src/plugins_d.c

   1 #include "common.h"
   2
   3 struct plugind *pluginsd_root = NULL;
   4
   5 #define MAX_WORDS 20
   6
   7 static inline int pluginsd_space(char c) {
   8     switch(c) {
   9     case ' ':
  10     case '\t':
  11     case '\r':
  12     case '\n':
  13     case '=':
  14         return 1;
  15
  16     default:
  17         return 0;
  18     }
  19 }
  20
  21 static int pluginsd_split_words(char *str, char **words, int max_words) {
  22     char *s = str, quote = 0;
  23     int i = 0, j;
  24
  25     // skip all white space
  26     while(unlikely(pluginsd_space(*s))) s++;
  27
  28     // check for quote
  29     if(unlikely(*s == '\'' || *s == '"')) {
  30         quote = *s; // remember the quote
  31         s++;        // skip the quote
  32     }
  33
  34     // store the first word
  35     words[i++] = s;
  36
  37     // while we have something
  38     while(likely(*s)) {
  39         // if it is escape
  40         if(unlikely(*s == '\\' && s[1])) {
  41             s += 2;
  42             continue;
  43         }
  44
  45         // if it is quote
  46         else if(unlikely(*s == quote)) {
  47             quote = 0;
  48             *s = ' ';
  49             continue;
  50         }
  51
  52         // if it is a space
  53         else if(unlikely(quote == 0 && pluginsd_space(*s))) {
  54
  55             // terminate the word
  56             *s++ = '\0';
  57
  58             // skip all white space
  59             while(likely(pluginsd_space(*s))) s++;
  60
  61             // check for quote
  62             if(unlikely(*s == '\'' || *s == '"')) {
  63                 quote = *s; // remember the quote
  64                 s++;        // skip the quote
  65             }
  66
  67             // if we reached the end, stop
  68             if(unlikely(!*s)) break;
  69
  70             // store the next word
  71             if(likely(i < max_words)) words[i++] = s;
  72             else break;
  73         }
  74
  75         // anything else
  76         else s++;
  77     }
  78
  79     // terminate the words
  80     j = i;
  81     while(likely(j < max_words)) words[j++] = NULL;
  82
  83     return i;
  84 }
  85
  86
  87 void *pluginsd_worker_thread(void *arg) {
  88     struct plugind *cd = (struct plugind *)arg;
  89     cd->obsolete = 0;
  90
  91     char line[PLUGINSD_LINE_MAX + 1];
  92
  93 #ifdef DETACH_PLUGINS_FROM_NETDATA
  94     usec_t usec = 0, susec = 0;
  95     struct timeval last = {0, 0} , now = {0, 0};
  96 #endif
  97
  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");
 106 #ifdef DETACH_PLUGINS_FROM_NETDATA
 107     uint32_t MYPID_HASH = simple_hash("MYPID");
 108     uint32_t STOPPING_WAKE_ME_UP_PLEASE_HASH = simple_hash("STOPPING_WAKE_ME_UP_PLEASE");
 109 #endif
 110
 111     size_t count = 0;
 112     RRDHOST *host = localhost;
 113
 114     for(;;) {
 115         if(unlikely(netdata_exit)) break;
 116
 117         FILE *fp = mypopen(cd->cmd, &cd->pid);
 118         if(unlikely(!fp)) {
 119             error("Cannot popen(\"%s\", \"r\").", cd->cmd);
 120             break;
 121         }
 122
 123         info("PLUGINSD: '%s' running on pid %d", cd->fullfilename, cd->pid);
 124
 125         RRDSET *st = NULL;
 126         uint32_t hash;
 127
 128         while(likely(fgets(line, PLUGINSD_LINE_MAX, fp) != NULL)) {
 129             if(unlikely(netdata_exit)) break;
 130
 131             line[PLUGINSD_LINE_MAX] = '\0';
 132
 133             // debug(D_PLUGINSD, "PLUGINSD: %s: %s", cd->filename, line);
 134
 135             int w = pluginsd_split_words(line, words, MAX_WORDS);
 136             char *s = words[0];
 137             if(unlikely(!s || !*s || !w)) {
 138                 // debug(D_PLUGINSD, "PLUGINSD: empty line");
 139                 continue;
 140             }
 141
 142             // 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]);
 143
