src/plugin_tc.c

   1 #ifdef HAVE_CONFIG_H
   2 #include <config.h>
   3 #endif
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <string.h>
   7 #include <sys/types.h>
   8 #include <sys/resource.h>
   9
  10 #include "avl.h"
  11 #include "log.h"
  12 #include "common.h"
  13 #include "appconfig.h"
  14 #include "rrd.h"
  15 #include "popen.h"
  16 #include "plugin_tc.h"
  17 #include "main.h"
  18 #include "../config.h"
  19
  20 #define RRD_TYPE_TC                                     "tc"
  21 #define RRD_TYPE_TC_LEN                         strlen(RRD_TYPE_TC)
  22
  23 // ----------------------------------------------------------------------------
  24 // /sbin/tc processor
  25 // this requires the script plugins.d/tc-qos-helper.sh
  26
  27 #define TC_LINE_MAX 1024
  28
  29 struct tc_class {
  30         avl avl;
  31
  32         char *id;
  33         uint32_t hash;
  34
  35         char *name;
  36
  37         char *leafid;
  38         uint32_t leaf_hash;
  39
  40         char *parentid;
  41         uint32_t parent_hash;
  42
  43         char hasparent;
  44         char isleaf;
  45         unsigned long long bytes;
  46         unsigned long long packets;
  47         unsigned long long dropped;
  48         unsigned long long overlimits;
  49         unsigned long long requeues;
  50         unsigned long long lended;
  51         unsigned long long borrowed;
  52         unsigned long long giants;
  53         unsigned long long tokens;
  54         unsigned long long ctokens;
  55
  56         char updated;   // updated bytes
  57         char seen;              // seen in the tc list (even without bytes)
  58
  59         struct tc_class *next;
  60         struct tc_class *prev;
  61 };
  62
  63 struct tc_device {
  64         avl avl;
  65
  66         char *id;
  67         uint32_t hash;
  68
  69         char *name;
  70         char *family;
  71
  72         avl_tree classes_index;
  73
  74         struct tc_class *classes;
  75
  76         struct tc_device *next;
  77         struct tc_device *prev;
  78 };
  79
  80
  81 struct tc_device *tc_device_root = NULL;
  82
  83 // ----------------------------------------------------------------------------
  84 // tc_device index
  85
  86 static int tc_device_iterator(avl *a) { if(a) {}; return 0; }
  87
  88 static int tc_device_compare(void* a, void* b) {
  89         if(((struct tc_device *)a)->hash < ((struct tc_device *)b)->hash) return -1;
  90         else if(((struct tc_device *)a)->hash > ((struct tc_device *)b)->hash) return 1;
  91         else return strcmp(((struct tc_device *)a)->id, ((struct tc_device *)b)->id);
  92 }
  93
  94 avl_tree tc_device_root_index = {
  95                 NULL,
  96                 tc_device_compare,
  97 #ifdef AVL_LOCK_WITH_MUTEX
  98                 PTHREAD_MUTEX_INITIALIZER
  99 #else
 100                 PTHREAD_RWLOCK_INITIALIZER
 101 #endif
 102 };
 103
 104 #define tc_device_index_add(st) avl_insert(&tc_device_root_index, (avl *)(st))
 105 #define tc_device_index_del(st) avl_remove(&tc_device_root_index, (avl *)(st))
 106
 107 static struct tc_device *tc_device_index_find(const char *id, uint32_t hash) {
 108         struct tc_device *result = NULL, tmp;
 109         tmp.id = (char *)id;
 110         tmp.hash = (hash)?hash:simple_hash(tmp.id);
 111
 112         avl_search(&(tc_device_root_index), (avl *)&tmp, tc_device_iterator, (avl **)&result);
 113         return result;
 114 }
 115
 116
 117 // ----------------------------------------------------------------------------
 118 // tc_class index
 119
 120 static int tc_class_iterator(avl *a) { if(a) {}; return 0; }
 121
 122 static int tc_class_compare(void* a, void* b) {
 123         if(((struct tc_class *)a)->hash < ((struct tc_class *)b)->hash) return -1;
 124         else if(((struct tc_class *)a)->hash > ((struct tc_class *)b)->hash) return 1;
 125         else return strcmp(((struct tc_class *)a)->id, ((struct tc_class *)b)->id);
 126 }
 127
 128 #define tc_class_index_add(st, rd) avl_insert(&((st)->classes_index), (avl *)(rd))
 129 #define tc_class_index_del(st, rd) avl_remove(&((st)->classes_index), (avl *)(rd))
 130
 131 static struct tc_class *tc_class_index_find(struct tc_device *st, const char *id, uint32_t hash) {
 132         struct tc_class *result = NULL, tmp;
 133         tmp.id = (char *)id;
 134         tmp.hash = (hash)?hash:simple_hash(tmp.id);
 135
 136         avl_search(&(st->classes_index), (avl *)&tmp, tc_class_iterator, (avl **)&result);
 137         return result;
 138 }
 139
 140 // ----------------------------------------------------------------------------
 141
 142 static void tc_class_free(struct tc_device *n, struct tc_class *c) {
