git.m6w6.name Git - awesomized/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 <cerrno>
  15 #include <cstdio>
  16 #include <cstring>
  17 #include <getopt.h>
  18 #include <iostream>
  19 #include <unistd.h>
  20
  21 #include <libmemcached-1.0/memcached.h>
  22 #include "client_options.h"
  23 #include "utilities.h"
  24
  25 static int opt_binary= 0;
  26 static int opt_verbose= 0;
  27 static time_t opt_expire= 0;
  28 static char *opt_servers= NULL;
  29 static char *opt_hash= NULL;
  30 static char *opt_username;
  31 static char *opt_passwd;
  32
  33 #define PROGRAM_NAME "memrm"
  34 #define PROGRAM_DESCRIPTION "Erase a key or set of keys from a memcached cluster."
  35
  36 /* Prototypes */
  37 static void options_parse(int argc, char *argv[]);
  38
  39 int main(int argc, char *argv[])
  40 {
  41   memcached_st *memc;
  42   memcached_server_st *servers;
  43
  44   options_parse(argc, argv);
  45   initialize_sockets();
  46
  47   if (opt_servers == 0)
  48   {
  49     char *temp;
  50
  51     if ((temp= getenv("MEMCACHED_SERVERS")))
  52     {
  53       opt_servers= strdup(temp);
  54     }
  55     else
  56     {
  57       std::cerr << "No Servers provided" << std::endl;
  58       return EXIT_FAILURE;
  59     }
  60   }
  61
  62   memc= memcached_create(NULL);
  63   process_hash_option(memc, opt_hash);
  64
  65   servers= memcached_servers_parse(opt_servers);
  66   memcached_server_push(memc, servers);
  67   memcached_server_list_free(servers);
  68   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  69                          (uint64_t) opt_binary);
  70
  71   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  72   {
  73     memcached_free(memc);
  74     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  75     return EXIT_FAILURE;
  76   }
  77
  78   if (opt_username)
  79   {
  80     memcached_return_t ret;
  81     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
  82     {
  83       std::cerr << memcached_last_error_message(memc) << std::endl;
  84       memcached_free(memc);
  85       return EXIT_FAILURE;
  86     }
  87   }
  88
  89   int return_code= EXIT_SUCCESS;
  90
  91   while (optind < argc)
  92   {
  93     memcached_return_t rc= memcached_delete(memc, argv[optind], strlen(argv[optind]), opt_expire);
  94
  95     if (rc == MEMCACHED_NOTFOUND)
  96     {
  97       if (opt_verbose)
  98       {
  99         std::cerr << "Could not find key \"" << argv[optind] << "\"" << std::endl;
 100       }
 101     }
 102     else if (memcached_fatal(rc))
 103     {
 104       if (opt_verbose)
 105       {
 106         std::cerr << "Failed to delete 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 << "Deleted key " << argv[optind];
 116         if (opt_expire)
 117         {
 118           std::cout << " expires: " << opt_expire << std::endl;
 119         }
 120         std::cout << std::endl;
 121       }
 122     }
 123
 124     optind++;
 125   }
 126
 127   memcached_free(memc);
 128
 129   if (opt_servers)
 130   {
 131     free(opt_servers);
 132   }
 133
 134   if (opt_hash)
 135   {
 136     free(opt_hash);
 137   }
 138
 139   return return_code;
 140 }
 141
 142
 143 static void options_parse(int argc, char *argv[])
 144 {
 145   memcached_programs_help_st help_options[]=
 146   {
 147     {0},
 148   };
 149
 150   static struct option long_options[]=
 151   {
 152     {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 153     {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 154     {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 155     {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 156     {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 157     {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 158     {(OPTIONSTRING)"expire", required_argument, NULL, OPT_EXPIRE},
 159     {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 160     {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 161     {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 162     {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 163     {0, 0, 0, 0},
 164   };
 165
 166   bool opt_version= false;
 167   bool opt_help= false;
 168   int option_index= 0;
 169
 170   while (1)
 171   {
 172     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 173     if (option_rv == -1)
 174     {
 175       break;
 176     }
 177
 178     switch (option_rv)
 179     {
 180     case 0:
 181       break;
 182
 183     case OPT_BINARY:
 184       opt_binary = 1;
 185       break;
 186
 187     case OPT_VERBOSE: /* --verbose or -v */
 188       opt_verbose = OPT_VERBOSE;
 189       break;
 190
 191     case OPT_DEBUG: /* --debug or -d */
 192       opt_verbose = OPT_DEBUG;
 193       break;
 194
 195     case OPT_VERSION: /* --version or -V */
 196       opt_version= true;
 197       break;
 198
 199     case OPT_HELP: /* --help or -h */
 200       opt_help= true;
 201       break;
 202
 203     case OPT_SERVERS: /* --servers or -s */
 204       opt_servers= strdup(optarg);
 205       break;
 206
 207     case OPT_EXPIRE: /* --expire */
 208       errno= 0;
 209       opt_expire= (time_t)strtoll(optarg, (char **)NULL, 10);
 210       if (errno != 0)
 211       {
 212         std::cerr << "Incorrect value passed to --expire: `" << optarg << "`" << std::cerr;
 213         exit(EXIT_FAILURE);
 214       }
 215       break;
 216
 217     case OPT_HASH:
 218       opt_hash= strdup(optarg);
 219       break;
 220
 221     case OPT_USERNAME:
 222       opt_username= optarg;
 223       break;
 224
 225     case OPT_PASSWD:
 226       opt_passwd= optarg;
 227       break;
 228
 229     case OPT_QUIET:
 230       close_stdio();
 231       break;
 232
 233     case '?':
 234       /* getopt_long already printed an error message. */
 235       exit(EXIT_SUCCESS);
 236
 237     default:
 238       abort();
 239     }
 240   }
 241
 242   if (opt_version)
 243   {
 244     version_command(PROGRAM_NAME);
 245     exit(EXIT_SUCCESS);
 246   }
 247
 248   if (opt_help)
 249   {
 250     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 251     exit(EXIT_SUCCESS);
 252   }
 253 }