feat: event ids, outbox identity migration

crates/adapters/nats/src/consumer.rs

@@ -5,7 +5,7 @@ use async_nats::{
 use async_trait::async_trait;
 use domain::{
     errors::DomainError,
-    events::{AckHandle, DomainEvent, EventEnvelope},
+    events::{AckHandle, DomainEvent, EventEnvelope, EventId},
     ports::EventConsumer,
 };
 use futures::{
@@ -15,7 +15,7 @@ use futures::{
 use std::sync::Arc;
 use tokio::sync::{Mutex, mpsc};
 
-use crate::{config::NatsConfig, payload::NatsEventPayload, subject::consumer_subject_filter};
+use crate::{config::NatsConfig, payload::NatsEventMessage, subject::consumer_subject_filter};
 
 // ── JetStream ack handle ─────────────────────────────────────────────────────
 
@@ -66,21 +66,33 @@ impl AckHandle for NoopAck {
 
 // ── Envelope construction helpers ────────────────────────────────────────────
 
-fn decode_js(msg: async_nats::jetstream::Message) -> Result<EventEnvelope, DomainError> {
-    let payload: NatsEventPayload = serde_json::from_slice(&msg.payload)
+fn decode_message(bytes: &[u8]) -> Result<(Option<EventId>, DomainEvent), DomainError> {
+    let message: NatsEventMessage = serde_json::from_slice(bytes)
         .map_err(|e| DomainError::InfrastructureError(format!("deserialize: {e}")))?;
-    let event = DomainEvent::try_from(payload)?;
+    let id = message
+        .event_id
+        .as_deref()
+        .map(|s| {
+            uuid::Uuid::parse_str(s)
+                .map(EventId::from_uuid)
+                .map_err(|e| DomainError::InfrastructureError(format!("event_id: {e}")))
+        })
+        .transpose()?;
+    Ok((id, DomainEvent::try_from(message.payload)?))
+}
+
+fn decode_js(msg: async_nats::jetstream::Message) -> Result<EventEnvelope, DomainError> {
+    let (id, event) = decode_message(&msg.payload)?;
     Ok(EventEnvelope::new(
+        id,
         event,
         Box::new(NatsJetStreamAckHandle { message: msg }),
     ))
 }
 
 fn decode_core(msg: async_nats::Message) -> Result<EventEnvelope, DomainError> {
-    let payload: NatsEventPayload = serde_json::from_slice(&msg.payload)
-        .map_err(|e| DomainError::InfrastructureError(format!("deserialize: {e}")))?;
-    let event = DomainEvent::try_from(payload)?;
-    Ok(EventEnvelope::new(event, Box::new(NoopAck)))
+    let (id, event) = decode_message(&msg.payload)?;
+    Ok(EventEnvelope::new(id, event, Box::new(NoopAck)))
 }
 
 // ── Channel-bridge shared by both consumers ──────────────────────────────────

crates/adapters/nats/src/payload.rs

@@ -1 +1,2 @@
+pub use event_payload::EventMessage as NatsEventMessage;
 pub use event_payload::EventPayload as NatsEventPayload;