3 struct plugind *pluginsd_root = NULL;
7 static inline int pluginsd_space(char c) {
21 static int pluginsd_split_words(char *str, char **words, int max_words) {
22 char *s = str, quote = 0;
25 // skip all white space
26 while(unlikely(pluginsd_space(*s))) s++;
29 if(unlikely(*s == '\'' || *s == '"')) {
30 quote = *s; // remember the quote
31 s++; // skip the quote
34 // store the first word
37 // while we have something
40 if(unlikely(*s == '\\' && s[1])) {
46 else if(unlikely(*s == quote)) {
53 else if(unlikely(quote == 0 && pluginsd_space(*s))) {
58 // skip all white space
59 while(likely(pluginsd_space(*s))) s++;
62 if(unlikely(*s == '\'' || *s == '"')) {
63 quote = *s; // remember the quote
64 s++; // skip the quote
67 // if we reached the end, stop
68 if(unlikely(!*s)) break;
70 // store the next word
71 if(likely(i < max_words)) words[i++] = s;
79 // terminate the words
81 while(likely(j < max_words)) words[j++] = NULL;
86 inline size_t pluginsd_process(RRDHOST *host, struct plugind *cd, FILE *fp, int trust_durations) {
87 int enabled = cd->enabled;
96 char line[PLUGINSD_LINE_MAX + 1];
98 char *words[MAX_WORDS] = { NULL };
99 uint32_t HOST_HASH = simple_hash("HOST");
100 uint32_t BEGIN_HASH = simple_hash("BEGIN");
101 uint32_t END_HASH = simple_hash("END");
102 uint32_t FLUSH_HASH = simple_hash("FLUSH");
103 uint32_t CHART_HASH = simple_hash("CHART");
104 uint32_t DIMENSION_HASH = simple_hash("DIMENSION");
105 uint32_t DISABLE_HASH = simple_hash("DISABLE");
113 if(unlikely(fileno(fp) == -1)) {
114 error("PLUGINSD: %s: file is not a valid stream.", cd->fullfilename);
119 if(unlikely(netdata_exit)) break;
121 char *r = fgets(line, PLUGINSD_LINE_MAX, fp);
123 error("PLUGINSD: %s : read failed.", cd->fullfilename);
127 if(unlikely(netdata_exit)) break;
129 line[PLUGINSD_LINE_MAX] = '\0';
131 // debug(D_PLUGINSD, "PLUGINSD: %s: %s", cd->filename, line);
133 int w = pluginsd_split_words(line, words, MAX_WORDS);
135 if(unlikely(!s || !*s || !w)) {
136 // debug(D_PLUGINSD, "PLUGINSD: empty line");
140 // debug(D_PLUGINSD, "PLUGINSD: words 0='%s' 1='%s' 2='%s' 3='%s' 4='%s' 5='%s' 6='%s' 7='%s' 8='%s' 9='%s'", words[0], words[1], words[2], words[3], words[4], words[5], words[6], words[7], words[8], words[9]);
142 if(likely(!simple_hash_strcmp(s, "SET", &hash))) {
143 char *dimension = words[1];
144 char *value = words[2];
146 if(unlikely(!dimension || !*dimension)) {
147 error("PLUGINSD: '%s' is requesting a SET on chart '%s', without a dimension. Disabling it.", cd->fullfilename, st->id);
152 if(unlikely(!value || !*value)) value = NULL;
155 error("PLUGINSD: '%s' is requesting a SET on dimension %s with value %s, without a BEGIN. Disabling it.", cd->fullfilename, dimension, value?value:"<nothing>");
160 if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) debug(D_PLUGINSD, "PLUGINSD: '%s' is setting dimension %s/%s to %s", cd->fullfilename, st->id, dimension, value?value:"<nothing>");
162 if(value) rrddim_set(st, dimension, strtoll(value, NULL, 0));
164 else if(likely(hash == BEGIN_HASH && !strcmp(s, "BEGIN"))) {
166 char *microseconds_txt = words[2];
169 error("PLUGINSD: '%s' is requesting a BEGIN without a chart id. Disabling it.", cd->fullfilename);
174 st = rrdset_find(host, id);
176 error("PLUGINSD: '%s' is requesting a BEGIN on chart '%s', which does not exist. Disabling it.", cd->fullfilename, id);
181 if(likely(st->counter_done)) {
182 usec_t microseconds = 0;
183 if(microseconds_txt && *microseconds_txt) microseconds = str2ull(microseconds_txt);
