void kill_childs() { siginfo_t info; struct web_client *w; for(w = web_clients; w ; w = w->next) { debug(D_EXIT, "Stopping web client %s", w->client_ip); pthread_cancel(w->thread); pthread_join(w->thread, NULL); } int i; for (i = 0; static_threads[i].name != NULL ; i++) { if(static_threads[i].thread) { debug(D_EXIT, "Stopping %s thread", static_threads[i].name); pthread_cancel(*static_threads[i].thread); pthread_join(*static_threads[i].thread, NULL); static_threads[i].thread = NULL; } } if(tc_child_pid) { info("Killing tc-qos-helper procees"); if(killpid(tc_child_pid, SIGTERM) != -1) waitid(P_PID, (id_t) tc_child_pid, &info, WEXITED); } tc_child_pid = 0; struct plugind *cd; for(cd = pluginsd_root ; cd ; cd = cd->next) { debug(D_EXIT, "Stopping %s plugin thread", cd->id); pthread_cancel(cd->thread); pthread_join(cd->thread, NULL); if(cd->pid && !cd->obsolete) { debug(D_EXIT, "killing %s plugin process", cd->id); if(killpid(cd->pid, SIGTERM) != -1) waitid(P_PID, (id_t) cd->pid, &info, WEXITED); } } // if, for any reason there is any child exited // catch it here waitid(P_PID, 0, &info, WEXITED|WNOHANG); debug(D_EXIT, "All threads/childs stopped."); }
static void tc_main_cleanup(void *ptr) { struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr; static_thread->enabled = NETDATA_MAIN_THREAD_EXITING; info("cleaning up..."); if(tc_child_pid) { info("TC: killing with SIGTERM tc-qos-helper process %d", tc_child_pid); if(killpid(tc_child_pid, SIGTERM) != -1) { siginfo_t info; info("TC: waiting for tc plugin child process pid %d to exit...", tc_child_pid); waitid(P_PID, (id_t) tc_child_pid, &info, WEXITED); // info("TC: finished tc plugin child process pid %d.", tc_child_pid); } tc_child_pid = 0; } static_thread->enabled = NETDATA_MAIN_THREAD_EXITED; }
void *pluginsd_worker_thread(void *arg) { struct plugind *cd = (struct plugind *)arg; char line[PLUGINSD_LINE_MAX + 1]; #ifdef DETACH_PLUGINS_FROM_NETDATA unsigned long long usec = 0, susec = 0; struct timeval last = {0, 0} , now = {0, 0}; #endif char *words[MAX_WORDS] = { NULL }; uint32_t SET_HASH = simple_hash("SET"); uint32_t BEGIN_HASH = simple_hash("BEGIN"); uint32_t END_HASH = simple_hash("END"); uint32_t FLUSH_HASH = simple_hash("FLUSH"); uint32_t CHART_HASH = simple_hash("CHART"); uint32_t DIMENSION_HASH = simple_hash("DIMENSION"); uint32_t DISABLE_HASH = simple_hash("DISABLE"); #ifdef DETACH_PLUGINS_FROM_NETDATA uint32_t MYPID_HASH = simple_hash("MYPID"); uint32_t STOPPING_WAKE_ME_UP_PLEASE_HASH = simple_hash("STOPPING_WAKE_ME_UP_PLEASE"); #endif while(likely(1)) { if(unlikely(netdata_exit)) break; FILE *fp = mypopen(cd->cmd, &cd->pid); if(unlikely(!fp)) { error("Cannot popen(\"%s\", \"r\").", cd->cmd); break; } info("PLUGINSD: '%s' running on pid %d", cd->fullfilename, cd->pid); RRDSET *st = NULL; unsigned long long count = 0; char *s; uint32_t hash; while(likely(fgets(line, PLUGINSD_LINE_MAX, fp) != NULL)) { if(unlikely(netdata_exit)) break; line[PLUGINSD_LINE_MAX] = '\0'; // debug(D_PLUGINSD, "PLUGINSD: %s: %s", cd->filename, line); int w = pluginsd_split_words(line, words, MAX_WORDS); s = words[0]; if(unlikely(!s || !*s || !w)) { // debug(D_PLUGINSD, "PLUGINSD: empty line"); continue; } // 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]); hash = simple_hash(s); if(likely(hash == SET_HASH && !strcmp(s, "SET"))) { char *dimension = words[1]; char *value = words[2]; if(unlikely(!dimension || !*dimension)) { error("PLUGINSD: '%s' is requesting a SET on chart '%s', without a dimension. Disabling it.", cd->fullfilename, st->id); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } if(unlikely(!value || !