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[m6w6/libmemcached] / libmemcached / memcached_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 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 {
154 WATCHPOINT_STRING(key);
155 return MEMCACHED_UNKNOWN_STAT_KEY;
156 }
157
158 return MEMCACHED_SUCCESS;
159 }
160
161 char *memcached_stat_get_value(memcached_st *ptr, memcached_stat_st *memc_stat,
162 const char *key, memcached_return *error)
163 {
164 char buffer[SMALL_STRING_LEN];
165 int length;
166 char *ret;
167
168 *error= MEMCACHED_SUCCESS;
169
170 if (!memcmp("pid", key, strlen("pid")))
171 length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->pid);
172 else if (!memcmp("uptime", key, strlen("uptime")))
173 length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->uptime);
174 else if (!memcmp("time", key, strlen("time")))
175 length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->time);
176 else if (!memcmp("version", key, strlen("version")))
177 length= snprintf(buffer, SMALL_STRING_LEN,"%s", memc_stat->version);
178 else if (!memcmp("pointer_size", key, strlen("pointer_size")))
179 length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->pointer_size);
180 else if (!memcmp("rusage_user", key, strlen("rusage_user")))
181 length= snprintf(buffer, SMALL_STRING_LEN,"%u.%u", memc_stat->rusage_user_seconds, memc_stat->rusage_user_microseconds);
182 else if (!memcmp("rusage_system", key, strlen("rusage_system")))
183 length= snprintf(buffer, SMALL_STRING_LEN,"%u.%u", memc_stat->rusage_system_seconds, memc_stat->rusage_system_microseconds);
184 else if (!memcmp("curr_items", key, strlen("curr_items")))
185 length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->curr_items);
186 else if (!memcmp("total_items", key, strlen("total_items")))
187 length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->total_items);
188 else if (!memcmp("bytes", key, strlen("bytes")))
189 length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->bytes);
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("limit_maxbytes", key, strlen("limit_maxbytes")))
211 length= snprintf(buffer, SMALL_STRING_LEN,"%llu", (unsigned long long)memc_stat->limit_maxbytes);
212 else if (!memcmp("threads", key, strlen("threads")))
213 length= snprintf(buffer, SMALL_STRING_LEN,"%u", memc_stat->threads);
214 else
215 {
216 *error= MEMCACHED_NOTFOUND;
217 return NULL;
218 }
219
220 ret= ptr->call_malloc(ptr, (size_t) (length + 1));
221 memcpy(ret, buffer, (size_t) length);
222 ret[length]= '\0';
223
224 return ret;
225 }
226
227 static memcached_return binary_stats_fetch(memcached_st *ptr,
228 memcached_stat_st *memc_stat,
229 char *args,
230 unsigned int server_key)
231 {
232 memcached_return rc;
233
234 char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
235 protocol_binary_request_stats request= {.bytes= {0}};
236 request.message.header.request.magic= PROTOCOL_BINARY_REQ;
237 request.message.header.request.opcode= PROTOCOL_BINARY_CMD_STAT;
238 request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
239
240 if (args != NULL)
241 {
242 size_t len= strlen(args);
243
244 rc= memcached_validate_key_length(len, true);
245 unlikely (rc != MEMCACHED_SUCCESS)
246 return rc;
247
248 request.message.header.request.keylen= htons((uint16_t)len);
249 request.message.header.request.bodylen= htonl((uint32_t) len);
250
251 if ((memcached_do(&ptr->hosts[server_key], request.bytes,
252 sizeof(request.bytes), 0) != MEMCACHED_SUCCESS) ||
253 (memcached_io_write(&ptr->hosts[server_key], args, len, 1) == -1))
254 {
255 memcached_io_reset(&ptr->hosts[server_key]);
256 return MEMCACHED_WRITE_FAILURE;
257 }
258 }
259 else
260 {
261 if (memcached_do(&ptr->hosts[server_key], request.bytes,
262 sizeof(request.bytes), 1) != MEMCACHED_SUCCESS)
263 {
264 memcached_io_reset(&ptr->hosts[server_key]);
265 return MEMCACHED_WRITE_FAILURE;
266 }
267 }
268
269 memcached_server_response_decrement(&ptr->hosts[server_key]);
270 do
271 {
272 rc= memcached_response(&ptr->hosts[server_key], buffer,
273 sizeof(buffer), NULL);
274 if (rc == MEMCACHED_END)
275 break;
276
277 unlikely (rc != MEMCACHED_SUCCESS)
278 {
279 memcached_io_reset(&ptr->hosts[server_key]);
280 return rc;
281 }
282
283 unlikely((set_data(memc_stat, buffer, buffer + strlen(buffer) + 1)) == MEMCACHED_UNKNOWN_STAT_KEY)
284 {
285 WATCHPOINT_ERROR(MEMCACHED_UNKNOWN_STAT_KEY);
286 WATCHPOINT_ASSERT(0);
287 }
288 } while (1);
289
290 /* shit... memcached_response will decrement the counter, so I need to
291 ** reset it.. todo: look at this and try to find a better solution.
