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

   1 /* LibMemcached
   2  * Copyright (C) 2011-2013 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 0;
  72   }
  73
  74   if (endptr == nptr)
  75   {
  76     *error= true;
  77     return 0;
  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       std::cerr << "memcp " << argv[optind] << " " << strerror(errno) << std::endl;
 188       optind++;
 189       exit_code= EXIT_FAILURE;
 190       continue;
 191     }
 192
 193     struct stat sbuf;
 194     if (fstat(fd, &sbuf) == -1)
 195     {
 196       std::cerr << "memcp " << argv[optind] << " " << strerror(errno) << std::endl;
 197       optind++;
 198       exit_code= EXIT_FAILURE;
 199       continue;
 200     }
 201
 202     char *ptr= rindex(argv[optind], '/');
 203     if (ptr)
 204     {
 205       ptr++;
 206     }
 207     else
 208     {
 209       ptr= argv[optind];
 210     }
 211
 212     if (opt_verbose)
 213     {
 214       static const char *opstr[] = { "set", "add", "replace" };
 215       printf("op: %s\nsource file: %s\nlength: %lu\n"
 216              "key: %s\nflags: %x\nexpires: %lu\n",
 217              opstr[opt_method - OPT_SET], argv[optind], (unsigned long)sbuf.st_size,
 218              ptr, opt_flags, (unsigned long)opt_expires);
 219     }
 220
 221     // The file may be empty
 222     char *file_buffer_ptr= NULL;
 223     if (sbuf.st_size > 0)
 224     {
 225       if ((file_buffer_ptr= (char *)malloc(sizeof(char) * (size_t)sbuf.st_size)) == NULL)
 226       {
 227         std::cerr << "Error allocating file buffer(" << strerror(errno) << ")" << std::endl;
 228         close(fd);
 229         exit(EXIT_FAILURE);
 230       }
 231
 232       ssize_t read_length;
 233       if ((read_length= ::read(fd, file_buffer_ptr, (size_t)sbuf.st_size)) == -1)
 234       {
 235         std::cerr << "Error while reading file " << file_buffer_ptr << " (" << strerror(errno) << ")" << std::endl;
 236         close(fd);
 237         free(file_buffer_ptr);
 238         exit(EXIT_FAILURE);
 239       }
 240
 241       if (read_length != sbuf.st_size)
 242       {
 243         std::cerr << "Failure while reading file. Read length was not equal to stat() length" << std::endl;
 244         close(fd);
 245         free(file_buffer_ptr);
 246         exit(EXIT_FAILURE);
 247       }
 248     }
 249
 250     memcached_return_t rc;
 251     if (opt_method == OPT_ADD)
 252     {
 253       rc= memcached_add(memc, ptr, strlen(ptr),
 254                         file_buffer_ptr, (size_t)sbuf.st_size,
 255                         opt_expires, opt_flags);
 256     }
 257     else if (opt_method == OPT_REPLACE)
 258     {
 259       rc= memcached_replace(memc, ptr, strlen(ptr),
 260                             file_buffer_ptr, (size_t)sbuf.st_size,
 261                             opt_expires, opt_flags);
 262     }
 263     else
 264     {
 265       rc= memcached_set(memc, ptr, strlen(ptr),
 266                         file_buffer_ptr, (size_t)sbuf.st_size,
 267                         opt_expires, opt_flags);
 268     }
 269
 270     if (memcached_failed(rc))
 271     {
 272       std::cerr << "Error occrrured during memcached_set(): " << memcached_last_error_message(memc) << std::endl;
 273       exit_code= EXIT_FAILURE;
 274     }
 275
 276     ::free(file_buffer_ptr);
 277     ::close(fd);
 278     optind++;
 279   }
 280
 281   if (opt_verbose)
 282   {
 283     std::cout << "Calling memcached_free()" << std::endl;
 284   }
 285
 286   memcached_free(memc);
 287
 288   if (opt_servers)
 289   {
 290     free(opt_servers);
 291   }
 292
 293   if (opt_hash)
 294   {
 295     free(opt_hash);
 296   }
 297
 298   return exit_code;
 299 }
 300
 301 static void options_parse(int argc, char *argv[])
 302 {
 303   memcached_programs_help_st help_options[]=
 304   {
 305     {0},
 306   };
 307
 308   static struct option long_options[]=
 309     {
