f8cfdbda0f45a4540f95fdb7440b2499ea32635f
[awesomized/libmemcached] / libmemcached / 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_read", key))
88 {
89 stat->bytes_read= strtoll(value, (char **)NULL, 10);
90 }
91 else if (!strcmp("bytes_written", key))
92 {
93 stat->bytes_written= strtoll(value, (char **)NULL, 10);
94 }
95 else if (!strcmp("bytes", key))
96 {
97 stat->bytes= strtoll(value, (char **)NULL, 10);
98 }
99 else if (!strcmp("curr_connections", key))
100 {
101 stat->curr_connections= strtoll(value, (char **)NULL, 10);
102 }
103 else if (!strcmp("total_connections", key))
104 {
105 stat->total_connections= strtoll(value, (char **)NULL, 10);
106 }
107 else if (!strcmp("connection_structures", key))
108 {
109 stat->connection_structures= strtol(value, (char **)NULL, 10);
110 }
111 else if (!strcmp("cmd_get", key))
112 {
113 stat->cmd_get= strtoll(value, (char **)NULL, 10);
114 }
115 else if (!strcmp("cmd_set", key))
116 {
117 stat->cmd_set= strtoll(value, (char **)NULL, 10);
118 }
119 else if (!strcmp("get_hits", key))
120 {
121 stat->get_hits= strtoll(value, (char **)NULL, 10);
122 }
123 else if (!strcmp("get_misses", key))
124 {
125 stat->get_misses= (uint64_t)strtoll(value, (char **)NULL, 10);
126 }
127 else if (!strcmp("evictions", key))
128 {
129 stat->evictions= (uint64_t)strtoll(value, (char **)NULL, 10);
130 }
131 else if (!strcmp("limit_maxbytes", key))
132 {
133 stat->limit_maxbytes= strtoll(value, (char **)NULL, 10);
134 }
135 else if (!strcmp("threads", key))
136 {
137 stat->threads= strtol(value, (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", (unsigned long long)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 binary_stats_fetch(memcached_st *ptr,
215 memcached_stat_st *stat,
216 char *args,
217 unsigned int server_key)
218 {
219 memcached_return rc;
220
221 char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
222 protocol_binary_request_stats request= {0};
223 request.message.header.request.magic= PROTOCOL_BINARY_REQ;
224 request.message.header.request.opcode= PROTOCOL_BINARY_CMD_STAT;
225 request.message.header.request.datatype= PROTOCOL_BINARY_RAW_BYTES;
226
227 if (args != NULL)
228 {
229 int len= strlen(args);
230 request.message.header.request.keylen= htons((uint16_t)len);
231 request.message.header.request.bodylen= htonl(len);
232
233 if ((memcached_do(&ptr->hosts[server_key], request.bytes,
234 sizeof(request.bytes), 0) != MEMCACHED_SUCCESS) ||
235 (memcached_io_write(&ptr->hosts[server_key], args, len, 1) == -1))
236 {
237 memcached_io_reset(&ptr->hosts[server_key]);
238 return MEMCACHED_WRITE_FAILURE;
239 }
240 }
241 else
242 {
243 if (memcached_do(&ptr->hosts[server_key], request.bytes,
244 sizeof(request.bytes), 1) != MEMCACHED_SUCCESS)
245 {
246 memcached_io_reset(&ptr->hosts[server_key]);
247 return MEMCACHED_WRITE_FAILURE;
248 }
249 }
250
251 memcached_server_response_decrement(&ptr->hosts[server_key]);
252 do
253 {
254 rc= memcached_response(&ptr->hosts[server_key], buffer,
255 sizeof(buffer), NULL);
256 if (rc == MEMCACHED_END)
257 break;
258
259 unlikely (rc != MEMCACHED_SUCCESS)
260 {
261 memcached_io_reset(&ptr->hosts[server_key]);
262 return rc;
263 }
264
265 set_data(stat, buffer, buffer + strlen(buffer) + 1);
266 } while (1);
267
268 /* shit... memcached_response will decrement the counter, so I need to
269 ** reset it.. todo: look at this and try to find a better solution.
