Implement segmentio identify (#743)

* feat: implement segmentio identify

* docs: update in code documentation for segmentio identify

Signed-off-by: João Vanzuita <joao@kubeshop.io>

internal/handlers/telemetry.go

@@ -20,7 +20,13 @@ func NewTelemetryHandler(service services.SegmentIoService) TelemetryHandler {
 // SendCountMetric validate and handles the metric request to the metric service.
 func (handler TelemetryHandler) SendCountMetric(telemetry domain.Telemetry) error {
 
-	err := handler.service.EnqueueCountMetric(
+	// the library handles it, and will call Identify once per command
+	err := handler.service.EnqueueIdentify(telemetry.Domain)
+	if err != nil {
+		return err
+	}
+
+	err = handler.service.EnqueueCountMetric(
 		telemetry.MetricName,
 		telemetry.Domain,
 		telemetry.CLIVersion,

internal/services/segment-io.go

@@ -33,3 +33,18 @@ func (service SegmentIoService) EnqueueCountMetric(metricName string, domain str
 
 	return nil
 }
+
+// EnqueueIdentify implements SegmentIO Identify https://segment.com/docs/connections/sources/catalog/libraries/server/go/
+func (service SegmentIoService) EnqueueIdentify(domain string) error {
+
+	// Enqueues a Identify event that will be sent asynchronously.
+	err := service.SegmentIOClient.Enqueue(analytics.Identify{
+		UserId: domain,
+		Type:   "identify",
+	})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}