 143         debug(D_TC_LOOP, "Removing from device '%s' class '%s', parentid '%s', leafid '%s', seen=%d", n->id, c->id, c->parentid?c->parentid:"", c->leafid?c->leafid:"", c->seen);
 144
 145         if(c->next) c->next->prev = c->prev;
 146         if(c->prev) c->prev->next = c->next;
 147         if(n->classes == c) {
 148                 if(c->next) n->classes = c->next;
 149                 else n->classes = c->prev;
 150         }
 151
 152         tc_class_index_del(n, c);
 153
 154         if(c->id) free(c->id);
 155         if(c->name) free(c->name);
 156         if(c->leafid) free(c->leafid);
 157         if(c->parentid) free(c->parentid);
 158
 159         free(c);
 160 }
 161
 162 static void tc_device_classes_cleanup(struct tc_device *d) {
 163         static int cleanup_every = 999;
 164
 165         if(cleanup_every > 0) {
 166                 cleanup_every = (int) -config_get_number("plugin:tc", "cleanup unused classes every", 60);
 167                 if(cleanup_every > 0) cleanup_every = -cleanup_every;
 168                 if(cleanup_every == 0) cleanup_every = -1;
 169         }
 170
 171         struct tc_class *c = d->classes;
 172         while(c) {
 173                 if(c->seen < cleanup_every) {
 174                         struct tc_class *nc = c->next;
 175                         tc_class_free(d, c);
 176                         c = nc;
 177                 }
 178                 else c = c->next;
 179
 180                 if(c) {
 181                         c->updated = 0;
 182                         c->seen--;
 183                 }
 184         }
 185 }
 186
 187 static void tc_device_commit(struct tc_device *d)
 188 {
 189         static int enable_new_interfaces = -1;
 190
 191         if(enable_new_interfaces == -1) enable_new_interfaces = config_get_boolean("plugin:tc", "enable new interfaces detected at runtime", 1);
 192
 193         // we only need to add leaf classes
 194         struct tc_class *c, *x;
 195
 196         // set all classes
 197         for(c = d->classes ; c ; c = c->next) {
 198                 c->isleaf = 1;
 199                 c->hasparent = 0;
 200         }
 201
 202         // mark the classes as leafs and parents
 203         for(c = d->classes ; c ; c = c->next) {
 204                 if(!c->updated) continue;
 205
 206                 for(x = d->classes ; x ; x = x->next) {
 207                         if(!x->updated) continue;
 208
 209                         if(c == x) continue;
 210
 211                         if(x->parentid && (
 212                                 (               c->hash      == x->parent_hash && strcmp(c->id,     x->parentid) == 0) ||
 213                                 (c->leafid   && c->leaf_hash == x->parent_hash && strcmp(c->leafid, x->parentid) == 0))) {
 214                                 // debug(D_TC_LOOP, "TC: In device '%s', class '%s' (leafid: '%s') has as leaf class '%s' (parentid: '%s').", d->name?d->name:d->id, c->name?c->name:c->id, c->leafid?c->leafid:c->id, x->name?x->name:x->id, x->parentid?x->parentid:x->id);
 215                                 c->isleaf = 0;
 216                                 x->hasparent = 1;
 217                         }
 218                 }
 219         }
 220
 221         // debugging:
 222         /*
 223         for ( c = d->classes ; c ; c = c->next) {
 224                 if(c->isleaf && c->hasparent) debug(D_TC_LOOP, "TC: Device %s, class %s, OK", d->name, c->id);
 225                 else debug(D_TC_LOOP, "TC: Device %s, class %s, IGNORE (isleaf: %d, hasparent: %d, parent: %s)", d->name, c->id, c->isleaf, c->hasparent, c->parentid);
 226         }
 227         */
 228
 229         // we need at least a class
 230         for(c = d->classes ; c ; c = c->next) {
 231                 // debug(D_TC_LOOP, "TC: Device '%s', class '%s', isLeaf=%d, HasParent=%d, Seen=%d", d->name?d->name:d->id, c->name?c->name:c->id, c->isleaf, c->hasparent, c->seen);
 232                 if(!c->updated) continue;
 233                 if(c->isleaf && c->hasparent) break;
 234         }
 235         if(!c) {
 236                 debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. No leaf classes.", d->name?d->name:d->id);
 237                 tc_device_classes_cleanup(d);
 238                 return;
 239         }
 240
 241         char var_name[CONFIG_MAX_NAME + 1];
 242         snprintf(var_name, CONFIG_MAX_NAME, "qos for %s", d->id);
 243         if(config_get_boolean("plugin:tc", var_name, enable_new_interfaces)) {
 244                 RRDSET *st = rrdset_find_bytype(RRD_TYPE_TC, d->id);
 245                 if(!st) {
 246                         debug(D_TC_LOOP, "TC: Creating new chart for device '%s'", d->name?d->name:d->id);
 247
