Added Stringer() interface to observers so that they list correctly in debug

Author: jordigilh

internal/configuration/configuration.go

@@ -35,6 +35,7 @@ var (
 type Observer interface {
 	Init(configuration models.DeviceConfigurationMessage) error
 	Update(configuration models.DeviceConfigurationMessage) error
+	String() string
 }
 
 type Manager struct {

internal/configuration/configuration_mock.go

@@ -205,3 +205,7 @@ func (w *WorkloadsLogsTarget) WorkloadStarted(workloadName string, report []*pod
 		log.Error("Cannot start workload logs", err)
 	}
 }
+
+func (w *WorkloadsLogsTarget) String() string {
+	return "workload logs"
+}

internal/logs/workload.go

@@ -533,3 +533,7 @@ func toTimeSeries(series []Series) (timeSeries []prompb.TimeSeries, lowest time.
 	highest = fromDbTime(maxt)
 	return
 }
+
+func (r *RemoteWrite) String() string {
+	return "remote write"
+}

internal/metrics/remote_write.go

@@ -84,6 +84,10 @@ func (wrkM *WorkloadMetrics) WorkloadStarted(workloadName string, report []*podm
 	}
 }
 
+func (wrKM *WorkloadMetrics) String() string {
+	return "workload metrics"
+}
+
 func getWorkloadUrls(report *podman.PodReport, config *models.Workload) []string {
 	res := []string{}
 	metricsPath := config.Metrics.Path

internal/metrics/workload.go

@@ -170,3 +170,7 @@ func getDefaultMountOptions() string {
 	}
 	return fmt.Sprintf("gid=%s,uid=%s", group.Gid, usr.Uid)
 }
+
+func (m *Manager) String() string {
+	return "mount"
+}

internal/mount/mount.go

@@ -207,3 +207,7 @@ func (o *OS) updateGreenbootScripts() error {
 
 	return nil
 }
+
+func (o *OS) String() string {
+	return "rpm-ostree"
+}