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