
+ {
+ printf("ketama_weighted:%s|%d|%llu|%u\n",
+ list[host_index].hostname,
+ list[host_index].port,
+ (unsigned long long)list[host_index].weight,
+ pointer_per_server);
+ }
}
pointer_index < pointer_per_server / pointer_per_hash;
pointer_index++)
{
- char sort_host[MEMCACHED_MAX_HOST_SORT_LENGTH]= "";
+ char sort_host[1 +MEMCACHED_NI_MAXHOST +1 +MEMCACHED_NI_MAXSERV +1 + MEMCACHED_NI_MAXSERV ]= "";
int sort_host_length;
// Spymemcached ketema key format is: hostname/ip:port-index
// If hostname is not available then: /ip:port-index
- sort_host_length= snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
+ sort_host_length= snprintf(sort_host, sizeof(sort_host),
"/%s:%u-%u",
list[host_index].hostname,
(uint32_t)list[host_index].port,
pointer_index);
- if (sort_host_length >= MEMCACHED_MAX_HOST_SORT_LENGTH || sort_host_length < 0)
+ if (size_t(sort_host_length) >= sizeof(sort_host) or sort_host_length < 0)
{
- return MEMCACHED_FAILURE;
+ return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT,
+ memcached_literal_param("snprintf(sizeof(sort_host))"));
}
-#ifdef DEBUG
- printf("update_continuum: key is %s\n", sort_host);
-#endif
- WATCHPOINT_ASSERT(sort_host_length);
+ if (DEBUG)
+ {
+ fprintf(stdout, "update_continuum: key is %s\n", sort_host);
+ }
if (is_ketama_weighted)
{
for (uint32_t x= 0; x < pointer_per_hash; x++)
{
uint32_t value= ketama_server_hash(sort_host, (size_t)sort_host_length, x);
- ptr->ketama.continuum[continuum_index].index= host_index;
- ptr->ketama.continuum[continuum_index++].value= value;
+ ptr->ketama.continuum[continuum_index].index= host_index;
+ ptr->ketama.continuum[continuum_index++].value= value;
}
}
else
pointer_index <= pointer_per_server / pointer_per_hash;
pointer_index++)
{
- char sort_host[MEMCACHED_MAX_HOST_SORT_LENGTH]= "";
+ char sort_host[MEMCACHED_NI_MAXHOST +1 +MEMCACHED_NI_MAXSERV +1 +MEMCACHED_NI_MAXSERV]= "";
int sort_host_length;
if (list[host_index].port == MEMCACHED_DEFAULT_PORT)
{
- sort_host_length= snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
+ sort_host_length= snprintf(sort_host, sizeof(sort_host),
"%s-%u",
list[host_index].hostname,
pointer_index - 1);
}
else
{
- sort_host_length= snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
+ sort_host_length= snprintf(sort_host, sizeof(sort_host),
"%s:%u-%u",
list[host_index].hostname,
(uint32_t)list[host_index].port,
pointer_index - 1);
}
- if (sort_host_length >= MEMCACHED_MAX_HOST_SORT_LENGTH || sort_host_length < 0)
+ if (size_t(sort_host_length) >= sizeof(sort_host) or sort_host_length < 0)
{
- return MEMCACHED_FAILURE;
+ return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT,
+ memcached_literal_param("snprintf(sizeof(sort_host)))"));
}
- WATCHPOINT_ASSERT(sort_host_length);
-
if (is_ketama_weighted)
{
for (uint32_t x = 0; x < pointer_per_hash; x++)
{
- uint32_t value= ketama_server_hash(sort_host, (size_t)sort_host_length, x);
- ptr->ketama.continuum[continuum_index].index= host_index;
- ptr->ketama.continuum[continuum_index++].value= value;
+ uint32_t value= ketama_server_hash(sort_host, (size_t)sort_host_length, x);
+ ptr->ketama.continuum[continuum_index].index= host_index;
+ ptr->ketama.continuum[continuum_index++].value= value;
}
}
else
ptr->ketama.continuum_points_counter= pointer_counter;
qsort(ptr->ketama.continuum, ptr->ketama.continuum_points_counter, sizeof(memcached_continuum_item_st), continuum_item_cmp);
-#ifdef DEBUG
- for (uint32_t pointer_index= 0; memcached_server_count(ptr) && pointer_index < ((live_servers * MEMCACHED_POINTS_PER_SERVER) - 1); pointer_index++)
+ if (DEBUG)
{
- WATCHPOINT_ASSERT(ptr->ketama.continuum[pointer_index].value <= ptr->ketama.continuum[pointer_index + 1].value);
+ for (uint32_t pointer_index= 0; memcached_server_count(ptr) && pointer_index < ((live_servers * MEMCACHED_POINTS_PER_SERVER) - 1); pointer_index++)
+ {
+ WATCHPOINT_ASSERT(ptr->ketama.continuum[pointer_index].value <= ptr->ketama.continuum[pointer_index + 1].value);
