git.m6w6.name Git - awesomized/libmemcached/blob - lib/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   "rusage_user_seconds",
  15   "rusage_user_microseconds",
  16   "rusage_system_seconds",
  17   "rusage_system_microseconds",
  18   "curr_items",
  19   "total_items",
  20   "bytes",
  21   "curr_connections",
  22   "total_connections",
  23   "connection_structures",
  24   "cmd_get",
  25   "cmd_set",
  26   "get_hits",
  27   "get_misses",
  28   "evictions",
  29   "bytes_read",
  30   "bytes_written",
  31   "limit_maxbytes",
  32   "threads",
  33   NULL
  34 };
  35
  36
  37 static void set_data(memcached_stat_st *stat, char *key, char *value)
  38 {
  39   if (!memcmp("pid", key, strlen("pid")))
  40   {
  41     stat->pid= strtol(value, (char **)NULL, 10);
  42   }
  43   else if (!memcmp("uptime", key, strlen("uptime")))
  44   {
  45     stat->uptime= strtol(value, (char **)NULL, 10);
  46   }
  47   else if (!memcmp("time", key, strlen("time")))
  48   {
  49     stat->time= strtoll(value, (char **)NULL, 10);
  50   }
  51   else if (!memcmp("version", key, strlen("version")))
  52   {
  53     memcpy(stat->version, value, 8);
  54   }
  55   else if (!memcmp("pointer_size", key, strlen("pointer_size")))
  56   {
  57     stat->pointer_size= strtoll(value, (char **)NULL, 10);
  58   }
  59   else if (!memcmp("rusage_user", key, strlen("rusage_user")))
  60   {
  61     stat->rusage_user= strtoll(value, (char **)NULL, 10);
  62   }
  63   else if (!memcmp("rusage_system", key, strlen("rusage_system")))
  64   {
  65     stat->rusage_system= strtoll(value, (char **)NULL, 10);
  66   }
  67   else if (!memcmp("rusage_user_seconds", key, strlen("rusage_user_seconds")))
  68   {
  69     stat->rusage_user_seconds= strtoll(value, (char **)NULL, 10);
  70   }
  71   else if (!memcmp("rusage_user_microseconds", key, strlen("rusage_user_microseconds")))
  72   {
  73     stat->rusage_user_microseconds= strtoll(value, (char **)NULL, 10);
  74   }
  75   else if (!memcmp("rusage_system_seconds", key, strlen("rusage_system_seconds")))
  76   {
  77     stat->rusage_system_seconds= strtoll(value, (char **)NULL, 10);
  78   }
  79   else if (!memcmp("rusage_system_microseconds", key, strlen("rusage_system_microseconds")))
  80   {
  81     stat->rusage_system_microseconds= strtoll(value, (char **)NULL, 10);
  82   }
  83   else if (!memcmp("curr_items", key, strlen("curr_items")))
  84   {
  85     stat->curr_items= strtoll(value, (char **)NULL, 10);
  86   }
  87   else if (!memcmp("total_items", key, strlen("total_items")))
  88   {
  89     stat->total_items= strtoll(value, (char **)NULL, 10);
  90   }
  91   else if (!memcmp("bytes", key, strlen("bytes")))
  92   {
  93     stat->bytes= strtoll(value, (char **)NULL, 10);
  94   }
  95   else if (!memcmp("curr_connections", key, strlen("curr_connections")))
  96   {
  97     stat->curr_connections= strtoll(value, (char **)NULL, 10);
  98   }
  99   else if (!memcmp("total_connections", key, strlen("total_connections")))
 100   {
 101     stat->total_connections= strtoll(value, (char **)NULL, 10);
 102   }
 103   else if (!memcmp("connection_structures", key, strlen("connection_structures")))
 104   {
 105     stat->connection_structures= strtoll(value, (char **)NULL, 10);
 106   }
 107   else if (!memcmp("cmd_get", key, strlen("cmd_get")))
 108   {
 109     stat->cmd_get= strtoll(value, (char **)NULL, 10);
 110   }
 111   else if (!memcmp("cmd_set", key, strlen("cmd_set")))
 112   {
 113     stat->cmd_set= strtoll(value, (char **)NULL, 10);
 114   }
 115   else if (!memcmp("get_hits", key, strlen("get_hits")))
 116   {
 117     stat->get_hits= strtoll(value, (char **)NULL, 10);
 118   }
 119   else if (!memcmp("get_misses", key, strlen("get_misses")))
 120   {
 121     stat->get_misses= strtoll(value, (char **)NULL, 10);
 122   }
 123   else if (!memcmp("evictions", key, strlen("evictions")))
 124   {
 125     stat->evictions= strtoll(value, (char **)NULL, 10);
 126   }
 127   else if (!memcmp("bytes_read", key, strlen("bytes_read")))
 128   {
 129     stat->bytes_read= strtoll(value, (char **)NULL, 10);
 130   }
 131   else if (!memcmp("bytes_written", key, strlen("bytes_written")))
 132   {
 133     stat->bytes_written= strtoll(value, (char **)NULL, 10);
