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   if (!memcmp("pid", key, strlen("pid")))
 156     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->pid);
 157   else if (!memcmp("uptime", key, strlen("uptime")))
 158     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->uptime);
 159   else if (!memcmp("time", key, strlen("time")))
 160     snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)stat->time);
 161   else if (!memcmp("version", key, strlen("version")))
 162     snprintf(buffer, SMALL_STRING_LEN,"%s", stat->version);
 163   else if (!memcmp("pointer_size", key, strlen("pointer_size")))
 164     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->pointer_size);
 165   else if (!memcmp("rusage_user", key, strlen("rusage_user")))
 166     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_user);
 167   else if (!memcmp("rusage_system", key, strlen("rusage_system")))
 168     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_system);
 169   else if (!memcmp("rusage_user_seconds", key, strlen("rusage_user_seconds")))
 170     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_user_seconds);
 171   else if (!memcmp("rusage_user_microseconds", key, strlen("rusage_user_microseconds")))
 172     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_user_microseconds);
 173   else if (!memcmp("rusage_system_seconds", key, strlen("rusage_system_seconds")))
 174     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_system_seconds);
 175   else if (!memcmp("rusage_system_microseconds", key, strlen("rusage_system_microseconds")))
 176     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->rusage_system_microseconds);
 177   else if (!memcmp("curr_items", key, strlen("curr_items")))
 178     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->curr_items);
 179   else if (!memcmp("total_items", key, strlen("total_items")))
 180     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->total_items);
 181   else if (!memcmp("bytes", key, strlen("bytes")))
 182     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->bytes);
 183   else if (!memcmp("curr_connections", key, strlen("curr_connections")))
 184     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->curr_connections);
 185   else if (!memcmp("total_connections", key, strlen("total_connections")))
 186     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->total_connections);
 187   else if (!memcmp("connection_structures", key, strlen("connection_structures")))
 188     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->connection_structures);
 189   else if (!memcmp("cmd_get", key, strlen("cmd_get")))
 190     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->cmd_get);
 191   else if (!memcmp("cmd_set", key, strlen("cmd_set")))
 192     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->cmd_set);
 193   else if (!memcmp("get_hits", key, strlen("get_hits")))
 194     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->get_hits);
 195   else if (!memcmp("get_misses", key, strlen("get_misses")))
 196     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->get_misses);
 197   else if (!memcmp("evictions", key, strlen("evictions")))
 198     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->evictions);
 199   else if (!memcmp("bytes_read", key, strlen("bytes_read")))
 200     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->bytes_read);
 201   else if (!memcmp("bytes_written", key, strlen("bytes_written")))
 202     snprintf(buffer, SMALL_STRING_LEN,"%llu", stat->bytes_written);
 203   else if (!memcmp("limit_maxbytes", key, strlen("limit_maxbytes")))
 204     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->limit_maxbytes);
 205   else if (!memcmp("threads", key, strlen("threads")))
 206     snprintf(buffer, SMALL_STRING_LEN,"%u", stat->threads);
 207   else
 208   {
 209     *error= MEMCACHED_NOTFOUND;
 210     return NULL;
 211   }
 212
 213   return strdup(buffer);
 214 }
 215
 216 static memcached_return memcached_stats_fetch(memcached_st *ptr,
 217                                               memcached_stat_st *stat,
 218                                               char *args,
 219                                               unsigned int server_key)
 220 {
 221   memcached_return rc;
 222   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
 223   size_t send_length;
 224
 225   rc= memcached_connect(ptr, server_key);
 226
 227   if (rc != MEMCACHED_SUCCESS)
 228     return rc;
 229
 230   if (args)
 231     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 232                           "stats %s\r\n", args);
 233   else
 234     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 235                           "stats\r\n");
 236
 237   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
 238     return MEMCACHED_WRITE_FAILURE;
 239
 240   rc= memcached_do(ptr, server_key, buffer, send_length, 1);
 241   if (rc != MEMCACHED_SUCCESS)
 242       goto error;
 243
 244   while (1)
 245   {
 246     rc= memcached_response(ptr, buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, server_key);
 247
 248     if (rc == MEMCACHED_STAT)
 249     {
 250       char *string_ptr, *end_ptr;
 251       char *key, *value;
 252
 253       string_ptr= buffer;
 254       string_ptr+= 5; /* Move past STAT */
 255       for (end_ptr= string_ptr; *end_ptr != ' '; end_ptr++);
 256       key= string_ptr;
 257       key[(size_t)(end_ptr-string_ptr)]= 0;
 258
 259       string_ptr= end_ptr + 1;
 260       for (end_ptr= string_ptr; *end_ptr != '\r'; end_ptr++);
 261       value= string_ptr;
 262       value[(size_t)(end_ptr-string_ptr)]= 0;
 263       string_ptr= end_ptr + 2;
 264       set_data(stat, key, value);
 265     }
 266     else
 267       break;
 268   }
 269
 270 error:
 271   if (rc == MEMCACHED_END)
 272     return MEMCACHED_SUCCESS;
 273   else
 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   stats= (memcached_stat_st *)malloc(sizeof(memcached_st)*(ptr->number_of_hosts+1));
 284   if (!stats)
 285   {
 286     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 287     free(stats);
 288     return NULL;
 289   }
 290   memset(stats, 0, sizeof(memcached_st)*(ptr->number_of_hosts+1));
 291
 292   rc= MEMCACHED_SUCCESS;
 293   for (x= 0; x < ptr->number_of_hosts; x++)
 294   {
 295     memcached_return temp_return;
 296     temp_return= memcached_stats_fetch(ptr, stats+x, args, x);
 297     if (temp_return != MEMCACHED_SUCCESS)
 298       rc= MEMCACHED_SOME_ERRORS;
 299   }
 300
 301   *error= rc;
 302   return stats;
 303 }
 304
 305 memcached_return memcached_stat_servername(memcached_stat_st *stat, char *args,
 306                                            char *hostname, unsigned int port)
 307 {
 308   memcached_return rc;
 309   memcached_st memc;
 310
 311   memcached_create(&memc);
 312
 313   memcached_server_add(&memc, hostname, port);
 314
 315   rc= memcached_stats_fetch(&memc, stat, args, 0);
 316
 317   memcached_free(&memc);
 318
 319   return rc;
 320 }
 321
 322 /*
 323   We make a copy of the keys since at some point in the not so distant future
 324   we will add support for "found" keys.
 325 */
 326 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *stat,
 327                                 memcached_return *error)
 328 {
 329   char **list= (char **)malloc(sizeof(memcached_stat_keys));
 330
 331   memset(list, 0, sizeof(memcached_stat_keys));
 332
 333   if (!list)
 334   {
 335     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 336     return NULL;
 337   }
 338
 339   memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
 340
 341   *error= MEMCACHED_SUCCESS;
 342
 343   return list;
 344 }
 345
 346 void memcached_stat_free(memcached_st *ptr, memcached_stat_st *stat)
 347 {
 348   free(stat);
 349 }