Style cleanup.
[m6w6/libmemcached] / 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= ptr->call_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_st *ptr,
230 memcached_stat_st *memc_stat,
231 char *args,
232 unsigned int server_key)
233 {
234 memcached_return_t rc;
235
236 char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
237 protocol_binary_request_stats request= {.bytes= {0}};
238 request.message.header.request.magic= PROTOCOL_BINARY_REQ;
239 request.message.header.request.opcode= PROTOCOL_BINARY_CMD_STAT;
240 request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
241
242 if (args != NULL)
243 {
244 size_t len= strlen(args);
245
246 rc= memcached_validate_key_length(len, true);
247 unlikely (rc != MEMCACHED_SUCCESS)
248 return rc;
249
250 request.message.header.request.keylen= htons((uint16_t)len);
251 request.message.header.request.bodylen= htonl((uint32_t) len);
252
253 if ((memcached_do(&ptr->hosts[server_key], request.bytes,
254 sizeof(request.bytes), 0) != MEMCACHED_SUCCESS) ||
255 (memcached_io_write(&ptr->hosts[server_key], args, len, 1) == -1))
256 {
257 memcached_io_reset(&ptr->hosts[server_key]);
258 return MEMCACHED_WRITE_FAILURE;
259 }
260 }
261 else
262 {
263 if (memcached_do(&ptr->hosts[server_key], request.bytes,
264 sizeof(request.bytes), 1) != MEMCACHED_SUCCESS)
265 {
266 memcached_io_reset(&ptr->hosts[server_key]);
267 return MEMCACHED_WRITE_FAILURE;
268 }
269 }
270
271 memcached_server_response_decrement(&ptr->hosts[server_key]);
272 do
273 {
274 rc= memcached_response(&ptr->hosts[server_key], buffer,
275 sizeof(buffer), NULL);
276 if (rc == MEMCACHED_END)
277 break;
278
279 unlikely (rc != MEMCACHED_SUCCESS)
280 {
281 memcached_io_reset(&ptr->hosts[server_key]);
282 return rc;
283 }
284
285 unlikely((set_data(memc_stat, buffer, buffer + strlen(buffer) + 1)) == MEMCACHED_UNKNOWN_STAT_KEY)
286 {
287 WATCHPOINT_ERROR(MEMCACHED_UNKNOWN_STAT_KEY);
288 WATCHPOINT_ASSERT(0);
289 }
290 } while (1);
291
292 /* shit... memcached_response will decrement the counter, so I need to
293 ** reset it.. todo: look at this and try to find a better solution.
294 */
295 ptr->hosts[server_key].cursor_active= 0;
296
297 return MEMCACHED_SUCCESS;
298 }
299
300 static memcached_return_t ascii_stats_fetch(memcached_st *ptr,
301 memcached_stat_st *memc_stat,
302 char *args,
303 unsigned int server_key)
304 {
305 memcached_return_t rc;
306 char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
307 size_t send_length;
308
309 if (args)
310 send_length= (size_t) snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
311 "stats %s\r\n", args);
312 else
313 send_length= (size_t) snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
314 "stats\r\n");
315
316 if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
317 return MEMCACHED_WRITE_FAILURE;
318
319 rc= memcached_do(&ptr->hosts[server_key], buffer, send_length, 1);
320 if (rc != MEMCACHED_SUCCESS)
321 goto error;
322
323 while (1)
324 {
325 rc= memcached_response(&ptr->hosts[server_key], buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
326
327 if (rc == MEMCACHED_STAT)
328 {
329 char *string_ptr, *end_ptr;
330 char *key, *value;
331
332 string_ptr= buffer;
333 string_ptr+= 5; /* Move past STAT */
334 for (end_ptr= string_ptr; isgraph(*end_ptr); end_ptr++);
335 key= string_ptr;
336 key[(size_t)(end_ptr-string_ptr)]= 0;
337
338 string_ptr= end_ptr + 1;
339 for (end_ptr= string_ptr; !(isspace(*end_ptr)); end_ptr++);
340 value= string_ptr;
341 value[(size_t)(end_ptr-string_ptr)]= 0;
342 string_ptr= end_ptr + 2;
343 unlikely((set_data(memc_stat, key, value)) == MEMCACHED_UNKNOWN_STAT_KEY)
344 {
345 WATCHPOINT_ERROR(MEMCACHED_UNKNOWN_STAT_KEY);
346 WATCHPOINT_ASSERT(0);
347 }
348 }
349 else
350 break;
351 }
352
353 error:
354 if (rc == MEMCACHED_END)
355 return MEMCACHED_SUCCESS;
356 else
357 return rc;
358 }
359
360 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return_t *error)
361 {
362 unsigned int x;
363 memcached_return_t rc;
364 memcached_stat_st *stats;
365
366 unlikely (ptr->flags.use_udp)
367 {
368 *error= MEMCACHED_NOT_SUPPORTED;
369 return NULL;
370 }
371
372 stats= ptr->call_calloc(ptr, memcached_server_count(ptr), sizeof(memcached_stat_st));
373
374 stats->root= ptr;
375
376 if (!stats)
377 {
378 *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
379 return NULL;
380 }
381
382 rc= MEMCACHED_SUCCESS;
383 for (x= 0; x < memcached_server_count(ptr); x++)
384 {
385 memcached_return_t temp_return;
386
387 if (ptr->flags.binary_protocol)
388 temp_return= binary_stats_fetch(ptr, stats + x, args, x);
389 else
390 temp_return= ascii_stats_fetch(ptr, stats + x, args, x);
391
392 if (temp_return != MEMCACHED_SUCCESS)
393 rc= MEMCACHED_SOME_ERRORS;
394 }
395
396 *error= rc;
397 return stats;
398 }
399
400 memcached_return_t memcached_stat_servername(memcached_stat_st *memc_stat, char *args,
401 const char *hostname, in_port_t port)
402 {
403 memcached_return_t rc;
404 memcached_st memc;
405 memcached_st *memc_ptr;
406
407 memc_ptr= memcached_create(&memc);
408 WATCHPOINT_ASSERT(memc_ptr);
409
410 memcached_server_add(&memc, hostname, port);
411
412 if (memc.flags.binary_protocol)
413 rc= binary_stats_fetch(&memc, memc_stat, args, 0);
414 else
415 rc= ascii_stats_fetch(&memc, memc_stat, args, 0);
416
417 memcached_free(&memc);
418
419 return rc;
420 }
421
422 /*
423 We make a copy of the keys since at some point in the not so distant future
424 we will add support for "found" keys.
425 */
426 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *memc_stat,
427 memcached_return_t *error)
428 {
429 (void) memc_stat;
430 char **list;
431 size_t length= sizeof(memcached_stat_keys);
432
433 list= ptr->call_malloc(ptr, length);
434
435 if (!list)
436 {
437 *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
438 return NULL;
439 }
440
441 memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
442
443 *error= MEMCACHED_SUCCESS;
444
445 return list;
446 }
447
448 void memcached_stat_free(memcached_st *ptr, memcached_stat_st *memc_stat)
449 {
450 if (memc_stat == NULL)
451 {
452 WATCHPOINT_ASSERT(0); /* Be polite, but when debugging catch this as an error */
453 return;
454 }
455
456 if (memc_stat->root)
457 {
458 memc_stat->root->call_free(ptr, memc_stat);
459 }
460 else if (ptr)
461 {
462 ptr->call_free(ptr, memc_stat);
463 }
464 else
465 {
466 free(memc_stat);
467 }
468 }