diff options
Diffstat (limited to 'src/plugin_tc.c')
| -rwxr-xr-x | src/plugin_tc.c | 737 |
1 files changed, 737 insertions, 0 deletions
diff --git a/src/plugin_tc.c b/src/plugin_tc.c new file mode 100755 index 00000000..f02b7078 --- /dev/null +++ b/src/plugin_tc.c @@ -0,0 +1,737 @@ +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/resource.h> + +#include "avl.h" +#include "log.h" +#include "common.h" +#include "appconfig.h" +#include "rrd.h" +#include "popen.h" +#include "plugin_tc.h" +#include "main.h" + +#define RRD_TYPE_TC "tc" +#define RRD_TYPE_TC_LEN strlen(RRD_TYPE_TC) + +// ---------------------------------------------------------------------------- +// /sbin/tc processor +// this requires the script plugins.d/tc-qos-helper.sh + +#define TC_LINE_MAX 1024 + +struct tc_class { + avl avl; + + char *id; + uint32_t hash; + + char *name; + + char *leafid; + uint32_t leaf_hash; + + char *parentid; + uint32_t parent_hash; + + char hasparent; + char isleaf; + unsigned long long bytes; + unsigned long long packets; + unsigned long long dropped; + unsigned long long overlimits; + unsigned long long requeues; + unsigned long long lended; + unsigned long long borrowed; + unsigned long long giants; + unsigned long long tokens; + unsigned long long ctokens; + + char updated; // updated bytes + char seen; // seen in the tc list (even without bytes) + + struct tc_class *next; + struct tc_class *prev; +}; + +struct tc_device { + avl avl; + + char *id; + uint32_t hash; + + char *name; + char *family; + + avl_tree classes_index; + + struct tc_class *classes; + + struct tc_device *next; + struct tc_device *prev; +}; + + +struct tc_device *tc_device_root = NULL; + +// ---------------------------------------------------------------------------- +// tc_device index + +static int tc_device_iterator(avl *a) { if(a) {}; return 0; } + +static int tc_device_compare(void* a, void* b) { + if(((struct tc_device *)a)->hash < ((struct tc_device *)b)->hash) return -1; + else if(((struct tc_device *)a)->hash > ((struct tc_device *)b)->hash) return 1; + else return strcmp(((struct tc_device *)a)->id, ((struct tc_device *)b)->id); +} + +avl_tree tc_device_root_index = { + NULL, + tc_device_compare, +#ifdef AVL_LOCK_WITH_MUTEX + PTHREAD_MUTEX_INITIALIZER +#else + PTHREAD_RWLOCK_INITIALIZER +#endif +}; + +#define tc_device_index_add(st) avl_insert(&tc_device_root_index, (avl *)(st)) +#define tc_device_index_del(st) avl_remove(&tc_device_root_index, (avl *)(st)) + +static struct tc_device *tc_device_index_find(const char *id, uint32_t hash) { + struct tc_device *result = NULL, tmp; + tmp.id = (char *)id; + tmp.hash = (hash)?hash:simple_hash(tmp.id); + + avl_search(&(tc_device_root_index), (avl *)&tmp, tc_device_iterator, (avl **)&result); + return result; +} + + +// ---------------------------------------------------------------------------- +// tc_class index + +static int tc_class_iterator(avl *a) { if(a) {}; return 0; } + +static int tc_class_compare(void* a, void* b) { + if(((struct tc_class *)a)->hash < ((struct tc_class *)b)->hash) return -1; + else if(((struct tc_class *)a)->hash > ((struct tc_class *)b)->hash) return 1; + else return strcmp(((struct tc_class *)a)->id, ((struct tc_class *)b)->id); +} + +#define tc_class_index_add(st, rd) avl_insert(&((st)->classes_index), (avl *)(rd)) +#define tc_class_index_del(st, rd) avl_remove(&((st)->classes_index), (avl *)(rd)) + +static struct tc_class *tc_class_index_find(struct tc_device *st, const char *id, uint32_t hash) { + struct tc_class *result = NULL, tmp; + tmp.id = (char *)id; + tmp.hash = (hash)?hash:simple_hash(tmp.id); + + avl_search(&(st->classes_index), (avl *)&tmp, tc_class_iterator, (avl **)&result); + return result; +} + +// ---------------------------------------------------------------------------- + +static void tc_class_free(struct tc_device *n, struct tc_class *c) { + 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); + + if(c->next) c->next->prev = c->prev; + if(c->prev) c->prev->next = c->next; + if(n->classes == c) { + if(c->next) n->classes = c->next; + else n->classes = c->prev; + } + + tc_class_index_del(n, c); + + if(c->id) free(c->id); + if(c->name) free(c->name); + if(c->leafid) free(c->leafid); + if(c->parentid) free(c->parentid); + + free(c); +} + +static void tc_device_classes_cleanup(struct tc_device *d) { + static int cleanup_every = 999; + + if(cleanup_every > 0) { + cleanup_every = (int) -config_get_number("plugin:tc", "cleanup unused classes every", 60); + if(cleanup_every > 0) cleanup_every = -cleanup_every; + if(cleanup_every == 0) cleanup_every = -1; + } + + struct tc_class *c = d->classes; + while(c) { + if(c->seen < cleanup_every) { + struct tc_class *nc = c->next; + tc_class_free(d, c); + c = nc; + } + else c = c->next; + + if(c) { + c->updated = 0; + c->seen--; + } + } +} + +static void tc_device_commit(struct tc_device *d) +{ + static int enable_new_interfaces = -1; + + if(enable_new_interfaces == -1) enable_new_interfaces = config_get_boolean("plugin:tc", "enable new interfaces detected at runtime", 1); + + // we only need to add leaf classes + struct tc_class *c, *x; + + // set all classes + for(c = d->classes ; c ; c = c->next) { + c->isleaf = 1; + c->hasparent = 0; + } + + // mark the classes as leafs and parents + for(c = d->classes ; c ; c = c->next) { + if(!c->updated) continue; + + for(x = d->classes ; x ; x = x->next) { + if(!x->updated) continue; + + if(c == x) continue; + + if(x->parentid && ( + ( c->hash == x->parent_hash && strcmp(c->id, x->parentid) == 0) || + (c->leafid && c->leaf_hash == x->parent_hash && strcmp(c->leafid, x->parentid) == 0))) { + // 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); + c->isleaf = 0; + x->hasparent = 1; + } + } + } + + // debugging: + /* + for ( c = d->classes ; c ; c = c->next) { + if(c->isleaf && c->hasparent) debug(D_TC_LOOP, "TC: Device %s, class %s, OK", d->name, c->id); + 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); + } + */ + + // we need at least a class + for(c = d->classes ; c ; c = c->next) { + // 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); + if(!c->updated) continue; + if(c->isleaf && c->hasparent) break; + } + if(!c) { + debug(D_TC_LOOP, "TC: Ignoring TC device '%s'. No leaf classes.", d->name?d->name:d->id); + tc_device_classes_cleanup(d); + return; + } + + char var_name[CONFIG_MAX_NAME + 1]; + snprintf(var_name, CONFIG_MAX_NAME, "qos for %s", d->id); + if(config_get_boolean("plugin:tc", var_name, enable_new_interfaces)) { + RRDSET *st = rrdset_find_bytype(RRD_TYPE_TC, d->id); + if(!st) { + debug(D_TC_LOOP, "TC: Creating