From a8220ab2d293bb7f4b014b79d16b2fb05090fa93 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Feb 2021 12:45:55 +0100
Subject: Adding upstream version 1.29.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 database/rrdcalc.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 113 insertions(+), 6 deletions(-)

(limited to 'database/rrdcalc.c')

diff --git a/database/rrdcalc.c b/database/rrdcalc.c
index 9f16ce374..935ee9c05 100644
--- a/database/rrdcalc.c
+++ b/database/rrdcalc.c
@@ -108,10 +108,22 @@ static void rrdsetcalc_link(RRDSET *st, RRDCALC *rc) {
     }
 }
 
+static inline int rrdcalc_test_additional_restriction(RRDCALC *rc, RRDSET *st){
+    if (rc->module_match && !simple_pattern_matches(rc->module_pattern, st->module_name))
+        return 0;
+
+    if (rc->plugin_match && !simple_pattern_matches(rc->plugin_pattern, st->plugin_name))
+        return 0;
+
+    return 1;
+}
+
 static inline int rrdcalc_is_matching_this_rrdset(RRDCALC *rc, RRDSET *st) {
-    if(     (rc->hash_chart == st->hash      && !strcmp(rc->chart, st->id)) ||
-            (rc->hash_chart == st->hash_name && !strcmp(rc->chart, st->name)))
-        return 1;
+    if(((rc->hash_chart == st->hash      && !strcmp(rc->chart, st->id)) ||
+        (rc->hash_chart == st->hash_name && !strcmp(rc->chart, st->name))) &&
+        rrdcalc_test_additional_restriction(rc, st)) {
+            return 1;
+    }
 
     return 0;
 }
@@ -252,6 +264,9 @@ inline uint32_t rrdcalc_get_unique_id(RRDHOST *host, const char *chart, const ch
         }
     }
 
+    if (unlikely(!host->health_log.next_alarm_id))
+        host->health_log.next_alarm_id = (uint32_t)now_realtime_sec();
+
     return host->health_log.next_alarm_id++;
 }
 
@@ -307,7 +322,7 @@ inline void rrdcalc_add_to_host(RRDHOST *host, RRDCALC *rc) {
 
     if(rc->calculation) {
         rc->calculation->status = &rc->status;
-        rc->calculation->this = &rc->value;
+        rc->calculation->myself = &rc->value;
         rc->calculation->after = &rc->db_after;
         rc->calculation->before = &rc->db_before;
         rc->calculation->rrdcalc = rc;
@@ -315,7 +330,7 @@ inline void rrdcalc_add_to_host(RRDHOST *host, RRDCALC *rc) {
 
     if(rc->warning) {
         rc->warning->status = &rc->status;
-        rc->warning->this = &rc->value;
+        rc->warning->myself = &rc->value;
         rc->warning->after = &rc->db_after;
         rc->warning->before = &rc->db_before;
         rc->warning->rrdcalc = rc;
@@ -323,7 +338,7 @@ inline void rrdcalc_add_to_host(RRDHOST *host, RRDCALC *rc) {
 
     if(rc->critical) {
         rc->critical->status = &rc->status;
-        rc->critical->this = &rc->value;
+        rc->critical->myself = &rc->value;
         rc->critical->after = &rc->db_after;
         rc->critical->before = &rc->db_before;
         rc->critical->rrdcalc = rc;
@@ -559,6 +574,12 @@ void rrdcalc_free(RRDCALC *rc) {
     freez(rc->units);
     freez(rc->info);
     simple_pattern_free(rc->spdim);
+    freez(rc->labels);
+    simple_pattern_free(rc->splabels);
+    freez(rc->module_match);
+    simple_pattern_free(rc->module_pattern);
+    freez(rc->plugin_match);
+    simple_pattern_free(rc->plugin_pattern);
     freez(rc);
 }
 
@@ -603,6 +624,92 @@ void rrdcalc_unlink_and_free(RRDHOST *host, RRDCALC *rc) {
     rrdcalc_free(rc);
 }
 
+void rrdcalc_foreach_unlink_and_free(RRDHOST *host, RRDCALC *rc) {
+
+    if(unlikely(rc == host->alarms_with_foreach))
+        host->alarms_with_foreach = rc->next;
+    else {
+        RRDCALC *t;
+        for(t = host->alarms_with_foreach; t && t->next != rc; t = t->next) ;
+        if(t) {
+            t->next = rc->next;
+            rc->next = NULL;
+        }
+        else
+            error("Cannot unlink alarm '%s.%s' from host '%s': not found", rc->chart?rc->chart:"NOCHART", rc->name, host->hostname);
+    }
+
+    rrdcalc_free(rc);
+}
+
+static void rrdcalc_labels_unlink_alarm_loop(RRDHOST *host, RRDCALC *alarms) {
+    RRDCALC *rc = alarms;
+    while (rc) {
+        if (!rc->labels) {
+            rc = rc->next;
+            continue;
+        }
+
+        char cmp[CONFIG_FILE_LINE_MAX+1];
+        struct label *move = host->labels.head;
+        while(move) {
+            snprintf(cmp, CONFIG_FILE_LINE_MAX, "%s=%s", move->key, move->value);
+            if (simple_pattern_matches(rc->splabels, move->key) ||
+                simple_pattern_matches(rc->splabels, cmp)) {
+                break;
+            }
+
+            move = move->next;
+        }
+
+        RRDCALC *next = rc->next;
+        if(!move) {
+            info("Health configuration for alarm '%s' cannot be applied, because the host %s does not have the label(s) '%s'",
+                 rc->name,
+                 host->hostname,
+                 rc->labels);
+
+            if(host->alarms == alarms) {
+                rrdcalc_unlink_and_free(host, rc);
+            } else
+                rrdcalc_foreach_unlink_and_free(host, rc);
+
+        }
+
+        rc = next;
+    }
+}
+
+void rrdcalc_labels_unlink_alarm_from_host(RRDHOST *host) {
+    rrdhost_check_rdlock(host);
+    netdata_rwlock_rdlock(&host->labels.labels_rwlock);
+
+    rrdcalc_labels_unlink_alarm_loop(host, host->alarms);
+    rrdcalc_labels_unlink_alarm_loop(host, host->alarms_with_foreach);
+
+    netdata_rwlock_unlock(&host->labels.labels_rwlock);
+}
+
+void rrdcalc_labels_unlink() {
+    rrd_rdlock();
+
+    RRDHOST *host;
+    rrdhost_foreach_read(host) {
+        if (unlikely(!host->health_enabled))
+            continue;
+
+        if (host->labels.head) {
+            rrdhost_wrlock(host);
+
+            rrdcalc_labels_unlink_alarm_from_host(host);
+
+            rrdhost_unlock(host);
+        }
+    }
+
+    rrd_unlock();
+}
+
 // ----------------------------------------------------------------------------
 // Alarm
 
-- 
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