Initial cloud-services repo - gateway service + pkg modules

pkg/common/event.go

@@ -0,0 +1,31 @@
+package common
+
+import (
+	"encoding/json"
+
+	"github.com/pkg/errors"
+)
+
+// Event is the generic structure for events sent over Kafka
+type Event struct {
+	Topic   string  `json:"topic"`
+	Key     string  `json:"key"`
+	Payload Message `json:"payload"`
+}
+
+// EventRawJSON is Event (see above) but keeps payload as raw data
+type EventRawJSON struct {
+	Topic   string          `json:"topic"`
+	Key     string          `json:"key"`
+	Payload json.RawMessage `json:"payload"`
+}
+
+func (e *EventRawJSON) Marshal() ([]byte, error) {
+	data, err := json.Marshal(*e)
+	return data, errors.WithStack(err)
+}
+
+func (e *EventRawJSON) Unmarshal(data []byte) error {
+	err := json.Unmarshal(data, e)
+	return errors.WithStack(err)
+}