 144             if(likely(!simple_hash_strcmp(s, "SET", &hash))) {
 145                 char *dimension = words[1];
 146                 char *value = words[2];
 147
 148                 if(unlikely(!dimension || !*dimension)) {
 149                     error("PLUGINSD: '%s' is requesting a SET on chart '%s', without a dimension. Disabling it.", cd->fullfilename, st->id);
 150                     cd->enabled = 0;
 151                     killpid(cd->pid, SIGTERM);
 152                     break;
 153                 }
 154
 155                 if(unlikely(!value || !*value)) value = NULL;
 156
 157                 if(unlikely(!st)) {
 158                     error("PLUGINSD: '%s' is requesting a SET on dimension %s with value %s, without a BEGIN. Disabling it.", cd->fullfilename, dimension, value?value:"<nothing>");
 159                     cd->enabled = 0;
 160                     killpid(cd->pid, SIGTERM);
 161                     break;
 162                 }
 163
 164                 if(unlikely(st->debug)) debug(D_PLUGINSD, "PLUGINSD: '%s' is setting dimension %s/%s to %s", cd->fullfilename, st->id, dimension, value?value:"<nothing>");
 165
 166                 if(value) rrddim_set(st, dimension, strtoll(value, NULL, 0));
 167             }
 168             else if(likely(hash == BEGIN_HASH && !strcmp(s, "BEGIN"))) {
 169                 char *id = words[1];
 170                 char *microseconds_txt = words[2];
 171
 172                 if(unlikely(!id)) {
 173                     error("PLUGINSD: '%s' is requesting a BEGIN without a chart id. Disabling it.", cd->fullfilename);
 174                     cd->enabled = 0;
 175                     killpid(cd->pid, SIGTERM);
 176                     break;
 177                 }
 178
 179                 st = rrdset_find(host, id);
 180                 if(unlikely(!st)) {
 181                     error("PLUGINSD: '%s' is requesting a BEGIN on chart '%s', which does not exist. Disabling it.", cd->fullfilename, id);
 182                     cd->enabled = 0;
 183                     killpid(cd->pid, SIGTERM);
 184                     break;
 185                 }
 186
 187                 if(likely(st->counter_done)) {
 188                     usec_t microseconds = 0;
 189                     if(microseconds_txt && *microseconds_txt) microseconds = str2ull(microseconds_txt);
 190                     if(microseconds) rrdset_next_usec(st, microseconds);
 191                     else rrdset_next(st);
 192                 }
 193             }
 194             else if(likely(hash == END_HASH && !strcmp(s, "END"))) {
 195                 if(unlikely(!st)) {
 196                     error("PLUGINSD: '%s' is requesting an END, without a BEGIN. Disabling it.", cd->fullfilename);
 197                     cd->enabled = 0;
 198                     killpid(cd->pid, SIGTERM);
 199                     break;
 200                 }
 201
 202                 if(unlikely(st->debug)) debug(D_PLUGINSD, "PLUGINSD: '%s' is requesting an END on chart %s", cd->fullfilename, st->id);
 203
 204                 rrdset_done(st);
 205                 st = NULL;
 206
 207                 count++;
 208             }
 209             else if(likely(hash == HOST_HASH && !strcmp(s, "HOST"))) {
 210                 char *guid = words[1];
 211                 char *hostname = words[2];
 212
 213                 if(unlikely(!guid || !*guid)) {
 214                     error("PLUGINSD: '%s' is requesting a HOST, without a guid. Disabling it.", cd->fullfilename);
 215                     cd->enabled = 0;
 216                     killpid(cd->pid, SIGTERM);
 217                     break;
 218                 }
 219                 if(unlikely(!hostname || !*hostname)) {
 220                     error("PLUGINSD: '%s' is requesting a HOST, without a hostname. Disabling it.", cd->fullfilename);
 221                     cd->enabled = 0;
 222                     killpid(cd->pid, SIGTERM);
