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