1 files changed, 71 insertions, 0 deletions
diff --git a/database/rrdcalctemplate.c b/database/rrdcalctemplate.c
new file mode 100644
index 000000000..ba7e7ec94
--- /dev/null
+++ b/database/rrdcalctemplate.c
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#define NETDATA_HEALTH_INTERNALS
+#include "rrd.h"
+
+// ----------------------------------------------------------------------------
+// RRDCALCTEMPLATE management
+
+void rrdcalctemplate_link_matching(RRDSET *st) {
+    RRDHOST *host = st->rrdhost;
+    RRDCALCTEMPLATE *rt;
+
+    for(rt = host->templates; rt ; rt = rt->next) {
+        if(rt->hash_context == st->hash_context && !strcmp(rt->context, st->context)
+           && (!rt->family_pattern || simple_pattern_matches(rt->family_pattern, st->family))) {
+            RRDCALC *rc = rrdcalc_create(host, rt, st->id);
+            if(unlikely(!rc))
+                info("Health tried to create alarm from template '%s' on chart '%s' of host '%s', but it failed", rt->name, st->id, host->hostname);
+
+#ifdef NETDATA_INTERNAL_CHECKS
+            else if(rc->rrdset != st)
+                error("Health alarm '%s.%s' should be linked to chart '%s', but it is not", rc->chart?rc->chart:"NOCHART", rc->name, st->id);
+#endif
+        }
+    }
+}
+
+inline void rrdcalctemplate_free(RRDCALCTEMPLATE *rt) {
+    if(unlikely(!rt)) return;
+
+    expression_free(rt->calculation);
+    expression_free(rt->warning);
+    expression_free(rt->critical);
+
+    freez(rt->family_match);
+    simple_pattern_free(rt->family_pattern);
+
+    freez(rt->name);
+    freez(rt->exec);
+    freez(rt->recipient);
+    freez(rt->context);
+    freez(rt->source);
+    freez(rt->units);
+    freez(rt->info);
+    freez(rt->dimensions);
+    freez(rt);
+}
+
+inline void rrdcalctemplate_unlink_and_free(RRDHOST *host, RRDCALCTEMPLATE *rt) {
+    if(unlikely(!rt)) return;
+
+    debug(D_HEALTH, "Health removing template '%s' of host '%s'", rt->name, host->hostname);
+
+    if(host->templates == rt) {
+        host->templates = rt->next;
+    }
+    else {
+        RRDCALCTEMPLATE *t;
+        for (t = host->templates; t && t->next != rt; t = t->next ) ;
+        if(t) {
+            t->next = rt->next;
+            rt->next = NULL;
+        }
+        else
+            error("Cannot find RRDCALCTEMPLATE '%s' linked in host '%s'", rt->name, host->hostname);
+    }
+
+    rrdcalctemplate_free(rt);
+}
+
+