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   memcached_st *memc;
  40   memcached_server_st *servers;
  41
  42   options_parse(argc, argv);
  43   initialize_sockets();
  44
  45   if (opt_servers == 0)
  46   {
  47     char *temp;
  48
  49     if ((temp= getenv("MEMCACHED_SERVERS")))
  50     {
  51       opt_servers= strdup(temp);
  52     }
  53     else
  54     {
  55       std::cerr << "No Servers provided" << std::endl;
  56       return EXIT_FAILURE;
  57     }
  58   }
  59
  60   memc= memcached_create(NULL);
  61   process_hash_option(memc, opt_hash);
  62
  63   servers= memcached_servers_parse(opt_servers);
  64   memcached_server_push(memc, servers);
  65   memcached_server_list_free(servers);
  66   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  67                          (uint64_t) opt_binary);
  68
  69   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  70   {
  71     memcached_free(memc);
  72     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  73     return EXIT_FAILURE;
  74   }
  75
  76   if (opt_username)
  77   {
  78     memcached_return_t ret;
  79     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
  80     {
  81       std::cerr << memcached_last_error_message(memc) << std::endl;
  82       memcached_free(memc);
  83       return EXIT_FAILURE;
  84     }
  85   }
  86
  87   int return_code= EXIT_SUCCESS;
  88
  89   while (optind < argc)
  90   {
  91     memcached_return_t rc= memcached_exist(memc, argv[optind], strlen(argv[optind]));
  92
  93     if (rc == MEMCACHED_NOTFOUND)
  94     {
  95       if (opt_verbose)
  96       {
  97         std::cout << "Could not find key \"" << argv[optind] << "\"" << std::endl;
  98       }
  99
 100       return_code= EXIT_FAILURE;
 101     }
 102     else if (memcached_failed(rc))
 103     {
 104       if (opt_verbose)
 105       {
 106         std::cerr << "Fatal error for key \"" << argv[optind] << "\" :" <<  memcached_last_error_message(memc) << std::endl;
 107       }
 108
 109       return_code= EXIT_FAILURE;
 110     }
 111     else // success
 112     {
 113       if (opt_verbose)
 114       {
 115         std::cout << "Found key " << argv[optind] << std::endl;
 116       }
 117     }
 118
 119     optind++;
 120   }
 121
 122   memcached_free(memc);
 123
 124   if (opt_servers)
 125   {
 126     free(opt_servers);
 127   }
 128
 129   if (opt_hash)
 130   {
 131     free(opt_hash);
 132   }
 133
 134   return return_code;
 135 }
 136
 137
 138 static void options_parse(int argc, char *argv[])
 139 {
 140   memcached_programs_help_st help_options[]=
 141   {
 142     {0},
 143   };
 144
 145   static struct option long_options[]=
 146   {
 147     {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 148     {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 149     {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 150     {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 151     {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 152     {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 153     {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 154     {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 155     {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 156     {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 157     {0, 0, 0, 0},
 158   };
 159
 160   bool opt_version= false;
 161   bool opt_help= false;
 162   int option_index= 0;
 163
 164   while (1)
 165   {
 166     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 167     if (option_rv == -1)
 168     {
 169       break;
 170     }
 171
 172     switch (option_rv)
 173     {
 174     case 0:
 175       break;
 176
 177     case OPT_BINARY:
 178       opt_binary = 1;
 179       break;
 180
 181     case OPT_VERBOSE: /* --verbose or -v */
 182       opt_verbose = OPT_VERBOSE;
 183       break;
 184
 185     case OPT_DEBUG: /* --debug or -d */
 186       opt_verbose = OPT_DEBUG;
 187       break;
 188
 189     case OPT_VERSION: /* --version or -V */
 190       opt_version= true;
 191       break;
 192
 193     case OPT_HELP: /* --help or -h */
 194       opt_help= true;
 195       break;
 196
 197     case OPT_SERVERS: /* --servers or -s */
 198       opt_servers= strdup(optarg);
 199       break;
 200
 201     case OPT_HASH:
 202       opt_hash= strdup(optarg);
 203       break;
 204
 205     case OPT_USERNAME:
 206       opt_username= optarg;
 207       break;
 208
 209     case OPT_PASSWD:
 210       opt_passwd= optarg;
 211       break;
 212
 213     case OPT_QUIET:
 214       close_stdio();
 215       break;
 216
 217     case '?':
 218       /* getopt_long already printed an error message. */
 219       exit(EXIT_SUCCESS);
 220
 221     default:
 222       abort();
 223     }
 224   }
 225
 226   if (opt_version)
 227   {
 228     version_command(PROGRAM_NAME);
 229     exit(EXIT_SUCCESS);
 230   }
 231
 232   if (opt_help)
 233   {
 234     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 235     exit(EXIT_SUCCESS);
 236   }
 237 }