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   "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", key))
  88   {
  89     stat->bytes= strtoll(value, (char **)NULL, 10);
  90   }
  91   else if (!strcmp("curr_connections", key))
  92   {
  93     stat->curr_connections= strtoll(value, (char **)NULL, 10);
  94   }
  95   else if (!strcmp("total_connections", key))
  96   {
  97     stat->total_connections= strtoll(value, (char **)NULL, 10);
  98   }
  99   else if (!strcmp("connection_structures", key))
 100   {
 101     stat->connection_structures= strtol(value, (char **)NULL, 10);
 102   }
 103   else if (!strcmp("cmd_get", key))
 104   {
 105     stat->cmd_get= strtoll(value, (char **)NULL, 10);
 106   }
 107   else if (!strcmp("cmd_set", key))
 108   {
 109     stat->cmd_set= strtoll(value, (char **)NULL, 10);
 110   }
 111   else if (!strcmp("get_hits", key))
 112   {
 113     stat->get_hits= strtoll(value, (char **)NULL, 10);
 114   }
 115   else if (!strcmp("get_misses", key))
 116   {
 117     stat->get_misses= (uint64_t)strtoll(value, (char **)NULL, 10);
 118   }
 119   else if (!strcmp("evictions", key))
 120   {
 121     stat->evictions= (uint64_t)strtoll(value, (char **)NULL, 10);
 122   }
 123   else if (!strcmp("bytes_read", key))
 124   {
 125     stat->bytes_read= strtoll(value, (char **)NULL, 10);
 126   }
 127   else if (!strcmp("bytes_written", key))
 128   {
 129     stat->bytes_written= strtoll(value, (char **)NULL, 10);
 130   }
 131   else if (!strcmp("limit_maxbytes", key))
 132   {
 133     stat->limit_maxbytes= strtol(value, (char **)NULL, 10);
 134   }
 135   else if (!strcmp("threads", key))
 136   {
 137     stat->threads= strtol(key, (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                                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", 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 memcached_stats_fetch(memcached_st *ptr,
 215                                               memcached_stat_st *stat,
 216                                               char *args,
 217                                               unsigned int server_key)
 218 {
 219   memcached_return rc;
 220   char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
 221   size_t send_length;
 222
 223   if (args)
 224     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 225                           "stats %s\r\n", args);
 226   else
 227     send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
 228                           "stats\r\n");
 229
 230   if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
 231     return MEMCACHED_WRITE_FAILURE;
 232
 233   rc= memcached_do(&ptr->hosts[server_key], buffer, send_length, 1);
 234   if (rc != MEMCACHED_SUCCESS)
 235       goto error;
 236
 237   while (1)
 238   {
 239     rc= memcached_response(&ptr->hosts[server_key], buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
 240
 241     if (rc == MEMCACHED_STAT)
 242     {
 243       char *string_ptr, *end_ptr;
 244       char *key, *value;
 245
 246       string_ptr= buffer;
 247       string_ptr+= 5; /* Move past STAT */
 248       for (end_ptr= string_ptr; isgraph(*end_ptr); end_ptr++);
 249       key= string_ptr;
 250       key[(size_t)(end_ptr-string_ptr)]= 0;
 251
 252       string_ptr= end_ptr + 1;
 253       for (end_ptr= string_ptr; !(isspace(*end_ptr)); end_ptr++);
 254       value= string_ptr;
 255       value[(size_t)(end_ptr-string_ptr)]= 0;
 256       string_ptr= end_ptr + 2;
 257       set_data(stat, key, value);
 258     }
 259     else
 260       break;
 261   }
 262
 263 error:
 264   if (rc == MEMCACHED_END)
 265     return MEMCACHED_SUCCESS;
 266   else
 267     return rc;
 268 }
 269
 270 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return *error)
 271 {
 272   unsigned int x;
 273   memcached_return rc;
 274   memcached_stat_st *stats;
 275
 276   if (ptr->call_malloc)
 277     stats= (memcached_stat_st *)ptr->call_malloc(ptr, sizeof(memcached_stat_st)*(ptr->number_of_hosts));
 278   else
 279     stats= (memcached_stat_st *)malloc(sizeof(memcached_stat_st)*(ptr->number_of_hosts));
 280
 281   if (!stats)
 282   {
 283     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 284     if (ptr->call_free)
 285       ptr->call_free(ptr, stats);
 286     else
 287       free(stats);
 288
 289     return NULL;
 290   }
 291   memset(stats, 0, sizeof(memcached_stat_st)*(ptr->number_of_hosts));
 292
 293   rc= MEMCACHED_SUCCESS;
 294   for (x= 0; x < ptr->number_of_hosts; x++)
 295   {
 296     memcached_return temp_return;
 297
 298     temp_return= memcached_stats_fetch(ptr, stats + x, args, x);
 299     if (temp_return != MEMCACHED_SUCCESS)
 300       rc= MEMCACHED_SOME_ERRORS;
 301   }
 302
 303   *error= rc;
 304   return stats;
 305 }
 306
 307 memcached_return memcached_stat_servername(memcached_stat_st *stat, char *args,
 308                                            char *hostname, unsigned int port)
 309 {
 310   memcached_return rc;
 311   memcached_st memc;
 312
 313   memcached_create(&memc);
 314
 315   memcached_server_add(&memc, hostname, port);
 316
 317   rc= memcached_stats_fetch(&memc, stat, args, 0);
 318
 319   memcached_free(&memc);
 320
 321   return rc;
 322 }
 323
 324 /*
 325   We make a copy of the keys since at some point in the not so distant future
 326   we will add support for "found" keys.
 327 */
 328 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *stat,
 329                                 memcached_return *error)
 330 {
 331   char **list;
 332   size_t length= sizeof(memcached_stat_keys);
 333
 334   if (ptr->call_malloc)
 335     list= (char **)ptr->call_malloc(ptr, length);
 336   else
 337     list= (char **)malloc(length);
 338
 339   if (!list)
 340   {
 341     *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
 342     return NULL;
 343   }
 344   memset(list, 0, sizeof(memcached_stat_keys));
 345
 346   memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
 347
 348   *error= MEMCACHED_SUCCESS;
 349
 350   return list;
 351 }
 352
 353 void memcached_stat_free(memcached_st *ptr, memcached_stat_st *stat)
 354 {
 355   if (stat == NULL)
 356   {
 357     WATCHPOINT_ASSERT(0); /* Be polite, but when debugging catch this as an error */
 358     return;
 359   }
 360
 361   if (ptr && ptr->call_free)
 362     ptr->call_free(ptr, stat);
 363   else
 364     free(stat);
 365 }