git.m6w6.name Git - awesomized/libmemcached/blob - clients/memexist.cc

   1 /* LibMemcached
   2  * Copyright (C) 2006-2009 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary:
   9  *
  10  */
  11 #include "config.h"
  12
  13 #include <cstdio>
  14 #include <cstring>
  15 #include <getopt.h>
  16 #include <iostream>
  17 #include <unistd.h>
  18
  19 #include <libmemcached/memcached.h>
  20 #include "client_options.h"
  21 #include "utilities.h"
  22
  23 static int opt_binary= 0;
  24 static int opt_verbose= 0;
  25 static char *opt_servers= NULL;
  26 static char *opt_hash= NULL;
  27 static char *opt_username;
  28 static char *opt_passwd;
  29
  30 #define PROGRAM_NAME "memexist"
  31 #define PROGRAM_DESCRIPTION "Check for the existance of a key within a cluster."
  32
  33 /* Prototypes */
  34 static void options_parse(int argc, char *argv[]);
  35
  36 int main(int argc, char *argv[])
  37 {
  38   memcached_st *memc;
  39   memcached_server_st *servers;
  40
  41   options_parse(argc, argv);
  42   initialize_sockets();
  43
  44   if (opt_servers == 0)
  45   {
  46     char *temp;
  47
  48     if ((temp= getenv("MEMCACHED_SERVERS")))
  49     {
  50       opt_servers= strdup(temp);
  51     }
  52     else
  53     {
  54       std::cerr << "No Servers provided" << std::endl;
  55       return EXIT_FAILURE;
  56     }
  57   }
  58
  59   memc= memcached_create(NULL);
  60   process_hash_option(memc, opt_hash);
  61
  62   servers= memcached_servers_parse(opt_servers);
  63   memcached_server_push(memc, servers);
  64   memcached_server_list_free(servers);
  65   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  66                          (uint64_t) opt_binary);
  67
  68   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  69   {
  70     memcached_free(memc);
  71     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  72     return EXIT_FAILURE;
  73   }
  74
  75   if (opt_username)
  76   {
  77     memcached_return_t ret;
  78     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
  79     {
  80       std::cerr << memcached_last_error_message(memc) << std::endl;
  81       memcached_free(memc);
  82       return EXIT_FAILURE;
  83     }
  84   }
  85
  86   int return_code= EXIT_SUCCESS;
  87
  88   while (optind < argc)
  89   {
  90     memcached_return_t rc= memcached_exist(memc, argv[optind], strlen(argv[optind]));
  91
  92     if (rc == MEMCACHED_NOTFOUND)
  93     {
  94       if (opt_verbose)
  95       {
  96         std::cout << "Could not find key \"" << argv[optind] << "\"" << std::endl;
  97       }
  98
  99       return_code= EXIT_FAILURE;
 100     }
 101     else if (memcached_failed(rc))
 102     {
 103       if (opt_verbose)
 104       {
 105         std::cerr << "Fatal error for key \"" << argv[optind] << "\" :" <<  memcached_last_error_message(memc) << std::endl;
 106       }
 107
 108       return_code= EXIT_FAILURE;
 109     }
 110     else // success
 111     {
 112       if (opt_verbose)
 113       {
 114         std::cout << "Found key " << argv[optind] << std::endl;
 115       }
 116     }
 117
 118     optind++;
 119   }
 120
 121   memcached_free(memc);
 122
 123   if (opt_servers)
 124   {
 125     free(opt_servers);
 126   }
 127
 128   if (opt_hash)
 129   {
 130     free(opt_hash);
 131   }
 132
 133   return return_code;
 134 }
 135
 136
 137 static void options_parse(int argc, char *argv[])
 138 {
 139   memcached_programs_help_st help_options[]=
 140   {
 141     {0},
 142   };
 143
 144   static struct option long_options[]=
 145   {
 146     {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 147     {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 148     {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 149     {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 150     {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 151     {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 152     {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 153     {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 154     {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 155     {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 156     {0, 0, 0, 0},
 157   };
 158
 159   bool opt_version= false;
 160   bool opt_help= false;
 161   int option_index= 0;
 162
 163   while (1)
 164   {
 165     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 166     if (option_rv == -1)
 167     {
 168       break;
 169     }
 170
 171     switch (option_rv)
 172     {
 173     case 0:
 174       break;
 175
 176     case OPT_BINARY:
 177       opt_binary = 1;
 178       break;
 179
 180     case OPT_VERBOSE: /* --verbose or -v */
 181       opt_verbose = OPT_VERBOSE;
 182       break;
 183
 184     case OPT_DEBUG: /* --debug or -d */
 185       opt_verbose = OPT_DEBUG;
 186       break;
 187
 188     case OPT_VERSION: /* --version or -V */
 189       opt_version= true;
 190       break;
 191
 192     case OPT_HELP: /* --help or -h */
 193       opt_help= true;
 194       break;
 195
 196     case OPT_SERVERS: /* --servers or -s */
 197       opt_servers= strdup(optarg);
 198       break;
 199
 200     case OPT_HASH:
 201       opt_hash= strdup(optarg);
 202       break;
 203
 204     case OPT_USERNAME:
 205       opt_username= optarg;
 206       break;
 207
 208     case OPT_PASSWD:
 209       opt_passwd= optarg;
 210       break;
 211
 212     case OPT_QUIET:
 213       close_stdio();
 214       break;
 215
 216     case '?':
 217       /* getopt_long already printed an error message. */
 218       exit(EXIT_SUCCESS);
 219
 220     default:
 221       abort();
 222     }
 223   }
 224
 225   if (opt_version)
 226   {
 227     version_command(PROGRAM_NAME);
 228     exit(EXIT_SUCCESS);
 229   }
 230
 231   if (opt_help)
 232   {
 233     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 234     exit(EXIT_SUCCESS);
 235   }
 236 }