 248                         st = rrdset_create(RRD_TYPE_TC, d->id, d->name?d->name:d->id, d->family?d->family:d->id, RRD_TYPE_TC ".qos", "Class Usage", "kilobits/s", 7000, rrd_update_every, RRDSET_TYPE_STACKED);
 249
 250                         for(c = d->classes ; c ; c = c->next) {
 251                                 if(!c->updated) continue;
 252
 253                                 if(c->isleaf && c->hasparent)
 254                                         rrddim_add(st, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL);
 255                         }
 256                 }
 257                 else {
 258                         debug(D_TC_LOOP, "TC: Updating chart for device '%s'", d->name?d->name:d->id);
 259                         rrdset_next_plugins(st);
 260
 261                         if(d->name && strcmp(d->id, d->name) != 0) rrdset_set_name(st, d->name);
 262                 }
 263
 264                 for(c = d->classes ; c ; c = c->next) {
 265                         if(!c->updated) continue;
 266
 267                         if(c->isleaf && c->hasparent) {
 268                                 RRDDIM *rd = rrddim_find(st, c->id);
 269
 270                                 if(!rd) {
 271                                         debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s'", st->id, c->id, c->name);
 272
 273                                         // new class, we have to add it
 274                                         rd = rrddim_add(st, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL);
 275                                 }
 276                                 else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", st->id, c->id);
 277
 278                                 rrddim_set_by_pointer(st, rd, c->bytes);
 279
 280                                 // if it has a name, different to the id
 281                                 if(c->name) {
 282                                         // update the rrd dimension with the new name
 283                                         debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", st->id, rd->id, c->name);
 284                                         rrddim_set_name(st, rd, c->name);
 285
 286                                         free(c->name);
 287                                         c->name = NULL;
 288                                 }
 289                         }
 290                 }
 291                 rrdset_done(st);
 292         }
 293
 294         tc_device_classes_cleanup(d);
 295 }
 296
 297 static void tc_device_set_class_name(struct tc_device *d, char *id, char *name)
 298 {
 299         struct tc_class *c = tc_class_index_find(d, id, 0);
 300         if(c) {
 301                 if(c->name) free(c->name);
 302                 c->name = NULL;
 303
 304                 if(name && *name && strcmp(c->id, name) != 0) {
 305                         debug(D_TC_LOOP, "TC: Setting device '%s', class '%s' name to '%s'", d->id, id, name);
 306                         c->name = strdup(name);
 307                 }
 308         }
 309 }
 310
 311 static void tc_device_set_device_name(struct tc_device *d, char *name) {
 312         if(d->name) free(d->name);
 313         d->name = NULL;
 314
 315         if(name && *name && strcmp(d->id, name) != 0) {
 316                 debug(D_TC_LOOP, "TC: Setting device '%s' name to '%s'", d->id, name);
 317                 d->name = strdup(name);
 318         }
 319 }
 320
 321 static void tc_device_set_device_family(struct tc_device *d, char *family) {
 322         if(d->family) free(d->family);
 323         d->family = NULL;
 324
 325         if(family && *family && strcmp(d->id, family) != 0) {
 326                 debug(D_TC_LOOP, "TC: Setting device '%s' family to '%s'", d->id, family);
 327                 d->family = strdup(family);
 328         }
 329         // no need for null termination - it is already null
 330 }
 331
 332 static struct tc_device *tc_device_create(char *id)
 333 {
 334         struct tc_device *d = tc_device_index_find(id, 0);
 335
 336         if(!d) {
 337                 debug(D_TC_LOOP, "TC: Creating device '%s'", id);
 338
 339                 d = calloc(1, sizeof(struct tc_device));
 340                 if(!d) {
 341                         fatal("Cannot allocate memory for tc_device %s", id);
 342                         return NULL;
 343                 }
 344
 345                 d->id = strdup(id);
 346                 d->hash = simple_hash(d->id);
 347
 348                 d->classes_index.root = NULL;
 349                 d->classes_index.compar = tc_class_compare;
 350
 351                 int lock;
 352 #ifdef AVL_LOCK_WITH_MUTEX
 353                 lock = pthread_mutex_init(&d->classes_index.mutex, NULL);
 354 #else