 310       {(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
 311       {(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
 312       {(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
 313       {(OPTIONSTRING)"udp", no_argument, NULL, OPT_UDP},
 314       {(OPTIONSTRING)"buffer", no_argument, NULL, OPT_BUFFER},
 315       {(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
 316       {(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
 317       {(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
 318       {(OPTIONSTRING)"flag", required_argument, NULL, OPT_FLAG},
 319       {(OPTIONSTRING)"expire", required_argument, NULL, OPT_EXPIRE},
 320       {(OPTIONSTRING)"set",  no_argument, NULL, OPT_SET},
 321       {(OPTIONSTRING)"add",  no_argument, NULL, OPT_ADD},
 322       {(OPTIONSTRING)"replace",  no_argument, NULL, OPT_REPLACE},
 323       {(OPTIONSTRING)"hash", required_argument, NULL, OPT_HASH},
 324       {(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
 325       {(OPTIONSTRING)"username", required_argument, NULL, OPT_USERNAME},
 326       {(OPTIONSTRING)"password", required_argument, NULL, OPT_PASSWD},
 327       {0, 0, 0, 0},
 328     };
 329
 330   bool opt_version= false;
 331   bool opt_help= false;
 332   int option_index= 0;
 333
 334   while (1)
 335   {
 336     int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
 337
 338     if (option_rv == -1)
 339       break;
 340
 341     switch (option_rv)
 342     {
 343     case 0:
 344       break;
 345
 346     case OPT_BINARY:
 347       opt_binary= true;
 348       break;
 349
 350     case OPT_VERBOSE: /* --verbose or -v */
 351       opt_verbose= OPT_VERBOSE;
 352       break;
 353
 354     case OPT_DEBUG: /* --debug or -d */
 355       opt_verbose= OPT_DEBUG;
 356       break;
 357
 358     case OPT_VERSION: /* --version or -V */
 359       opt_version= true;
 360       break;
 361
 362     case OPT_HELP: /* --help or -h */
 363       opt_help= true;
 364       break;
 365
 366     case OPT_SERVERS: /* --servers or -s */
 367       opt_servers= strdup(optarg);
 368       break;
 369
 370     case OPT_FLAG: /* --flag */
 371       {
 372         bool strtol_error;
 373         opt_flags= (uint32_t)strtol_wrapper(optarg, 16, &strtol_error);
 374         if (strtol_error == true)
 375         {
 376           fprintf(stderr, "Bad value passed via --flag\n");
 377           exit(1);
 378         }
 379       }
 380       break;
 381
 382     case OPT_EXPIRE: /* --expire */
 383       {
 384         bool strtol_error;
 385         opt_expires= (time_t)strtol_wrapper(optarg, 10, &strtol_error);
 386         if (strtol_error == true)
 387         {
 388           fprintf(stderr, "Bad value passed via --expire\n");
 389           exit(1);
 390         }
 391       }
 392       break;
 393
 394     case OPT_SET:
 395       opt_method= OPT_SET;
 396       break;
 397
 398     case OPT_REPLACE:
 399       opt_method= OPT_REPLACE;
 400       break;
 401
 402     case OPT_ADD:
 403       opt_method= OPT_ADD;
 404       break;
 405
 406     case OPT_HASH:
 407       opt_hash= strdup(optarg);
 408       break;
 409
 410     case OPT_USERNAME:
 411       opt_username= optarg;
 412       break;
 413
 414     case OPT_PASSWD:
 415       opt_passwd= optarg;
 416       break;
 417
 418     case OPT_QUIET:
 419       close_stdio();
 420       break;
 421
 422     case OPT_UDP:
 423       opt_udp= true;
 424       break;
 425
 426     case OPT_BUFFER:
 427       opt_buffer= true;
 428       break;
 429
 430     case '?':
 431       /* getopt_long already printed an error message. */
 432       exit(1);
 433     default:
 434       abort();
 435     }
 436   }
 437
 438   if (opt_version)
 439   {
 440     version_command(PROGRAM_NAME);
 441     exit(EXIT_SUCCESS);
 442   }
 443
 444   if (opt_help)
 445   {
 446     help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
 447     exit(EXIT_SUCCESS);
 448   }
 449 }