git.m6w6.name Git - awesomized/libmemcached/blob - clients/memcp.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 <climits>
  17 #include <cstdio>
  18 #include <cstdlib>
  19 #include <cstdlib>
  20 #include <cstring>
  21 #include <fcntl.h>
  22 #include <getopt.h>
  23 #include <iostream>
  24 #ifdef HAVE_STRINGS_H
  25 #include <strings.h>
  26 #endif
  27 #include <sys/stat.h>
  28 #include <sys/types.h>
  29 #include <sys/types.h>
  30 #include <sys/types.h>
  31 #include <unistd.h>
  32
  33
  34 #include <libmemcached-1.0/memcached.h>
  35
  36 #include "client_options.h"
  37 #include "utilities.h"
  38
  39 #define PROGRAM_NAME "memcp"
  40 #define PROGRAM_DESCRIPTION "Copy a set of files to a memcached cluster."
  41
  42 /* Prototypes */
  43 static void options_parse(int argc, char *argv[]);
  44
  45 static bool opt_binary= false;
  46 static bool opt_udp= false;
  47 static bool opt_buffer= false;
  48 static int opt_verbose= 0;
  49 static char *opt_servers= NULL;
  50 static char *opt_hash= NULL;
  51 static int opt_method= OPT_SET;
  52 static uint32_t opt_flags= 0;
  53 static time_t opt_expires= 0;
  54 static char *opt_username;
  55 static char *opt_passwd;
  56
  57 static long strtol_wrapper(const char *nptr, int base, bool *error)
  58 {
  59   long val;
  60   char *endptr;
  61
  62   errno= 0;    /* To distinguish success/failure after call */
  63   val= strtol(nptr, &endptr, base);
  64
  65   /* Check for various possible errors */
  66
  67   if ((errno == ERANGE and (val == LONG_MAX or val == LONG_MIN))
  68       or (errno != 0 && val == 0))
  69   {
  70     *error= true;
  71     return EXIT_SUCCESS;
  72   }
  73
  74   if (endptr == nptr)
  75   {
  76     *error= true;
  77     return EXIT_SUCCESS;
  78   }
  79
  80   *error= false;
  81   return val;
  82 }
  83
  84 int main(int argc, char *argv[])
  85 {
  86
  87   options_parse(argc, argv);
  88
  89   if (optind >= argc)
  90   {
  91     fprintf(stderr, "Expected argument after options\n");
  92     exit(EXIT_FAILURE);
  93   }
  94
  95   initialize_sockets();
  96
  97   memcached_st *memc= memcached_create(NULL);
  98
  99   if (opt_udp)
 100   {
 101     if (opt_verbose)
 102     {
 103       std::cout << "Enabling UDP" << std::endl;
 104     }
 105
 106     if (memcached_failed(memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_USE_UDP, opt_udp)))
 107     {
 108       memcached_free(memc);
 109       std::cerr << "Could not enable UDP protocol." << std::endl;
 110       return EXIT_FAILURE;
 111     }
 112   }
 113
 114   if (opt_buffer)
 115   {
 116     if (opt_verbose)
 117     {
 118       std::cout << "Enabling MEMCACHED_BEHAVIOR_BUFFER_REQUESTS" << std::endl;
 119     }
 120
 121     if (memcached_failed(memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BUFFER_REQUESTS, opt_buffer)))
 122     {
 123       memcached_free(memc);
 124       std::cerr << "Could not enable MEMCACHED_BEHAVIOR_BUFFER_REQUESTS." << std::endl;
 125       return EXIT_FAILURE;
 126     }
 127   }
 128
 129   process_hash_option(memc, opt_hash);
 130
 131   if (opt_servers == NULL)
 132   {
 133     char *temp;
 134
 135     if ((temp= getenv("MEMCACHED_SERVERS")))
 136     {
 137       opt_servers= strdup(temp);
 138     }
 139 #if 0
 140     else if (argc >= 1 and argv[--argc])
 141     {
 142       opt_servers= strdup(argv[argc]);
 143     }
 144 #endif
 145
 146     if (opt_servers == NULL)
 147     {
 148       std::cerr << "No Servers provided" << std::endl;
 149       exit(EXIT_FAILURE);
 150     }
 151   }
 152
 153   memcached_server_st* servers= memcached_servers_parse(opt_servers);
 154   if (servers == NULL or memcached_server_list_count(servers) == 0)
 155   {
 156     std::cerr << "Invalid server list provided:" << opt_servers << std::endl;
 157     return EXIT_FAILURE;
 158   }
 159
 160   memcached_server_push(memc, servers);
 161   memcached_server_list_free(servers);
 162   memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL, opt_binary);
