Merge in changes around setting up better syntax for distribution.

[m6w6/libmemcached] / libmemcached / hosts.c

diff --git a/libmemcached/hosts.c b/libmemcached/hosts.c
index 4018a2581d7846865378e583b7b0eca997fadb8e..caff9add21182ed2eb8ce8fa3fe79f37d047ca01 100644 (file)
--- a/libmemcached/hosts.c
+++ b/libmemcached/hosts.c
@@ -17,6 +17,7 @@ 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)
@@ -58,6 +59,7 @@ memcached_return_t run_distribution(memcached_st *ptr)
   case MEMCACHED_DISTRIBUTION_CONSISTENT:
   case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA:
   case MEMCACHED_DISTRIBUTION_CONSISTENT_KETAMA_SPY:
+  case MEMCACHED_DISTRIBUTION_CONSISTENT_WEIGHTED:
     return update_continuum(ptr);
   case MEMCACHED_DISTRIBUTION_MODULA:
     break;
@@ -118,7 +120,7 @@ static memcached_return_t update_continuum(memcached_st *ptr)
 
   if (gettimeofday(&now, NULL) != 0)
   {
-    ptr->cached_errno = errno;
+    memcached_set_errno(ptr, errno, NULL);
     return MEMCACHED_ERRNO;
   }
 
@@ -129,15 +131,15 @@ static memcached_return_t update_continuum(memcached_st *ptr)
   if (is_auto_ejecting)
   {
     live_servers= 0;
-    ptr->next_distribution_rebuild= 0;
+    ptr->ketama.next_distribution_rebuild= 0;
     for (host_index= 0; host_index < memcached_server_count(ptr); ++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;
+        if (ptr->ketama.next_distribution_rebuild == 0 || list[host_index].next_retry < ptr->ketama.next_distribution_rebuild)
+          ptr->ketama.next_distribution_rebuild= list[host_index].next_retry;
       }
     }
   }
@@ -152,18 +154,18 @@ static memcached_return_t update_continuum(memcached_st *ptr)
   if (live_servers == 0)
     return MEMCACHED_SUCCESS;
 
-  if (live_servers > ptr->continuum_count)
+  if (live_servers > ptr->ketama.continuum_count)
   {
     memcached_continuum_item_st *new_ptr;
 
-    new_ptr= libmemcached_realloc(ptr, ptr->continuum,
+    new_ptr= libmemcached_realloc(ptr, ptr->ketama.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= live_servers + MEMCACHED_CONTINUUM_ADDITION;
+    ptr->ketama.continuum= new_ptr;
+    ptr->ketama.continuum_count= live_servers + MEMCACHED_CONTINUUM_ADDITION;
   }
 
   if (is_ketama_weighted)
@@ -206,15 +208,20 @@ static memcached_return_t update_continuum(memcached_st *ptr)
            pointer_index++)
       {
         char sort_host[MEMCACHED_MAX_HOST_SORT_LENGTH]= "";
-        size_t sort_host_length;
+        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= (size_t) snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
-                                            "/%s:%u-%u",
-                                            list[host_index].hostname,
-                                            (uint32_t)list[host_index].port,
-                                            pointer_index);
+        sort_host_length= snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
+                                   "/%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)
+        {
+          return MEMCACHED_FAILURE;
+        }
 #ifdef DEBUG
         printf("update_continuum: key is %s\n", sort_host);
 #endif
@@ -225,16 +232,16 @@ static memcached_return_t update_continuum(memcached_st *ptr)
         {
           for (uint32_t x= 0; x < pointer_per_hash; x++)
           {
-             value= ketama_server_hash(sort_host, sort_host_length, x);
-             ptr->continuum[continuum_index].index= host_index;
-             ptr->continuum[continuum_index++].value= value;
+             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
         {
-          value= hashkit_digest(&ptr->distribution_hashkit, sort_host, sort_host_length);
-          ptr->continuum[continuum_index].index= host_index;
-          ptr->continuum[continuum_index++].value= value;
+          value= hashkit_digest(&ptr->distribution_hashkit, sort_host, (size_t)sort_host_length);
+          ptr->ketama.continuum[continuum_index].index= host_index;
+          ptr->ketama.continuum[continuum_index++].value= value;
         }
       }
     }
@@ -245,22 +252,27 @@ static memcached_return_t update_continuum(memcached_st *ptr)
            pointer_index++)
       {
         char sort_host[MEMCACHED_MAX_HOST_SORT_LENGTH]= "";
-        size_t sort_host_length;
+        int sort_host_length;
 
