fix dep error (#110)

Author: xiangshen-dk

pkg/main.go

@@ -31,7 +31,7 @@ func main() {
 	// from Grafana to create different instances of SampleDatasource (per datasource
 	// ID). When datasource configuration changed Dispose method will be called and
 	// new datasource instance created using NewSampleDatasource factory.
-	if err := datasource.Manage("googlecloud-logging-datasource", plugin.NewCloudLoggingDatasource, datasource.ManageOpts{}); err != nil {
+	if err := datasource.Manage("googlecloud-logging-datasource", datasource.InstanceFactoryFunc(plugin.NewCloudLoggingDatasource), datasource.ManageOpts{}); err != nil {
 		log.DefaultLogger.Error("error running", "error", err.Error())
 		os.Exit(1)
 	}

pkg/plugin/plugin.go

@@ -78,7 +78,7 @@ type serviceAccountJSON struct {
 }
 
 // NewCloudLoggingDatasource creates a new datasource instance.
-func NewCloudLoggingDatasource(settings backend.DataSourceInstanceSettings) (instancemgmt.Instance, error) {
+func NewCloudLoggingDatasource(ctx context.Context, settings backend.DataSourceInstanceSettings) (instancemgmt.Instance, error) {
 	var conf config
 	if err := json.Unmarshal(settings.JSONData, &conf); err != nil {
 		return nil, fmt.Errorf("unmarshal: %w", err)