 134   }
 135   else if (!memcmp("limit_maxbytes", key, strlen("limit_maxbytes")))
 136   {
 137     stat->limit_maxbytes= strtoll(value, (char **)NULL, 10);
 138   }
 139   else if (!memcmp("threads", key, strlen("threads")))
 140   {
 141     stat->threads= strtol(key, (char **)NULL, 10);
 142   }
 143   else
 144   {
 145     fprintf(stderr, "Unknown key %s\n", key);
 146   }
 147 }
 148
 149 char *memcached_stat_get_value(memcached_st *ptr, memcached_stat_st *stat,
 150                                char *key, memcached_return *error)
 151 {
 152   char buffer[SMALL_STRING_LEN];
 153   *error= MEMCACHED_SUCCESS;
 154
 155
 156   memset(buffer, 0, SMALL_STRING_LEN);
 157
 158   if (!memcmp("pid", key, strlen("pid")))
 159     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->pid);
 160   else if (!memcmp("uptime", key, strlen("uptime")))
 161     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->uptime);
 162   else if (!memcmp("time", key, strlen("time")))
 163     snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->time);
 164   else if (!memcmp("version", key, strlen("version")))
 165     snprintf(buffer, SMALL_STRING_LEN,"%s", stat->version);
 166   else if (!memcmp("pointer_size", key, strlen("pointer_size")))
 167     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->pointer_size);
 168   else if (!memcmp("rusage_user", key, strlen("rusage_user")))
 169     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_user);
 170   else if (!memcmp("rusage_system", key, strlen("rusage_system")))
 171     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_system);
 172   else if (!memcmp("rusage_user_seconds", key, strlen("rusage_user_seconds")))
 173     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_user_seconds);
 174   else if (!memcmp("rusage_user_microseconds", key, strlen("rusage_user_microseconds")))
 175     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_user_microseconds);
 176   else if (!memcmp("rusage_system_seconds", key, strlen("rusage_system_seconds")))
 177     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_system_seconds);
 178   else if (!memcmp("rusage_system_microseconds", key, strlen("rusage_system_microseconds")))
 179     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_system_microseconds);
 180   else if (!memcmp("curr_items", key, strlen("curr_items")))
 181     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->curr_items);
 182   else if (!memcmp("total_items", key, strlen("total_items")))
 183     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->total_items);
 184   else if (!memcmp("bytes", key, strlen("bytes")))
 185     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->bytes);
 186   else if (!memcmp("curr_connections", key, strlen("curr_connections")))
 187     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->curr_connections);
 188   else if (!memcmp("total_connections", key, strlen("total_connections")))
 189     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->total_connections);
 190   else if (!memcmp("connection_structures", key, strlen("connection_structures")))
 191     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->connection_structures);
 192   else if (!memcmp("cmd_get", key, strlen("cmd_get")))
 193     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->cmd_get);
 194   else if (!memcmp("cmd_set", key, strlen("cmd_set")))
 195     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->cmd_set);
 196   else if (!memcmp("get_hits", key, strlen("get_hits")))
 197     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->get_hits);
 198   else if (!memcmp("get_misses", key, strlen("get_misses")))
 199     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->get_misses);
 200   else if (!memcmp("evictions", key, strlen("evictions")))
 201     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->evictions);
 202   else if (!memcmp("bytes_read", key, strlen("bytes_read")))
 203     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->bytes_read);
 204   else if (!memcmp("bytes_written", key, strlen("bytes_written")))
 205     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->bytes_written);
 206   else if (!memcmp("limit_maxbytes", key, strlen("limit_maxbytes")))
