diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2018-11-07 12:22:44 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2018-11-07 12:22:44 +0000 |
commit | 1e6c93250172946eeb38e94a92a1fd12c9d3011e (patch) | |
tree | 8ca5e16dfc7ad6b3bf2738ca0a48408a950f8f7e /src/rrdvar.c | |
parent | Update watch file (diff) | |
download | netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.tar.xz netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.zip |
Merging upstream version 1.11.0+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/rrdvar.c')
-rw-r--r-- | src/rrdvar.c | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/src/rrdvar.c b/src/rrdvar.c deleted file mode 100644 index 6936c36f1..000000000 --- a/src/rrdvar.c +++ /dev/null @@ -1,275 +0,0 @@ -#define NETDATA_HEALTH_INTERNALS -#include "common.h" - -// ---------------------------------------------------------------------------- -// RRDVAR management - -inline int rrdvar_fix_name(char *variable) { - int fixed = 0; - while(*variable) { - if (!isalnum(*variable) && *variable != '.' && *variable != '_') { - *variable++ = '_'; - fixed++; - } - else - variable++; - } - - return fixed; -} - -int rrdvar_compare(void* a, void* b) { - if(((RRDVAR *)a)->hash < ((RRDVAR *)b)->hash) return -1; - else if(((RRDVAR *)a)->hash > ((RRDVAR *)b)->hash) return 1; - else return strcmp(((RRDVAR *)a)->name, ((RRDVAR *)b)->name); -} - -static inline RRDVAR *rrdvar_index_add(avl_tree_lock *tree, RRDVAR *rv) { - RRDVAR *ret = (RRDVAR *)avl_insert_lock(tree, (avl *)(rv)); - if(ret != rv) - debug(D_VARIABLES, "Request to insert RRDVAR '%s' into index failed. Already exists.", rv->name); - - return ret; -} - -static inline RRDVAR *rrdvar_index_del(avl_tree_lock *tree, RRDVAR *rv) { - RRDVAR *ret = (RRDVAR *)avl_remove_lock(tree, (avl *)(rv)); - if(!ret) - error("Request to remove RRDVAR '%s' from index failed. Not Found.", rv->name); - - return ret; -} - -static inline RRDVAR *rrdvar_index_find(avl_tree_lock *tree, const char *name, uint32_t hash) { - RRDVAR tmp; - tmp.name = (char *)name; - tmp.hash = (hash)?hash:simple_hash(tmp.name); - - return (RRDVAR *)avl_search_lock(tree, (avl *)&tmp); -} - -inline void rrdvar_free(RRDHOST *host, avl_tree_lock *tree, RRDVAR *rv) { - (void)host; - - if(!rv) return; - - if(tree) { - debug(D_VARIABLES, "Deleting variable '%s'", rv->name); - if(unlikely(!rrdvar_index_del(tree, rv))) - error("RRDVAR: Attempted to delete variable '%s' from host '%s', but it is not found.", rv->name, host->hostname); - } - - if(rv->type == RRDVAR_TYPE_CALCULATED_ALLOCATED) - freez(rv->value); - - freez(rv->name); - freez(rv); -} - -inline RRDVAR *rrdvar_create_and_index(const char *scope, avl_tree_lock *tree, const char *name, RRDVAR_TYPE type, void *value) { - char *variable = strdupz(name); - rrdvar_fix_name(variable); - uint32_t hash = simple_hash(variable); - - RRDVAR *rv = rrdvar_index_find(tree, variable, hash); - if(unlikely(!rv)) { - debug(D_VARIABLES, "Variable '%s' not found in scope '%s'. Creating a new one.", variable, scope); - - rv = callocz(1, sizeof(RRDVAR)); - rv->name = variable; - rv->hash = hash; - rv->type = type; - rv->value = value; - - RRDVAR *ret = rrdvar_index_add(tree, rv); - if(unlikely(ret != rv)) { - debug(D_VARIABLES, "Variable '%s' in scope '%s' already exists", variable, scope); - freez(rv); - freez(variable); - rv = NULL; - } - else - debug(D_VARIABLES, "Variable '%s' created in scope '%s'", variable, scope); - } - else { - debug(D_VARIABLES, "Variable '%s' is already found in scope '%s'.", variable, scope); - - // already exists - freez(variable); - - // this is important - // it must return NULL - not the existing variable - or double-free will happen - rv = NULL; - } - - return rv; -} - -void rrdvar_free_remaining_variables(RRDHOST *host, avl_tree_lock *tree_lock) { - // FIXME: this is not bullet proof - avl should support some means to destroy it - // with a callback for each item already in the index - - RRDVAR *rv, *last = NULL; - while((rv = (RRDVAR *)tree_lock->avl_tree.root)) { - if(unlikely(rv == last)) { - error("RRDVAR: INTERNAL ERROR: Cannot cleanup tree of RRDVARs"); - break; - } - last = rv; - rrdvar_free(host, tree_lock, rv); - } -} - -// ---------------------------------------------------------------------------- -// CUSTOM HOST VARIABLES - -inline int rrdvar_callback_for_all_host_variables(RRDHOST *host, int (*callback)(void *rrdvar, void *data), void *data) { - return avl_traverse_lock(&host->rrdvar_root_index, callback, data); -} - -static RRDVAR *rrdvar_custom_variable_create(const char *scope, avl_tree_lock *tree_lock, const char *name) { - calculated_number *v = callocz(1, sizeof(calculated_number)); - *v = NAN; - - RRDVAR *rv = rrdvar_create_and_index(scope, tree_lock, name, RRDVAR_TYPE_CALCULATED_ALLOCATED, v); - if(unlikely(!rv)) { - free(v); - debug(D_VARIABLES, "Requested variable '%s' already exists - possibly 2 plugins are updating it at the same time.", name); - - char *variable = strdupz(name); - rrdvar_fix_name(variable); - uint32_t hash = simple_hash(variable); - - rv = rrdvar_index_find(tree_lock, variable, hash); - - freez(variable); - } - - return rv; -} - -RRDVAR *rrdvar_custom_host_variable_create(RRDHOST *host, const char *name) { - return rrdvar_custom_variable_create("host", &host->rrdvar_root_index, name); -} - -void rrdvar_custom_host_variable_set(RRDHOST *host, RRDVAR *rv, calculated_number value) { - if(rv->type != RRDVAR_TYPE_CALCULATED_ALLOCATED) - error("requested to set variable '%s' to value " CALCULATED_NUMBER_FORMAT " but the variable is not a custom one.", rv->name, value); - else { - calculated_number *v = rv->value; - if(*v != value) { - *v = value; - - // if the host is streaming, send this variable upstream immediately - rrdpush_sender_send_this_host_variable_now(host, rv); - } - } -} - -// ---------------------------------------------------------------------------- -// RRDVAR lookup - -static calculated_number rrdvar2number(RRDVAR *rv) { - switch(rv->type) { - case RRDVAR_TYPE_CALCULATED_ALLOCATED: - case RRDVAR_TYPE_CALCULATED: { - calculated_number *n = (calculated_number *)rv->value; - return *n; - } - - case RRDVAR_TYPE_TIME_T: { - time_t *n = (time_t *)rv->value; - return *n; - } - - case RRDVAR_TYPE_COLLECTED: { - collected_number *n = (collected_number *)rv->value; - return *n; - } - - case RRDVAR_TYPE_TOTAL: { - total_number *n = (total_number *)rv->value; - return *n; - } - - case RRDVAR_TYPE_INT: { - int *n = (int *)rv->value; - return *n; - } - - default: - error("I don't know how to convert RRDVAR type %u to calculated_number", rv->type); - return NAN; - } -} - -int health_variable_lookup(const char *variable, uint32_t hash, RRDCALC *rc, calculated_number *result) { - RRDSET *st = rc->rrdset; - if(!st) return 0; - - RRDHOST *host = st->rrdhost; - RRDVAR *rv; - - rv = rrdvar_index_find(&st->rrdvar_root_index, variable, hash); - if(rv) { - *result = rrdvar2number(rv); - return 1; - } - - rv = rrdvar_index_find(&st->rrdfamily->rrdvar_root_index, variable, hash); - if(rv) { - *result = rrdvar2number(rv); - return 1; - } - - rv = rrdvar_index_find(&host->rrdvar_root_index, variable, hash); - if(rv) { - *result = rrdvar2number(rv); - return 1; - } - - return 0; -} - -// ---------------------------------------------------------------------------- -// RRDVAR to JSON - -struct variable2json_helper { - BUFFER *buf; - size_t counter; -}; - -static int single_variable2json(void *entry, void *data) { - struct variable2json_helper *helper = (struct variable2json_helper *)data; - RRDVAR *rv = (RRDVAR *)entry; - calculated_number value = rrdvar2number(rv); - - if(unlikely(isnan(value) || isinf(value))) - buffer_sprintf(helper->buf, "%s\n\t\t\"%s\": null", helper->counter?",":"", rv->name); - else - buffer_sprintf(helper->buf, "%s\n\t\t\"%s\": %0.5" LONG_DOUBLE_MODIFIER, helper->counter?",":"", rv->name, (LONG_DOUBLE)value); - - helper->counter++; - - return 0; -} - -void health_api_v1_chart_variables2json(RRDSET *st, BUFFER *buf) { - RRDHOST *host = st->rrdhost; - - struct variable2json_helper helper = { - .buf = buf, - .counter = 0 - }; - - buffer_sprintf(buf, "{\n\t\"chart\": \"%s\",\n\t\"chart_name\": \"%s\",\n\t\"chart_context\": \"%s\",\n\t\"chart_variables\": {", st->id, st->name, st->context); - avl_traverse_lock(&st->rrdvar_root_index, single_variable2json, (void *)&helper); - buffer_sprintf(buf, "\n\t},\n\t\"family\": \"%s\",\n\t\"family_variables\": {", st->family); - helper.counter = 0; - avl_traverse_lock(&st->rrdfamily->rrdvar_root_index, single_variable2json, (void *)&helper); - buffer_sprintf(buf, "\n\t},\n\t\"host\": \"%s\",\n\t\"host_variables\": {", host->hostname); - helper.counter = 0; - avl_traverse_lock(&host->rrdvar_root_index, single_variable2json, (void *)&helper); - buffer_strcat(buf, "\n\t}\n}\n"); -} - |