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   1 /*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
   2  *
   3  *  Libmemcached library
   4  *
   5  *  Copyright (C) 2011 Data Differential, http://datadifferential.com/
   6  *  Copyright (C) 2006-2010 Brian Aker All rights reserved.
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   8  *  Redistribution and use in source and binary forms, with or without
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  10  *  met:
  11  *
  12  *      * Redistributions of source code must retain the above copyright
  13  *  notice, this list of conditions and the following disclaimer.
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  15  *      * Redistributions in binary form must reproduce the above
  16  *  copyright notice, this list of conditions and the following disclaimer
  17  *  in the documentation and/or other materials provided with the
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  20  *      * The names of its contributors may not be used to endorse or
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  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  37
  38
  39
  40 #include <libmemcached/common.h>
  41
  42 memcached_server_list_st
  43 memcached_server_list_append_with_weight(memcached_server_list_st ptr,
  44                                          const char *hostname, in_port_t port,
  45                                          uint32_t weight,
  46                                          memcached_return_t *error)
  47 {
  48   uint32_t count;
  49
  50   memcached_return_t unused;
  51   if (error == NULL)
  52     error= &unused;
  53
  54   if (hostname == NULL)
  55   {
  56     hostname= "localhost";
  57   }
  58
  59   if (hostname[0] == '/')
  60   {
  61     port = 0;
  62   }
  63   else if (not port)
  64   {
  65     port= MEMCACHED_DEFAULT_PORT;
  66   }
  67
  68
  69   /* Increment count for hosts */
  70   count= 1;
  71   if (ptr != NULL)
  72   {
  73     count+= memcached_server_list_count(ptr);
  74   }
  75
  76   memcached_server_list_st new_host_list= (memcached_server_st*)realloc(ptr, sizeof(memcached_server_st) * count);
  77   if (new_host_list == NULL)
  78   {
  79 #if 0
  80     *error= memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  81 #endif
  82     return NULL;
  83   }
  84
  85   memcached_string_t _hostname= { memcached_string_make_from_cstr(hostname) };
  86   /* @todo Check return type */
  87   if (__server_create_with(NULL, &new_host_list[count-1], _hostname, port, weight, port ? MEMCACHED_CONNECTION_TCP : MEMCACHED_CONNECTION_UNIX_SOCKET) == NULL)
  88   {
  89 #if 0
  90     *error= memcached_set_errno(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  91 #endif
  92     return NULL;
  93   }
  94
  95 #if 0
  96   // Handset allocated since
  97   new_host_list->options.is_allocated= true;
  98 #endif
  99
 100   /* Backwards compatibility hack */
 101   memcached_servers_set_count(new_host_list, count);
 102
 103   *error= MEMCACHED_SUCCESS;
 104   return new_host_list;
 105 }
 106
 107 memcached_server_list_st
 108 memcached_server_list_append(memcached_server_list_st ptr,
 109                              const char *hostname, in_port_t port,
 110                              memcached_return_t *error)
 111 {
 112   return memcached_server_list_append_with_weight(ptr, hostname, port, 0, error);
 113 }
 114
 115 uint32_t memcached_server_list_count(const memcached_server_list_st self)
 116 {
 117   return (self == NULL)
 118     ? 0
 119     : self->number_of_hosts;
 120 }
 121
 122 uint32_t memcached_instance_list_count(const memcached_st* self)
 123 {
 124   return (self == NULL)
 125     ? 0
 126     : self->number_of_hosts;
 127 }
 128
 129 uint32_t memcached_instance_count(const memcached_instance_st* self)
 130 {
 131   return (self == NULL)
 132     ? 0
 133     : self->number_of_hosts;
 134 }
 135
 136 memcached_instance_st *memcached_instance_list(const memcached_st *self)
 137 {
 138   if (self)
 139   {
 140     return self->servers;
 141   }
 142
 143   return NULL;
 144 }
 145
 146 void memcached_instance_set(memcached_st *self, memcached_instance_st *list)
 147 {
 148   self->servers= list;
 149 }
 150
 151 void memcached_server_list_free(memcached_server_list_st self)
 152 {
 153   if (self == NULL)
 154   {
 155     return;
 156   }
 157
 158   for (uint32_t x= 0; x < memcached_server_list_count(self); x++)
 159   {
 160     assert_msg(not memcached_is_allocated(&self[x]), "You have called memcached_server_list_free(), but you did not pass it a valid memcached_server_list_st");
 161     __server_free(&self[x]);
 162   }
 163
 164   libmemcached_free(self->root, self);
 165 }
 166
 167 void memcached_instance_list_free(memcached_instance_st* self, uint32_t instance_count)
 168 {
 169   if (self == NULL)
 170   {
 171     return;
 172   }
 173
 174   for (uint32_t x= 0; x < instance_count; x++)
 175   {
 176     assert_msg(not memcached_is_allocated(&self[x]), "You have called memcached_server_list_free(), but you did not pass it a valid memcached_server_list_st");
 177     __instance_free(&self[x]);
 178   }
 179
 180   libmemcached_free(self->root, self);
 181 }