*value)) value = NULL; if(unlikely(!st)) { error("PLUGINSD: '%s' is requesting a SET on dimension %s with value %s, without a BEGIN. Disabling it.", cd->fullfilename, dimension, value?value:"<nothing>"); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } if(unlikely(st->debug)) debug(D_PLUGINSD, "PLUGINSD: '%s' is setting dimension %s/%s to %s", cd->fullfilename, st->id, dimension, value?value:"<nothing>"); if(value) rrddim_set(st, dimension, atoll(value)); count++; } else if(likely(hash == BEGIN_HASH && !strcmp(s, "BEGIN"))) { char *id = words[1]; char *microseconds_txt = words[2]; if(unlikely(!id)) { error("PLUGINSD: '%s' is requesting a BEGIN without a chart id. Disabling it.", cd->fullfilename); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } st = rrdset_find(id); if(unlikely(!st)) { error("PLUGINSD: '%s' is requesting a BEGIN on chart '%s', which does not exist. Disabling it.", cd->fullfilename, id); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } if(likely(st->counter_done)) { unsigned long long microseconds = 0; if(microseconds_txt && *microseconds_txt) microseconds = strtoull(microseconds_txt, NULL, 10); if(microseconds) rrdset_next_usec(st, microseconds); else rrdset_next_plugins(st); } } else if(likely(hash == END_HASH && !strcmp(s, "END"))) { if(unlikely(!st)) { error("PLUGINSD: '%s' is requesting an END, without a BEGIN. Disabling it.", cd->fullfilename); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } if(unlikely(st->debug)) debug(D_PLUGINSD, "PLUGINSD: '%s' is requesting a END on chart %s", cd->fullfilename, st->id); rrdset_done(st); st = NULL; } else if(likely(hash == FLUSH_HASH && !strcmp(s, "FLUSH"))) { debug(D_PLUGINSD, "PLUGINSD: '%s' is requesting a FLUSH", cd->fullfilename); st = NULL; } else if(likely(hash == CHART_HASH && !strcmp(s, "CHART"))) { st = NULL; char *type = words[1]; char *id = NULL; if(likely(type)) { id = strchr(type, '.'); if(likely(id)) { *id = '\0'; id++; } } char *name = words[2]; char *title = words[3]; char *units = words[4]; char *family = words[5]; char *category = words[6]; char *chart = words[7]; char *priority_s = words[8]; char *update_every_s = words[9]; if(unlikely(!type || !*type || !id || !*id)) { error("PLUGINSD: '%s' is requesting a CHART, without a type.id. Disabling it.", cd->fullfilename); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } int priority = 1000; if(likely(priority_s)) priority = atoi(priority_s); int update_every = cd->update_every; if(likely(update_every_s)) update_every = atoi(update_every_s); if(unlikely(!update_every)) update_every = cd->update_every; int chart_type = RRDSET_TYPE_LINE; if(unlikely(chart)) chart_type = rrdset_type_id(chart); if(unlikely(!name || !*name)) name = NULL; if(unlikely(!family || !*family)) family = id; if(unlikely(!category || !*category)) category = type; st = rrdset_find_bytype(type, id); if(unlikely(!st)) { debug(D_PLUGINSD, "PLUGINSD: Creating chart type='%s', id='%s', name='%s', family='%s', category='%s', chart='%s', priority=%d, update_every=%d" , type, id , name?name:"" , family?family:"" , category?category:"" , rrdset_type_name(chart_type) , priority , update_every ); st = rrdset_create(type, id, name, family, title, units, priority, update_every, chart_type); cd->update_every = update_every; if(unlikely(strcmp(category, "none") == 0)) st->isdetail = 1; } else debug(D_PLUGINSD, "PLUGINSD: Chart '%s' already exists. Not adding it again.", st->id); } else if(likely(hash == DIMENSION_HASH && !strcmp(s, "DIMENSION"))) { char *id = words[1]; char *name = words[2]; char *algorithm = words[3]; char *multiplier_s = words[4]; char *divisor_s = words[5]; char *options = words[6]; if(unlikely(!id || !