git.m6w6.name Git - m6w6/libmemcached/blob - libmemcached/memcached_stats.c

   1 /*
   2 */
   3
   4 #include "common.h"
   5
   6 static char *memcached_stat_keys[] = {
   7   "pid",
   8   "uptime",
   9   "time",
  10   "version",
  11   "pointer_size",
  12   "rusage_user",
  13   "rusage_system",
  14   "curr_items",
  15   "total_items",
  16   "bytes",
  17   "curr_connections",
  18   "total_connections",
  19   "connection_structures",
  20   "cmd_get",
  21   "cmd_set",
  22   "get_hits",
  23   "get_misses",
  24   "evictions",
  25   "bytes_read",
  26   "bytes_written",
  27   "limit_maxbytes",
  28   "threads",
  29   NULL
  30 };
  31
  32
  33 static memcached_return set_data(memcached_stat_st *memc_stat, char *key, char *value)
  34 {
  35
  36   if(strlen(key) < 1)
  37   {
  38     WATCHPOINT_STRING(key);
  39     return MEMCACHED_UNKNOWN_STAT_KEY;
  40   }
  41   else if (!strcmp("pid", key))
  42   {
  43     memc_stat->pid= strtol(value, (char **)NULL, 10);
  44   }
  45   else if (!strcmp("uptime", key))
  46   {
  47     memc_stat->uptime= strtol(value, (char **)NULL, 10);
  48   }
  49   else if (!strcmp("time", key))
  50   {
  51     memc_stat->time= strtol(value, (char **)NULL, 10);
  52   }
  53   else if (!strcmp("version", key))
  54   {
  55     memcpy(memc_stat->version, value, strlen(value));
  56     memc_stat->version[strlen(value)]= 0;
  57   }
  58   else if (!strcmp("pointer_size", key))
  59   {
  60     memc_stat->pointer_size= strtol(value, (char **)NULL, 10);
  61   }
  62   else if (!strcmp("rusage_user", key))
  63   {
  64     char *walk_ptr;
  65     for (walk_ptr= value; (!ispunct(*walk_ptr)); walk_ptr++);
  66     *walk_ptr= 0;
  67     walk_ptr++;
  68     memc_stat->rusage_user_seconds= strtol(value, (char **)NULL, 10);
  69     memc_stat->rusage_user_microseconds= strtol(walk_ptr, (char **)NULL, 10);
  70   }
  71   else if (!strcmp("rusage_system", key))
  72   {
  73     char *walk_ptr;
  74     for (walk_ptr= value; (!ispunct(*walk_ptr)); walk_ptr++);
  75     *walk_ptr= 0;
  76     walk_ptr++;
  77     memc_stat->rusage_system_seconds= strtol(value, (char **)NULL, 10);
  78     memc_stat->rusage_system_microseconds= strtol(walk_ptr, (char **)NULL, 10);
  79   }
  80   else if (!strcmp("curr_items", key))
  81   {
  82     memc_stat->curr_items= strtol(value, (char **)NULL, 10);
  83   }
  84   else if (!strcmp("total_items", key))
  85   {
  86     memc_stat->total_items= strtol(value, (char **)NULL, 10);
  87   }
  88   else if (!strcmp("bytes_read", key))
  89   {
  90     memc_stat->bytes_read= strtoll(value, (char **)NULL, 10);
  91   }
  92   else if (!strcmp("bytes_written", key))
  93   {
  94     memc_stat->bytes_written= strtoll(value, (char **)NULL, 10);
  95   }
  96   else if (!strcmp("bytes", key))
  97   {
  98     memc_stat->bytes= strtoll(value, (char **)NULL, 10);
  99   }
 100   else if (!strcmp("curr_connections", key))
 101   {
 102     memc_stat->curr_connections= strtoll(value, (char **)NULL, 10);
 103   }
 104   else if (!strcmp("total_connections", key))
 105   {
 106     memc_stat->total_connections= strtoll(value, (char **)NULL, 10);
 107   }
 108   else if (!strcmp("connection_structures", key))
 109   {
 110     memc_stat->connection_structures= strtol(value, (char **)NULL, 10);
 111   }
 112   else if (!strcmp("cmd_get", key))
 113   {
 114     memc_stat->cmd_get= strtoll(value, (char **)NULL, 10);
 115   }
 116   else if (!strcmp("cmd_set", key))
 117   {
 118     memc_stat->cmd_set= strtoll(value, (char **)NULL, 10);
 119   }
 120   else if (!strcmp("get_hits", key))
 121   {
 122     memc_stat->get_hits= strtoll(value, (char **)NULL, 10);
 123   }
 124   else if (!strcmp("get_misses", key))
 125   {