 355                 lock = pthread_rwlock_init(&d->classes_index.rwlock, NULL);
 356 #endif
 357                 if(lock != 0)
 358                         fatal("Failed to initialize plugin_tc mutex/rwlock, return code %d.", lock);
 359
 360                 tc_device_index_add(d);
 361
 362                 if(!tc_device_root) {
 363                         tc_device_root = d;
 364                 }
 365                 else {
 366                         d->next = tc_device_root;
 367                         tc_device_root->prev = d;
 368                         tc_device_root = d;
 369                 }
 370         }
 371
 372         return(d);
 373 }
 374
 375 static struct tc_class *tc_class_add(struct tc_device *n, char *id, char *parentid, char *leafid)
 376 {
 377         struct tc_class *c = tc_class_index_find(n, id, 0);
 378
 379         if(!c) {
 380                 debug(D_TC_LOOP, "TC: Creating in device '%s', class id '%s', parentid '%s', leafid '%s'", n->id, id, parentid?parentid:"", leafid?leafid:"");
 381
 382                 c = calloc(1, sizeof(struct tc_class));
 383                 if(!c) {
 384                         fatal("Cannot allocate memory for tc class");
 385                         return NULL;
 386                 }
 387
 388                 if(n->classes) n->classes->prev = c;
 389                 c->next = n->classes;
 390                 n->classes = c;
 391
 392                 c->id = strdup(id);
 393                 if(!c->id) {
 394                         free(c);
 395                         return NULL;
 396                 }
 397                 c->hash = simple_hash(c->id);
 398
 399                 if(parentid && *parentid) {
 400                         c->parentid = strdup(parentid);
 401                         c->parent_hash = simple_hash(c->parentid);
 402                 }
 403
 404                 if(leafid && *leafid) {
 405                         c->leafid = strdup(leafid);
 406                         c->leaf_hash = simple_hash(c->leafid);
 407                 }
 408
 409                 tc_class_index_add(n, c);
 410         }
 411
 412         c->seen = 1;
 413
 414         return(c);
 415 }
 416
 417 static void tc_device_free(struct tc_device *n)
 418 {
 419         if(n->next) n->next->prev = n->prev;
 420         if(n->prev) n->prev->next = n->next;
 421         if(tc_device_root == n) {
 422                 if(n->next) tc_device_root = n->next;
 423                 else tc_device_root = n->prev;
 424         }
 425
 426         tc_device_index_del(n);
 427
 428         while(n->classes) tc_class_free(n, n->classes);
 429
 430         if(n->id) free(n->id);
 431         if(n->name) free(n->name);
 432         if(n->family) free(n->family);
 433
 434         free(n);
 435 }
 436
 437 static void tc_device_free_all()
 438 {
 439         while(tc_device_root)
 440                 tc_device_free(tc_device_root);
 441 }
 442
 443 #define MAX_WORDS 20
 444
 445 static inline int tc_space(char c) {
 446         switch(c) {
 447         case ' ':
 448         case '\t':
 449         case '\r':
 450         case '\n':
 451                 return 1;
 452
 453         default:
 454                 return 0;
 455         }
 456 }
 457
 458 static void tc_split_words(char *str, char **words, int max_words) {
 459         char *s = str;
 460         int i = 0;
 461
 462         // skip all white space
 463         while(tc_space(*s)) s++;
 464
 465         // store the first word
 466         words[i++] = s;
 467
 468         // while we have something
 469         while(*s) {
 470                 // if it is a space
 471                 if(tc_space(*s)) {
 472
 473                         // terminate the word
 474                         *s++ = '\0';
 475
 476                         // skip all white space
 477                         while(tc_space(*s)) s++;
 478
 479                         // if we reached the end, stop
 480                         if(!*s) break;
 481
 482                         // store the next word
 483                         if(i < max_words) words[i++] = s;
 484                         else break;
 485                 }
 486                 else s++;
 487         }
 488
 489         // terminate the words
 490         while(i < max_words) words[i++] = NULL;
 491 }
 492
 493 pid_t tc_child_pid = 0;
 494 void *tc_main(void *ptr)
 495 {
 496         if(ptr) { ; }
 497
 498         info("TC thread created with task id %d", gettid());
 499
 500         if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0)
 501                 error("Cannot set pthread cancel type to DEFERRED.");
 502
 503         if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 504                 error("Cannot set pthread cancel state to ENABLE.");
 505
 506         struct rusage thread;
