git.m6w6.name Git - awesomized/libmemcached/blob - lib/memcached_delete.c

   1 #include "common.h"
   2
   3 memcached_return memcached_delete(memcached_st *ptr, char *key, size_t key_length,
   4                                   time_t expiration)
   5 {
   6   char to_write;
   7   size_t send_length, sent_length;
   8   memcached_return rc;
   9   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
  10   unsigned int server_key;
  11
  12   LIBMEMCACHED_MEMCACHED_DELETE_START();
  13
  14   if (ptr->hosts == NULL || ptr->number_of_hosts == 0)
  15     return MEMCACHED_NO_SERVERS;
  16
  17   server_key= memcached_generate_hash(ptr, key, key_length);
  18
  19   if ((rc= memcached_connect(ptr, server_key)) != MEMCACHED_SUCCESS)
  20     return rc;
  21
  22
  23   if (expiration)
  24     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
  25                           "delete %.*s %llu\r\n", (int)key_length, key,
  26                           (unsigned long long)expiration);
  27   else
  28     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
  29                           "delete %.*s\r\n", (int)key_length, key);
  30
  31   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
  32   {
  33     rc= MEMCACHED_WRITE_FAILURE;
  34     goto error;
  35   }
  36
  37   if ((ptr->flags & MEM_NO_BLOCK))
  38     to_write= 0;
  39   else
  40     to_write= 1;
  41
  42   if ((sent_length= memcached_io_write(ptr, server_key, buffer, send_length, to_write)) == -1)
  43   {
  44     memcached_quit_server(ptr, server_key);
  45     rc= MEMCACHED_WRITE_FAILURE;
  46     goto error;
  47   }
  48
  49   if ((ptr->flags & MEM_NO_BLOCK))
  50   {
  51     rc= MEMCACHED_SUCCESS;
  52     memcached_server_response_increment(ptr, server_key);
  53   }
  54   else
  55   {
  56     rc= memcached_response(ptr, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, server_key);
  57     if (rc == MEMCACHED_DELETED)
  58       rc= MEMCACHED_SUCCESS;
  59   }
  60
  61   LIBMEMCACHED_MEMCACHED_DELETE_END();
  62
  63 error:
  64   return rc;
  65 }