1 files changed, 12 insertions, 0 deletions
diff --git a/common/shared/src/main/scala/ApiProtocol.scala b/common/shared/src/main/scala/ApiProtocol.scala
new file mode 100644
index 0000000..5d0e00a
--- /dev/null
+++ b/common/shared/src/main/scala/ApiProtocol.scala
@@ -0,0 +1,12 @@
+package triad
+
+import java.time.Instant
+import spray.json.{DerivedJsonProtocol, JsNumber, JsValue, JsonFormat}
+
+object ApiProtocol extends DerivedJsonProtocol {
+  implicit val timestampFormat: JsonFormat[Instant] = new JsonFormat[Instant] {
+    def read(js: JsValue) = Instant.ofEpochMilli(js.convertTo[Long])
+    def write(i: Instant) = JsNumber(i.toEpochMilli)
+  }
+  implicit val messageFormat = jsonFormat[Message]
+}