From a5a585427624a93c9805a6ec4e8ed30b2805a36a Mon Sep 17 00:00:00 2001
From: Laurent Ulrich <laurent.ulrich@interieur.gouv.fr>
Date: Fri, 15 Sep 2023 23:35:16 +0200
Subject: [PATCH] Tables are now updated only if status of host changers

---
 hostchecker.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/hostchecker.go b/hostchecker.go
index 3ccbf5a..ff1a244 100644
--- a/hostchecker.go
+++ b/hostchecker.go
@@ -108,9 +108,11 @@ func main() {
 
 func checkGroup(name string, group Group, waitGroup *sync.WaitGroup, stopChannel chan bool) {
 	channels := make(map[string]chan int)
+  statusPerHost := make(map[string]int)
 	for _, host := range group.Hosts {
 		channel := make(chan int, 1)
 		channels[host] = channel
+    statusPerHost[host] = -1
 		waitGroup.Add(1)
 		go checkHost(channels[host], name, host, group.Check, waitGroup, stopChannel)
 	}
@@ -133,9 +135,13 @@ func checkGroup(name string, group Group, waitGroup *sync.WaitGroup, stopChannel
 					break
 				case status := <-channel:
 					if verbose > 1 {
+						log.Println("Status for ", host, "was", statusPerHost[host], "in group", name)
 						log.Println("Status for ", host, "is", status, "in group", name)
 					}
-					updateTables(host, status, group.Tables)
+          if statusPerHost[host] == -1 || statusPerHost[host] != status {
+            statusPerHost[host] = status
+					  updateTables(host, status, group.Tables)
+          }
 				default:
 					time.Sleep(100 * time.Millisecond)
 				}