Support priority for host rules

Author: Emilien Kenler

collectd/checker.go

@@ -89,20 +89,25 @@ func (checker *Checker) checkRecord(record CollectdRecord) ([]shared.CheckResult
 			}
 
 			// Load host specific thresholds
+			priority := 0
 			for pattern, threshold := range rule.Check.HostThresholds {
 				if threshold.Regexp == nil {
 					continue
 				}
 
+				if threshold.Priority < priority {
+					continue
+				}
+
 				if !threshold.Regexp.MatchString(record.Host) {
 					continue
 				}
 
 				matchName = fmt.Sprintf("host:%s", pattern)
 
+				priority = threshold.Priority
 				critical = threshold.Critical
 				warning = threshold.Warning
-				break
 			}
 
 			// CRITICAL CHECK

config/config.go

@@ -24,6 +24,7 @@ const (
 type CheckThreshold struct {
 	WarningTpl  string               `hcl:"warning"`
 	CriticalTpl string               `hcl:"critical"`
+	Priority    int                  `hcl:"priority"`
 	Warning     hil.EvaluationResult `hcl:"-"`
 	Critical    hil.EvaluationResult `hcl:"-"`
 	Regexp      *regexp.Regexp       `hcl:"-"`