git.m6w6.name Git - awesomized/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 void set_data(memcached_stat_st *stat, char *key, char *value)
  34 {
  35
  36   if(strlen(key) < 1)
  37   {
  38     fprintf(stderr, "Invalid key %s\n", key);
  39   }
  40   else if (!strcmp("pid", key))
  41   {
  42     stat->pid= strtol(value, (char **)NULL, 10);
  43   }
  44   else if (!strcmp("uptime", key))
  45   {
  46     stat->uptime= strtol(value, (char **)NULL, 10);
  47   }
  48   else if (!strcmp("time", key))
  49   {
  50     stat->time= strtol(value, (char **)NULL, 10);
  51   }
  52   else if (!strcmp("version", key))
  53   {
  54     memcpy(stat->version, value, strlen(value));
  55     stat->version[strlen(value)]= 0;
  56   }
  57   else if (!strcmp("pointer_size", key))
  58   {
  59     stat->pointer_size= strtol(value, (char **)NULL, 10);
  60   }
  61   else if (!strcmp("rusage_user", key))
  62   {
  63     char *walk_ptr;
  64     for (walk_ptr= value; (!ispunct(*walk_ptr)); walk_ptr++);
  65     *walk_ptr= 0;
  66     walk_ptr++;
  67     stat->rusage_user_seconds= strtol(value, (char **)NULL, 10);
  68     stat->rusage_user_microseconds= strtol(walk_ptr, (char **)NULL, 10);
  69   }
  70   else if (!strcmp("rusage_system", key))
  71   {
  72     char *walk_ptr;
  73     for (walk_ptr= value; (!ispunct(*walk_ptr)); walk_ptr++);
  74     *walk_ptr= 0;
  75     walk_ptr++;
  76     stat->rusage_system_seconds= strtol(value, (char **)NULL, 10);
  77     stat->rusage_system_microseconds= strtol(walk_ptr, (char **)NULL, 10);
  78   }
  79   else if (!strcmp("curr_items", key))
  80   {
  81     stat->curr_items= strtol(value, (char **)NULL, 10);
  82   }
  83   else if (!strcmp("total_items", key))
  84   {
  85     stat->total_items= strtol(value, (char **)NULL, 10);
  86   }
  87   else if (!strcmp("bytes_read", key))
  88   {
  89     stat->bytes_read= strtoll(value, (char **)NULL, 10);
  90   }
  91   else if (!strcmp("bytes_written", key))
  92   {
  93     stat->bytes_written= strtoll(value, (char **)NULL, 10);
  94   }
  95   else if (!strcmp("bytes", key))
  96   {
  97     stat->bytes= strtoll(value, (char **)NULL, 10);
  98   }
  99   else if (!strcmp("curr_connections", key))
 100   {
 101     stat->curr_connections= strtoll(value, (char **)NULL, 10);
 102   }
 103   else if (!strcmp("total_connections", key))
 104   {
 105     stat->total_connections= strtoll(value, (char **)NULL, 10);
 106   }
 107   else if (!strcmp("connection_structures", key))
 108   {
 109     stat->connection_structures= strtol(value, (char **)NULL, 10);
 110   }
 111   else if (!strcmp("cmd_get", key))
 112   {
 113     stat->cmd_get= strtoll(value, (char **)NULL, 10);
 114   }
 115   else if (!strcmp("cmd_set", key))
 116   {
 117     stat->cmd_set= strtoll(value, (char **)NULL, 10);
 118   }
 119   else if (!strcmp("get_hits", key))
 120   {
 121     stat->get_hits= strtoll(value, (char **)NULL, 10);
 122   }
 123   else if (!strcmp("get_misses", key))
 124   {
 125     stat->get_misses= (uint64_t)strtoll(value, (char **)NULL, 10);
 126   }
 127   else if (!strcmp("evictions", key))
 128   {
 129     stat->evictions= (uint64_t)strtoll(value, (char **)NULL, 10);
 130   }
 131   else if (!strcmp("limit_maxbytes", key))
 132   {
 133     stat->limit_maxbytes= strtoll(value, (char **)NULL, 10);
 134   }
 135   else if (!strcmp("threads", key))
 136   {
 137     stat->threads= strtol(value, (char **)NULL, 10);
 138   }
 139   else
 140   {
 141     fprintf(stderr, "Unknown key %s\n", key);
 142   }
 143 }
 144
 145 char *memcached_stat_get_value(memcached_st *ptr, memcached_stat_st *stat,
 146                                const char *key, memcached_return *error)
 147 {
 148   char buffer[SMALL_STRING_LEN];
 149   size_t length;
 150   char *ret;
 151
 152   *error= MEMCACHED_SUCCESS;
 153
 154   if (!memcmp("pid", key, strlen("pid")))
 155     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->pid);
 156   else if (!memcmp("uptime", key, strlen("uptime")))
 157     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->uptime);
 158   else if (!memcmp("time", key, strlen("time")))
 159     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->time);
 160   else if (!memcmp("version", key, strlen("version")))
 161     length= snprintf(buffer, SMALL_STRING_LEN,"%s", stat->version);
 162   else if (!memcmp("pointer_size", key, strlen("pointer_size")))
 163     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->pointer_size);
 164   else if (!memcmp("rusage_user", key, strlen("rusage_user")))
 165     length= snprintf(buffer, SMALL_STRING_LEN,"%u.%u", stat->rusage_user_seconds, stat->rusage_user_microseconds);
 166   else if (!memcmp("rusage_system", key, strlen("rusage_system")))
 167     length= snprintf(buffer, SMALL_STRING_LEN,"%u.%u", stat->rusage_system_seconds, stat->rusage_system_microseconds);
