fix: #1 - use differend endpoint if only default group

go.mod

@@ -1,6 +1,6 @@
 module github.com/akquinet/oxidized-exporter
 
-go 1.22
+go 1.23
 
 require (
 	github.com/prometheus/client_golang v1.19.0

oxidized/client.go

@@ -123,8 +123,15 @@ func (c *OxidizedClient) GetStatus() ([]DeviceStat, error) {
 	return stats, nil
 }
 
-func (c *OxidizedClient) GetConfigStats(group string, name string) (*ConfigStat, error) {
-	req, err := http.NewRequest("GET", c.Url+"/"+"node/fetch/"+group+"/"+name, nil)
+func (c *OxidizedClient) GetConfigStats(group string, name string, onlyDefaulGroup bool) (*ConfigStat, error) {
+	var req *http.Request
+	var err error
+
+	if onlyDefaulGroup {
+		req, err = http.NewRequest("GET", c.Url+"/"+"node/fetch/"+name, nil)
+	} else {
+		req, err = http.NewRequest("GET", c.Url+"/"+"node/fetch/"+group+"/"+name, nil)
+	}
 	if err != nil {
 		return nil, err
 	}
@@ -148,6 +155,22 @@ func (c *OxidizedClient) GetConfigStats(group string, name string) (*ConfigStat,
 	}, nil
 }
 
+// OnlyDefaultGroup returns true if the oxidized instance has only
+// devices of the default group
+func (o *OxidizedClient) OnlyDefaultGroup(devices []Device) bool {
+	groups := make(map[string]struct{})
+	for _, device := range devices {
+		groups[device.Group] = struct{}{}
+	}
+
+	if len(groups) == 1 {
+		if _, ok := groups["default"]; ok {
+			return true
+		}
+	}
+	return false
+}
+
 // ConvertOixidzedTimeTo8601 converts from 2019-11-19 14:00:00 CET
 // to UnixTimeStamp
 func ConvertOixidzedTimeToUnix(t string) (int64, error) {

oxidized/collector.go

@@ -81,6 +81,11 @@ func (c *OxidizedCollector) Collect(ch chan<- prometheus.Metric) {
 	// oxidized reachable
 	ch <- prometheus.MustNewConstMetric(c.oxidizedStatusMetric, prometheus.GaugeValue, 1)
 
+	onlyDefaultGroup := c.oxidizedClient.OnlyDefaultGroup(devices)
+	if onlyDefaultGroup {
+		slog.Info("Oxidized has only devices of group default")
+	}
+
 	semaphore := make(chan struct{}, 100)
 	wg := sync.WaitGroup{}
 	for _, device := range devices {
@@ -150,7 +155,7 @@ func (c *OxidizedCollector) Collect(ch chan<- prometheus.Metric) {
 				ch <- prometheus.MustNewConstMetric(c.deviceLastBackupStatusMetric, prometheus.GaugeValue, deviceLastBackupStatus, device.FullName, device.Name, device.Group, device.Model)
 			}
 
-			configStat, err := c.oxidizedClient.GetConfigStats(device.Group, device.Name)
+			configStat, err := c.oxidizedClient.GetConfigStats(device.Group, device.Name, onlyDefaultGroup)
 			if err != nil {
 				slog.Error("Could not get config stats", "error", err, "device", device.FullName)
 			} else {