         if (list[host_index].port == MEMCACHED_DEFAULT_PORT)
         {
-          sort_host_length= (size_t) snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
-                                              "%s-%u",
-                                              list[host_index].hostname,
-                                              pointer_index - 1);
+          sort_host_length= snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
+                                     "%s-%u",
+                                     list[host_index].hostname,
+                                     pointer_index - 1);
         }
         else
         {
-          sort_host_length= (size_t) snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
-                                              "%s:%u-%u",
-                                              list[host_index].hostname,
-                                              (uint32_t)list[host_index].port,
-                                              pointer_index - 1);
+          sort_host_length= snprintf(sort_host, MEMCACHED_MAX_HOST_SORT_LENGTH,
+                                     "%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)
+        {
+          return MEMCACHED_FAILURE;
         }
 
         WATCHPOINT_ASSERT(sort_host_length);
@@ -269,16 +281,16 @@ static memcached_return_t update_continuum(memcached_st *ptr)
         {
           for (uint32_t x = 0; x < pointer_per_hash; x++)
           {
-             value= ketama_server_hash(sort_host, sort_host_length, x);
-             ptr->continuum[continuum_index].index= host_index;
-             ptr->continuum[continuum_index++].value= value;
+             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
         {
-          value= hashkit_digest(&ptr->distribution_hashkit, sort_host, sort_host_length);
-          ptr->continuum[continuum_index].index= host_index;
-          ptr->continuum[continuum_index++].value= value;
+          value= hashkit_digest(&ptr->distribution_hashkit, sort_host, (size_t)sort_host_length);
+          ptr->ketama.continuum[continuum_index].index= host_index;
+          ptr->ketama.continuum[continuum_index++].value= value;
         }
       }
     }
@@ -289,8 +301,8 @@ static memcached_return_t update_continuum(memcached_st *ptr)
   WATCHPOINT_ASSERT(ptr);
   WATCHPOINT_ASSERT(ptr->continuum);
   WATCHPOINT_ASSERT(memcached_server_count(ptr) * MEMCACHED_POINTS_PER_SERVER <= MEMCACHED_CONTINUUM_SIZE);
-  ptr->continuum_points_counter= pointer_counter;
-  qsort(ptr->continuum, ptr->continuum_points_counter, sizeof(memcached_continuum_item_st), continuum_item_cmp);
+  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 (pointer_index= 0; memcached_server_count(ptr) && pointer_index < ((live_servers * MEMCACHED_POINTS_PER_SERVER) - 1); pointer_index++)
@@ -327,7 +339,9 @@ memcached_return_t memcached_server_push(memcached_st *ptr, const memcached_serv
     if ((ptr->flags.use_udp && list[x].type != MEMCACHED_CONNECTION_UDP)
             || ((list[x].type == MEMCACHED_CONNECTION_UDP)
             && ! (ptr->flags.use_udp)) )
+    {
       return MEMCACHED_INVALID_HOST_PROTOCOL;
+    }
 
     WATCHPOINT_ASSERT(list[x].hostname[0] != 0);
 
@@ -437,3 +451,20 @@ static memcached_return_t server_add(memcached_st *ptr, const char *hostname,
 
   return run_distribution(ptr);
 }
+
+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];
+
+  memcpy(buffer, hostname, hostname_length);
+  buffer[hostname_length]= 0;
+
+  return server_add(ptr, buffer,
+                    port,
+                    weight,
+                    MEMCACHED_CONNECTION_TCP);
+}