 507         RRDSET *stcpu = NULL, *sttime = NULL;
 508
 509         char buffer[TC_LINE_MAX+1] = "";
 510         char *words[MAX_WORDS] = { NULL };
 511
 512         uint32_t BEGIN_HASH = simple_hash("BEGIN");
 513         uint32_t END_HASH = simple_hash("END");
 514         uint32_t CLASS_HASH = simple_hash("class");
 515         uint32_t SENT_HASH = simple_hash("Sent");
 516         uint32_t LENDED_HASH = simple_hash("lended:");
 517         uint32_t TOKENS_HASH = simple_hash("tokens:");
 518         uint32_t SETDEVICENAME_HASH = simple_hash("SETDEVICENAME");
 519         uint32_t SETDEVICEGROUP_HASH = simple_hash("SETDEVICEGROUP");
 520         uint32_t SETCLASSNAME_HASH = simple_hash("SETCLASSNAME");
 521         uint32_t WORKTIME_HASH = simple_hash("WORKTIME");
 522 #ifdef DETACH_PLUGINS_FROM_NETDATA
 523         uint32_t MYPID_HASH = simple_hash("MYPID");
 524 #endif
 525         uint32_t first_hash;
 526
 527         for(;1;) {
 528                 if(unlikely(netdata_exit)) break;
 529
 530                 FILE *fp;
 531                 struct tc_device *device = NULL;
 532                 struct tc_class *class = NULL;
 533
 534                 snprintf(buffer, TC_LINE_MAX, "exec %s %d", config_get("plugin:tc", "script to run to get tc values", PLUGINS_DIR "/tc-qos-helper.sh"), rrd_update_every);
 535                 debug(D_TC_LOOP, "executing '%s'", buffer);
 536                 // fp = popen(buffer, "r");
 537                 fp = mypopen(buffer, &tc_child_pid);
 538                 if(!fp) {
 539                         error("TC: Cannot popen(\"%s\", \"r\").", buffer);
 540                         pthread_exit(NULL);
 541                         return NULL;
 542                 }
 543
 544                 while(fgets(buffer, TC_LINE_MAX, fp) != NULL) {
 545                         if(unlikely(netdata_exit)) break;
 546
 547                         buffer[TC_LINE_MAX] = '\0';
 548                         // debug(D_TC_LOOP, "TC: read '%s'", buffer);
 549
 550                         tc_split_words(buffer, words, MAX_WORDS);
 551                         if(!words[0] || !*words[0]) {
 552                                 // debug(D_TC_LOOP, "empty line");
 553                                 continue;
 554                         }
 555                         // else debug(D_TC_LOOP, "First word is '%s'", words[0]);
 556
 557                         first_hash = simple_hash(words[0]);
 558
 559                         if(device && first_hash == CLASS_HASH && strcmp(words[0], "class") == 0) {
 560                                 // debug(D_TC_LOOP, "CLASS line on class id='%s', parent='%s', parentid='%s', leaf='%s', leafid='%s'", words[2], words[3], words[4], words[5], words[6]);
 561
 562                                 // clear the last class
 563                                 class = NULL;
 564
 565                                 // words[1] : class type
 566                                 // words[2] : N:XX
 567                                 // words[3] : parent or root
 568                                 if(words[1] && words[2] && words[3] && (strcmp(words[3], "parent") == 0 || strcmp(words[3], "root") == 0)) {
 569                                         //char *type     = words[1];  // the class: htb, fq_codel, etc
 570
 571                                         // we are only interested for HTB classes
 572                                         //if(strcmp(type, "htb") != 0) continue;
 573
 574                                         char *id       = words[2];      // the class major:minor
 575                                         char *parent   = words[3];      // 'parent' or 'root'
 576                                         char *parentid = words[4];      // the parent's id
 577                                         char *leaf     = words[5];      // 'leaf'
 578                                         char *leafid   = words[6];      // leafid
 579
 580                                         if(strcmp(parent, "root") == 0) {
 581                                                 parentid = NULL;
 582                                                 leafid = NULL;
 583                                         }
 584                                         else if(!leaf || strcmp(leaf, "leaf") != 0)
 585                                                 leafid = NULL;
 586
 587                                         char leafbuf[20 + 1] = "";
 588                                         if(leafid && leafid[strlen(leafid) - 1] == ':') {
 589                                                 strncpy(leafbuf, leafid, 20 - 1);
 590                                                 strcat(leafbuf, "1");
 591                                                 leafid = leafbuf;
