git.m6w6.name Git - m6w6/libmemcached/blob - libmemcachedutil/ping.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  * Summary: connects to a host, and makes sure it is alive.
  37  *
  38  */
  39
  40 #include <libmemcachedutil/common.h>
  41
  42 bool libmemcached_util_ping(const char *hostname, in_port_t port, memcached_return_t *ret)
  43 {
  44   memcached_return_t unused;
  45   if (ret == NULL)
  46   {
  47     ret= &unused;
  48   }
  49
  50   memcached_st *memc_ptr= memcached_create(NULL);
  51   if (memc_ptr == NULL)
  52   {
  53     *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  54     return false;
  55   }
  56
  57   if (memcached_success((*ret= memcached_behavior_set(memc_ptr, MEMCACHED_BEHAVIOR_CONNECT_TIMEOUT, 400000))))
  58   {
  59     memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
  60     if (memcached_success(rc))
  61     {
  62       rc= memcached_version(memc_ptr);
  63     }
  64
  65     if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
  66     {
  67       memcached_server_instance_st instance=
  68         memcached_server_instance_by_position(memc_ptr, 0);
  69
  70       assert_msg(instance and memcached_server_error(instance), " ");
  71       if (instance and memcached_server_error(instance))
  72       {
  73         rc= memcached_server_error_return(instance);
  74       }
  75     }
  76
  77     *ret= rc;
  78   }
  79   memcached_free(memc_ptr);
  80
  81   return memcached_success(*ret);
  82 }
  83
  84 bool libmemcached_util_ping2(const char *hostname, in_port_t port, const char *username, const char *password,  memcached_return_t *ret)
  85 {
  86   if (username == NULL)
  87   {
  88     return libmemcached_util_ping(hostname, port, ret);
  89   }
  90
  91   memcached_return_t unused;
  92   if (not ret)
  93     ret= &unused;
  94
  95   if (LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  96   {
  97     *ret= MEMCACHED_NOT_SUPPORTED;
  98     return false;
  99   }
 100
 101   memcached_st *memc_ptr= memcached_create(NULL);
 102   if (not memc_ptr)
 103   {
 104     *ret= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 105     return false;
 106   }
 107
 108   if (memcached_failed(*ret= memcached_set_sasl_auth_data(memc_ptr, username, password)))
 109   {
 110     memcached_free(memc_ptr);
 111     return false;
 112   }
 113
 114   memcached_return_t rc= memcached_server_add(memc_ptr, hostname, port);
 115   if (memcached_success(rc))
 116   {
 117     rc= memcached_version(memc_ptr);
 118   }
 119
 120   if (memcached_failed(rc) and rc == MEMCACHED_SOME_ERRORS)
 121   {
 122     memcached_server_instance_st instance=
 123       memcached_server_instance_by_position(memc_ptr, 0);
 124
 125     assert_msg(instance and memcached_server_error(instance), " ");
 126     if (instance and memcached_server_error(instance))
 127     {
 128       rc= memcached_server_error_return(instance);
 129     }
 130   }
 131   memcached_free(memc_ptr);
 132
 133   *ret= rc;
 134
 135   return memcached_success(rc);
 136 }