+ }
}
-#endif
return MEMCACHED_SUCCESS;
}
+static memcached_return_t server_add(memcached_st *ptr,
+ const memcached_string_t& hostname,
+ in_port_t port,
+ uint32_t weight,
+ memcached_connection_t type)
+{
+ assert_msg(ptr, "Programmer mistake, somehow server_add() was passed a NULL memcached_st");
+
+ memcached_instance_st *new_host_list= libmemcached_xrealloc(ptr, memcached_instance_list(ptr), (ptr->number_of_hosts + 1), memcached_instance_st);
+
+ if (new_host_list == NULL)
+ {
+ return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
+ }
+
+ memcached_instance_set(ptr, new_host_list);
+
+ /* TODO: Check return type */
+ memcached_server_write_instance_st instance= memcached_server_instance_fetch(ptr, memcached_server_count(ptr));
+
+ if (__instance_create_with(ptr, instance, hostname, port, weight, type) == NULL)
+ {
+ return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
+ }
+
+ if (weight > 1)
+ {
+ ptr->ketama.weighted= true;
+ }
+
+ ptr->number_of_hosts++;
+
+ // @note we place the count in the bottom of the server list
+ instance= memcached_server_instance_fetch(ptr, 0);
+ memcached_instance_set_count(instance, memcached_server_count(ptr));
+
+ return run_distribution(ptr);
+}
+
memcached_return_t memcached_server_push(memcached_st *ptr, const memcached_server_list_st list)
{
- if (not list)
+ if (list == NULL)
+ {
return MEMCACHED_SUCCESS;
+ }
uint32_t count= memcached_server_list_count(list);
- memcached_server_st *new_host_list;
- new_host_list= static_cast<memcached_server_st*>(libmemcached_realloc(ptr, memcached_server_list(ptr),
- sizeof(memcached_server_st) * (count + memcached_server_count(ptr))));
+ memcached_instance_st *new_host_list= libmemcached_xrealloc(ptr, memcached_instance_list(ptr), (count + memcached_server_count(ptr)), memcached_instance_st);
- if (not new_host_list)
+ if (new_host_list == NULL)
+ {
return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
+ }
- memcached_server_list_set(ptr, new_host_list);
+ memcached_instance_set(ptr, new_host_list);
for (uint32_t x= 0; x < count; x++)
{
memcached_server_write_instance_st instance;
- if ((ptr->flags.use_udp && list[x].type != MEMCACHED_CONNECTION_UDP)
- || ((list[x].type == MEMCACHED_CONNECTION_UDP)
- && ! (ptr->flags.use_udp)) )
+ WATCHPOINT_ASSERT(list[x].hostname[0] != 0);
+
+ // We have extended the array, and now we will find it, and use it.
+ instance= memcached_server_instance_fetch(ptr, memcached_server_count(ptr));
+ WATCHPOINT_ASSERT(instance);
+
+ memcached_string_t hostname= { memcached_string_make_from_cstr(list[x].hostname) };
+ if (__instance_create_with(ptr, instance,
+ hostname,
+ list[x].port, list[x].weight, list[x].type) == NULL)
{
- return MEMCACHED_INVALID_HOST_PROTOCOL;
+ return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
+ }
+
+ if (list[x].weight > 1)
+ {
+ ptr->ketama.weighted= true;
}
+ ptr->number_of_hosts++;
+ }
+
+ // Provides backwards compatibility with server list.
+ {
+ memcached_server_write_instance_st instance;
+ instance= memcached_server_instance_fetch(ptr, 0);
+ instance->number_of_hosts= memcached_server_count(ptr);
+ }
+
+ return run_distribution(ptr);
+}
+
+memcached_return_t memcached_instance_push(memcached_st *ptr, const struct memcached_instance_st* list, uint32_t number_of_hosts)
+{
+ if (list == NULL)
+ {
+ return MEMCACHED_SUCCESS;
+ }
+
+ memcached_instance_st* new_host_list= libmemcached_xrealloc(ptr, memcached_instance_list(ptr), (number_of_hosts +memcached_server_count(ptr)), memcached_instance_st);
+
+ if (new_host_list == NULL)
+ {
+ return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
+ }
+
+ memcached_instance_set(ptr, new_host_list);
+
+ for (uint32_t x= 0; x < number_of_hosts; x++)
+ {
+ memcached_server_write_instance_st instance;
+
WATCHPOINT_ASSERT(list[x].hostname[0] != 0);
+ // We have extended the array, and now we will find it, and use it.