 163   if (opt_username and LIBMEMCACHED_WITH_SASL_SUPPORT == 0)
 164   {
 165     memcached_free(memc);
 166     std::cerr << "--username was supplied, but binary was not built with SASL support." << std::endl;
 167     return EXIT_FAILURE;
 168   }
 169
 170   if (opt_username)
 171   {
 172     memcached_return_t ret;
 173     if (memcached_failed(ret= memcached_set_sasl_auth_data(memc, opt_username, opt_passwd)))
 174     {
 175       std::cerr << memcached_last_error_message(memc) << std::endl;
 176       memcached_free(memc);
 177       return EXIT_FAILURE;
 178     }
 179   }
 180
 181   int exit_code= EXIT_SUCCESS;
 182   while (optind < argc)
 183   {
 184     int fd= open(argv[optind], O_RDONLY);
 185     if (fd < 0)
 186     {
 187       if (opt_verbose)
 188       {
 189         std::cerr << "memcp " << argv[optind] << " " << strerror(errno) << std::endl;
 190         optind++;
 191       }
 192       exit_code= EXIT_FAILURE;
 193       continue;
 194     }
 195
 196     struct stat sbuf;
 197     (void)fstat(fd, &sbuf);
 198
 199     char *ptr= rindex(argv[optind], '/');
 200     if (ptr)
 201     {
 202       ptr++;
 203     }
 204     else
 205     {
 206       ptr= argv[optind];
 207     }
 208
 209     if (opt_verbose)
 210     {
 211       static const char *opstr[] = { "set", "add", "replace" };
 212       printf("op: %s\nsource file: %s\nlength: %lu\n"
 213              "key: %s\nflags: %x\nexpires: %lu\n",
 214              opstr[opt_method - OPT_SET], argv[optind], (unsigned long)sbuf.st_size,
 215              ptr, opt_flags, (unsigned long)opt_expires);
 216     }
 217
 218     char *file_buffer_ptr;
 219     if ((file_buffer_ptr= (char *)malloc(sizeof(char) * (size_t)sbuf.st_size)) == NULL)
 220     {
 221       std::cerr << "Error allocating file buffer(" << strerror(errno) << ")" << std::endl;
 222       close(fd);
 223       exit(EXIT_FAILURE);
 224     }
 225
 226     ssize_t read_length;
 227     if ((read_length= ::read(fd, file_buffer_ptr, (size_t)sbuf.st_size)) == -1)
 228     {
 229       std::cerr << "Error while reading file " << file_buffer_ptr << " (" << strerror(errno) << ")" << std::endl;
 230       close(fd);
 231       exit(EXIT_FAILURE);
 232     }
 233
 234     if (read_length != sbuf.st_size)
 235     {
 236       std::cerr << "Failure while reading file. Read length was not equal to stat() length" << std::endl;
 237       close(fd);
 238       exit(EXIT_FAILURE);
 239     }
 240
 241     memcached_return_t rc;
 242     if (opt_method == OPT_ADD)
 243     {
 244       rc= memcached_add(memc, ptr, strlen(ptr),
 245                         file_buffer_ptr, (size_t)sbuf.st_size,
 246                         opt_expires, opt_flags);
 247     }
 248     else if (opt_method == OPT_REPLACE)
 249     {
 250       rc= memcached_replace(memc, ptr, strlen(ptr),
 251                             file_buffer_ptr, (size_t)sbuf.st_size,
 252                             opt_expires, opt_flags);
 253     }
 254     else
 255     {
 256       rc= memcached_set(memc, ptr, strlen(ptr),
 257                         file_buffer_ptr, (size_t)sbuf.st_size,
 258                         opt_expires, opt_flags);
 259     }
 260
 261     if (memcached_failed(rc))
 262     {
 263       std::cerr << "Error occrrured during memcached_set(): " << memcached_last_error_message(memc) << std::endl;
 264       ::close(fd);
 265       exit_code= EXIT_FAILURE;
 266     }
 267
 268     ::free(file_buffer_ptr);
 269     ::close(fd);
 270     optind++;
 271   }
 272
 273   if (opt_verbose)
 274   {
 275     std::cout << "Calling memcached_free()" << std::endl;
 276   }
 277
 278   memcached_free(memc);
 279
 280   if (opt_servers)
 281   {
 282     free(opt_servers);
 283   }
 284
 285   if (opt_hash)
 286   {
 287     free(opt_hash);
 288   }
 289
 290   return exit_code;
 291 }
 292
 293 static void options_parse(int argc, char *argv[])
 294 {
 295   memcached_programs_help_st help_options[]=
