git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/verbosity.cc

   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) 2010 Brian Aker All rights reserved.
   7  *
   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.
  14  *
  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.
  19  *
  20  *      * The names of its contributors may not be used to endorse or
  21  *  promote products derived from this software without specific prior
  22  *  written permission.
  23  *
  24  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  25  *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  26  *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  27  *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  28  *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  30  *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  31  *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  32  *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  33  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  34  *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  */
  37
  38 #include <libmemcached/common.h>
  39
  40 struct context_st
  41 {
  42   size_t length;
  43   const char *buffer;
  44 };
  45
  46 static memcached_return_t _set_verbosity(const memcached_st *,
  47                                          const memcached_server_st *server,
  48                                          void *context)
  49 {
  50  libmemcached_io_vector_st *vector= (libmemcached_io_vector_st *)context;
  51
  52   memcached_st local_memc;
  53   memcached_st *memc_ptr= memcached_create(&local_memc);
  54
  55   memcached_return_t rc= memcached_server_add(memc_ptr, memcached_server_name(server), memcached_server_port(server));
  56
  57   if (rc == MEMCACHED_SUCCESS)
  58   {
  59     memcached_server_write_instance_st instance= memcached_server_instance_fetch(memc_ptr, 0);
  60
  61
  62     rc= memcached_vdo(instance, vector, 4, true);
  63
  64     if (rc == MEMCACHED_SUCCESS)
  65     {
  66       char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
  67       rc= memcached_response(instance, buffer, sizeof(buffer), NULL);
  68     }
  69   }
  70
  71   memcached_free(memc_ptr);
  72
  73   return rc;
  74 }
  75
  76 memcached_return_t memcached_verbosity(memcached_st *ptr, uint32_t verbosity)
  77 {
  78   memcached_return_t rc;
  79   if (memcached_failed(rc= initialize_query(ptr, false)))
  80   {
  81     return rc;
  82   }
  83
  84   memcached_server_fn callbacks[1];
  85
  86   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
  87
  88   int send_length= snprintf(buffer, sizeof(buffer), "%u", verbosity);
  89   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE or send_length < 0)
  90   {
  91     return memcached_set_error(*ptr, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT,
  92                                memcached_literal_param("snprintf(MEMCACHED_DEFAULT_COMMAND_SIZE)"));
  93   }
  94
  95   libmemcached_io_vector_st vector[]=
  96   {
  97     { NULL, 0 },
  98     { memcached_literal_param("verbosity ") },
  99     { buffer, send_length },
 100     { memcached_literal_param("\r\n") }
 101   };
 102
 103   callbacks[0]= _set_verbosity;
 104
 105   return memcached_server_cursor(ptr, callbacks, vector, 1);
 106 }