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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
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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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  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  37
  38
  39
  40 #include <libmemcached/common.h>
  41 #include <libmemcached/assert.hpp>
  42
  43 memcached_server_list_st
  44 memcached_server_list_append_with_weight(memcached_server_list_st ptr,
  45                                          const char *hostname, in_port_t port,
  46                                          uint32_t weight,
  47                                          memcached_return_t *error)
  48 {
  49   uint32_t count;
  50   memcached_server_list_st new_host_list;
  51
  52   memcached_return_t unused;
  53   if (error == NULL)
  54     error= &unused;
  55
  56   if (hostname == NULL)
  57   {
  58     hostname= "localhost";
  59   }
  60
  61   if (hostname[0] == '/')
  62   {
  63     port = 0;
  64   }
  65   else if (not port)
  66   {
  67     port= MEMCACHED_DEFAULT_PORT;
  68   }
  69
  70   /* Increment count for hosts */
  71   count= 1;
  72   if (ptr != NULL)
  73   {
  74     count+= memcached_server_list_count(ptr);
  75   }
  76
  77   new_host_list= (memcached_server_write_instance_st)realloc(ptr, sizeof(memcached_server_st) * count);
  78   if (not new_host_list)
  79   {
  80     *error= memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  81     return NULL;
  82   }
  83
  84   /* @todo Check return type */
  85   if (not __server_create_with(NULL, &new_host_list[count-1], hostname, port, weight, port ? MEMCACHED_CONNECTION_TCP : MEMCACHED_CONNECTION_UNIX_SOCKET))
  86   {
  87     *error= memcached_set_errno(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
  88     return NULL;
  89   }
  90
  91 #if 0
  92   // Handset allocated since
  93   new_host_list->options.is_allocated= true;
  94 #endif
  95
  96   /* Backwards compatibility hack */
  97   memcached_servers_set_count(new_host_list, count);
  98
  99   *error= MEMCACHED_SUCCESS;
 100   return new_host_list;
 101 }
 102
 103 memcached_server_list_st
 104 memcached_server_list_append(memcached_server_list_st ptr,
 105                              const char *hostname, in_port_t port,
 106                              memcached_return_t *error)
 107 {
 108   return memcached_server_list_append_with_weight(ptr, hostname, port, 0, error);
 109 }
 110
 111 uint32_t memcached_server_list_count(const memcached_server_list_st self)
 112 {
 113   return (self == NULL)
 114     ? 0
 115     : self->number_of_hosts;
 116 }
 117
 118 memcached_server_st *memcached_server_list(const memcached_st *self)
 119 {
 120   return self->servers;
 121 }
 122
 123 void memcached_server_list_set(memcached_st *self, memcached_server_st *list)
 124 {
 125   self->servers= list;
 126 }
 127
 128 void memcached_server_list_free(memcached_server_list_st self)
 129 {
 130   if (not self)
 131     return;
 132
 133   for (uint32_t x= 0; x < memcached_server_list_count(self); x++)
 134   {
 135     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");
 136     __server_free(&self[x]);
 137   }
 138
 139   libmemcached_free(self->root, self);
 140 }