 223                     break;
 224                 }
 225
 226                 host = rrdhost_find_or_create(hostname, guid);
 227             }
 228             else if(likely(hash == FLUSH_HASH && !strcmp(s, "FLUSH"))) {
 229                 debug(D_PLUGINSD, "PLUGINSD: '%s' is requesting a FLUSH", cd->fullfilename);
 230                 st = NULL;
 231             }
 232             else if(likely(hash == CHART_HASH && !strcmp(s, "CHART"))) {
 233                 int noname = 0;
 234                 st = NULL;
 235
 236                 if((words[1]) != NULL && (words[2]) != NULL && strcmp(words[1], words[2]) == 0)
 237                     noname = 1;
 238
 239                 char *type = words[1];
 240                 char *id = NULL;
 241                 if(likely(type)) {
 242                     id = strchr(type, '.');
 243                     if(likely(id)) { *id = '\0'; id++; }
 244                 }
 245                 char *name = words[2];
 246                 char *title = words[3];
 247                 char *units = words[4];
 248                 char *family = words[5];
 249                 char *context = words[6];
 250                 char *chart = words[7];
 251                 char *priority_s = words[8];
 252                 char *update_every_s = words[9];
 253
 254                 if(unlikely(!type || !*type || !id || !*id)) {
 255                     error("PLUGINSD: '%s' is requesting a CHART, without a type.id. Disabling it.", cd->fullfilename);
 256                     cd->enabled = 0;
 257                     killpid(cd->pid, SIGTERM);
 258                     break;
 259                 }
 260
 261                 int priority = 1000;
 262                 if(likely(priority_s)) priority = str2i(priority_s);
 263
 264                 int update_every = cd->update_every;
 265                 if(likely(update_every_s)) update_every = str2i(update_every_s);
 266                 if(unlikely(!update_every)) update_every = cd->update_every;
 267
 268                 RRDSET_TYPE chart_type = RRDSET_TYPE_LINE;
 269                 if(unlikely(chart)) chart_type = rrdset_type_id(chart);
 270
 271                 if(unlikely(noname || !name || !*name || strcasecmp(name, "NULL") == 0 || strcasecmp(name, "(NULL)") == 0)) name = NULL;
 272                 if(unlikely(!family || !*family)) family = NULL;
 273                 if(unlikely(!context || !*context)) context = NULL;
 274
 275                 st = rrdset_find_bytype(host, type, id);
 276                 if(unlikely(!st)) {
 277                     debug(D_PLUGINSD, "PLUGINSD: Creating chart type='%s', id='%s', name='%s', family='%s', context='%s', chart='%s', priority=%d, update_every=%d"
 278                         , type, id
 279                         , name?name:""
 280                         , family?family:""
 281                         , context?context:""
 282                         , rrdset_type_name(chart_type)
 283                         , priority
 284                         , update_every
 285                         );
 286
 287                     st = rrdset_create(type, id, name, family, context, title, units, priority, update_every, chart_type);
 288                     cd->update_every = update_every;
 289                 }
 290                 else debug(D_PLUGINSD, "PLUGINSD: Chart '%s' already exists. Not adding it again.", st->id);
 291             }
 292             else if(likely(hash == DIMENSION_HASH && !strcmp(s, "DIMENSION"))) {
 293                 char *id = words[1];
 294                 char *name = words[2];
 295                 char *algorithm = words[3];
 296                 char *multiplier_s = words[4];
 297                 char *divisor_s = words[5];
 298                 char *options = words[6];
 299
 300                 if(unlikely(!id || !*id)) {
 301                     error("PLUGINSD: '%s' is requesting a DIMENSION, without an id. Disabling it.", cd->fullfilename);
