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

   1 /*
   2 */
   3
   4 #include "common.h"
   5
   6 static const 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_t 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= (uint32_t) strtol(value, (char **)NULL, 10);
  44   }
  45   else if (!strcmp("uptime", key))
  46   {
  47     memc_stat->uptime= (uint32_t) strtol(value, (char **)NULL, 10);
  48   }
  49   else if (!strcmp("time", key))
  50   {
  51     memc_stat->time= (uint32_t) 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= (uint32_t) 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= (uint32_t) strtol(value, (char **)NULL, 10);
  69     memc_stat->rusage_user_microseconds= (uint32_t) 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= (uint32_t) strtol(value, (char **)NULL, 10);
  78     memc_stat->rusage_system_microseconds= (uint32_t) strtol(walk_ptr, (char **)NULL, 10);
  79   }
  80   else if (!strcmp("curr_items", key))
  81   {
  82     memc_stat->curr_items= (uint32_t) strtol(value, (char **)NULL, 10);
  83   }
  84   else if (!strcmp("total_items", key))
  85   {
  86     memc_stat->total_items= (uint32_t) strtol(value, (char **)NULL, 10);
  87   }
  88   else if (!strcmp("bytes_read", key))
  89   {
  90     memc_stat->bytes_read= (uint32_t) strtoll(value, (char **)NULL, 10);
  91   }
  92   else if (!strcmp("bytes_written", key))
  93   {
  94     memc_stat->bytes_written= (uint32_t) strtoll(value, (char **)NULL, 10);
  95   }
  96   else if (!strcmp("bytes", key))
  97   {
  98     memc_stat->bytes= (uint32_t) strtoll(value, (char **)NULL, 10);
  99   }
 100   else if (!strcmp("curr_connections", key))
 101   {
 102     memc_stat->curr_connections= (uint32_t) strtoll(value, (char **)NULL, 10);
 103   }
 104   else if (!strcmp("total_connections", key))
 105   {
 106     memc_stat->total_connections= (uint32_t) strtoll(value, (char **)NULL, 10);
 107   }
 108   else if (!strcmp("connection_structures", key))
 109   {
 110     memc_stat->connection_structures= (uint32_t) strtol(value, (char **)NULL, 10);
 111   }
 112   else if (!strcmp("cmd_get", key))
 113   {
 114     memc_stat->cmd_get= (uint64_t) strtoll(value, (char **)NULL, 10);
 115   }
 116   else if (!strcmp("cmd_set", key))
 117   {
 118     memc_stat->cmd_set= (uint64_t) strtoll(value, (char **)NULL, 10);
 119   }
 120   else if (!strcmp("get_hits", key))
 121   {
 122     memc_stat->get_hits= (uint64_t) 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= (uint64_t) strtoll(value, (char **)NULL, 10);
 135   }
 136   else if (!strcmp("threads", key))
 137   {
 138     memc_stat->threads= (uint32_t) 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              strcmp("conn_yields", key) == 0 ||
 153              strcmp("auth_cmds", key) == 0 ||
 154              strcmp("auth_errors", key) == 0 ||
 155              strcmp("reclaimed", key) == 0))
 156   {
 157     WATCHPOINT_STRING(key);
 158     return MEMCACHED_UNKNOWN_STAT_KEY;
 159   }
 160
 161   return MEMCACHED_SUCCESS;
 162 }
 163
 164 char *memcached_stat_get_value(const memcached_st *ptr, memcached_stat_st *memc_stat,
 165                                const char *key, memcached_return_t *error)
 166 {
 167   char buffer[SMALL_STRING_LEN];
 168   int length;
 169   char *ret;
 170
 171   *error= MEMCACHED_SUCCESS;
 172
 173   if (!memcmp("pid", key, strlen("pid")))
 174     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->pid);
 175   else if (!memcmp("uptime", key, strlen("uptime")))
 176     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->uptime);
 177   else if (!memcmp("time", key, strlen("time")))
 178     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->time);
 179   else if (!memcmp("version", key, strlen("version")))
 180     length= snprintf(buffer, SMALL_STRING_LEN,"%s", memc_stat->version);
 181   else if (!memcmp("pointer_size", key, strlen("pointer_size")))
 182     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->pointer_size);
 183   else if (!memcmp("rusage_user", key, strlen("rusage_user")))
 184     length= snprintf(buffer, SMALL_STRING_LEN,"%u.%u", memc_stat->rusage_user_seconds, memc_stat->rusage_user_microseconds);
 185   else if (!memcmp("rusage_system", key, strlen("rusage_system")))
 186     length= snprintf(buffer, SMALL_STRING_LEN,"%u.%u", memc_stat->rusage_system_seconds, memc_stat->rusage_system_microseconds);
 187   else if (!memcmp("curr_items", key, strlen("curr_items")))
 188     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->curr_items);
