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 <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   options_parse(argc, argv);
  42   initialize_sockets();
  43
  44   if (opt_servers == NULL)
  45   {
  46     char *temp;
  47
  48     if ((temp= getenv("MEMCACHED_SERVERS")))
  49     {
  50       opt_servers= strdup(temp);
  51     }
  52
  53     if (opt_servers == NULL)
  54     {
  55       std::cerr << "No Servers provided" << std::endl;
  56       exit(EXIT_FAILURE);
  57     }
  58   }
  59
  60   memcached_server_st* servers= memcached_servers_parse(opt_servers);
  61   if (servers == NULL or memcached_server_list_count(servers) == 0)
  62   {
  63     std::cerr << "Invalid server list provided:" << opt_servers << std::endl;
  64     return EXIT_FAILURE;
  65   }
  66
  67   memcached_st* memc= memcached_create(NULL);
  68   process_hash_option(memc, opt_hash);
  69
  70   memcached_server_push(memc, servers);
  71   memcached_server_list_free(servers);
  72   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  73                          (uint64_t) opt_binary);
  74
  75   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  76   {
  77     memcached_free(memc);
  78     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  79     return EXIT_FAILURE;
  80   }
  81
  82   if (opt_username)
  83   {
  84     memcached_return_t ret;
  85     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
  86     {
  87       std::cerr << memcached_last_error_message(memc) << std::endl;
  88       memcached_free(memc);
  89       return EXIT_FAILURE;
  90     }
  91   }
  92
  93   int return_code= EXIT_SUCCESS;
  94
  95   while (optind < argc)
  96   {
  97     memcached_return_t rc= memcached_delete(memc, argv[optind], strlen(argv[optind]), opt_expire);
  98
  99     if (rc == MEMCACHED_NOTFOUND)
 100     {
 101       if (opt_verbose)
 102       {
 103         std::cerr << "Could not find key \"" << argv[optind] << "\"" << std::endl;
 104       }
 105     }
 106     else if (memcached_fatal(rc))
 107     {
 108       if (opt_verbose)
 109       {
 110         std::cerr << "Failed to delete 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 << "Deleted key " << argv[optind];
 120         if (opt_expire)
 121         {
 122           std::cout << " expires: " << opt_expire << std::endl;
 123         }
 124         std::cout << std::endl;
 125       }
 126     }
 127
 128     optind++;
 129   }
 130
 131   memcached_free(memc);
 132
 133   if (opt_servers)
 134   {
 135     free(opt_servers);
 136   }
 137
 138   if (opt_hash)
 139   {
 140     free(opt_hash);
 141   }
 142
 143   return return_code;
 144 }
 145
 146
 147 static void options_parse(int argc, char *argv[])
 148 {
 149   memcached_programs_help_st help_options[]=
 150   {
 151     {0},
 152   };
 153
 154   static struct option long_options[]=
 155   {
 156     {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 157     {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 158     {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 159     {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 160     {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 161     {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 162     {(OPTIONSTRING)"expire", required_argument, NULL, OPT_EXPIRE},
 163     {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 164     {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 165     {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 166     {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 167     {0, 0, 0, 0},
 168   };
 169
 170   bool opt_version= false;
 171   bool opt_help= false;
 172   int option_index= 0;
 173
 174   while (1)
 175   {
 176     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 177     if (option_rv == -1)
 178     {
 179       break;
 180     }
 181
 182     switch (option_rv)
 183     {
 184     case 0:
 185       break;
 186
 187     case OPT_BINARY:
 188       opt_binary = 1;
 189       break;
 190
 191     case OPT_VERBOSE: /* --verbose or -v */
 192       opt_verbose = OPT_VERBOSE;
 193       break;
 194
 195     case OPT_DEBUG: /* --debug or -d */
 196       opt_verbose = OPT_DEBUG;
 197       break;
 198
 199     case OPT_VERSION: /* --version or -V */
 200       opt_version= true;
 201       break;
 202
 203     case OPT_HELP: /* --help or -h */
 204       opt_help= true;
 205       break;
 206
 207     case OPT_SERVERS: /* --servers or -s */
 208       opt_servers= strdup(optarg);
 209       break;
 210
 211     case OPT_EXPIRE: /* --expire */
 212       errno= 0;
 213       opt_expire= (time_t)strtoll(optarg, (char **)NULL, 10);
 214       if (errno != 0)
 215       {
 216         std::cerr << "Incorrect value passed to --expire: `" << optarg << "`" << std::endl;
 217         exit(EXIT_FAILURE);
 218       }
 219       break;
 220
 221     case OPT_HASH:
 222       opt_hash= strdup(optarg);
 223       break;
 224
 225     case OPT_USERNAME:
 226       opt_username= optarg;
 227       break;
 228
 229     case OPT_PASSWD:
 230       opt_passwd= optarg;
 231       break;
 232
 233     case OPT_QUIET:
 234       close_stdio();
 235       break;
 236
 237     case '?':
 238       /* getopt_long already printed an error message. */
 239       exit(EXIT_SUCCESS);
 240
 241     default:
 242       abort();
 243     }
 244   }
 245
 246   if (opt_version)
 247   {
 248     version_command(PROGRAM_NAME);
 249     exit(EXIT_SUCCESS);
 250   }
 251
 252   if (opt_help)
 253   {
 254     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 255     exit(EXIT_SUCCESS);
 256   }
 257 }