new chart for device '%s'", d->name?d->name:d->id); + + 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); + + for(c = d->classes ; c ; c = c->next) { + if(!c->updated) continue; + + if(c->isleaf && c->hasparent) + rrddim_add(st, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL); + } + } + else { + debug(D_TC_LOOP, "TC: Updating chart for device '%s'", d->name?d->name:d->id); + rrdset_next_plugins(st); + + if(d->name && strcmp(d->id, d->name) != 0) rrdset_set_name(st, d->name); + } + + for(c = d->classes ; c ; c = c->next) { + if(!c->updated) continue; + + if(c->isleaf && c->hasparent) { + RRDDIM *rd = rrddim_find(st, c->id); + + if(!rd) { + debug(D_TC_LOOP, "TC: Adding to chart '%s', dimension '%s'", st->id, c->id, c->name); + + // new class, we have to add it + rd = rrddim_add(st, c->id, c->name?c->name:c->id, 8, 1024, RRDDIM_INCREMENTAL); + } + else debug(D_TC_LOOP, "TC: Updating chart '%s', dimension '%s'", st->id, c->id); + + rrddim_set_by_pointer(st, rd, c->bytes); + + // if it has a name, different to the id + if(c->name) { + // update the rrd dimension with the new name + debug(D_TC_LOOP, "TC: Setting chart '%s', dimension '%s' name to '%s'", st->id, rd->id, c->name); + rrddim_set_name(st, rd, c->name); + + free(c->name); + c->name = NULL; + } + } + } + rrdset_done(st); + } + + tc_device_classes_cleanup(d); +} + +static void tc_device_set_class_name(struct tc_device *d, char *id, char *name) +{ + struct tc_class *c = tc_class_index_find(d, id, 0); + if(c) { + if(c->name) free(c->name); + c->name = NULL; + + if(name && *name && strcmp(c->id, name) != 0) { + debug(D_TC_LOOP, "TC: Setting device '%s', class '%s' name to '%s'", d->id, id, name); + c->name = strdup(name); + } + } +} + +static void tc_device_set_device_name(struct tc_device *d, char *name) { + if(d->name) free(d->name); + d->name = NULL; + + if(name && *name && strcmp(d->id, name) != 0) { + debug(D_TC_LOOP, "TC: Setting device '%s' name to '%s'", d->id, name); + d->name = strdup(name); + } +} + +static void tc_device_set_device_family(struct tc_device *d, char *family) { + if(d->family) free(d->family); + d->family = NULL; + + if(family && *family && strcmp(d->id, family) != 0) { + debug(D_TC_LOOP, "TC: Setting device '%s' family to '%s'", d->id, family); + d->family = strdup(family); + } + // no need for null termination - it is already null +} + +static struct tc_device *tc_device_create(char *id) +{ + struct tc_device *d = tc_device_index_find(id, 0); + + if(!d) { + debug(D_TC_LOOP, "TC: Creating device '%s'", id); + + d = calloc(1, sizeof(struct tc_device)); + if(!d) { + fatal("Cannot allocate memory for tc_device %s", id); + return NULL; + } + + d->id = strdup(id); + d->hash = simple_hash(d->id); + + d->classes_index.root = NULL; + d->classes_index.compar = tc_class_compare; +#ifdef AVL_LOCK_WITH_MUTEX + pthread_mutex_init(&d->classes_index.mutex, NULL); +#else + pthread_rwlock_init(&d->classes_index.rwlock, NULL); +#endif + + tc_device_index_add(d); + + if(!tc_device_root) { + tc_device_root = d; + } + else { + d->next = tc_device_root; + tc_device_root->prev = d; + tc_device_root = d; + } + } + + return(d); +} + +static struct tc_class *tc_class_add(struct tc_device *n, char *id, char *parentid, char *leafid) +{ + struct tc_class *c = tc_class_index_find(n, id, 