 189   else if (!memcmp("total_items", key, strlen("total_items")))
 190     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->total_items);
 191   else if (!memcmp("curr_connections", key, strlen("curr_connections")))
 192     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->curr_connections);
 193   else if (!memcmp("total_connections", key, strlen("total_connections")))
 194     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->total_connections);
 195   else if (!memcmp("connection_structures", key, strlen("connection_structures")))
 196     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->connection_structures);
 197   else if (!memcmp("cmd_get", key, strlen("cmd_get")))
 198     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->cmd_get);
 199   else if (!memcmp("cmd_set", key, strlen("cmd_set")))
 200     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->cmd_set);
 201   else if (!memcmp("get_hits", key, strlen("get_hits")))
 202     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->get_hits);
 203   else if (!memcmp("get_misses", key, strlen("get_misses")))
 204     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->get_misses);
 205   else if (!memcmp("evictions", key, strlen("evictions")))
 206     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->evictions);
 207   else if (!memcmp("bytes_read", key, strlen("bytes_read")))
 208     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->bytes_read);
 209   else if (!memcmp("bytes_written", key, strlen("bytes_written")))
 210     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->bytes_written);
 211   else if (!memcmp("bytes", key, strlen("bytes")))
 212     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->bytes);
 213   else if (!memcmp("limit_maxbytes", key, strlen("limit_maxbytes")))
 214     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->limit_maxbytes);
 215   else if (!memcmp("threads", key, strlen("threads")))
 216     length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->threads);
 217   else
 218   {
 219     *error= MEMCACHED_NOTFOUND;
 220     return NULL;
 221   }
 222
 223   ret= libmemcached_malloc(ptr, (size_t) (length + 1));
 224   memcpy(ret, buffer, (size_t) length);
 225   ret[length]= '\0';
 226
 227   return ret;
 228 }
 229
 230 static memcached_return_t binary_stats_fetch(memcached_stat_st *memc_stat,
 231                                              char *args,
 232                                              memcached_server_write_instance_st instance)
 233 {
 234   memcached_return_t rc;
 235
 236   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
 237   protocol_binary_request_stats request= {.bytes= {0}};
 238   request.message.header.request.magic= PROTOCOL_BINARY_REQ;
 239   request.message.header.request.opcode= PROTOCOL_BINARY_CMD_STAT;
 240   request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
 241
 242   if (args != NULL)
 243   {
 244     size_t len= strlen(args);
 245
 246     rc= memcached_validate_key_length(len, true);
 247     unlikely (rc != MEMCACHED_SUCCESS)
 248       return rc;
 249
 250     request.message.header.request.keylen= htons((uint16_t)len);
 251     request.message.header.request.bodylen= htonl((uint32_t) len);
 252
 253     if ((memcached_do(instance, request.bytes,
 254                       sizeof(request.bytes), false) != MEMCACHED_SUCCESS) ||
 255         (memcached_io_write(instance, args, len, true) == -1))
 256     {
 257       memcached_io_reset(instance);
 258       return MEMCACHED_WRITE_FAILURE;
 259     }
 260   }
 261   else
 262   {
 263     if (memcached_do(instance, request.bytes,
 264                      sizeof(request.bytes), true) != MEMCACHED_SUCCESS)
 265     {
 266       memcached_io_reset(instance);
 267       return MEMCACHED_WRITE_FAILURE;
 268     }
 269   }
 270
 271   memcached_server_response_decrement(instance);
 272   do
 273   {
 274     rc= memcached_response(instance, buffer,
 275                            sizeof(buffer), NULL);
 276     if (rc == MEMCACHED_END)
 277       break;
 278
 279     unlikely (rc != MEMCACHED_SUCCESS)
 280     {
 281       memcached_io_reset(instance);
 282       return rc;
 283     }
 284
 285     unlikely((set_data(memc_stat, buffer, buffer + strlen(buffer) + 1)) == MEMCACHED_UNKNOWN_STAT_KEY)
 286     {
 287       WATCHPOINT_ERROR(MEMCACHED_UNKNOWN_STAT_KEY);
 288       WATCHPOINT_ASSERT(0);
 289     }
 290   } while (1);
 291
 292   /* shit... memcached_response will decrement the counter, so I need to
 293    ** reset it.. todo: look at this and try to find a better solution.
