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

   1 /* LibMemcached
   2  * Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/
   3  * Copyright (C) 2006-2009 Brian Aker
   4  * All rights reserved.
   5  *
   6  * Use and distribution licensed under the BSD license.  See
   7  * the COPYING file in the parent directory for full text.
   8  *
   9  * Summary:
  10  *
  11  */
  12 #include "mem_config.h"
  13
  14 #include <cstdio>
  15 #include <cstring>
  16 #include <getopt.h>
  17 #include <iostream>
  18 #include <unistd.h>
  19
  20 #include <libmemcached-1.0/memcached.h>
  21 #include "client_options.h"
  22 #include "utilities.h"
  23
  24 static int opt_binary= 0;
  25 static int opt_verbose= 0;
  26 static char *opt_servers= NULL;
  27 static char *opt_hash= NULL;
  28 static char *opt_username;
  29 static char *opt_passwd;
  30
  31 #define PROGRAM_NAME "memexist"
  32 #define PROGRAM_DESCRIPTION "Check for the existance of a key within a cluster."
  33
  34 /* Prototypes */
  35 static void options_parse(int argc, char *argv[]);
  36
  37 int main(int argc, char *argv[])
  38 {
  39   options_parse(argc, argv);
  40   initialize_sockets();
  41
  42   if (opt_servers == NULL)
  43   {
  44     char *temp;
  45
  46     if ((temp= getenv("MEMCACHED_SERVERS")))
  47     {
  48       opt_servers= strdup(temp);
  49     }
  50
  51     if (opt_servers == NULL)
  52     {
  53       std::cerr << "No Servers provided" << std::endl;
  54       exit(EXIT_FAILURE);
  55     }
  56   }
  57
  58   memcached_server_st* servers= memcached_servers_parse(opt_servers);
  59   if (servers == NULL or memcached_server_list_count(servers) == 0)
  60   {
  61     std::cerr << "Invalid server list provided:" << opt_servers << std::endl;
  62     return EXIT_FAILURE;
  63   }
  64
  65   memcached_st* memc= memcached_create(NULL);
  66   process_hash_option(memc, opt_hash);
  67
  68   memcached_server_push(memc, servers);
  69   memcached_server_list_free(servers);
  70   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  71                          (uint64_t) opt_binary);
  72
  73   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  74   {
  75     memcached_free(memc);
  76     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  77     return EXIT_FAILURE;
  78   }
  79
  80   if (opt_username)
  81   {
  82     memcached_return_t ret;
  83     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
  84     {
  85       std::cerr << memcached_last_error_message(memc) << std::endl;
  86       memcached_free(memc);
  87       return EXIT_FAILURE;
  88     }
  89   }
  90
  91   int return_code= EXIT_SUCCESS;
  92
  93   while (optind < argc)
  94   {
  95     memcached_return_t rc= memcached_exist(memc, argv[optind], strlen(argv[optind]));
  96
  97     if (rc == MEMCACHED_NOTFOUND)
  98     {
  99       if (opt_verbose)
 100       {
 101         std::cout << "Could not find key \"" << argv[optind] << "\"" << std::endl;
 102       }
 103
 104       return_code= EXIT_FAILURE;
 105     }
 106     else if (memcached_failed(rc))
 107     {
 108       if (opt_verbose)
 109       {
 110         std::cerr << "Fatal error for key \"" << argv[optind] << "\" :" <<  memcached_last_error_message(memc) << std::endl;
 111       }
 112
 113       return_code= EXIT_FAILURE;
 114     }
 115     else // success
 116     {
 117       if (opt_verbose)
 118       {
 119         std::cout << "Found key " << argv[optind] << std::endl;
 120       }
 121     }
 122
 123     optind++;
 124   }
 125
 126   memcached_free(memc);
 127
 128   if (opt_servers)
 129   {
 130     free(opt_servers);
 131   }
 132
 133   if (opt_hash)
 134   {
 135     free(opt_hash);
 136   }
 137
 138   return return_code;
 139 }
 140
 141
 142 static void options_parse(int argc, char *argv[])
 143 {
 144   memcached_programs_help_st help_options[]=
 145   {
 146     {0},
 147   };
 148
 149   static struct option long_options[]=
 150   {
 151     {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 152     {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 153     {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 154     {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 155     {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 156     {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 157     {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 158     {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 159     {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 160     {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 161     {0, 0, 0, 0},
 162   };
 163
 164   bool opt_version= false;
 165   bool opt_help= false;
 166   int option_index= 0;
 167
 168   while (1)
 169   {
 170     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 171     if (option_rv == -1)
 172     {
 173       break;
 174     }
 175
 176     switch (option_rv)
 177     {
 178     case 0:
 179       break;
 180
 181     case OPT_BINARY:
 182       opt_binary = 1;
 183       break;
 184
 185     case OPT_VERBOSE: /* --verbose or -v */
 186       opt_verbose = OPT_VERBOSE;
 187       break;
 188
 189     case OPT_DEBUG: /* --debug or -d */
 190       opt_verbose = OPT_DEBUG;
 191       break;
 192
 193     case OPT_VERSION: /* --version or -V */
 194       opt_version= true;
 195       break;
 196
 197     case OPT_HELP: /* --help or -h */
 198       opt_help= true;
 199       break;
 200
 201     case OPT_SERVERS: /* --servers or -s */
 202       opt_servers= strdup(optarg);
 203       break;
 204
 205     case OPT_HASH:
 206       opt_hash= strdup(optarg);
 207       break;
 208
 209     case OPT_USERNAME:
 210       opt_username= optarg;
 211       break;
 212
 213     case OPT_PASSWD:
 214       opt_passwd= optarg;
 215       break;
 216
 217     case OPT_QUIET:
 218       close_stdio();
 219       break;
 220
 221     case '?':
 222       /* getopt_long already printed an error message. */
 223       exit(EXIT_SUCCESS);
 224
 225     default:
 226       abort();
 227     }
 228   }
 229
 230   if (opt_version)
 231   {
 232     version_command(PROGRAM_NAME);
 233     exit(EXIT_SUCCESS);
 234   }
 235
 236   if (opt_help)
 237   {
 238     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 239     exit(EXIT_SUCCESS);
 240   }
 241 }