git.m6w6.name Git - m6w6/libmemcached/blob - lib/memcached_storage.c

   1 /*
   2   Memcached library
   3
   4   memcached_set()
   5   memcached_replace()
   6   memcached_add()
   7
   8 */
   9
  10 #include <memcached.h>
  11
  12 static memcached_return memcached_send(memcached_st *ptr,
  13                                        char *key, size_t key_length,
  14                                        char *value, size_t value_length,
  15                                        time_t expiration,
  16                                        uint16_t  flags,
  17                                        char *verb)
  18 {
  19   size_t send_length;
  20   memcached_return rc;
  21   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
  22
  23   rc= memcached_connect(ptr);
  24
  25   if (rc != MEMCACHED_SUCCESS)
  26     return rc;
  27
  28   send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
  29                         "%s %.*s %u %u %u\r\n", verb,
  30                         key_length, key, flags, expiration, value_length);
  31   if ((send(ptr->fd, buffer, send_length, 0) == -1))
  32   {
  33     fprintf(stderr, "failed set on %.*s TCP\n", key_length+1, key);
  34
  35     return MEMCACHED_WRITE_FAILURE;
  36   }
  37
  38   send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
  39                         "%.*s\r\n",
  40                         value_length, value);
  41   if ((send(ptr->fd, buffer, send_length, 0) == -1))
  42   {
  43     fprintf(stderr, "failed set on %.*s TCP\n", key_length+1, key);
  44
  45     return MEMCACHED_WRITE_FAILURE;
  46   }
  47
  48   send_length= read(ptr->fd, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE);
  49
  50   if (send_length && buffer[0] == 'S')  /* STORED */
  51     return MEMCACHED_SUCCESS;
  52   else if (send_length && buffer[0] == 'N')  /* NOT_STORED */
  53     return MEMCACHED_NOTSTORED;
  54   else
  55     return MEMCACHED_READ_FAILURE;
  56 }
  57
  58 memcached_return memcached_set(memcached_st *ptr, char *key, size_t key_length,
  59                                char *value, size_t value_length,
  60                                time_t expiration,
  61                                uint16_t  flags)
  62 {
  63   return  memcached_send(ptr, key, key_length, value, value_length,
  64                          expiration, flags, "set");
  65 }
  66
  67 memcached_return memcached_add(memcached_st *ptr, char *key, size_t key_length,
  68                                char *value, size_t value_length,
  69                                time_t expiration,
  70                                uint16_t  flags)
  71 {
  72   return  memcached_send(ptr, key, key_length, value, value_length,
  73                          expiration, flags, "add");
  74 }
  75
  76 memcached_return memcached_replace(memcached_st *ptr, char *key, size_t key_length,
  77                                    char *value, size_t value_length,
  78                                    time_t expiration,
  79                                    uint16_t  flags)
  80 {
  81   return  memcached_send(ptr, key, key_length, value, value_length,
  82                          expiration, flags, "replace");
  83 }