1 /**
2 * collectd - src/collectdctl.c
3 * Copyright (C) 2010 Håkon J Dugstad Johnsen
4 * Copyright (C) 2010 Sebastian Harl
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; only version 2 of the License is applicable.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 * Authors:
20 * Håkon J Dugstad Johnsen <hakon-dugstad.johnsen at telenor.com>
21 * Sebastian "tokkee" Harl <sh@tokkee.org>
22 **/
24 #if HAVE_CONFIG_H
25 # include "config.h"
26 #endif
28 #include <stdlib.h>
29 #include <unistd.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <strings.h>
34 #include <assert.h>
35 #include <errno.h>
37 #if NAN_STATIC_DEFAULT
38 # include <math.h>
39 /* #endif NAN_STATIC_DEFAULT*/
40 #elif NAN_STATIC_ISOC
41 # ifndef __USE_ISOC99
42 # define DISABLE_ISOC99 1
43 # define __USE_ISOC99 1
44 # endif /* !defined(__USE_ISOC99) */
45 # include <math.h>
46 # if DISABLE_ISOC99
47 # undef DISABLE_ISOC99
48 # undef __USE_ISOC99
49 # endif /* DISABLE_ISOC99 */
50 /* #endif NAN_STATIC_ISOC */
51 #elif NAN_ZERO_ZERO
52 # include <math.h>
53 # ifdef NAN
54 # undef NAN
55 # endif
56 # define NAN (0.0 / 0.0)
57 # ifndef isnan
58 # define isnan(f) ((f) != (f))
59 # endif /* !defined(isnan) */
60 # ifndef isfinite
61 # define isfinite(f) (((f) - (f)) == 0.0)
62 # endif
63 # ifndef isinf
64 # define isinf(f) (!isfinite(f) && !isnan(f))
65 # endif
66 #endif /* NAN_ZERO_ZERO */
68 #include "libcollectdclient/collectd/client.h"
70 #define DEFAULT_SOCK LOCALSTATEDIR"/run/"PACKAGE_NAME"-unixsock"
72 extern char *optarg;
73 extern int optind;
75 __attribute__((noreturn))
76 static void exit_usage (const char *name, int status) {
77 fprintf ((status == 0) ? stdout : stderr,
78 "Usage: %s [options] <command> [cmd options]\n\n"
80 "Available options:\n"
81 " -s Path to collectd's UNIX socket.\n"
82 " Default: "DEFAULT_SOCK"\n"
84 "\n -h Display this help and exit.\n"
86 "\nAvailable commands:\n\n"
88 " * getval <identifier>\n"
89 " * flush [timeout=<seconds>] [plugin=<name>] [identifier=<id>]\n"
90 " * listval\n"
91 " * putval <identifier> [interval=<seconds>] <value-list(s)>\n"
93 "\nIdentifiers:\n\n"
95 "An identifier has the following format:\n\n"
97 " [<hostname>/]<plugin>[-<plugin_instance>]/<type>[-<type_instance>]\n\n"
99 "Hostname defaults to the local hostname if omitted (e.g., uptime/uptime).\n"
100 "No error is returned if the specified identifier does not exist.\n"
102 "\n"PACKAGE_NAME" "PACKAGE_VERSION", http://collectd.org/\n"
103 "by Florian octo Forster <octo@collectd.org>\n"
104 "for contributions see `AUTHORS'\n"
105 , name);
106 exit (status);
107 }
109 /* Count the number of occurrences of the character 'chr'
110 * in the specified string. */
111 static int count_chars (const char *str, char chr) {
112 int count = 0;
114 while (*str != '\0') {
115 if (*str == chr) {
116 count++;
117 }
118 str++;
119 }
121 return count;
122 } /* count_chars */
124 static int array_grow (void **array, size_t *array_len, size_t elem_size)
125 {
126 void *tmp;
128 assert ((array != NULL) && (array_len != NULL));
130 tmp = realloc (*array, (*array_len + 1) * elem_size);
131 if (tmp == NULL) {
132 fprintf (stderr, "ERROR: Failed to allocate memory.\n");
133 return (-1);
134 }
136 *array = tmp;
137 ++(*array_len);
138 return (0);
139 } /* array_grow */
141 static int parse_identifier (lcc_connection_t *c,
142 const char *value, lcc_identifier_t *ident)
143 {
144 char hostname[1024];
145 char ident_str[1024] = "";
146 int n_slashes;
148 int status;
150 n_slashes = count_chars (value, '/');
151 if (n_slashes == 1) {
152 /* The user has omitted the hostname part of the identifier
153 * (there is only one '/' in the identifier)