0); + + if(!c) { + debug(D_TC_LOOP, "TC: Creating in device '%s', class id '%s', parentid '%s', leafid '%s'", n->id, id, parentid?parentid:"", leafid?leafid:""); + + c = calloc(1, sizeof(struct tc_class)); + if(!c) { + fatal("Cannot allocate memory for tc class"); + return NULL; + } + + if(n->classes) n->classes->prev = c; + c->next = n->classes; + n->classes = c; + + c->id = strdup(id); + if(!c->id) { + free(c); + return NULL; + } + c->hash = simple_hash(c->id); + + if(parentid && *parentid) { + c->parentid = strdup(parentid); + c->parent_hash = simple_hash(c->parentid); + } + + if(leafid && *leafid) { + c->leafid = strdup(leafid); + c->leaf_hash = simple_hash(c->leafid); + } + + tc_class_index_add(n, c); + } + + c->seen = 1; + + return(c); +} + +static void tc_device_free(struct tc_device *n) +{ + if(n->next) n->next->prev = n->prev; + if(n->prev) n->prev->next = n->next; + if(tc_device_root == n) { + if(n->next) tc_device_root = n->next; + else tc_device_root = n->prev; + } + + tc_device_index_del(n); + + while(n->classes) tc_class_free(n, n->classes); + + if(n->id) free(n->id); + if(n->name) free(n->name); + if(n->family) free(n->family); + + free(n); +} + +static void tc_device_free_all() +{ + while(tc_device_root) + tc_device_free(tc_device_root); +} + +#define MAX_WORDS 20 + +static inline int tc_space(char c) { + switch(c) { + case ' ': + case '\t': + case '\r': + case '\n': + return 1; + + default: + return 0; + } +} + +static void tc_split_words(char *str, char **words, int max_words) { + char *s = str; + int i = 0; + + // skip all white space + while(tc_space(*s)) s++; + + // store the first word + words[i++] = s; + + // while we have something + while(*s) { + // if it is a space + if(tc_space(*s)) { + + // terminate the word + *s++ = '\0'; + + // skip all white space + while(tc_space(*s)) s++; + + // if we reached the end, stop + if(!*s) break; + + // store the next word + if(i < max_words) words[i++] = s; + else break; + } + else s++; + } + + // terminate the words + while(i < max_words) words[i++] = NULL; +} + +pid_t tc_child_pid = 0; +void *tc_main(void *ptr) +{ + if(ptr) { ; } + + info("TC thread created with task id %d", gettid()); + + if(pthread_setcanceltype(PTHREAD_CANCEL_DEFERRED, NULL) != 0) + error("Cannot set pthread cancel type to DEFERRED."); + + if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0) + error("Cannot set pthread cancel state to ENABLE."); + + struct rusage thread; + RRDSET *stcpu = NULL, *sttime = NULL; + + char buffer[TC_LINE_MAX+1] = ""; + char *words[MAX_WORDS] = { NULL }; + + uint32_t BEGIN_HASH = simple_hash("BEGIN"); + uint32_t END_HASH = simple_hash("END"); + uint32_t CLASS_HASH = simple_hash("class"); + uint32_t SENT_HASH = simple_hash("Sent"); + uint32_t LENDED_HASH = simple_hash("lended:"); + uint32_t TOKENS_HASH = simple_hash("tokens:"); + uint32_t SETDEVICENAME_HASH = simple_hash("SETDEVICENAME"); + uint32_t SETDEVICEGROUP_HASH = simple_hash("SETDEVICEGROUP"); + uint32_t SETCLASSNAME_HASH = simple_hash("SETCLASSNAME"); + uint32_t WORKTIME_HASH = simple_hash("WORKTIME"); +#ifdef DETACH_PLUGINS_FROM_NETDATA + uint32_t MYPID_HASH = simple_hash("MYPID"); +#endif + uint32_t first_hash; + + for(;1;) { + if(unlikely(netdata_exit)) break; + + FILE *fp; + struct tc_device *device = NULL; + struct tc_class *class = NULL; + + 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); + debug(D_TC_LOOP, "executing '%s'", buffer); + // fp = popen(buffer, "r"); + fp = mypopen(buffer, &tc_child_pid); + if(!fp) { + error("TC: Cannot popen(\"%s\", \"r\").", buffer); + pthread_exit(NULL); + return NULL; + } + + while(fgets(buffer, TC_LINE_MAX, fp) != NULL) { + if(unlikely(netdata_exit)) break; + + buffer[TC_LINE_MAX] = '\0'; + // debug(D_TC_LOOP, "TC: read '%s'", buffer); + + tc_split_words(buffer, words, MAX_WORDS); + if(!words[0] || !*words[0]) { + // debug(D_TC_LOOP, "empty line"); + continue; + } + // else debug(D_TC_LOOP, "First word is '%s'", words[0]); + + first_hash = simple_hash(words[0]); + + if(device && first_hash == CLASS_HASH && strcmp(words[0], "class") == 0) { + // 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]); + + // clear the last class + class = NULL; + + // words[1] : class type + // words[2] : N:XX + // words[3] : parent or root + if(words[1] && words[2] && words[3] && (strcmp(words[3], "parent") == 0 || strcmp(words[3], "root") == 0)) { + //char *type = words[1]; // the class: htb, fq_codel, etc + + // we are only interested for HTB classes + //if(strcmp(type, "htb") != 0) continue; + + char *id = words[2]; // the class major:minor + char *parent = words[3]; // 'parent' or 'root' + char *parentid = words[4]; // the parent's id + char *leaf = words[5]; // 'leaf' + char *leafid = words[6]; // leafid + + if(strcmp(parent, "root") == 0) { + parentid = NULL; + leafid = NULL; + } + else if(!leaf || strcmp(leaf, "leaf") != 0) + leafid = NULL; + + char leafbuf[20 + 1] = ""; + if(leafid && leafid[strlen(leafid) - 1] == ':') { + strncpy(leafbuf, leafid, 20 - 1); + strcat(leafbuf, "1"); + leafid = leafbuf; + } + + class = tc_class_add(device, id, parentid, leafid); + } + } + else if(first_hash == END_HASH && strcmp(words[0], "END") == 0) { + // debug(D_TC_LOOP, "END line"); + + if(device) { + if(pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL) != 0) + error("Cannot set pthread cancel state to DISABLE."); + + tc_device_commit(device); + // tc_device_free(device); + device = NULL; + class = NULL; + + if(pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL) != 0) + error("Cannot set pthread cancel state to ENABLE."); + } + } + else if(first_hash == BEGIN_HASH && strcmp(words[0], "BEGIN") == 0) { + // debug(D_TC_LOOP, "BEGIN line on device '%s'", words[1]); + + if(device) { + // tc_device_free(device); + device = NULL; + class = NULL; + } + + if(words[1] && *words[1]) { + device = tc_device_create(words[1]); + class = NULL; + } + } + else if(device && class && first_hash == SENT_HASH && strcmp(words[0], "Sent") == 0) { + // debug(D_TC_LOOP, "SENT line '%s'", words[1]); + if(words[1] && *words[1]) { + class->bytes = strtoull(words[1], NULL, 10); + class->updated = 1; + } + + if(words[3] && *words[3]) + class->packets = strtoull(words[3], NULL, 10); + + if(words[6] && *words[6]) + class->dropped = strtoull(words[6], NULL, 10); + + if(words[8] && *words[8]) + class->overlimits = strtoull(words[8], NULL, 10); + + if(words[10] && *words[10]) + class->requeues = strtoull(words[8], NULL, 10); + } + else if(device && class && class->updated && first_hash == LENDED_HASH && strcmp(words[0], "lended:") == 