 168   else if (!memcmp("curr_items", key, strlen("curr_items")))
 169     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->curr_items);
 170   else if (!memcmp("total_items", key, strlen("total_items")))
 171     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->total_items);
 172   else if (!memcmp("bytes", key, strlen("bytes")))
 173     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->bytes);
 174   else if (!memcmp("curr_connections", key, strlen("curr_connections")))
 175     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->curr_connections);
 176   else if (!memcmp("total_connections", key, strlen("total_connections")))
 177     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->total_connections);
 178   else if (!memcmp("connection_structures", key, strlen("connection_structures")))
 179     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->connection_structures);
 180   else if (!memcmp("cmd_get", key, strlen("cmd_get")))
 181     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->cmd_get);
 182   else if (!memcmp("cmd_set", key, strlen("cmd_set")))
 183     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->cmd_set);
 184   else if (!memcmp("get_hits", key, strlen("get_hits")))
 185     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->get_hits);
 186   else if (!memcmp("get_misses", key, strlen("get_misses")))
 187     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->get_misses);
 188   else if (!memcmp("evictions", key, strlen("evictions")))
 189     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->evictions);
 190   else if (!memcmp("bytes_read", key, strlen("bytes_read")))
 191     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->bytes_read);
 192   else if (!memcmp("bytes_written", key, strlen("bytes_written")))
 193     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->bytes_written);
 194   else if (!memcmp("limit_maxbytes", key, strlen("limit_maxbytes")))
 195     length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->limit_maxbytes);
 196   else if (!memcmp("threads", key, strlen("threads")))
 197     length= snprintf(buffer, SMALL_STRING_LEN,"%u", stat->threads);
 198   else
 199   {
 200     *error= MEMCACHED_NOTFOUND;
 201     return NULL;
 202   }
 203
 204   if (ptr->call_malloc)
 205     ret= ptr->call_malloc(ptr, length + 1);
 206   else
 207     ret= malloc(length + 1);
 208   memcpy(ret, buffer, length);
 209   ret[length]= '\0';
 210
 211   return ret;
 212 }
 213
 214 static memcached_return binary_stats_fetch(memcached_st *ptr,
 215                                            memcached_stat_st *stat,
 216                                            char *args,
 217                                            unsigned int server_key)
 218 {
 219   memcached_return rc;
 220
 221   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
 222   protocol_binary_request_stats request= {.bytes= {0}};
 223   request.message.header.request.magic= PROTOCOL_BINARY_REQ;
 224   request.message.header.request.opcode= PROTOCOL_BINARY_CMD_STAT;
 225   request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
 226
 227   if (args != NULL)
 228   {
 229     int len= strlen(args);
 230
 231     rc= memcached_validate_key_length(len, true);
 232     unlikely (rc != MEMCACHED_SUCCESS)
 233       return rc;
 234
 235     request.message.header.request.keylen= htons((uint16_t)len);
 236     request.message.header.request.bodylen= htonl(len);
 237
 238     if ((memcached_do(&ptr->hosts[server_key], request.bytes,
 239                       sizeof(request.bytes), 0) != MEMCACHED_SUCCESS) ||
 240         (memcached_io_write(&ptr->hosts[server_key], args, len, 1) == -1))
 241     {
 242       memcached_io_reset(&ptr->hosts[server_key]);
 243       return MEMCACHED_WRITE_FAILURE;
 244     }
 245   }
 246   else
 247   {
 248     if (memcached_do(&ptr->hosts[server_key], request.bytes,
 249                      sizeof(request.bytes), 1) != MEMCACHED_SUCCESS)
 250     {
 251       memcached_io_reset(&ptr->hosts[server_key]);
 252       return MEMCACHED_WRITE_FAILURE;
 253     }
 254   }
 255
 256   memcached_server_response_decrement(&ptr->hosts[server_key]);
 257   do
 258   {
 259      rc= memcached_response(&ptr->hosts[server_key], buffer,
 260                              sizeof(buffer), NULL);
 261      if (rc == MEMCACHED_END)
 262         break;
 263
 264      unlikely (rc != MEMCACHED_SUCCESS)
 265      {
 266         memcached_io_reset(&ptr->hosts[server_key]);
 267         return rc;
 268      }
 269
 270      set_data(stat, buffer, buffer + strlen(buffer) + 1);
 271   } while (1);
 272
 273   /* shit... memcached_response will decrement the counter, so I need to
 274   ** reset it.. todo: look at this and try to find a better solution.