154 * Let's add the local hostname */
155 if (gethostname (hostname, sizeof (hostname)) != 0) {
156 fprintf (stderr, "ERROR: Failed to get local hostname: %s",
157 strerror (errno));
158 return (-1);
159 }
160 hostname[sizeof (hostname) - 1] = '\0';
162 snprintf (ident_str, sizeof (ident_str), "%s/%s", hostname, value);
163 ident_str[sizeof(ident_str) - 1] = '\0';
164 }
165 else {
166 strncpy (ident_str, value, sizeof (ident_str));
167 ident_str[sizeof (ident_str) - 1] = '\0';
168 }
170 status = lcc_string_to_identifier (c, ident, ident_str);
171 if (status != 0) {
172 fprintf (stderr, "ERROR: Failed to parse identifier ``%s'': %s.\n",
173 ident_str, lcc_strerror(c));
174 return (-1);
175 }
176 return (0);
177 } /* parse_identifier */
179 static int getval (lcc_connection_t *c, int argc, char **argv)
180 {
181 lcc_identifier_t ident;
183 size_t ret_values_num = 0;
184 gauge_t *ret_values = NULL;
185 char **ret_values_names = NULL;
187 int status;
188 size_t i;
190 assert (strcasecmp (argv[0], "getval") == 0);
192 if (argc != 2) {
193 fprintf (stderr, "ERROR: getval: Missing identifier.\n");
194 return (-1);
195 }
197 memset (&ident, 0, sizeof (ident));
198 status = parse_identifier (c, argv[1], &ident);
199 if (status != 0)
200 return (status);
202 #define BAIL_OUT(s) \
203 do { \
204 if (ret_values != NULL) \
205 free (ret_values); \
206 if (ret_values_names != NULL) { \
207 for (i = 0; i < ret_values_num; ++i) \
208 free (ret_values_names[i]); \
209 free (ret_values_names); \
210 } \
211 ret_values_num = 0; \
212 return (s); \
213 } while (0)
215 status = lcc_getval (c, &ident,
216 &ret_values_num, &ret_values, &ret_values_names);
217 if (status != 0) {
218 fprintf (stderr, "ERROR: %s\n", lcc_strerror (c));
219 BAIL_OUT (-1);
220 }
222 for (i = 0; i < ret_values_num; ++i)
223 printf ("%s=%e\n", ret_values_names[i], ret_values[i]);
224 BAIL_OUT (0);
225 #undef BAIL_OUT
226 } /* getval */
228 static int flush (lcc_connection_t *c, int argc, char **argv)
229 {
230 int timeout = -1;
232 lcc_identifier_t *identifiers = NULL;
233 size_t identifiers_num = 0;
235 char **plugins = NULL;
236 size_t plugins_num = 0;
238 int status;
239 int i;
241 assert (strcasecmp (argv[0], "flush") == 0);
243 #define BAIL_OUT(s) \
244 do { \
245 if (identifiers != NULL) \
246 free (identifiers); \
247 identifiers_num = 0; \
248 if (plugins != NULL) \
249 free (plugins); \
250 plugins_num = 0; \
251 return (s); \
252 } while (0)
254 for (i = 1; i < argc; ++i) {
255 char *key, *value;
257 key = argv[i];
258 value = strchr (argv[i], (int)'=');
260 if (! value) {
261 fprintf (stderr, "ERROR: flush: Invalid option ``%s''.\n", argv[i]);
262 BAIL_OUT (-1);
263 }
265 *value = '\0';
266 ++value;
268 if (strcasecmp (key, "timeout") == 0) {
269 char *endptr = NULL;
271 timeout = (int) strtol (value, &endptr, 0);
273 if (endptr == value) {
274 fprintf (stderr, "ERROR: Failed to parse timeout as number: %s.\n",
275 value);
276 BAIL_OUT (-1);
277 }
278 else if ((endptr != NULL) && (*endptr != '\0')) {
279 fprintf (stderr, "WARNING: Ignoring trailing garbage after timeout: "
280 "%s.\n", endptr);
281 }
282 }
283 else if (strcasecmp (key, "plugin") == 0) {
284 status = array_grow ((void *)&plugins, &plugins_num,
285 sizeof (*plugins));
286 if (status != 0)
287 BAIL_OUT (status);
289 plugins[plugins_num - 1] = value;
290 }
291 else if (strcasecmp (key, "identifier") == 0) {
292 status = array_grow ((void *)&identifiers, &identifiers_num,
293 sizeof (*identifiers));
294 if (status != 0)
295 BAIL_OUT (status);
297 memset (identifiers + (identifiers_num - 1), 0, sizeof (*identifiers));
298 status = parse_identifier (c, value,