292 */
293 ptr->hosts[server_key].cursor_active= 0;
294
295 return MEMCACHED_SUCCESS;
296 }
297
298 static memcached_return ascii_stats_fetch(memcached_st *ptr,
299 memcached_stat_st *memc_stat,
300 char *args,
301 unsigned int server_key)
302 {
303 memcached_return rc;
304 char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
305 size_t send_length;
306
307 if (args)
308 send_length= (size_t) snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
309 "stats %s\r\n", args);
310 else
311 send_length= (size_t) snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
312 "stats\r\n");
313
314 if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
315 return MEMCACHED_WRITE_FAILURE;
316
317 rc= memcached_do(&ptr->hosts[server_key], buffer, send_length, 1);
318 if (rc != MEMCACHED_SUCCESS)
319 goto error;
320
321 while (1)
322 {
323 rc= memcached_response(&ptr->hosts[server_key], buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
324
325 if (rc == MEMCACHED_STAT)
326 {
327 char *string_ptr, *end_ptr;
328 char *key, *value;
329
330 string_ptr= buffer;
331 string_ptr+= 5; /* Move past STAT */
332 for (end_ptr= string_ptr; isgraph(*end_ptr); end_ptr++);
333 key= string_ptr;
334 key[(size_t)(end_ptr-string_ptr)]= 0;
335
336 string_ptr= end_ptr + 1;
337 for (end_ptr= string_ptr; !(isspace(*end_ptr)); end_ptr++);
338 value= string_ptr;
339 value[(size_t)(end_ptr-string_ptr)]= 0;
340 string_ptr= end_ptr + 2;
341 unlikely((set_data(memc_stat, key, value)) == MEMCACHED_UNKNOWN_STAT_KEY)
342 {
343 WATCHPOINT_ERROR(MEMCACHED_UNKNOWN_STAT_KEY);
344 WATCHPOINT_ASSERT(0);
345 }
346 }
347 else
348 break;
349 }
350
351 error:
352 if (rc == MEMCACHED_END)
353 return MEMCACHED_SUCCESS;
354 else
355 return rc;
356 }
357
358 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return *error)
359 {
360 unsigned int x;
361 memcached_return rc;
362 memcached_stat_st *stats;
363
364 unlikely (ptr->flags & MEM_USE_UDP)
365 {
366 *error= MEMCACHED_NOT_SUPPORTED;
367 return NULL;
368 }
369
370 stats= ptr->call_calloc(ptr, ptr->number_of_hosts, sizeof(memcached_stat_st));
371
372 if (!stats)
373 {
374 *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
375 return NULL;
376 }
377
378 rc= MEMCACHED_SUCCESS;
379 for (x= 0; x < ptr->number_of_hosts; x++)
380 {
381 memcached_return temp_return;
382
383 if (ptr->flags & MEM_BINARY_PROTOCOL)
384 temp_return= binary_stats_fetch(ptr, stats + x, args, x);
385 else
386 temp_return= ascii_stats_fetch(ptr, stats + x, args, x);
387
388 if (temp_return != MEMCACHED_SUCCESS)
389 rc= MEMCACHED_SOME_ERRORS;
390 }
391
392 *error= rc;
393 return stats;
394 }
395
396 memcached_return memcached_stat_servername(memcached_stat_st *memc_stat, char *args,
397 char *hostname, unsigned int port)
398 {
399 memcached_return rc;
400 memcached_st memc;
401
402 memcached_create(&memc);
403
404 memcached_server_add(&memc, hostname, port);
405
406 if (memc.flags & MEM_BINARY_PROTOCOL)
407 rc= binary_stats_fetch(&memc, memc_stat, args, 0);
408 else
409 rc= ascii_stats_fetch(&memc, memc_stat, args, 0);
410
411 memcached_free(&memc);
412
413 return rc;
414 }
415
416 /*
417 We make a copy of the keys since at some point in the not so distant future
418 we will add support for "found" keys.
419 */
420 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *memc_stat,
421 memcached_return *error)
422 {
423 (void) memc_stat;
424 char **list;
425 size_t length= sizeof(memcached_stat_keys);
426
427 list= ptr->call_malloc(ptr, length);
428
429 if (!list)
430 {
431 *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
432 return NULL;
433 }
434
435 memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
436
437 *error= MEMCACHED_SUCCESS;
438
439 return list;
440 }
441
442 void memcached_stat_free(memcached_st *ptr, memcached_stat_st *memc_stat)
443 {
444 if (memc_stat == NULL)
445 {
446 WATCHPOINT_ASSERT(0); /* Be polite, but when debugging catch this as an error */
447 return;
448 }
449
450 if (ptr)
451 ptr->call_free(ptr, memc_stat);
452 else
453 free(memc_stat);
454 }