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;
}