 296   {
 297     {0},
 298   };
 299
 300   static struct option long_options[]=
 301     {
 302       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 303       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 304       {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 305       {(OPTIONSTRING)"udp", no_argument, NULL, OPT_UDP},
 306       {(OPTIONSTRING)"buffer", no_argument, NULL, OPT_BUFFER},
 307       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 308       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 309       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 310       {(OPTIONSTRING)"flag", required_argument, NULL, OPT_FLAG},
 311       {(OPTIONSTRING)"expire", required_argument, NULL, OPT_EXPIRE},
 312       {(OPTIONSTRING)"set",  no_argument, NULL, OPT_SET},
 313       {(OPTIONSTRING)"add",  no_argument, NULL, OPT_ADD},
 314       {(OPTIONSTRING)"replace",  no_argument, NULL, OPT_REPLACE},
 315       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 316       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 317       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 318       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 319       {0, 0, 0, 0},
 320     };
 321
 322   bool opt_version= false;
 323   bool opt_help= false;
 324   int option_index= 0;
 325
 326   while (1)
 327   {
 328     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 329
 330     if (option_rv == -1)
 331       break;
 332
 333     switch (option_rv)
 334     {
 335     case 0:
 336       break;
 337
 338     case OPT_BINARY:
 339       opt_binary= true;
 340       break;
 341
 342     case OPT_VERBOSE: /* --verbose or -v */
 343       opt_verbose= OPT_VERBOSE;
 344       break;
 345
 346     case OPT_DEBUG: /* --debug or -d */
 347       opt_verbose= OPT_DEBUG;
 348       break;
 349
 350     case OPT_VERSION: /* --version or -V */
 351       opt_version= true;
 352       break;
 353
 354     case OPT_HELP: /* --help or -h */
 355       opt_help= true;
 356       break;
 357
 358     case OPT_SERVERS: /* --servers or -s */
 359       opt_servers= strdup(optarg);
 360       break;
 361
 362     case OPT_FLAG: /* --flag */
 363       {
 364         bool strtol_error;
 365         opt_flags= (uint32_t)strtol_wrapper(optarg, 16, &strtol_error);
 366         if (strtol_error == true)
 367         {
 368           fprintf(stderr, "Bad value passed via --flag\n");
 369           exit(1);
 370         }
 371       }
 372       break;
 373
 374     case OPT_EXPIRE: /* --expire */
 375       {
 376         bool strtol_error;
 377         opt_expires= (time_t)strtol_wrapper(optarg, 16, &strtol_error);
 378         if (strtol_error == true)
 379         {
 380           fprintf(stderr, "Bad value passed via --flag\n");
 381           exit(1);
 382         }
 383       }
 384       break;
 385
 386     case OPT_SET:
 387       opt_method= OPT_SET;
 388       break;
 389
 390     case OPT_REPLACE:
 391       opt_method= OPT_REPLACE;
 392       break;
 393
 394     case OPT_ADD:
 395       opt_method= OPT_ADD;
 396       break;
 397
 398     case OPT_HASH:
 399       opt_hash= strdup(optarg);
 400       break;
 401
 402     case OPT_USERNAME:
 403       opt_username= optarg;
 404       break;
 405
 406     case OPT_PASSWD:
 407       opt_passwd= optarg;
 408       break;
 409
 410     case OPT_QUIET:
 411       close_stdio();
 412       break;
 413
 414     case OPT_UDP:
 415       opt_udp= true;
 416       break;
 417
 418     case OPT_BUFFER:
 419       opt_buffer= true;
 420       break;
 421
 422     case '?':
 423       /* getopt_long already printed an error message. */
 424       exit(1);
 425     default:
 426       abort();
 427     }
 428   }
 429
 430   if (opt_version)
 431   {
 432     version_command(PROGRAM_NAME);
 433     exit(EXIT_SUCCESS);
 434   }
 435
 436   if (opt_help)
 437   {
 438     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 439     exit(EXIT_SUCCESS);
 440   }
 441 }