 302                     cd->enabled = 0;
 303                     killpid(cd->pid, SIGTERM);
 304                     break;
 305                 }
 306
 307                 if(unlikely(!st)) {
 308                     error("PLUGINSD: '%s' is requesting a DIMENSION, without a CHART. Disabling it.", cd->fullfilename);
 309                     cd->enabled = 0;
 310                     killpid(cd->pid, SIGTERM);
 311                     break;
 312                 }
 313
 314                 long multiplier = 1;
 315                 if(multiplier_s && *multiplier_s) multiplier = strtol(multiplier_s, NULL, 0);
 316                 if(unlikely(!multiplier)) multiplier = 1;
 317
 318                 long divisor = 1;
 319                 if(likely(divisor_s && *divisor_s)) divisor = strtol(divisor_s, NULL, 0);
 320                 if(unlikely(!divisor)) divisor = 1;
 321
 322                 if(unlikely(!algorithm || !*algorithm)) algorithm = "absolute";
 323
 324                 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'"
 325                     , st->id
 326                     , id
 327                     , name?name:""
 328                     , rrd_algorithm_name(rrd_algorithm_id(algorithm))
 329                     , multiplier
 330                     , divisor
 331                     , options?options:""
 332                     );
 333
 334                 RRDDIM *rd = rrddim_find(st, id);
 335                 if(unlikely(!rd)) {
 336                     rd = rrddim_add(st, id, name, multiplier, divisor, rrd_algorithm_id(algorithm));
 337                     rd->flags = 0x00000000;
 338                     if(options && *options) {
 339                         if(strstr(options, "hidden") != NULL) rrddim_flag_set(rd, RRDDIM_FLAG_HIDDEN);
 340                         if(strstr(options, "noreset") != NULL) rrddim_flag_set(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS);
 341                         if(strstr(options, "nooverflow") != NULL) rrddim_flag_set(rd, RRDDIM_FLAG_DONT_DETECT_RESETS_OR_OVERFLOWS);
 342                     }
 343                 }
 344                 else if(unlikely(st->debug)) debug(D_PLUGINSD, "PLUGINSD: dimension %s/%s already exists. Not adding it again.", st->id, id);
 345             }
 346             else if(unlikely(hash == DISABLE_HASH && !strcmp(s, "DISABLE"))) {
 347                 info("PLUGINSD: '%s' called DISABLE. Disabling it.", cd->fullfilename);
 348                 cd->enabled = 0;
 349                 killpid(cd->pid, SIGTERM);
 350                 break;
 351             }
 352 #ifdef DETACH_PLUGINS_FROM_NETDATA
 353             else if(likely(hash == MYPID_HASH && !strcmp(s, "MYPID"))) {
 354                 char *pid_s = words[1];
 355                 pid_t pid = strtod(pid_s, NULL, 0);
 356
 357                 if(likely(pid)) cd->pid = pid;
 358                 debug(D_PLUGINSD, "PLUGINSD: %s is on pid %d", cd->id, cd->pid);
 359             }
 360             else if(likely(hash == STOPPING_WAKE_ME_UP_PLEASE_HASH && !strcmp(s, "STOPPING_WAKE_ME_UP_PLEASE"))) {
 361                 error("PLUGINSD: '%s' (pid %d) called STOPPING_WAKE_ME_UP_PLEASE.", cd->fullfilename, cd->pid);
 362
 363                 now_realtime_timeval(&now);
 364                 if(unlikely(!usec && !susec)) {
 365                     // our first run
 366                     susec = cd->rrd_update_every * USEC_PER_SEC;
 367                 }
 368                 else {
 369                     // second+ run
 370                     usec = dt_usec(&now, &last) - susec;
 371                     error("PLUGINSD: %s last loop took %llu usec (worked for %llu, sleeped for %llu).\n", cd->fullfilename, usec + susec, usec, susec);
 372                     if(unlikely(usec < (rrd_update_every * USEC_PER_SEC / 2ULL))) susec = (rrd_update_every * USEC_PER_SEC) - usec;