 126     memc_stat->get_misses= (uint64_t)strtoll(value, (char **)NULL, 10);
 127   }
 128   else if (!strcmp("evictions", key))
 129   {
 130     memc_stat->evictions= (uint64_t)strtoll(value, (char **)NULL, 10);
 131   }
 132   else if (!strcmp("limit_maxbytes", key))
 133   {
 134     memc_stat->limit_maxbytes= strtoll(value, (char **)NULL, 10);
 135   }
 136   else if (!strcmp("threads", key))
 137   {
 138     memc_stat->threads= strtol(value, (char **)NULL, 10);
 139   }
 140   else if (!(strcmp("delete_misses", key) == 0 ||/* New stats in the 1.3 beta */
 141              strcmp("delete_hits", key) == 0 ||/* Just swallow them for now.. */
 142              strcmp("incr_misses", key) == 0 ||
 143              strcmp("incr_hits", key) == 0 ||
 144              strcmp("decr_misses", key) == 0 ||
 145              strcmp("decr_hits", key) == 0 ||
 146              strcmp("cas_misses", key) == 0 ||
 147              strcmp("cas_hits", key) == 0 ||
 148              strcmp("cas_badval", key) == 0 ||
 149              strcmp("cmd_flush", key) == 0 ||
 150              strcmp("accepting_conns", key) == 0 ||
 151              strcmp("listen_disabled_num", key) == 0))
 152   {
 153     WATCHPOINT_STRING(key);
 154     return MEMCACHED_UNKNOWN_STAT_KEY;
 155   }
 156
 157   return MEMCACHED_SUCCESS;
 158 }
 159
 160 char *memcached_stat_get_value(memcached_st *ptr, memcached_stat_st *memc_stat,
 161                                const char *key, memcached_return *error)
 162 {
 163   char buffer[SMALL_STRING_LEN];
 164   size_t length;
 165   char *ret;
 166
 167   *error= MEMCACHED_SUCCESS;
 168
 169   if (!memcmp("pid", key, strlen("pid")))
 170     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->pid);
 171   else if (!memcmp("uptime", key, strlen("uptime")))
 172     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->uptime);
 173   else if (!memcmp("time", key, strlen("time")))
 174     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->time);
 175   else if (!memcmp("version", key, strlen("version")))
 176     length= snprintf(buffer, SMALL_STRING_LEN,"%s", memc_stat->version);
 177   else if (!memcmp("pointer_size", key, strlen("pointer_size")))
 178     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->pointer_size);
 179   else if (!memcmp("rusage_user", key, strlen("rusage_user")))
 180     length= snprintf(buffer, SMALL_STRING_LEN,"%u.%u", memc_stat->rusage_user_seconds, memc_stat->rusage_user_microseconds);
 181   else if (!memcmp("rusage_system", key, strlen("rusage_system")))
 182     length= snprintf(buffer, SMALL_STRING_LEN,"%u.%u", memc_stat->rusage_system_seconds, memc_stat->rusage_system_microseconds);
 183   else if (!memcmp("curr_items", key, strlen("curr_items")))
 184     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->curr_items);
 185   else if (!memcmp("total_items", key, strlen("total_items")))
 186     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->total_items);
 187   else if (!memcmp("bytes", key, strlen("bytes")))
 188     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->bytes);
 189   else if (!memcmp("curr_connections", key, strlen("curr_connections")))
 190     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->curr_connections);
 191   else if (!memcmp("total_connections", key, strlen("total_connections")))
 192     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->total_connections);
 193   else if (!memcmp("connection_structures", key, strlen("connection_structures")))
 194     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->connection_structures);
 195   else if (!memcmp("cmd_get", key, strlen("cmd_get")))
 196     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->cmd_get);
 197   else if (!memcmp("cmd_set", key, strlen("cmd_set")))