*id)) { error("PLUGINSD: '%s' is requesting a DIMENSION, without an id. Disabling it.", cd->fullfilename); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } if(unlikely(!st)) { error("PLUGINSD: '%s' is requesting a DIMENSION, without a CHART. Disabling it.", cd->fullfilename); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } long multiplier = 1; if(multiplier_s && *multiplier_s) multiplier = atol(multiplier_s); if(unlikely(!multiplier)) multiplier = 1; long divisor = 1; if(likely(divisor_s && *divisor_s)) divisor = atol(divisor_s); if(unlikely(!divisor)) divisor = 1; if(unlikely(!algorithm || !*algorithm)) algorithm = "absolute"; if(unlikely(st->debug)) debug(D_PLUGINSD, "PLUGINSD: Creating dimension in chart %s, id='%s', name='%s', algorithm='%s', multiplier=%ld, divisor=%ld, hidden='%s'" , st->id , id , name?name:"" , rrddim_algorithm_name(rrddim_algorithm_id(algorithm)) , multiplier , divisor , options?options:"" ); RRDDIM *rd = rrddim_find(st, id); if(unlikely(!rd)) { rd = rrddim_add(st, id, name, multiplier, divisor, rrddim_algorithm_id(algorithm)); rd->flags = 0x00000000; if(options && *options) { if(strstr(options, "hidden") != NULL) rd->flags |= RRDDIM_FLAG_HIDDEN; if(strstr(options, "noreset") != NULL) rd->flags |= RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS; if(strstr(options, "nooverflow") != NULL) rd->flags |= RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS; } } else if(unlikely(st->debug)) debug(D_PLUGINSD, "PLUGINSD: dimension %s/%s already exists. Not adding it again.", st->id, id); } else if(unlikely(hash == DISABLE_HASH && !strcmp(s, "DISABLE"))) { error("PLUGINSD: '%s' called DISABLE. Disabling it.", cd->fullfilename); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } #ifdef DETACH_PLUGINS_FROM_NETDATA else if(likely(hash == MYPID_HASH && !strcmp(s, "MYPID"))) { char *pid_s = words[1]; pid_t pid = atol(pid_s); if(likely(pid)) cd->pid = pid; debug(D_PLUGINSD, "PLUGINSD: %s is on pid %d", cd->id, cd->pid); } else if(likely(hash == STOPPING_WAKE_ME_UP_PLEASE_HASH && !strcmp(s, "STOPPING_WAKE_ME_UP_PLEASE"))) { error("PLUGINSD: '%s' (pid %d) called STOPPING_WAKE_ME_UP_PLEASE.", cd->fullfilename, cd->pid); gettimeofday(&now, NULL); if(unlikely(!usec && !susec)) { // our first run susec = cd->rrd_update_every * 1000000ULL; } else { // second+ run usec = usecdiff(&now, &last) - susec; error("PLUGINSD: %s last loop took %llu usec (worked for %llu, sleeped for %llu).\n", cd->fullfilename, usec + susec, usec, susec); if(unlikely(usec < (rrd_update_every * 1000000ULL / 2ULL))) susec = (rrd_update_every * 1000000ULL) - usec; else susec = rrd_update_every * 1000000ULL / 2ULL; } error("PLUGINSD: %s sleeping for %llu. Will kill with SIGCONT pid %d to wake it up.\n", cd->fullfilename, susec, cd->pid); usleep(susec); killpid(cd->pid, SIGCONT); bcopy(&now, &last, sizeof(struct timeval)); break; } #endif else { error("PLUGINSD: '%s' is sending command '%s' which is not known by netdata. Disabling it.", cd->fullfilename, s); cd->enabled = 0; killpid(cd->pid, SIGTERM); break; } } info("PLUGINSD: '%s' on pid %d stopped.", cd->fullfilename, cd->pid); // fgets() failed or loop broke int code = mypclose(fp, cd->pid); if(code == 1 || code == 127) { // 1 = DISABLE // 127 = cannot even run it error("PLUGINSD: '%s' (pid %d) exited with code %d. Disabling it.", cd->fullfilename, cd->pid, code); cd->enabled = 0; } if(netdata_exit) { cd->pid = 0; cd->enabled = 0; cd->obsolete = 1; return NULL; } if(unlikely(!count && cd->enabled)) { error("PLUGINSD: '%s' (pid %d) does not generate usefull output. Waiting a bit before starting it again.", cd->fullfilename, cd->pid); sleep((unsigned int) (cd->update_every * 10)); } cd->pid = 0; if(likely(cd->enabled)) sleep((unsigned int) cd->update_every); else break; } cd->obsolete = 1; return NULL; }