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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
   9  *  modification, are permitted provided that the following conditions are
  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
  18  *  distribution.
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  20  *      * The names of its contributors may not be used to endorse or
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  22  *  written permission.
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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   memcached_server_list_st new_host_list;
  50
  51   memcached_return_t unused;
  52   if (error == NULL)
  53     error= &unused;
  54
  55   if (hostname == NULL)
  56   {
  57     hostname= "localhost";
  58   }
  59
  60   if (hostname[0] == '/')
  61   {
  62     port = 0;
  63   }
  64   else if (not port)
  65   {
  66     port= MEMCACHED_DEFAULT_PORT;
  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   new_host_list= (memcached_server_write_instance_st)realloc(ptr, sizeof(memcached_server_st) * count);
  77   if (not new_host_list)
  78   {
  79     *error= memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  80     return NULL;
  81   }
  82
  83   /* @todo Check return type */
  84   if (not __server_create_with(NULL, &new_host_list[count-1], hostname, port, weight, port ? MEMCACHED_CONNECTION_TCP : MEMCACHED_CONNECTION_UNIX_SOCKET))
  85   {
  86     *error= memcached_set_errno(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  87     return NULL;
  88   }
  89
  90 #if 0
  91   // Handset allocated since
  92   new_host_list->options.is_allocated= true;
  93 #endif
  94
  95   /* Backwards compatibility hack */
  96   memcached_servers_set_count(new_host_list, count);
  97
  98   *error= MEMCACHED_SUCCESS;
  99   return new_host_list;
 100 }
 101
 102 memcached_server_list_st
 103 memcached_server_list_append(memcached_server_list_st ptr,
 104                              const char *hostname, in_port_t port,
 105                              memcached_return_t *error)
 106 {
 107   return memcached_server_list_append_with_weight(ptr, hostname, port, 0, error);
 108 }
 109
 110 uint32_t memcached_server_list_count(const memcached_server_list_st self)
 111 {
 112   return (self == NULL)
 113     ? 0
 114     : self->number_of_hosts;
 115 }
 116
 117 memcached_server_st *memcached_server_list(const memcached_st *self)
 118 {
 119   return self->servers;
 120 }
 121
 122 void memcached_server_list_set(memcached_st *self, memcached_server_st *list)
 123 {
 124   self->servers= list;
 125 }
 126
 127 void memcached_server_list_free(memcached_server_list_st self)
 128 {
 129   if (not self)
 130     return;
 131
 132   for (uint32_t x= 0; x < memcached_server_list_count(self); x++)
 133   {
 134     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");
 135     __server_free(&self[x]);
 136   }
 137
 138   libmemcached_free(self->root, self);
 139 }