git.m6w6.name Git - m6w6/libmemcached/blob - clients/memrm.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 time_t opt_expire= 0;
  27 static char *opt_servers= NULL;
  28 static char *opt_hash= NULL;
  29 static char *opt_username;
  30 static char *opt_passwd;
  31
  32 #define PROGRAM_NAME "memrm"
  33 #define PROGRAM_DESCRIPTION "Erase a key or set of keys from a memcached cluster."
  34
  35 /* Prototypes */
  36 static void options_parse(int argc, char *argv[]);
  37
  38 int main(int argc, char *argv[])
  39 {
  40   memcached_st *memc;
  41   memcached_server_st *servers;
  42
  43   options_parse(argc, argv);
  44   initialize_sockets();
  45
  46   if (opt_servers == 0)
  47   {
  48     char *temp;
  49
  50     if ((temp= getenv("MEMCACHED_SERVERS")))
  51     {
  52       opt_servers= strdup(temp);
  53     }
  54     else
  55     {
  56       std::cerr << "No Servers provided" << std::endl;
  57       return EXIT_FAILURE;
  58     }
  59   }
  60
  61   memc= memcached_create(NULL);
  62   process_hash_option(memc, opt_hash);
  63
  64   servers= memcached_servers_parse(opt_servers);
  65   memcached_server_push(memc, servers);
  66   memcached_server_list_free(servers);
  67   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  68                          (uint64_t) opt_binary);
  69
  70   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  71   {
  72     memcached_free(memc);
  73     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  74     return EXIT_FAILURE;
  75   }
  76
  77   if (opt_username)
  78   {
  79     memcached_return_t ret;
  80     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
  81     {
  82       std::cerr << memcached_last_error_message(memc) << std::endl;
  83       memcached_free(memc);
  84       return EXIT_FAILURE;
  85     }
  86   }
  87
  88   int return_code= EXIT_SUCCESS;
  89
  90   while (optind < argc)
  91   {
  92     memcached_return_t rc= memcached_delete(memc, argv[optind], strlen(argv[optind]), opt_expire);
  93
  94     if (rc == MEMCACHED_NOTFOUND)
  95     {
  96       if (opt_verbose)
  97       {
  98         std::cerr << "Could not find key \"" << argv[optind] << "\"" << std::endl;
  99       }
 100     }
 101     else if (memcached_fatal(rc))
 102     {
 103       if (opt_verbose)
 104       {
 105         std::cerr << "Failed to delete 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 << "Deleted key " << argv[optind];
 115         if (opt_expire)
 116         {
 117           std::cout << " expires: " << opt_expire << std::endl;
 118         }
 119         std::cout << 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)"expire", required_argument, NULL, OPT_EXPIRE},
 158     {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 159     {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 160     {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 161     {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 162     {0, 0, 0, 0},
 163   };
 164
 165   bool opt_version= false;
 166   bool opt_help= false;
 167   int option_index= 0;
 168
 169   while (1)
 170   {
 171     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 172     if (option_rv == -1)
 173     {
 174       break;
 175     }
 176
 177     switch (option_rv)
 178     {
 179     case 0:
 180       break;
 181
 182     case OPT_BINARY:
 183       opt_binary = 1;
 184       break;
 185
 186     case OPT_VERBOSE: /* --verbose or -v */
 187       opt_verbose = OPT_VERBOSE;
 188       break;
 189
 190     case OPT_DEBUG: /* --debug or -d */
 191       opt_verbose = OPT_DEBUG;
 192       break;
 193
 194     case OPT_VERSION: /* --version or -V */
 195       opt_version= true;
 196       break;
 197
 198     case OPT_HELP: /* --help or -h */
 199       opt_help= true;
 200       break;
 201
 202     case OPT_SERVERS: /* --servers or -s */
 203       opt_servers= strdup(optarg);
 204       break;
 205
 206     case OPT_EXPIRE: /* --expire */
 207       opt_expire= (time_t)strtoll(optarg, (char **)NULL, 10);
 208       break;
 209
 210     case OPT_HASH:
 211       opt_hash= strdup(optarg);
 212       break;
 213
 214     case OPT_USERNAME:
 215       opt_username= optarg;
 216       break;
 217
 218     case OPT_PASSWD:
 219       opt_passwd= optarg;
 220       break;
 221
 222     case OPT_QUIET:
 223       close_stdio();
 224       break;
 225
 226     case '?':
 227       /* getopt_long already printed an error message. */
 228       exit(EXIT_SUCCESS);
 229
 230     default:
 231       abort();
 232     }
 233   }
 234
 235   if (opt_version)
 236   {
 237     version_command(PROGRAM_NAME);
 238     exit(EXIT_SUCCESS);
 239   }
 240
 241   if (opt_help)
 242   {
 243     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 244     exit(EXIT_SUCCESS);
 245   }
 246 }