299 identifiers + (identifiers_num - 1));
300 if (status != 0)
301 BAIL_OUT (status);
302 }
303 else {
304 fprintf (stderr, "ERROR: flush: Unknown option `%s'.\n", key);
305 BAIL_OUT (-1);
306 }
307 }
309 if (plugins_num == 0) {
310 status = array_grow ((void *)&plugins, &plugins_num, sizeof (*plugins));
311 if (status != 0)
312 BAIL_OUT (status);
314 assert (plugins_num == 1);
315 plugins[0] = NULL;
316 }
318 for (i = 0; i < plugins_num; ++i) {
319 if (identifiers_num == 0) {
320 status = lcc_flush (c, plugins[i], NULL, timeout);
321 if (status != 0)
322 fprintf (stderr, "ERROR: Failed to flush plugin `%s': %s.\n",
323 (plugins[i] == NULL) ? "(all)" : plugins[i], lcc_strerror (c));
324 }
325 else {
326 int j;
328 for (j = 0; j < identifiers_num; ++j) {
329 status = lcc_flush (c, plugins[i], identifiers + j, timeout);
330 if (status != 0) {
331 char id[1024];
333 lcc_identifier_to_string (c, id, sizeof (id), identifiers + j);
334 fprintf (stderr, "ERROR: Failed to flush plugin `%s', "
335 "identifier `%s': %s.\n",
336 (plugins[i] == NULL) ? "(all)" : plugins[i],
337 id, lcc_strerror (c));
338 }
339 }
340 }
341 }
343 BAIL_OUT (0);
344 #undef BAIL_OUT
345 } /* flush */
347 static int listval (lcc_connection_t *c, int argc, char **argv)
348 {
349 lcc_identifier_t *ret_ident = NULL;
350 size_t ret_ident_num = 0;
352 int status;
353 size_t i;
355 assert (strcasecmp (argv[0], "listval") == 0);
357 if (argc != 1) {
358 fprintf (stderr, "ERROR: listval: Does not accept any arguments.\n");
359 return (-1);
360 }
362 #define BAIL_OUT(s) \
363 do { \
364 if (ret_ident != NULL) \
365 free (ret_ident); \
366 ret_ident_num = 0; \
367 return (s); \
368 } while (0)
370 status = lcc_listval (c, &ret_ident, &ret_ident_num);
371 if (status != 0) {
372 fprintf (stderr, "ERROR: %s\n", lcc_strerror (c));
373 BAIL_OUT (status);
374 }
376 for (i = 0; i < ret_ident_num; ++i) {
377 char id[1024];
379 status = lcc_identifier_to_string (c, id, sizeof (id), ret_ident + i);
380 if (status != 0) {
381 fprintf (stderr, "ERROR: listval: Failed to convert returned "
382 "identifier to a string: %s\n", lcc_strerror (c));
383 continue;
384 }
386 printf ("%s\n", id);
387 }
388 BAIL_OUT (0);
389 #undef BAIL_OUT
390 } /* listval */
392 static int putval (lcc_connection_t *c, int argc, char **argv)
393 {
394 lcc_value_list_t vl = LCC_VALUE_LIST_INIT;
396 /* 64 ought to be enough for anybody ;-) */
397 value_t values[64];
398 int values_types[64];
399 size_t values_len = 0;
401 int status;
402 int i;
404 assert (strcasecmp (argv[0], "putval") == 0);
406 if (argc < 3) {
407 fprintf (stderr, "ERROR: putval: Missing identifier "
408 "and/or value list.\n");
409 return (-1);
410 }
412 vl.values = values;
413 vl.values_types = values_types;
415 status = parse_identifier (c, argv[1], &vl.identifier);
416 if (status != 0)
417 return (status);
419 for (i = 2; i < argc; ++i) {
420 char *tmp;
422 tmp = strchr (argv[i], (int)'=');
424 if (tmp != NULL) { /* option */
425 char *key = argv[i];
426 char *value = tmp;
428 *value = '\0';
429 ++value;
431 if (strcasecmp (key, "interval") == 0) {
432 char *endptr;
434 vl.interval = strtol (value, &endptr, 0);
436 if (endptr == value) {
437 fprintf (stderr, "ERROR: Failed to parse interval as number: %s.\n",
438 value);
439 return (-1);
440 }
441 else if ((endptr != NULL) && (*endptr != '\0')) {
442 fprintf (stderr, "WARNING: Ignoring trailing garbage after "
443 "interval: %s.\n", endptr);
444 }
445 }
446 else {
447 fprintf (stderr, "ERROR: putval: Unknown option `%s'.\n", key);
448 return (-1);
449 }
450 }
451 else { /* value list */
452 char *value;
454 tmp = strchr (argv[i], (int)':');
456 if (tmp == NULL) {