instance= memcached_server_instance_fetch(ptr, memcached_server_count(ptr));
WATCHPOINT_ASSERT(instance);
- /* TODO check return type */
- instance= memcached_server_create_with(ptr, instance, list[x].hostname,
- list[x].port, list[x].weight, list[x].type);
- if (not instance)
+ memcached_string_t hostname= { memcached_string_make_from_cstr(list[x].hostname) };
+ if (__instance_create_with(ptr, instance,
+ hostname,
+ list[x].port, list[x].weight, list[x].type) == NULL)
{
return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
}
const char *filename,
uint32_t weight)
{
- if (! filename)
+ if (ptr == NULL)
+ {
return MEMCACHED_FAILURE;
+ }
+
+ memcached_string_t _filename= { memcached_string_make_from_cstr(filename) };
+ if (memcached_is_valid_servername(_filename) == false)
+ {
+ memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid filename for socket provided"));
+ }
- return server_add(ptr, filename, 0, weight, MEMCACHED_CONNECTION_UNIX_SOCKET);
+ return server_add(ptr, _filename, 0, weight, MEMCACHED_CONNECTION_UNIX_SOCKET);
}
memcached_return_t memcached_server_add_udp(memcached_st *ptr,
}
memcached_return_t memcached_server_add_udp_with_weight(memcached_st *ptr,
- const char *hostname,
- in_port_t port,
- uint32_t weight)
+ const char *,
+ in_port_t,
+ uint32_t)
{
- if (not port)
- port= MEMCACHED_DEFAULT_PORT;
-
- if (not hostname)
- hostname= "localhost";
+ if (ptr == NULL)
+ {
+ return MEMCACHED_INVALID_ARGUMENTS;
+ }
- return server_add(ptr, hostname, port, weight, MEMCACHED_CONNECTION_UDP);
+ return memcached_set_error(*ptr, MEMCACHED_DEPRECATED, MEMCACHED_AT);
}
memcached_return_t memcached_server_add(memcached_st *ptr,
in_port_t port,
uint32_t weight)
{
- if (not port)
+ if (ptr == NULL)
+ {
+ return MEMCACHED_INVALID_ARGUMENTS;
+ }
+
+ if (port == 0)
+ {
port= MEMCACHED_DEFAULT_PORT;
+ }
- if (not hostname)
+ size_t hostname_length= hostname ? strlen(hostname) : 0;
+ if (hostname_length == 0)
+ {
hostname= "localhost";
+ hostname_length= memcached_literal_param_size("localhost");
+ }
- return server_add(ptr, hostname, port, weight, MEMCACHED_CONNECTION_TCP);
-}
-
-static memcached_return_t server_add(memcached_st *ptr, const char *hostname,
- in_port_t port,
- uint32_t weight,
- memcached_connection_t type)
-{
+ memcached_string_t _hostname= { hostname, hostname_length };
- if ( (ptr->flags.use_udp and type != MEMCACHED_CONNECTION_UDP)
- or ( (type == MEMCACHED_CONNECTION_UDP) and (not ptr->flags.use_udp) ) )
+ if (memcached_is_valid_servername(_hostname) == false)
{
- return MEMCACHED_INVALID_HOST_PROTOCOL;
+ return memcached_set_error(*ptr, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("Invalid hostname provided"));
}
- memcached_server_st *new_host_list= static_cast<memcached_server_st*>(libmemcached_realloc(ptr, memcached_server_list(ptr),
- sizeof(memcached_server_st) * (ptr->number_of_hosts + 1)));
-
- if (not new_host_list)
- return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
-
- memcached_server_list_set(ptr, new_host_list);
-
- /* TODO: Check return type */
- memcached_server_write_instance_st instance= memcached_server_instance_fetch(ptr, memcached_server_count(ptr));
-
- (void)memcached_server_create_with(ptr, instance, hostname, port, weight, type);
+ return server_add(ptr, _hostname, port, weight, _hostname.c_str[0] == '/' ? MEMCACHED_CONNECTION_UNIX_SOCKET : MEMCACHED_CONNECTION_TCP);
+}
- if (weight > 1)
- {
- ptr->ketama.weighted= true;
- }
+memcached_return_t memcached_server_add_parsed(memcached_st *ptr,
+ const char *hostname,
+ size_t hostname_length,
+ in_port_t port,
+ uint32_t weight)
+{
+ char buffer[NI_MAXHOST];
- ptr->number_of_hosts++;
+ memcpy(buffer, hostname, hostname_length);
+ buffer[hostname_length]= 0;
- instance= memcached_server_instance_fetch(ptr, 0);
- memcached_servers_set_count(instance, memcached_server_count(ptr));
+ memcached_string_t _hostname= { buffer, hostname_length };
- return run_distribution(ptr);
+ return server_add(ptr, _hostname,
+ port,
+ weight,
+ MEMCACHED_CONNECTION_TCP);
}
projects / m6w6 / libmemcached / blobdiff