0) { + // debug(D_TC_LOOP, "LENDED line '%s'", words[1]); + if(words[1] && *words[1]) + class->lended = strtoull(words[1], NULL, 10); + + if(words[3] && *words[3]) + class->borrowed = strtoull(words[3], NULL, 10); + + if(words[5] && *words[5]) + class->giants = strtoull(words[5], NULL, 10); + } + else if(device && class && class->updated && first_hash == TOKENS_HASH && strcmp(words[0], "tokens:") == 0) { + // debug(D_TC_LOOP, "TOKENS line '%s'", words[1]); + if(words[1] && *words[1]) + class->tokens = strtoull(words[1], NULL, 10); + + if(words[3] && *words[3]) + class->ctokens = strtoull(words[3], NULL, 10); + } + else if(device && first_hash == SETDEVICENAME_HASH && strcmp(words[0], "SETDEVICENAME") == 0) { + // debug(D_TC_LOOP, "SETDEVICENAME line '%s'", words[1]); + if(words[1] && *words[1]) tc_device_set_device_name(device, words[1]); + } + else if(device && first_hash == SETDEVICEGROUP_HASH && strcmp(words[0], "SETDEVICEGROUP") == 0) { + // debug(D_TC_LOOP, "SETDEVICEGROUP line '%s'", words[1]); + if(words[1] && *words[1]) tc_device_set_device_family(device, words[1]); + } + else if(device && first_hash == SETCLASSNAME_HASH && strcmp(words[0], "SETCLASSNAME") == 0) { + // debug(D_TC_LOOP, "SETCLASSNAME line '%s' '%s'", words[1], words[2]); + char *id = words[1]; + char *path = words[2]; + if(id && *id && path && *path) tc_device_set_class_name(device, id, path); + } + else if(first_hash == WORKTIME_HASH && strcmp(words[0], "WORKTIME") == 0) { + // debug(D_TC_LOOP, "WORKTIME line '%s' '%s'", words[1], words[2]); + getrusage(RUSAGE_THREAD, &thread); + + if(!stcpu) stcpu = rrdset_find("netdata.plugin_tc_cpu"); + if(!stcpu) { + stcpu = rrdset_create("netdata", "plugin_tc_cpu", NULL, "tc.helper", NULL, "NetData TC CPU usage", "milliseconds/s", 135000, rrd_update_every, RRDSET_TYPE_STACKED); + rrddim_add(stcpu, "user", NULL, 1, 1000, RRDDIM_INCREMENTAL); + rrddim_add(stcpu, "system", NULL, 1, 1000, RRDDIM_INCREMENTAL); + } + else rrdset_next(stcpu); + + rrddim_set(stcpu, "user" , thread.ru_utime.tv_sec * 1000000ULL + thread.ru_utime.tv_usec); + rrddim_set(stcpu, "system", thread.ru_stime.tv_sec * 1000000ULL + thread.ru_stime.tv_usec); + rrdset_done(stcpu); + + if(!sttime) stcpu = rrdset_find("netdata.plugin_tc_time"); + if(!sttime) { + sttime = rrdset_create("netdata", "plugin_tc_time", NULL, "tc.helper", NULL, "NetData TC script execution", "milliseconds/run", 135001, rrd_update_every, RRDSET_TYPE_AREA); + rrddim_add(sttime, "run_time", "run time", 1, 1, RRDDIM_ABSOLUTE); + } + else rrdset_next(sttime); + + rrddim_set(sttime, "run_time", atoll(words[1])); + rrdset_done(sttime); + + } +#ifdef DETACH_PLUGINS_FROM_NETDATA + else if(first_hash == MYPID_HASH && (strcmp(words[0], "MYPID") == 0)) { + // debug(D_TC_LOOP, "MYPID line '%s'", words[1]); + char *id = words[1]; + pid_t pid = atol(id); + + if(pid) tc_child_pid = pid; + + debug(D_TC_LOOP, "TC: Child PID is %d.", tc_child_pid); + } +#endif + //else { + // debug(D_TC_LOOP, "IGNORED line"); + //} + } + mypclose(fp, tc_child_pid); + tc_child_pid = 0; + + if(device) { + // tc_device_free(device); + device = NULL; + class = NULL; + } + + if(netdata_exit) { + tc_device_free_all(); + pthread_exit(NULL); + return NULL; + } + + sleep((unsigned int) rrd_update_every); + } + + pthread_exit(NULL); + return NULL; +} + |