 592                                         }
 593
 594                                         class = tc_class_add(device, id, parentid, leafid);
 595                                 }
 596                         }
 597                         else if(first_hash == END_HASH && strcmp(words[0], "END") == 0) {
 598                                 // debug(D_TC_LOOP, "END line");
 599
 600                                 if(device) {
 601                                         if(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL) != 0)
 602                                                 error("Cannot set pthread cancel state to DISABLE.");
 603
 604                                         tc_device_commit(device);
 605                                         // tc_device_free(device);
 606                                         device = NULL;
 607                                         class = NULL;
 608
 609                                         if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0)
 610                                                 error("Cannot set pthread cancel state to ENABLE.");
 611                                 }
 612                         }
 613                         else if(first_hash == BEGIN_HASH && strcmp(words[0], "BEGIN") == 0) {
 614                                 // debug(D_TC_LOOP, "BEGIN line on device '%s'", words[1]);
 615
 616                                 if(device) {
 617                                         // tc_device_free(device);
 618                                         device = NULL;
 619                                         class = NULL;
 620                                 }
 621
 622                                 if(words[1] && *words[1]) {
 623                                         device = tc_device_create(words[1]);
 624                                         class = NULL;
 625                                 }
 626                         }
 627                         else if(device && class && first_hash == SENT_HASH && strcmp(words[0], "Sent") == 0) {
 628                                 // debug(D_TC_LOOP, "SENT line '%s'", words[1]);
 629                                 if(words[1] && *words[1]) {
 630                                         class->bytes = strtoull(words[1], NULL, 10);
 631                                         class->updated = 1;
 632                                 }
 633
 634                                 if(words[3] && *words[3])
 635                                         class->packets = strtoull(words[3], NULL, 10);
 636
 637                                 if(words[6] && *words[6])
 638                                         class->dropped = strtoull(words[6], NULL, 10);
 639
 640                                 if(words[8] && *words[8])
 641                                         class->overlimits = strtoull(words[8], NULL, 10);
 642
 643                                 if(words[10] && *words[10])
 644                                         class->requeues = strtoull(words[8], NULL, 10);
 645                         }
 646                         else if(device && class && class->updated && first_hash == LENDED_HASH && strcmp(words[0], "lended:") == 0) {
 647                                 // debug(D_TC_LOOP, "LENDED line '%s'", words[1]);
 648                                 if(words[1] && *words[1])
 649                                         class->lended = strtoull(words[1], NULL, 10);
 650
 651                                 if(words[3] && *words[3])
 652                                         class->borrowed = strtoull(words[3], NULL, 10);
 653
 654                                 if(words[5] && *words[5])
 655                                         class->giants = strtoull(words[5], NULL, 10);
 656                         }
 657                         else if(device && class && class->updated && first_hash == TOKENS_HASH && strcmp(words[0], "tokens:") == 0) {
 658                                 // debug(D_TC_LOOP, "TOKENS line '%s'", words[1]);
 659                                 if(words[1] && *words[1])
 660                                         class->tokens = strtoull(words[1], NULL, 10);
 661
 662                                 if(words[3] && *words[3])
 663                                         class->ctokens = strtoull(words[3], NULL, 10);
 664                         }
 665                         else if(device && first_hash == SETDEVICENAME_HASH && strcmp(words[0], "SETDEVICENAME") == 0) {
 666                                 // debug(D_TC_LOOP, "SETDEVICENAME line '%s'", words[1]);
 667                                 if(words[1] && *words[1]) tc_device_set_device_name(device, words[1]);
 668                         }