 275   */
 276   ptr->hosts[server_key].cursor_active= 0;
 277
 278   return MEMCACHED_SUCCESS;
 279 }
 280
 281 static memcached_return ascii_stats_fetch(memcached_st *ptr,
 282                                               memcached_stat_st *stat,
 283                                               char *args,
 284                                               unsigned int server_key)
 285 {
 286   memcached_return rc;
 287   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
 288   size_t send_length;
 289
 290   if (args)
 291     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 292                           "stats %s\r\n", args);
 293   else
 294     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 295                           "stats\r\n");
 296
 297   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
 298     return MEMCACHED_WRITE_FAILURE;
 299
 300   rc= memcached_do(&ptr->hosts[server_key], buffer, send_length, 1);
 301   if (rc != MEMCACHED_SUCCESS)
 302       goto error;
 303
 304   while (1)
 305   {
 306     rc= memcached_response(&ptr->hosts[server_key], buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
 307
 308     if (rc == MEMCACHED_STAT)
 309     {
 310       char *string_ptr, *end_ptr;
 311       char *key, *value;
 312
 313       string_ptr= buffer;
 314       string_ptr+= 5; /* Move past STAT */
 315       for (end_ptr= string_ptr; isgraph(*end_ptr); end_ptr++);
 316       key= string_ptr;
 317       key[(size_t)(end_ptr-string_ptr)]= 0;
 318
 319       string_ptr= end_ptr + 1;
 320       for (end_ptr= string_ptr; !(isspace(*end_ptr)); end_ptr++);
 321       value= string_ptr;
 322       value[(size_t)(end_ptr-string_ptr)]= 0;
 323       string_ptr= end_ptr + 2;
 324       set_data(stat, key, value);
 325     }
 326     else
 327       break;
 328   }
 329
 330 error:
 331   if (rc == MEMCACHED_END)
 332     return MEMCACHED_SUCCESS;
 333   else
 334     return rc;
 335 }
 336
 337 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return *error)
 338 {
 339   unsigned int x;
 340   memcached_return rc;
 341   memcached_stat_st *stats;
 342
 343   if (ptr->flags & MEM_USE_UDP)
 344   {
 345     *error= MEMCACHED_NOT_SUPPORTED;
 346     return NULL;
 347   }
 348
 349   if (ptr->call_malloc)
 350     stats= (memcached_stat_st *)ptr->call_malloc(ptr, sizeof(memcached_stat_st)*(ptr->number_of_hosts));
 351   else
 352     stats= (memcached_stat_st *)malloc(sizeof(memcached_stat_st)*(ptr->number_of_hosts));
 353
 354   if (!stats)
 355   {
 356     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 357     return NULL;
 358   }
 359   memset(stats, 0, sizeof(memcached_stat_st)*(ptr->number_of_hosts));
 360
 361   rc= MEMCACHED_SUCCESS;
 362   for (x= 0; x < ptr->number_of_hosts; x++)
 363   {
 364     memcached_return temp_return;
 365
 366     if (ptr->flags & MEM_BINARY_PROTOCOL)
 367       temp_return= binary_stats_fetch(ptr, stats + x, args, x);
 368     else
 369       temp_return= ascii_stats_fetch(ptr, stats + x, args, x);
 370
 371     if (temp_return != MEMCACHED_SUCCESS)
 372       rc= MEMCACHED_SOME_ERRORS;
 373   }
 374
 375   *error= rc;
 376   return stats;
 377 }
 378
 379 memcached_return memcached_stat_servername(memcached_stat_st *stat, char *args,
 380                                            char *hostname, unsigned int port)
 381 {
 382   memcached_return rc;
 383   memcached_st memc;
 384
 385   memcached_create(&memc);
 386
 387   memcached_server_add(&memc, hostname, port);
 388
 389   if (memc.flags & MEM_BINARY_PROTOCOL)
 390     rc= binary_stats_fetch(&memc, stat, args, 0);
 391   else
 392     rc= ascii_stats_fetch(&memc, stat, args, 0);
 393
 394   memcached_free(&memc);
 395
 396   return rc;
 397 }
 398
 399 /*
 400   We make a copy of the keys since at some point in the not so distant future
 401   we will add support for "found" keys.
 402 */
 403 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *stat __attribute__((unused)),
 404                                 memcached_return *error)
 405 {
 406   char **list;
 407   size_t length= sizeof(memcached_stat_keys);
 408
 409   if (ptr->call_malloc)
 410     list= (char **)ptr->call_malloc(ptr, length);
 411   else
 412     list= (char **)malloc(length);
 413
 414   if (!list)
 415   {
 416     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 417     return NULL;
 418   }
 419   memset(list, 0, sizeof(memcached_stat_keys));
 420
 421   memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
 422
 423   *error= MEMCACHED_SUCCESS;
 424
 425   return list;
 426 }
 427
 428 void memcached_stat_free(memcached_st *ptr, memcached_stat_st *stat)
 429 {
 430   if (stat == NULL)
 431   {
 432     WATCHPOINT_ASSERT(0); /* Be polite, but when debugging catch this as an error */
 433     return;
 434   }
 435
 436   if (ptr && ptr->call_free)
 437     ptr->call_free(ptr, stat);
 438   else
 439     free(stat);
 440 }