185 if(likely(microseconds)) {
187 rrdset_next_usec_unfiltered(st, microseconds);
189 rrdset_next_usec(st, microseconds);
191 else rrdset_next(st);
194 else if(likely(hash == END_HASH && !strcmp(s, "END"))) {
196 error("PLUGINSD: '%s' is requesting an END, without a BEGIN. Disabling it.", cd->fullfilename);
201 if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG))) debug(D_PLUGINSD, "PLUGINSD: '%s' is requesting an END on chart %s", cd->fullfilename, st->id);
208 else if(likely(hash == HOST_HASH && !strcmp(s, "HOST"))) {
209 char *guid = words[1];
210 char *hostname = words[2];
212 if(unlikely(!guid || !*guid)) {
213 error("PLUGINSD: '%s' is requesting a HOST, without a guid. Disabling it.", cd->fullfilename);
217 if(unlikely(!hostname || !*hostname)) {
218 error("PLUGINSD: '%s' is requesting a HOST, without a hostname. Disabling it.", cd->fullfilename);
223 host = rrdhost_find_or_create(hostname, guid);
225 else if(likely(hash == FLUSH_HASH && !strcmp(s, "FLUSH"))) {
226 debug(D_PLUGINSD, "PLUGINSD: '%s' is requesting a FLUSH", cd->fullfilename);
229 else if(likely(hash == CHART_HASH && !strcmp(s, "CHART"))) {
233 if((words[1]) != NULL && (words[2]) != NULL && strcmp(words[1], words[2]) == 0)
236 char *type = words[1];
239 id = strchr(type, '.');
240 if(likely(id)) { *id = '\0'; id++; }
242 char *name = words[2];
243 char *title = words[3];
244 char *units = words[4];
245 char *family = words[5];
246 char *context = words[6];
247 char *chart = words[7];
248 char *priority_s = words[8];
249 char *update_every_s = words[9];
251 if(unlikely(!type || !*type || !id || !*id)) {
252 error("PLUGINSD: '%s' is requesting a CHART, without a type.id. Disabling it.", cd->fullfilename);
258 if(likely(priority_s)) priority = str2i(priority_s);
260 int update_every = cd->update_every;
261 if(likely(update_every_s)) update_every = str2i(update_every_s);
262 if(unlikely(!update_every)) update_every = cd->update_every;
264 RRDSET_TYPE chart_type = RRDSET_TYPE_LINE;
265 if(unlikely(chart)) chart_type = rrdset_type_id(chart);
267 if(unlikely(noname || !name || !*name || strcasecmp(name, "NULL") == 0 || strcasecmp(name, "(NULL)") == 0)) name = NULL;
268 if(unlikely(!family || !*family)) family = NULL;
269 if(unlikely(!context || !*context)) context = NULL;
271 st = rrdset_find_bytype(host, type, id);
273 debug(D_PLUGINSD, "PLUGINSD: Creating chart type='%s', id='%s', name='%s', family='%s', context='%s', chart='%s', priority=%d, update_every=%d"
278 , rrdset_type_name(chart_type)
283 st = rrdset_create(host, type, id, name, family, context, title, units, priority, update_every, chart_type);
284 cd->update_every = update_every;
286 else debug(D_PLUGINSD, "PLUGINSD: Chart '%s' already exists. Not adding it again.", st->id);
288 else if(likely(hash == DIMENSION_HASH && !strcmp(s, "DIMENSION"))) {
290 char *name = words[2];
291 char *algorithm = words[3];
292 char *multiplier_s = words[4];
293 char *divisor_s = words[5];
294 char *options = words[6];
296 if(unlikely(!id || !*id)) {
297 error("PLUGINSD: '%s' is requesting a DIMENSION, without an id. Disabling it.", cd->fullfilename);
303 error("PLUGINSD: '%s' is requesting a DIMENSION, without a CHART. Disabling it.", cd->fullfilename);
309 if(multiplier_s && *multiplier_s) multiplier = strtol(multiplier_s, NULL, 0);
310 if(unlikely(!multiplier)) multiplier = 1;
313 if(likely(divisor_s && *divisor_s)) divisor = strtol(divisor_s, NULL, 0);
314 if(unlikely(!divisor)) divisor = 1;
