summaryrefslogtreecommitdiffstats
path: root/web/api/queries/countif/countif.c
diff options
context:
space:
mode:
Diffstat (limited to 'web/api/queries/countif/countif.c')
-rw-r--r--web/api/queries/countif/countif.c136
1 files changed, 136 insertions, 0 deletions
diff --git a/web/api/queries/countif/countif.c b/web/api/queries/countif/countif.c
new file mode 100644
index 0000000..369b20b
--- /dev/null
+++ b/web/api/queries/countif/countif.c
@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "countif.h"
+
+// ----------------------------------------------------------------------------
+// countif
+
+struct grouping_countif {
+ size_t (*comparison)(NETDATA_DOUBLE, NETDATA_DOUBLE);
+ NETDATA_DOUBLE target;
+ size_t count;
+ size_t matched;
+};
+
+static size_t countif_equal(NETDATA_DOUBLE v, NETDATA_DOUBLE target) {
+ return (v == target);
+}
+
+static size_t countif_notequal(NETDATA_DOUBLE v, NETDATA_DOUBLE target) {
+ return (v != target);
+}
+
+static size_t countif_less(NETDATA_DOUBLE v, NETDATA_DOUBLE target) {
+ return (v < target);
+}
+
+static size_t countif_lessequal(NETDATA_DOUBLE v, NETDATA_DOUBLE target) {
+ return (v <= target);
+}
+
+static size_t countif_greater(NETDATA_DOUBLE v, NETDATA_DOUBLE target) {
+ return (v > target);
+}
+
+static size_t countif_greaterequal(NETDATA_DOUBLE v, NETDATA_DOUBLE target) {
+ return (v >= target);
+}
+
+void grouping_create_countif(RRDR *r, const char *options __maybe_unused) {
+ struct grouping_countif *g = onewayalloc_callocz(r->internal.owa, 1, sizeof(struct grouping_countif));
+ r->internal.grouping_data = g;
+
+ if(options && *options) {
+ // skip any leading spaces
+ while(isspace(*options)) options++;
+
+ // find the comparison function
+ switch(*options) {
+ case '!':
+ options++;
+ if(*options != '=' && *options != ':')
+ options--;
+ g->comparison = countif_notequal;
+ break;
+
+ case '>':
+ options++;
+ if(*options == '=' || *options == ':') {
+ g->comparison = countif_greaterequal;
+ }
+ else {
+ options--;
+ g->comparison = countif_greater;
+ }
+ break;
+
+ case '<':
+ options++;
+ if(*options == '>') {
+ g->comparison = countif_notequal;
+ }
+ else if(*options == '=' || *options == ':') {
+ g->comparison = countif_lessequal;
+ }
+ else {
+ options--;
+ g->comparison = countif_less;
+ }
+ break;
+
+ default:
+ case '=':
+ case ':':
+ g->comparison = countif_equal;
+ break;
+ }
+ if(*options) options++;
+
+ // skip everything up to the first digit
+ while(isspace(*options)) options++;
+
+ g->target = str2ndd(options, NULL);
+ }
+ else {
+ g->target = 0.0;
+ g->comparison = countif_equal;
+ }
+}
+
+// resets when switches dimensions
+// so, clear everything to restart
+void grouping_reset_countif(RRDR *r) {
+ struct grouping_countif *g = (struct grouping_countif *)r->internal.grouping_data;
+ g->matched = 0;
+ g->count = 0;
+}
+
+void grouping_free_countif(RRDR *r) {
+ onewayalloc_freez(r->internal.owa, r->internal.grouping_data);
+ r->internal.grouping_data = NULL;
+}
+
+void grouping_add_countif(RRDR *r, NETDATA_DOUBLE value) {
+ struct grouping_countif *g = (struct grouping_countif *)r->internal.grouping_data;
+ g->matched += g->comparison(value, g->target);
+ g->count++;
+}
+
+NETDATA_DOUBLE grouping_flush_countif(RRDR *r, RRDR_VALUE_FLAGS *rrdr_value_options_ptr) {
+ struct grouping_countif *g = (struct grouping_countif *)r->internal.grouping_data;
+
+ NETDATA_DOUBLE value;
+
+ if(unlikely(!g->count)) {
+ value = 0.0;
+ *rrdr_value_options_ptr |= RRDR_VALUE_EMPTY;
+ }
+ else {
+ value = (NETDATA_DOUBLE)g->matched * 100 / (NETDATA_DOUBLE)g->count;
+ }
+
+ g->matched = 0;
+ g->count = 0;
+
+ return value;
+}