 294  */
 295   instance->cursor_active= 0;
 296
 297   return MEMCACHED_SUCCESS;
 298 }
 299
 300 static memcached_return_t ascii_stats_fetch(memcached_stat_st *memc_stat,
 301                                             char *args,
 302                                             memcached_server_write_instance_st instance)
 303 {
 304   memcached_return_t rc;
 305   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
 306   size_t send_length;
 307
 308   if (args)
 309     send_length= (size_t) snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 310                                    "stats %s\r\n", args);
 311   else
 312     send_length= (size_t) snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 313                                    "stats\r\n");
 314
 315   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
 316     return MEMCACHED_WRITE_FAILURE;
 317
 318   rc= memcached_do(instance, buffer, send_length, true);
 319   if (rc != MEMCACHED_SUCCESS)
 320     goto error;
 321
 322   while (1)
 323   {
 324     rc= memcached_response(instance, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
 325
 326     if (rc == MEMCACHED_STAT)
 327     {
 328       char *string_ptr, *end_ptr;
 329       char *key, *value;
 330
 331       string_ptr= buffer;
 332       string_ptr+= 5; /* Move past STAT */
 333       for (end_ptr= string_ptr; isgraph(*end_ptr); end_ptr++);
 334       key= string_ptr;
 335       key[(size_t)(end_ptr-string_ptr)]= 0;
 336
 337       string_ptr= end_ptr + 1;
 338       for (end_ptr= string_ptr; !(isspace(*end_ptr)); end_ptr++);
 339       value= string_ptr;
 340       value[(size_t)(end_ptr-string_ptr)]= 0;
 341       string_ptr= end_ptr + 2;
 342       unlikely((set_data(memc_stat, key, value)) == MEMCACHED_UNKNOWN_STAT_KEY)
 343       {
 344         WATCHPOINT_ERROR(MEMCACHED_UNKNOWN_STAT_KEY);
 345         WATCHPOINT_ASSERT(0);
 346       }
 347     }
 348     else
 349       break;
 350   }
 351
 352 error:
 353   if (rc == MEMCACHED_END)
 354     return MEMCACHED_SUCCESS;
 355   else
 356     return rc;
 357 }
 358
 359 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return_t *error)
 360 {
 361   memcached_return_t rc;
 362   memcached_stat_st *stats;
 363
 364   unlikely (ptr->flags.use_udp)
 365   {
 366     *error= MEMCACHED_NOT_SUPPORTED;
 367     return NULL;
 368   }
 369
 370   stats= libmemcached_calloc(ptr, memcached_server_count(ptr), sizeof(memcached_stat_st));
 371
 372   if (! stats)
 373   {
 374     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 375     return NULL;
 376   }
 377
 378   rc= MEMCACHED_SUCCESS;
 379   for (uint32_t x= 0; x < memcached_server_count(ptr); x++)
 380   {
 381     memcached_return_t temp_return;
 382     memcached_server_write_instance_st instance;
 383     memcached_stat_st *stat_instance;
 384
 385     stat_instance= stats + x;
 386
 387     stat_instance->root= ptr;
 388
 389     instance= memcached_server_instance_fetch(ptr, x);
 390
 391     if (ptr->flags.binary_protocol)
 392     {
 393       temp_return= binary_stats_fetch(stat_instance, args, instance);
 394     }
 395     else
 396     {
 397       temp_return= ascii_stats_fetch(stat_instance, args, instance);
 398     }
 399
 400     if (temp_return != MEMCACHED_SUCCESS)
 401       rc= MEMCACHED_SOME_ERRORS;
 402   }
 403
 404   *error= rc;
 405   return stats;
 406 }
 407
 408 memcached_return_t memcached_stat_servername(memcached_stat_st *memc_stat, char *args,
 409                                              const char *hostname, in_port_t port)
 410 {
 411   memcached_return_t rc;
 412   memcached_st memc;
 413   memcached_st *memc_ptr;
 414   memcached_server_write_instance_st instance;
 415
 416   memset(memc_stat, 0, sizeof(memcached_stat_st));
 417
 418   memc_ptr= memcached_create(&memc);
 419   WATCHPOINT_ASSERT(memc_ptr);
 420
 421   memcached_server_add(&memc, hostname, port);
 422
 423   instance= memcached_server_instance_fetch(memc_ptr, 0);
 424
 425   if (memc.flags.binary_protocol)
 426   {
 427     rc= binary_stats_fetch(memc_stat, args, instance);
 428   }
 429   else
 430   {
 431     rc= ascii_stats_fetch(memc_stat, args, instance);
 432   }
 433
 434   memcached_free(&memc);
 435
 436   return rc;
 437 }
 438
 439 /*
 440   We make a copy of the keys since at some point in the not so distant future
 441   we will add support for "found" keys.
 442 */
 443 char ** memcached_stat_get_keys(const memcached_st *ptr,
 444                                 memcached_stat_st *memc_stat,
 445                                 memcached_return_t *error)
 446 {
 447   char **list;
 448   size_t length= sizeof(memcached_stat_keys);
 449
 450   (void)memc_stat;
 451
 452   list= libmemcached_malloc(ptr, length);
 453
 454   if (! list)
 455   {
 456     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 457     return NULL;
 458   }
 459
 460   memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
 461
 462   *error= MEMCACHED_SUCCESS;
 463
 464   return list;
 465 }
 466
 467 void memcached_stat_free(const memcached_st *ptr, memcached_stat_st *memc_stat)
 468 {
 469   if (memc_stat == NULL)
 470   {
 471     WATCHPOINT_ASSERT(0); /* Be polite, but when debugging catch this as an error */
 472     return;
 473   }
 474
 475   if (memc_stat->root)
 476   {
 477     libmemcached_free(memc_stat->root, memc_stat);
 478   }
 479   else if (ptr)
 480   {
 481     libmemcached_free(ptr, memc_stat);
 482   }
 483   else
 484   {
 485     free(memc_stat);
 486   }
 487 }