316 if(unlikely(!algorithm || !*algorithm)) algorithm = "absolute";
318 if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG)))
319 debug(D_PLUGINSD, "PLUGINSD: Creating dimension in chart %s, id='%s', name='%s', algorithm='%s', multiplier=%ld, divisor=%ld, hidden='%s'"
323 , rrd_algorithm_name(rrd_algorithm_id(algorithm))
329 RRDDIM *rd = rrddim_find(st, id);
331 rd = rrddim_add(st, id, name, multiplier, divisor, rrd_algorithm_id(algorithm));
332 rd->flags = 0x00000000;
333 if(options && *options) {
334 if(strstr(options, "hidden") != NULL) rrddim_flag_set(rd, RRDDIM_FLAG_HIDDEN);
335 if(strstr(options, "noreset") != NULL) rrddim_flag_set(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS);
336 if(strstr(options, "nooverflow") != NULL) rrddim_flag_set(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS);
339 else if(unlikely(rrdset_flag_check(st, RRDSET_FLAG_DEBUG)))
340 debug(D_PLUGINSD, "PLUGINSD: dimension %s/%s already exists. Not adding it again.", st->id, id);
342 else if(unlikely(hash == DISABLE_HASH && !strcmp(s, "DISABLE"))) {
343 info("PLUGINSD: '%s' called DISABLE. Disabling it.", cd->fullfilename);
348 error("PLUGINSD: '%s' is sending command '%s' which is not known by netdata. Disabling it.", cd->fullfilename, s);
355 cd->enabled = enabled;
358 cd->successful_collections += count;
359 cd->serial_failures = 0;
362 cd->serial_failures++;
367 void *pluginsd_worker_thread(void *arg) {
368 struct plugind *cd = (struct plugind *)arg;
374 if(unlikely(netdata_exit)) break;
376 FILE *fp = mypopen(cd->cmd, &cd->pid);
378 error("Cannot popen(\"%s\", \"r\").", cd->cmd);
382 info("PLUGINSD: '%s' running on pid %d", cd->fullfilename, cd->pid);
384 count = pluginsd_process(localhost, cd, fp, 0);
385 error("PLUGINSD: plugin '%s' disconnected.", cd->fullfilename);
387 killpid(cd->pid, SIGTERM);
389 info("PLUGINSD: '%s' on pid %d stopped after %zu successful data collections (ENDs).", cd->fullfilename, cd->pid, count);
391 // get the return code
392 int code = mypclose(fp, cd->pid);
394 if(unlikely(netdata_exit)) break;
396 // the plugin reports failure
398 if(likely(!cd->successful_collections)) {
399 // nothing collected - disable it
400 error("PLUGINSD: '%s' exited with error code %d. Disabling it.", cd->fullfilename, code);
404 // we have collected something
406 if(likely(cd->serial_failures <= 10)) {
407 error("PLUGINSD: '%s' exited with error code %d, but has given useful output in the past (%zu times). %s", cd->fullfilename, code, cd->successful_collections, cd->enabled?"Waiting a bit before starting it again.":"Will not start it again - it is disabled.");
408 sleep((unsigned int) (cd->update_every * 10));
411 error("PLUGINSD: '%s' exited with error code %d, but has given useful output in the past (%zu times). We tried %zu times to restart it, but it failed to generate data. Disabling it.", cd->fullfilename, code, cd->successful_collections, cd->serial_failures);
417 // the plugin reports success
419 if(unlikely(!cd->successful_collections)) {
420 // we have collected nothing so far
422 if(likely(cd->serial_failures <= 10)) {
423 error("PLUGINSD: '%s' (pid %d) does not generate useful output but it reports success (exits with 0). %s.", cd->fullfilename, cd->pid, cd->enabled?"Waiting a bit before starting it again.":"Will not start it again - it is disabled.");
424 sleep((unsigned int) (cd->update_every * 10));
427 error("PLUGINSD: '%s' (pid %d) does not generate useful output, although it reports success (exits with 0), but we have tried %zu times to collect something. Disabling it.", cd->fullfilename, cd->pid, cd->serial_failures);
