git.m6w6.name Git - awesomized/libmemcached/blob - clients/memdump.cc

   1 /* LibMemcached
   2  * Copyright (C) 2006-2009 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary:
   9  *
  10  */
  11
  12 #include "config.h"
  13
  14 #include <cerrno>
  15 #include <cstdio>
  16 #include <cstdlib>
  17 #include <cstring>
  18 #include <fcntl.h>
  19 #include <getopt.h>
  20 #include <inttypes.h>
  21 #include <iostream>
  22 #include <sys/stat.h>
  23 #include <sys/types.h>
  24 #include <sys/types.h>
  25 #include <unistd.h>
  26
  27 #include <libmemcached/memcached.h>
  28
  29 #include "client_options.h"
  30 #include "utilities.h"
  31
  32 #define PROGRAM_NAME "memdump"
  33 #define PROGRAM_DESCRIPTION "Dump all values from one or many servers."
  34
  35 /* Prototypes */
  36 static void options_parse(int argc, char *argv[]);
  37
  38 static int opt_binary=0;
  39 static int opt_verbose= 0;
  40 static char *opt_servers= NULL;
  41 static char *opt_hash= NULL;
  42 static char *opt_username;
  43 static char *opt_passwd;
  44
  45 /* Print the keys and counter how many were found */
  46 static memcached_return_t key_printer(const memcached_st *ptr,
  47                                       const char *key, size_t key_length,
  48                                       void *context)
  49 {
  50   (void)ptr;(void)context;
  51   printf("%.*s\n", (uint32_t)key_length, key);
  52
  53   return MEMCACHED_SUCCESS;
  54 }
  55
  56 int main(int argc, char *argv[])
  57 {
  58   memcached_st *memc;
  59   memcached_return_t rc;
  60   memcached_server_st *servers;
  61   memcached_dump_fn callbacks[1];
  62
  63   callbacks[0]= &key_printer;
  64
  65   options_parse(argc, argv);
  66
  67   memc= memcached_create(NULL);
  68   process_hash_option(memc, opt_hash);
  69
  70   if (!opt_servers)
  71   {
  72     char *temp;
  73
  74     if ((temp= getenv("MEMCACHED_SERVERS")))
  75       opt_servers= strdup(temp);
  76     else
  77     {
  78       fprintf(stderr, "No Servers provided\n");
  79       exit(1);
  80     }
  81   }
  82
  83   if (opt_servers)
  84     servers= memcached_servers_parse(opt_servers);
  85   else
  86     servers= memcached_servers_parse(argv[--argc]);
  87
  88   memcached_server_push(memc, servers);
  89   memcached_server_list_free(servers);
  90   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
  91                          (uint64_t)opt_binary);
  92
  93   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
  94   {
  95     memcached_free(memc);
  96     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
  97     return EXIT_FAILURE;
  98   }
  99
 100   if (opt_username)
 101   {
 102     memcached_return_t ret;
 103     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
 104     {
 105       std::cerr << memcached_last_error_message(memc) << std::endl;
 106       memcached_free(memc);
 107       return EXIT_FAILURE;
 108     }
 109   }
 110
 111   rc= memcached_dump(memc, callbacks, NULL, 1);
 112
 113   if (rc != MEMCACHED_SUCCESS)
 114   {
 115     fprintf(stderr, "memdump: memcache error %s", memcached_strerror(memc, rc));
 116     if (memcached_last_error_errno(memc))
 117       fprintf(stderr, " system error %s", strerror(memcached_last_error_errno(memc)));
 118     fprintf(stderr, "\n");
 119   }
 120
 121   memcached_free(memc);
 122
 123   if (opt_servers)
 124     free(opt_servers);
 125   if (opt_hash)
 126     free(opt_hash);
 127
 128   return EXIT_SUCCESS;
 129 }
 130
 131 static void options_parse(int argc, char *argv[])
 132 {
 133   int option_index= 0;
 134   int option_rv;
 135
 136   static struct option long_options[]=
 137     {
 138       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 139       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 140       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 141       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 142       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 143       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 144       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 145       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 146       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 147       {0, 0, 0, 0}
 148     };
 149
 150   while (1)
 151   {
 152     option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 153
 154     if (option_rv == -1) break;
 155
 156     switch (option_rv)
 157     {
 158     case 0:
 159       break;
 160     case OPT_BINARY:
 161       opt_binary = 1;
 162       break;
 163     case OPT_VERBOSE: /* --verbose or -v */
 164       opt_verbose = OPT_VERBOSE;
 165       break;
 166     case OPT_DEBUG: /* --debug or -d */
 167       opt_verbose = OPT_DEBUG;
 168       break;
 169     case OPT_VERSION: /* --version or -V */
 170       version_command(PROGRAM_NAME);
 171       break;
 172     case OPT_HELP: /* --help or -h */
 173       help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, NULL);
 174       break;
 175     case OPT_SERVERS: /* --servers or -s */
 176       opt_servers= strdup(optarg);
 177       break;
 178     case OPT_HASH:
 179       opt_hash= strdup(optarg);
 180       break;
 181     case OPT_USERNAME:
 182        opt_username= optarg;
 183        break;
 184     case OPT_PASSWD:
 185        opt_passwd= optarg;
 186        break;
 187     case '?':
 188       /* getopt_long already printed an error message. */
 189       exit(1);
 190     default:
 191       abort();
 192     }
 193   }
 194 }