feat: init

immediate/envelope.rs

@@ -0,0 +1,39 @@
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct TransportEnvelope<T> {
+    #[serde(default = "Uuid::now_v7")]
+    pub message_id: Uuid,
+    pub request_id: Uuid,
+    pub user_id: Uuid,
+    pub payload: T,
+    #[serde(default = "default_timestamp")]
+    pub created_at: chrono::DateTime<chrono::Utc>,
+    #[serde(default)]
+    pub attempt: u8,
+}
+
+fn default_timestamp() -> chrono::DateTime<chrono::Utc> {
+    chrono::Utc::now()
+}
+
+impl<T> TransportEnvelope<T> {
+    pub fn new(request_id: Uuid, user_id: Uuid, payload: T) -> Self {
+        Self {
+            message_id: Uuid::now_v7(),
+            request_id,
+            user_id,
+            payload,
+            created_at: chrono::Utc::now(),
+            attempt: 1,
+        }
+    }
+
+    pub fn retry(self) -> Self {
+        Self {
+            attempt: self.attempt + 1,
+            ..self
+        }
+    }
+}