 373                     else susec = rrd_update_every * USEC_PER_SEC / 2ULL;
 374                 }
 375
 376                 error("PLUGINSD: %s sleeping for %llu. Will kill with SIGCONT pid %d to wake it up.\n", cd->fullfilename, susec, cd->pid);
 377                 usleep(susec);
 378                 killpid(cd->pid, SIGCONT);
 379                 memmove(&last, &now, sizeof(struct timeval));
 380                 break;
 381             }
 382 #endif
 383             else {
 384                 error("PLUGINSD: '%s' is sending command '%s' which is not known by netdata. Disabling it.", cd->fullfilename, s);
 385                 cd->enabled = 0;
 386                 killpid(cd->pid, SIGTERM);
 387                 break;
 388             }
 389         }
 390         if(likely(count)) {
 391             cd->successful_collections += count;
 392             cd->serial_failures = 0;
 393         }
 394         else
 395             cd->serial_failures++;
 396
 397         info("PLUGINSD: '%s' on pid %d stopped after %zu successful data collections (ENDs).", cd->fullfilename, cd->pid, count);
 398
 399         // get the return code
 400         int code = mypclose(fp, cd->pid);
 401
 402         if(unlikely(netdata_exit)) break;
 403         else if(code != 0) {
 404             // the plugin reports failure
 405
 406             if(likely(!cd->successful_collections)) {
 407                 // nothing collected - disable it
 408                 error("PLUGINSD: '%s' exited with error code %d. Disabling it.", cd->fullfilename, code);
 409                 cd->enabled = 0;
 410             }
 411             else {
 412                 // we have collected something
 413
 414                 if(likely(cd->serial_failures <= 10)) {
 415                     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.");
 416                     sleep((unsigned int) (cd->update_every * 10));
 417                 }
 418                 else {
 419                     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);
 420                     cd->enabled = 0;
 421                 }
 422             }
 423         }
 424         else {
 425             // the plugin reports success
 426
 427             if(unlikely(!cd->successful_collections)) {
 428                 // we have collected nothing so far
 429
 430                 if(likely(cd->serial_failures <= 10)) {
 431                     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.");
 432                     sleep((unsigned int) (cd->update_every * 10));
 433                 }
 434                 else {
 435                     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);
 436                     cd->enabled = 0;
 437                 }
 438             }
 439             else
 440                 sleep((unsigned int) cd->update_every);
 441         }
 442         cd->pid = 0;
 443
 444         if(unlikely(!cd->enabled)) break;
 445     }
 446
 447     info("PLUGINSD: '%s' thread exiting", cd->fullfilename);
 448
 449     cd->obsolete = 1;
 450     pthread_exit(NULL);
 451     return NULL;
 452 }
 453
 454 void *pluginsd_main(void *ptr) {
 455     struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
 456
 457     info("PLUGINS.D thread created with task id %d", gettid());
 458
 459     if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
 460         error("Cannot set pthread cancel type to DEFERRED.");
 461
 462     if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 463         error("Cannot set pthread cancel state to ENABLE.");
 464
 465     int automatic_run = config_get_boolean("plugins", "enable running new plugins", 1);
 466     int scan_frequency = (int) config_get_number("plugins", "check for new plugins every", 60);
 467     DIR *dir = NULL;
 468     struct dirent *file = NULL;
 469     struct plugind *cd;
 470
 471     // enable the apps plugin by default
 472     // config_get_boolean("plugins", "apps", 1);