270 */
271 ptr->hosts[server_key].cursor_active= 0;
272
273 return MEMCACHED_SUCCESS;
274 }
275
276 static memcached_return ascii_stats_fetch(memcached_st *ptr,
277 memcached_stat_st *stat,
278 char *args,
279 unsigned int server_key)
280 {
281 memcached_return rc;
282 char buffer[MEMCACHED_DEFAULT_COMMAND_SIZE];
283 size_t send_length;
284
285 if (args)
286 send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
287 "stats %s\r\n", args);
288 else
289 send_length= snprintf(buffer, MEMCACHED_DEFAULT_COMMAND_SIZE,
290 "stats\r\n");
291
292 if (send_length >= MEMCACHED_DEFAULT_COMMAND_SIZE)
293 return MEMCACHED_WRITE_FAILURE;
294
295 rc= memcached_do(&ptr->hosts[server_key], buffer, send_length, 1);
296 if (rc != MEMCACHED_SUCCESS)
297 goto error;
298
299 while (1)
300 {
301 rc= memcached_response(&ptr->hosts[server_key], buffer, MEMCACHED_DEFAULT_COMMAND_SIZE, NULL);
302
303 if (rc == MEMCACHED_STAT)
304 {
305 char *string_ptr, *end_ptr;
306 char *key, *value;
307
308 string_ptr= buffer;
309 string_ptr+= 5; /* Move past STAT */
310 for (end_ptr= string_ptr; isgraph(*end_ptr); end_ptr++);
311 key= string_ptr;
312 key[(size_t)(end_ptr-string_ptr)]= 0;
313
314 string_ptr= end_ptr + 1;
315 for (end_ptr= string_ptr; !(isspace(*end_ptr)); end_ptr++);
316 value= string_ptr;
317 value[(size_t)(end_ptr-string_ptr)]= 0;
318 string_ptr= end_ptr + 2;
319 set_data(stat, key, value);
320 }
321 else
322 break;
323 }
324
325 error:
326 if (rc == MEMCACHED_END)
327 return MEMCACHED_SUCCESS;
328 else
329 return rc;
330 }
331
332 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return *error)
333 {
334 unsigned int x;
335 memcached_return rc;
336 memcached_stat_st *stats;
337
338 if (ptr->call_malloc)
339 stats= (memcached_stat_st *)ptr->call_malloc(ptr, sizeof(memcached_stat_st)*(ptr->number_of_hosts));
340 else
341 stats= (memcached_stat_st *)malloc(sizeof(memcached_stat_st)*(ptr->number_of_hosts));
342
343 if (!stats)
344 {
345 *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
346 if (ptr->call_free)
347 ptr->call_free(ptr, stats);
348 else
349 free(stats);
350
351 return NULL;
352 }
353 memset(stats, 0, sizeof(memcached_stat_st)*(ptr->number_of_hosts));
354
355 rc= MEMCACHED_SUCCESS;
356 for (x= 0; x < ptr->number_of_hosts; x++)
357 {
358 memcached_return temp_return;
359
360 if (ptr->flags & MEM_BINARY_PROTOCOL)
361 temp_return= binary_stats_fetch(ptr, stats + x, args, x);
362 else
363 temp_return= ascii_stats_fetch(ptr, stats + x, args, x);
364
365 if (temp_return != MEMCACHED_SUCCESS)
366 rc= MEMCACHED_SOME_ERRORS;
367 }
368
369 *error= rc;
370 return stats;
371 }
372
373 memcached_return memcached_stat_servername(memcached_stat_st *stat, char *args,
374 char *hostname, unsigned int port)
375 {
376 memcached_return rc;
377 memcached_st memc;
378
379 memcached_create(&memc);
380
381 memcached_server_add(&memc, hostname, port);
382
383 if (memc.flags & MEM_BINARY_PROTOCOL)
384 rc= binary_stats_fetch(&memc, stat, args, 0);
385 else
386 rc= ascii_stats_fetch(&memc, stat, args, 0);
387
388 memcached_free(&memc);
389
390 return rc;
391 }
392
393 /*
394 We make a copy of the keys since at some point in the not so distant future
395 we will add support for "found" keys.
396 */
397 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *stat,
398 memcached_return *error)
399 {
400 char **list;
401 size_t length= sizeof(memcached_stat_keys);
402
403 if (ptr->call_malloc)
404 list= (char **)ptr->call_malloc(ptr, length);
405 else
406 list= (char **)malloc(length);
407
408 if (!list)
409 {
410 *error= MEMCACHED_MEMORY_ALLOCATION_FAILURE;
411 return NULL;
412 }
413 memset(list, 0, sizeof(memcached_stat_keys));
414
415 memcpy(list, memcached_stat_keys, sizeof(memcached_stat_keys));
416
417 *error= MEMCACHED_SUCCESS;
418
419 return list;
420 }
421
422 void memcached_stat_free(memcached_st *ptr, memcached_stat_st *stat)
423 {
424 if (stat == NULL)
425 {
426 WATCHPOINT_ASSERT(0); /* Be polite, but when debugging catch this as an error */
427 return;
428 }
429
430 if (ptr && ptr->call_free)
431 ptr->call_free(ptr, stat);
432 else
433 free(stat);
434 }