 198     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->cmd_set);
 199   else if (!memcmp("get_hits", key, strlen("get_hits")))
 200     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->get_hits);
 201   else if (!memcmp("get_misses", key, strlen("get_misses")))
 202     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->get_misses);
 203   else if (!memcmp("evictions", key, strlen("evictions")))
 204     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->evictions);
 205   else if (!memcmp("bytes_read", key, strlen("bytes_read")))
 206     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->bytes_read);
 207   else if (!memcmp("bytes_written", key, strlen("bytes_written")))
 208     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->bytes_written);
 209   else if (!memcmp("limit_maxbytes", key, strlen("limit_maxbytes")))
 210     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->limit_maxbytes);
 211   else if (!memcmp("threads", key, strlen("threads")))
 212     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->threads);
 213   else
 214   {
 215     *error= MEMCACHED_NOTFOUND;
 216     return NULL;
 217   }
 218
 219   ret= ptr->call_malloc(ptr, length + 1);
 220   memcpy(ret, buffer, length);
 221   ret[length]= '\0';
 222
 223   return ret;
 224 }
 225
 226 static memcached_return binary_stats_fetch(memcached_st *ptr,
 227                                            memcached_stat_st *memc_stat,
 228                                            char *args,
 229                                            unsigned int server_key)
 230 {
 231   memcached_return rc;
 232
 233   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
 234   protocol_binary_request_stats request= {.bytes= {0}};
 235   request.message.header.request.magic= PROTOCOL_BINARY_REQ;
 236   request.message.header.request.opcode= PROTOCOL_BINARY_CMD_STAT;
 237   request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
 238
 239   if (args != NULL)
 240   {
 241     int len= strlen(args);
 242
 243     rc= memcached_validate_key_length(len, true);
 244     unlikely (rc != MEMCACHED_SUCCESS)
 245       return rc;
 246
 247     request.message.header.request.keylen= htons((uint16_t)len);
 248     request.message.header.request.bodylen= htonl(len);
 249
 250     if ((memcached_do(&ptr->hosts[server_key], request.bytes,
 251                       sizeof(request.bytes), 0) != MEMCACHED_SUCCESS) ||
 252         (memcached_io_write(&ptr->hosts[server_key], args, len, 1) == -1))
 253     {
 254       memcached_io_reset(&ptr->hosts[server_key]);
 255       return MEMCACHED_WRITE_FAILURE;
 256     }
 257   }
 258   else
 259   {
 260     if (memcached_do(&ptr->hosts[server_key], request.bytes,
 261                      sizeof(request.bytes), 1) != MEMCACHED_SUCCESS)
 262     {
 263       memcached_io_reset(&ptr->hosts[server_key]);
 264       return MEMCACHED_WRITE_FAILURE;
 265     }
 266   }
 267
 268   memcached_server_response_decrement(&ptr->hosts[server_key]);
 269   do
 270   {
 271      rc= memcached_response(&ptr->hosts[server_key], buffer,
 272                              sizeof(buffer), NULL);
 273      if (rc == MEMCACHED_END)
 274         break;
 275
 276      unlikely (rc != MEMCACHED_SUCCESS)
 277      {
 278         memcached_io_reset(&ptr->hosts[server_key]);
 279         return rc;
 280      }
 281
 282      unlikely((set_data(memc_stat, buffer, buffer + strlen(buffer) + 1)) == MEMCACHED_UNKNOWN_STAT_KEY)
 283      {
 284        WATCHPOINT_ERROR(MEMCACHED_UNKNOWN_STAT_KEY);
 285        WATCHPOINT_ASSERT(0);
 286      }
 287   } while (1);
 288
 289   /* shit... memcached_response will decrement the counter, so I need to
 290   ** reset it.. todo: look at this and try to find a better solution.