432 sleep((unsigned int) cd->update_every);
436 if(unlikely(!cd->enabled)) break;
439 info("PLUGINSD: '%s' thread exiting", cd->fullfilename);
446 void *pluginsd_main(void *ptr) {
447 struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
449 info("PLUGINS.D thread created with task id %d", gettid());
451 if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
452 error("Cannot set pthread cancel type to DEFERRED.");
454 if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
455 error("Cannot set pthread cancel state to ENABLE.");
457 int automatic_run = config_get_boolean("plugins", "enable running new plugins", 1);
458 int scan_frequency = (int) config_get_number("plugins", "check for new plugins every", 60);
460 struct dirent *file = NULL;
463 // enable the apps plugin by default
464 // config_get_boolean("plugins", "apps", 1);
466 if(scan_frequency < 1) scan_frequency = 1;
469 if(unlikely(netdata_exit)) break;
471 dir = opendir(netdata_configured_plugins_dir);
473 error("Cannot open directory '%s'.", netdata_configured_plugins_dir);
477 while(likely((file = readdir(dir)))) {
478 if(unlikely(netdata_exit)) break;
480 debug(D_PLUGINSD, "PLUGINSD: Examining file '%s'", file->d_name);
482 if(unlikely(strcmp(file->d_name, ".") == 0 || strcmp(file->d_name, "..") == 0)) continue;
484 int len = (int) strlen(file->d_name);
485 if(unlikely(len <= (int)PLUGINSD_FILE_SUFFIX_LEN)) continue;
486 if(unlikely(strcmp(PLUGINSD_FILE_SUFFIX, &file->d_name[len - (int)PLUGINSD_FILE_SUFFIX_LEN]) != 0)) {
487 debug(D_PLUGINSD, "PLUGINSD: File '%s' does not end in '%s'.", file->d_name, PLUGINSD_FILE_SUFFIX);
491 char pluginname[CONFIG_MAX_NAME + 1];
492 snprintfz(pluginname, CONFIG_MAX_NAME, "%.*s", (int)(len - PLUGINSD_FILE_SUFFIX_LEN), file->d_name);
493 int enabled = config_get_boolean("plugins", pluginname, automatic_run);
495 if(unlikely(!enabled)) {
496 debug(D_PLUGINSD, "PLUGINSD: plugin '%s' is not enabled", file->d_name);
500 // check if it runs already
501 for(cd = pluginsd_root ; cd ; cd = cd->next)
502 if(unlikely(strcmp(cd->filename, file->d_name) == 0)) break;
504 if(likely(cd && !cd->obsolete)) {
505 debug(D_PLUGINSD, "PLUGINSD: plugin '%s' is already running", cd->filename);
510 // allocate a new one, or use the obsolete one
512 cd = callocz(sizeof(struct plugind), 1);
514 snprintfz(cd->id, CONFIG_MAX_NAME, "plugin:%s", pluginname);
516 strncpyz(cd->filename, file->d_name, FILENAME_MAX);
517 snprintfz(cd->fullfilename, FILENAME_MAX, "%s/%s", netdata_configured_plugins_dir, cd->filename);
519 cd->enabled = enabled;
520 cd->update_every = (int) config_get_number(cd->id, "update every", localhost->rrd_update_every);
521 cd->started_t = now_realtime_sec();
524 snprintfz(cd->cmd, PLUGINSD_CMD_MAX, "exec %s %d %s", cd->fullfilename, cd->update_every, config_get(cd->id, "command options", def));
527 if(likely(pluginsd_root)) cd->next = pluginsd_root;
530 // it is not currently running
534 // spawn a new thread for it
535 if(unlikely(pthread_create(&cd->thread, NULL, pluginsd_worker_thread, cd) != 0))
536 error("PLUGINSD: failed to create new thread for plugin '%s'.", cd->filename);
538 else if(unlikely(pthread_detach(cd->thread) != 0))
539 error("PLUGINSD: Cannot request detach of newly created thread for plugin '%s'.", cd->filename);
545 sleep((unsigned int) scan_frequency);
549 info("PLUGINS.D thread exiting");
551 static_thread->enabled = 0;