From ddc0053ce8eda6001df8de1b30cf2395c625846e Mon Sep 17 00:00:00 2001
From: Gibheer <gibheer+git@zero-knowledge.org>
Date: Tue, 20 Nov 2018 21:47:35 +0100
Subject: moncheck - add function to remove acknowledge

An acknowledge should be set to false when the alarm switches to an ok
state.
---
 cmd/moncheck/main.go | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/cmd/moncheck/main.go b/cmd/moncheck/main.go
index 82b3d1f..fbc2b57 100644
--- a/cmd/moncheck/main.go
+++ b/cmd/moncheck/main.go
@@ -131,7 +131,9 @@ func check(thread int, db *sql.DB, waitDuration time.Duration) {
 		}
 		msg := output.String()
 
-		if _, err := tx.Exec("update active_checks set next_time = now() + intval, states = $2 where check_id = $1", id, &states); err != nil {
+		if _, err := tx.Exec(`update active_checks
+set next_time = now() + intval, states = $2, msg = $3, acknowledged = case when $4 then false else acknowledged end
+where check_id = $1`, id, &states, &msg, states.ToOK()); err != nil {
 			log.Printf("[%d] could not update row '%d': %s", thread, id, err)
 			tx.Rollback()
 			continue
@@ -203,3 +205,18 @@ func (s *States) Add(state int) {
 	*s = append([]int{state}, vals[:statePos]...)
 	return
 }
+
+// ToOK returns true when the state returns from != 0 to 0.
+func (s *States) ToOK() bool {
+	vals := *s
+	if len(vals) == 0 {
+		return false
+	}
+	if len(vals) <= 1 {
+		return vals[0] == 0
+	}
+	if vals[0] == 0 && vals[1] > 0 {
+		return true
+	}
+	return false
+}
-- 
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