457 fprintf (stderr, "ERROR: putval: Invalid value list: %s.\n",
458 argv[i]);
459 return (-1);
460 }
462 *tmp = '\0';
463 ++tmp;
465 if (strcasecmp (argv[i], "N") == 0) {
466 vl.time = 0;
467 }
468 else {
469 char *endptr;
471 vl.time = strtol (argv[i], &endptr, 0);
473 if (endptr == argv[i]) {
474 fprintf (stderr, "ERROR: Failed to parse time as number: %s.\n",
475 argv[i]);
476 return (-1);
477 }
478 else if ((endptr != NULL) && (*endptr != '\0')) {
479 fprintf (stderr, "ERROR: Garbage after time: %s.\n", endptr);
480 return (-1);
481 }
482 }
484 values_len = 0;
485 value = tmp;
486 while (value != NULL) {
487 char *dot, *endptr;
489 tmp = strchr (value, (int)':');
491 if (tmp != NULL) {
492 *tmp = '\0';
493 ++tmp;
494 }
496 /* This is a bit of a hack, but parsing types.db just does not make
497 * much sense imho -- the server might have different types defined
498 * anyway. Also, lcc uses the type information for formatting the
499 * number only, so the real meaning does not matter. -tokkee */
500 dot = strchr (value, (int)'.');
501 endptr = NULL;
502 if (strcasecmp (value, "U") == 0) {
503 values[values_len].gauge = NAN;
504 values_types[values_len] = LCC_TYPE_GAUGE;
505 }
506 else if (dot) { /* floating point value */
507 values[values_len].gauge = strtod (value, &endptr);
508 values_types[values_len] = LCC_TYPE_GAUGE;
509 }
510 else { /* integer */
511 values[values_len].counter = (counter_t) strtoull (value, &endptr, 0);
512 values_types[values_len] = LCC_TYPE_COUNTER;
513 }
514 ++values_len;
516 if (endptr == value) {
517 fprintf (stderr, "ERROR: Failed to parse value as number: %s.\n",
518 argv[i]);
519 return (-1);
520 }
521 else if ((endptr != NULL) && (*endptr != '\0')) {
522 fprintf (stderr, "ERROR: Garbage after value: %s.\n", endptr);
523 return (-1);
524 }
526 value = tmp;
527 }
529 assert (values_len >= 1);
530 vl.values_len = values_len;
532 status = lcc_putval (c, &vl);
533 if (status != 0) {
534 fprintf (stderr, "ERROR: %s\n", lcc_strerror (c));
535 return (-1);
536 }
537 }
538 }
540 if (values_len == 0) {
541 fprintf (stderr, "ERROR: putval: Missing value list(s).\n");
542 return (-1);
543 }
544 return (0);
545 } /* putval */
547 int main (int argc, char **argv) {
548 char address[1024] = "unix:"DEFAULT_SOCK;
550 lcc_connection_t *c;
552 int status;
554 while (42) {
555 int opt;
557 opt = getopt (argc, argv, "s:h");
559 if (opt == -1)
560 break;
562 switch (opt) {
563 case 's':
564 snprintf (address, sizeof (address), "unix:%s", optarg);
565 address[sizeof (address) - 1] = '\0';
566 break;
567 case 'h':
568 exit_usage (argv[0], 0);
569 break;
570 default:
571 exit_usage (argv[0], 1);
572 }
573 }
575 if (optind >= argc) {
576 fprintf (stderr, "%s: missing command\n", argv[0]);
577 exit_usage (argv[0], 1);
578 }
580 c = NULL;
581 status = lcc_connect (address, &c);
582 if (status != 0) {
583 fprintf (stderr, "ERROR: Failed to connect to daemon at %s: %s.\n",
584 address, strerror (errno));
585 return (1);
586 }
588 if (strcasecmp (argv[optind], "getval") == 0)
589 status = getval (c, argc - optind, argv + optind);
590 else if (strcasecmp (argv[optind], "flush") == 0)
591 status = flush (c, argc - optind, argv + optind);
592 else if (strcasecmp (argv[optind], "listval") == 0)
593 status = listval (c, argc - optind, argv + optind);
594 else if (strcasecmp (argv[optind], "putval") == 0)
595 status = putval (c, argc - optind, argv + optind);
596 else {
597 fprintf (stderr, "%s: invalid command: %s\n", argv[0], argv[optind]);
598 return (1);
599 }
601 LCC_DESTROY (c);
603 if (status != 0)
604 return (status);
605 return (0);
606 } /* main */
608 /* vim: set sw=2 ts=2 tw=78 expandtab : */