git.m6w6.name Git - m6w6/libmemcached/blob - clients/memdump.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
  13 #include "mem_config.h"
  14
  15 #include <cerrno>
  16 #include <cstdio>
  17 #include <cstdlib>
  18 #include <cstring>
  19 #include <fcntl.h>
  20 #include <getopt.h>
  21 #include <inttypes.h>
  22 #include <iostream>
  23 #include <sys/stat.h>
  24 #include <sys/types.h>
  25 #include <sys/types.h>
  26 #include <unistd.h>
  27
  28 #include <libmemcached-1.0/memcached.h>
  29
  30 #include "client_options.h"
  31 #include "utilities.h"
  32
  33 #define PROGRAM_NAME "memdump"
  34 #define PROGRAM_DESCRIPTION "Dump all values from one or many servers."
  35
  36 /* Prototypes */
  37 static void options_parse(int argc, char *argv[]);
  38
  39 static bool opt_binary=0;
  40 static int opt_verbose= 0;
  41 static char *opt_servers= NULL;
  42 static char *opt_hash= NULL;
  43 static char *opt_username;
  44 static char *opt_passwd;
  45
  46 /* Print the keys and counter how many were found */
  47 static memcached_return_t key_printer(const memcached_st *,
  48                                       const char *key, size_t key_length,
  49                                       void *)
  50 {
  51   std::cout.write(key, key_length);
  52   std::cout << std::endl;
  53
  54   return MEMCACHED_SUCCESS;
  55 }
  56
  57 int main(int argc, char *argv[])
  58 {
  59   memcached_dump_fn callbacks[1];
  60
  61   callbacks[0]= &key_printer;
  62
  63   options_parse(argc, argv);
  64
  65   memcached_st *memc= memcached_create(NULL);
  66   process_hash_option(memc, opt_hash);
  67
  68   if (opt_servers == NULL)
  69   {
  70     char *temp;
  71
  72     if ((temp= getenv("MEMCACHED_SERVERS")))
  73     {
  74       opt_servers= strdup(temp);
  75     }
  76     else
  77     {
  78       std::cerr << "No Servers provided" << std::endl;
  79       exit(EXIT_FAILURE);
  80     }
  81   }
  82
  83   memcached_server_st *servers;
  84   if (opt_servers)
  85   {
  86     servers= memcached_servers_parse(opt_servers);
  87   }
  88   else
  89   {
  90     servers= memcached_servers_parse(argv[--argc]);
  91   }
  92
  93   memcached_server_push(memc, servers);
  94   memcached_server_list_free(servers);
  95   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  96                          (uint64_t)opt_binary);
  97
  98   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  99   {
 100     memcached_free(memc);
 101     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
 102     return EXIT_FAILURE;
 103   }
 104
 105   if (opt_username)
 106   {
 107     memcached_return_t ret;
 108     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
 109     {
 110       std::cerr << memcached_last_error_message(memc) << std::endl;
 111       memcached_free(memc);
 112       return EXIT_FAILURE;
 113     }
 114   }
 115
 116   memcached_return_t rc= memcached_dump(memc, callbacks, NULL, 1);
 117
 118   int exit_code= EXIT_SUCCESS;
 119   if (memcached_failed(rc))
 120   {
 121     if (opt_verbose)
 122     {
 123       std::cerr << "Failed to dump keys: " << memcached_last_error_message(memc) << std::endl;
 124     }
 125     exit_code= EXIT_FAILURE;
 126   }
 127
 128   memcached_free(memc);
 129
 130   if (opt_servers)
 131   {
 132     free(opt_servers);
 133   }
 134   if (opt_hash)
 135   {
 136     free(opt_hash);
 137   }
 138
 139   return exit_code;
 140 }
 141
 142 static void options_parse(int argc, char *argv[])
 143 {
 144   static struct option long_options[]=
 145     {
 146       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 147       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 148       {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 149       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 150       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 151       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 152       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 153       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 154       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 155       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 156       {0, 0, 0, 0}
 157     };
 158
 159   int option_index= 0;
 160   bool opt_version= false;
 161   bool opt_help= false;
 162   while (1)
 163   {
 164     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 165
 166     if (option_rv == -1) break;
 167
 168     switch (option_rv)
 169     {
 170     case 0:
 171       break;
 172
 173     case OPT_BINARY:
 174       opt_binary= true;
 175       break;
 176
 177     case OPT_VERBOSE: /* --verbose or -v */
 178       opt_verbose= OPT_VERBOSE;
 179       break;
 180
 181     case OPT_DEBUG: /* --debug or -d */
 182       opt_verbose= OPT_DEBUG;
 183       break;
 184
 185     case OPT_VERSION: /* --version or -V */
 186       opt_verbose= true;
 187       break;
 188
 189     case OPT_HELP: /* --help or -h */
 190       opt_help= true;
 191       break;
 192
 193     case OPT_SERVERS: /* --servers or -s */
 194       opt_servers= strdup(optarg);
 195       break;
 196
 197     case OPT_HASH:
 198       opt_hash= strdup(optarg);
 199       break;
 200
 201     case OPT_USERNAME:
 202        opt_username= optarg;
 203        break;
 204
 205     case OPT_PASSWD:
 206        opt_passwd= optarg;
 207        break;
 208
 209     case OPT_QUIET:
 210       close_stdio();
 211       break;
 212
 213     case '?':
 214       /* getopt_long already printed an error message. */
 215       exit(1);
 216     default:
 217       abort();
 218     }
 219   }
 220
 221   if (opt_version)
 222   {
 223     version_command(PROGRAM_NAME);
 224     exit(EXIT_SUCCESS);
 225   }
 226
 227   if (opt_help)
 228   {
 229     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, NULL);
 230     exit(EXIT_SUCCESS);
 231   }
 232 }