 669                         else if(device && first_hash == SETDEVICEGROUP_HASH && strcmp(words[0], "SETDEVICEGROUP") == 0) {
 670                                 // debug(D_TC_LOOP, "SETDEVICEGROUP line '%s'", words[1]);
 671                                 if(words[1] && *words[1]) tc_device_set_device_family(device, words[1]);
 672                         }
 673                         else if(device && first_hash == SETCLASSNAME_HASH && strcmp(words[0], "SETCLASSNAME") == 0) {
 674                                 // debug(D_TC_LOOP, "SETCLASSNAME line '%s' '%s'", words[1], words[2]);
 675                                 char *id    = words[1];
 676                                 char *path  = words[2];
 677                                 if(id && *id && path && *path) tc_device_set_class_name(device, id, path);
 678                         }
 679                         else if(first_hash == WORKTIME_HASH && strcmp(words[0], "WORKTIME") == 0) {
 680                                 // debug(D_TC_LOOP, "WORKTIME line '%s' '%s'", words[1], words[2]);
 681                                 getrusage(RUSAGE_THREAD, &thread);
 682
 683                                 if(!stcpu) stcpu = rrdset_find("netdata.plugin_tc_cpu");
 684                                 if(!stcpu) {
 685                                         stcpu = rrdset_create("netdata", "plugin_tc_cpu", NULL, "tc.helper", NULL, "NetData TC CPU usage", "milliseconds/s", 135000, rrd_update_every, RRDSET_TYPE_STACKED);
 686                                         rrddim_add(stcpu, "user",  NULL,  1, 1000, RRDDIM_INCREMENTAL);
 687                                         rrddim_add(stcpu, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL);
 688                                 }
 689                                 else rrdset_next(stcpu);
 690
 691                                 rrddim_set(stcpu, "user"  , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec);
 692                                 rrddim_set(stcpu, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec);
 693                                 rrdset_done(stcpu);
 694
 695                                 if(!sttime) stcpu = rrdset_find("netdata.plugin_tc_time");
 696                                 if(!sttime) {
 697                                         sttime = rrdset_create("netdata", "plugin_tc_time", NULL, "tc.helper", NULL, "NetData TC script execution", "milliseconds/run", 135001, rrd_update_every, RRDSET_TYPE_AREA);
 698                                         rrddim_add(sttime, "run_time",  "run time",  1, 1, RRDDIM_ABSOLUTE);
 699                                 }
 700                                 else rrdset_next(sttime);
 701
 702                                 rrddim_set(sttime, "run_time", atoll(words[1]));
 703                                 rrdset_done(sttime);
 704
 705                         }
 706 #ifdef DETACH_PLUGINS_FROM_NETDATA
 707                         else if(first_hash == MYPID_HASH && (strcmp(words[0], "MYPID") == 0)) {
 708                                 // debug(D_TC_LOOP, "MYPID line '%s'", words[1]);
 709                                 char *id = words[1];
 710                                 pid_t pid = atol(id);
 711
 712                                 if(pid) tc_child_pid = pid;
 713
 714                                 debug(D_TC_LOOP, "TC: Child PID is %d.", tc_child_pid);
 715                         }
 716 #endif
 717                         //else {
 718                         //      debug(D_TC_LOOP, "IGNORED line");
 719                         //}
 720                 }
 721                 // fgets() failed or loop broke
 722                 int code = mypclose(fp, tc_child_pid);
 723                 tc_child_pid = 0;
 724
 725                 if(device) {
 726                         // tc_device_free(device);
 727                         device = NULL;
 728                         class = NULL;
 729                 }
 730
 731                 if(netdata_exit) {
 732                         tc_device_free_all();
 733                         pthread_exit(NULL);
 734                         return NULL;
 735                 }
 736
 737                 if(code == 1 || code == 127) {
 738                         // 1 = DISABLE
 739                         // 127 = cannot even run it
 740                         error("TC: tc-qos-helper.sh exited with code %d. Disabling it.", code);
 741
 742                         tc_device_free_all();
 743                         pthread_exit(NULL);
 744                         return NULL;
 745                 }
 746
 747                 sleep((unsigned int) rrd_update_every);
 748         }
 749
 750         pthread_exit(NULL);
 751         return NULL;
 752 }