 207     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->limit_maxbytes);
 208   else if (!memcmp("threads", key, strlen("threads")))
 209     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->threads);
 210   else
 211   {
 212     *error= MEMCACHED_NOTFOUND;
 213     return NULL;
 214   }
 215
 216   return strdup(buffer);
 217 }
 218
 219 static memcached_return memcached_stats_fetch(memcached_st *ptr,
 220                                               memcached_stat_st *stat,
 221                                               char *args,
 222                                               unsigned int server_key)
 223 {
 224   memcached_return rc;
 225   char buffer[HUGE_STRING_LEN];
 226   size_t send_length, sent_length;
 227
 228   rc= memcached_connect(ptr);
 229
 230   if (rc != MEMCACHED_SUCCESS)
 231     return rc;
 232
 233   if (args)
 234     send_length= snprintf(buffer, HUGE_STRING_LEN,
 235                           "stats %s\r\n", args);
 236   else
 237     send_length= snprintf(buffer, HUGE_STRING_LEN,
 238                           "stats\r\n");
 239
 240   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
 241     return MEMCACHED_WRITE_FAILURE;
 242
 243   sent_length= send(ptr->hosts[server_key].fd, buffer, send_length, 0);
 244
 245   if (sent_length == -1 || sent_length != send_length)
 246     return MEMCACHED_WRITE_FAILURE;
 247
 248   rc= memcached_response(ptr, buffer, HUGE_STRING_LEN, 0);
 249
 250   if (rc == MEMCACHED_SUCCESS)
 251   {
 252     char *string_ptr, *end_ptr;
 253     char *key, *value;
 254
 255     string_ptr= buffer;
 256     while (1)
 257     {
 258       if (memcmp(string_ptr, "STAT ", 5))
 259         break;
 260       string_ptr+= 5;
 261       for (end_ptr= string_ptr; *end_ptr != ' '; end_ptr++);
 262       key= string_ptr;
 263       key[(size_t)(end_ptr-string_ptr)]= 0;
 264
 265       string_ptr= end_ptr + 1;
 266       for (end_ptr= string_ptr; *end_ptr != '\r'; end_ptr++);
 267       value= string_ptr;
 268       value[(size_t)(end_ptr-string_ptr)]= 0;
 269       string_ptr= end_ptr + 2;
 270       set_data(stat, key, value);
 271     }
 272   }
 273
 274   return rc;
 275 }
 276
 277 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return *error)
 278 {
 279   unsigned int x;
 280   memcached_return rc;
 281   memcached_stat_st *stats;
 282
 283   rc= memcached_connect(ptr);
 284   if (rc != MEMCACHED_SUCCESS)
 285   {
 286     *error= rc;
 287     return NULL;
 288   }
 289
 290   stats= (memcached_stat_st *)malloc(sizeof(memcached_st)*(ptr->number_of_hosts+1));
 291   if (!stats)
 292   {
 293     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 294     free(stats);
 295     return NULL;
 296   }
 297   memset(stats, 0, sizeof(memcached_st)*(ptr->number_of_hosts+1));
 298
 299   for (x= 0; x < ptr->number_of_hosts; x++)
 300   {
 301     rc= memcached_stats_fetch(ptr, stats+x, args, x);
 302     if (rc != MEMCACHED_SUCCESS)
 303       rc= MEMCACHED_SOME_ERRORS;
 304   }
 305
 306   *error= rc;
 307   return stats;
 308 }
 309
 310 memcached_return memcached_stat_servername(memcached_stat_st *stat, char *args,
 311                                            char *hostname, unsigned int port)
 312 {
 313   memcached_return rc;
 314   memcached_st memc;
 315
 316   memcached_create(&memc);
 317
 318   memcached_server_add(&memc, hostname, port);
 319
 320   rc= memcached_connect(&memc);
 321
 322   if (rc != MEMCACHED_SUCCESS)
 323     return rc;
 324
 325   rc= memcached_stats_fetch(&memc, stat, args, 0);
 326
 327   memcached_free(&memc);
 328
 329   return rc;
 330 }
 331
 332 /*
 333   We make a copy of the keys since at some point in the not so distant future
 334   we will add support for "found" keys.
 335 */
 336 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *stat,
 337                                 memcached_return *error)
 338 {
 339   char **list= (char **)malloc(sizeof(memcached_stat_keys));
 340
 341   memset(list, 0, sizeof(memcached_stat_keys));
 342
 343   if (!list)
 344   {
 345     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 346     return NULL;
 347   }
 348
 349   memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
 350
 351   *error= MEMCACHED_SUCCESS;
 352
 353   return list;
 354 }