Go app framework

pkg/otel/settings.go

@@ -0,0 +1,38 @@
+package otel
+
+import "time"
+
+type settings struct {
+	EnableStdoutExporter     bool
+	EnablePrometheusExporter bool
+	MetricExportInterval     time.Duration
+}
+
+type Option interface {
+	apply(*settings)
+}
+
+type enableStdoutExporter struct {
+	Option
+}
+
+func (setting enableStdoutExporter) apply(o *settings) {
+	o.EnableStdoutExporter = true
+}
+
+type enablePrometheusExporter struct {
+	Option
+}
+
+func (setting enablePrometheusExporter) apply(o *settings) {
+	o.EnablePrometheusExporter = true
+}
+
+type exportInterval struct {
+	Option
+	interval time.Duration
+}
+
+func (setting exportInterval) apply(o *settings) {
+	o.MetricExportInterval = setting.interval
+}