 291   */
 292   ptr->hosts[server_key].cursor_active= 0;
 293
 294   return MEMCACHED_SUCCESS;
 295 }
 296
 297 static memcached_return ascii_stats_fetch(memcached_st *ptr,
 298                                               memcached_stat_st *memc_stat,
 299                                               char *args,
 300                                               unsigned int server_key)
 301 {
 302   memcached_return rc;
 303   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
 304   size_t send_length;
 305
 306   if (args)
 307     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 308                           "stats %s\r\n", args);
 309   else
 310     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 311                           "stats\r\n");
 312
 313   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
 314     return MEMCACHED_WRITE_FAILURE;
 315
 316   rc= memcached_do(&ptr->hosts[server_key], buffer, send_length, 1);
 317   if (rc != MEMCACHED_SUCCESS)
 318       goto error;
 319
 320   while (1)
 321   {
 322     rc= memcached_response(&ptr->hosts[server_key], buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
 323
 324     if (rc == MEMCACHED_STAT)
 325     {
 326       char *string_ptr, *end_ptr;
 327       char *key, *value;
 328
 329       string_ptr= buffer;
 330       string_ptr+= 5; /* Move past STAT */
 331       for (end_ptr= string_ptr; isgraph(*end_ptr); end_ptr++);
 332       key= string_ptr;
 333       key[(size_t)(end_ptr-string_ptr)]= 0;
 334
 335       string_ptr= end_ptr + 1;
 336       for (end_ptr= string_ptr; !(isspace(*end_ptr)); end_ptr++);
 337       value= string_ptr;
 338       value[(size_t)(end_ptr-string_ptr)]= 0;
 339       string_ptr= end_ptr + 2;
 340       unlikely((set_data(memc_stat, key, value)) == MEMCACHED_UNKNOWN_STAT_KEY)
 341       {
 342         WATCHPOINT_ERROR(MEMCACHED_UNKNOWN_STAT_KEY);
 343         WATCHPOINT_ASSERT(0);
 344       }
 345     }
 346     else
 347       break;
 348   }
 349
 350 error:
 351   if (rc == MEMCACHED_END)
 352     return MEMCACHED_SUCCESS;
 353   else
 354     return rc;
 355 }
 356
 357 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return *error)
 358 {
 359   unsigned int x;
 360   memcached_return rc;
 361   memcached_stat_st *stats;
 362
 363   unlikely (ptr->flags & MEM_USE_UDP)
 364   {
 365     *error= MEMCACHED_NOT_SUPPORTED;
 366     return NULL;
 367   }
 368
 369   stats= ptr->call_calloc(ptr, ptr->number_of_hosts, sizeof(memcached_stat_st));
 370
 371   if (!stats)
 372   {
 373     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 374     return NULL;
 375   }
 376
 377   rc= MEMCACHED_SUCCESS;
 378   for (x= 0; x < ptr->number_of_hosts; x++)
 379   {
 380     memcached_return temp_return;
 381
 382     if (ptr->flags & MEM_BINARY_PROTOCOL)
 383       temp_return= binary_stats_fetch(ptr, stats + x, args, x);
 384     else
 385       temp_return= ascii_stats_fetch(ptr, stats + x, args, x);
 386
 387     if (temp_return != MEMCACHED_SUCCESS)
 388       rc= MEMCACHED_SOME_ERRORS;
 389   }
 390
 391   *error= rc;
 392   return stats;
 393 }
 394
 395 memcached_return memcached_stat_servername(memcached_stat_st *memc_stat, char *args,
 396                                            char *hostname, unsigned int port)
 397 {
 398   memcached_return rc;
 399   memcached_st memc;
 400
 401   memcached_create(&memc);
 402
 403   memcached_server_add(&memc, hostname, port);
 404
 405   if (memc.flags & MEM_BINARY_PROTOCOL)
 406     rc= binary_stats_fetch(&memc, memc_stat, args, 0);
 407   else
 408     rc= ascii_stats_fetch(&memc, memc_stat, args, 0);
 409
 410   memcached_free(&memc);
 411
 412   return rc;
 413 }
 414
 415 /*
 416   We make a copy of the keys since at some point in the not so distant future
 417   we will add support for "found" keys.
 418 */
 419 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *memc_stat,
 420                                 memcached_return *error)
 421 {
 422   (void) memc_stat;
 423   char **list;
 424   size_t length= sizeof(memcached_stat_keys);
 425
 426   list= ptr->call_malloc(ptr, length);
 427
 428   if (!list)
 429   {
 430     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 431     return NULL;
 432   }
 433
 434   memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
 435
 436   *error= MEMCACHED_SUCCESS;
 437
 438   return list;
 439 }
 440
 441 void memcached_stat_free(memcached_st *ptr, memcached_stat_st *memc_stat)
 442 {
 443   if (memc_stat == NULL)
 444   {
 445     WATCHPOINT_ASSERT(0); /* Be polite, but when debugging catch this as an error */
 446     return;
 447   }
 448
 449   if (ptr)
 450     ptr->call_free(ptr, memc_stat);
 451   else
 452     free(memc_stat);
 453 }