 473
 474     if(scan_frequency < 1) scan_frequency = 1;
 475
 476     for(;;) {
 477         if(unlikely(netdata_exit)) break;
 478
 479         dir = opendir(netdata_configured_plugins_dir);
 480         if(unlikely(!dir)) {
 481             error("Cannot open directory '%s'.", netdata_configured_plugins_dir);
 482             goto cleanup;
 483         }
 484
 485         while(likely((file = readdir(dir)))) {
 486             if(unlikely(netdata_exit)) break;
 487
 488             debug(D_PLUGINSD, "PLUGINSD: Examining file '%s'", file->d_name);
 489
 490             if(unlikely(strcmp(file->d_name, ".") == 0 || strcmp(file->d_name, "..") == 0)) continue;
 491
 492             int len = (int) strlen(file->d_name);
 493             if(unlikely(len <= (int)PLUGINSD_FILE_SUFFIX_LEN)) continue;
 494             if(unlikely(strcmp(PLUGINSD_FILE_SUFFIX, &file->d_name[len - (int)PLUGINSD_FILE_SUFFIX_LEN]) != 0)) {
 495                 debug(D_PLUGINSD, "PLUGINSD: File '%s' does not end in '%s'.", file->d_name, PLUGINSD_FILE_SUFFIX);
 496                 continue;
 497             }
 498
 499             char pluginname[CONFIG_MAX_NAME + 1];
 500             snprintfz(pluginname, CONFIG_MAX_NAME, "%.*s", (int)(len - PLUGINSD_FILE_SUFFIX_LEN), file->d_name);
 501             int enabled = config_get_boolean("plugins", pluginname, automatic_run);
 502
 503             if(unlikely(!enabled)) {
 504                 debug(D_PLUGINSD, "PLUGINSD: plugin '%s' is not enabled", file->d_name);
 505                 continue;
 506             }
 507
 508             // check if it runs already
 509             for(cd = pluginsd_root ; cd ; cd = cd->next)
 510                 if(unlikely(strcmp(cd->filename, file->d_name) == 0)) break;
 511
 512             if(likely(cd && !cd->obsolete)) {
 513                 debug(D_PLUGINSD, "PLUGINSD: plugin '%s' is already running", cd->filename);
 514                 continue;
 515             }
 516
 517             // it is not running
 518             // allocate a new one, or use the obsolete one
 519             if(unlikely(!cd)) {
 520                 cd = callocz(sizeof(struct plugind), 1);
 521
 522                 snprintfz(cd->id, CONFIG_MAX_NAME, "plugin:%s", pluginname);
 523
 524                 strncpyz(cd->filename, file->d_name, FILENAME_MAX);
 525                 snprintfz(cd->fullfilename, FILENAME_MAX, "%s/%s", netdata_configured_plugins_dir, cd->filename);
 526
 527                 cd->enabled = enabled;
 528                 cd->update_every = (int) config_get_number(cd->id, "update every", rrd_update_every);
 529                 cd->started_t = now_realtime_sec();
 530
 531                 char *def = "";
 532                 snprintfz(cd->cmd, PLUGINSD_CMD_MAX, "exec %s %d %s", cd->fullfilename, cd->update_every, config_get(cd->id, "command options", def));
 533
 534                 // link it
 535                 if(likely(pluginsd_root)) cd->next = pluginsd_root;
 536                 pluginsd_root = cd;
 537
 538                 // it is not currently running
 539                 cd->obsolete = 1;
 540
 541                 if(cd->enabled) {
 542                     // spawn a new thread for it
 543                     if(unlikely(pthread_create(&cd->thread, NULL, pluginsd_worker_thread, cd) != 0))
 544                         error("PLUGINSD: failed to create new thread for plugin '%s'.", cd->filename);
 545
 546                     else if(unlikely(pthread_detach(cd->thread) != 0))
 547                         error("PLUGINSD: Cannot request detach of newly created thread for plugin '%s'.", cd->filename);
 548                 }
 549             }
 550         }
 551
 552         closedir(dir);
 553         sleep((unsigned int) scan_frequency);
 554     }
 555
 556 cleanup:
 557     info("PLUGINS.D thread exiting");
 558
 559     static_thread->enabled = 0;
 560     pthread_exit(NULL);
 561     return NULL;
 562 }