Add 'message.attempt.recovered' operational webhook

This event is fired when a successful attempt is made after
several attemtps have already failed.
It already exists in the hosted svix.com product

Author: svix-aaron1011

server/openapi.json

@@ -1747,6 +1747,69 @@
                 ],
                 "type": "object"
             },
+            "MessageAttemptRecoveredEvent": {
+                "description": "Sent on a successful dispatch after an earlier failure op webhook has already been sent.",
+                "properties": {
+                    "data": {
+                        "$ref": "#/components/schemas/MessageAttemptRecoveredEventData"
+                    },
+                    "type": {
+                        "default": "message.attempt.recovered",
+                        "enum": [
+                            "message.attempt.recovered"
+                        ],
+                        "type": "string"
+                    }
+                },
+                "required": [
+                    "data",
+                    "type"
+                ],
+                "type": "object"
+            },
+            "MessageAttemptRecoveredEventData": {
+                "description": "Sent when a message delivery has failed (all of the retry attempts have been exhausted) as a \"message.attempt.exhausted\" type or after it's failed four times as a \"message.attempt.failing\" event.",
+                "properties": {
+                    "appId": {
+                        "example": "app_1srOrx2ZWZBpBUvZwXKQmoEYga2",
+                        "type": "string"
+                    },
+                    "appUid": {
+                        "example": "unique-app-identifier",
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "nullable": true,
+                        "pattern": "^[a-zA-Z0-9\\-_.]+$",
+                        "type": "string"
+                    },
+                    "endpointId": {
+                        "example": "ep_1srOrx2ZWZBpBUvZwXKQmoEYga2",
+                        "type": "string"
+                    },
+                    "lastAttempt": {
+                        "$ref": "#/components/schemas/MessageAttempetLast"
+                    },
+                    "msgEventId": {
+                        "example": "unique-msg-identifier",
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "nullable": true,
+                        "pattern": "^[a-zA-Z0-9\\-_.]+$",
+                        "type": "string"
+                    },
+                    "msgId": {
+                        "example": "msg_1srOrx2ZWZBpBUvZwXKQmoEYga2",
+                        "type": "string"
+                    }
+                },
+                "required": [
+                    "appId",
+                    "endpointId",
+                    "lastAttempt",
+                    "msgId"
+                ],
+                "type": "object"
+            },
             "MessageAttemptTriggerType": {
                 "description": "The reason an attempt was made:\n- Scheduled = 0\n- Manual = 1",
                 "enum": [
@@ -7742,6 +7805,30 @@
                     "Webhooks"
                 ]
             }
+        },
+        "MessageAttemptRecoveredEvent": {
+            "post": {
+                "description": "Sent on a successful dispatch after an earlier failure op webhook has already been sent.",
+                "operationId": "MessageAttemptRecoveredEvent",
+                "requestBody": {
+                    "content": {
+                        "application/json": {
+                            "schema": {
+                                "$ref": "#/components/schemas/MessageAttemptRecoveredEvent"
+                            }
+                        }
+                    }
+                },
+                "responses": {
+                    "2XX": {
+                        "description": "Return any 2XX status to indicate that the data was received successfully"
+                    }
+                },
+                "summary": "MessageAttemptRecoveredEvent",
+                "tags": [
+                    "Webhooks"
+                ]
+            }
         }
     }
 }

server/svix-server/src/core/operational_webhooks.rs

@@ -103,6 +103,8 @@ pub enum OperationalWebhook {
     MessageAttemptExhausted(MessageAttemptEvent),
     #[serde(rename = "message.attempt.failing")]
     MessageAttemptFailing(MessageAttemptEvent),
+    #[serde(rename = "message.attempt.recovered")]
+    MessageAttemptRecovered(MessageAttemptEvent),
 }
 
 pub type OperationalWebhookSender = Arc<OperationalWebhookSenderInner>;

server/svix-server/src/openapi.rs

@@ -415,6 +415,13 @@ mod webhooks {
         common_: MessageAttemptEvent,
     }
 
+    #[derive(JsonSchema)]
+    #[allow(unused)]
+    struct MessageAttemptRecoveredEventData {
+        #[serde(flatten)]
+        common_: MessageAttemptEvent,
+    }
+
     webhook_event!(
         EndpointCreatedEvent,
         EndpointCreatedEventData,
@@ -451,6 +458,12 @@ mod webhooks {
         "message.attempt.failing",
         "Sent after a message has been failing for a few times.\nIt's sent on the fourth failure. It complements `message.attempt.exhausted` which is sent after the last failure."
     );
+    webhook_event!(
+        MessageAttemptRecoveredEvent,
+        MessageAttemptRecoveredEventData,
+        "message.attempt.recovered",
+        "Sent on a successful dispatch after an earlier failure op webhook has already been sent."
+    );
 
     /// Generates documentation for operational webhooks in the Redoc `x-webhooks`
     /// format. For more info see https://redocly.com/docs/api-reference-docs/specification-extensions/x-webhooks/
@@ -462,6 +475,7 @@ mod webhooks {
             document_webhook::<EndpointUpdatedEvent>(),
             document_webhook::<MessageAttemptExhaustedEvent>(),
             document_webhook::<MessageAttemptFailingEvent>(),
+            document_webhook::<MessageAttemptRecoveredEvent>(),
         ])
     }
 }

server/svix-server/src/static/openapi.json

@@ -407,11 +407,19 @@ async fn make_http_call(
 
 #[tracing::instrument(skip_all, fields(response_code, msg_dest_id = msg_dest.id.0))]
 async fn handle_successful_dispatch(
-    WorkerContext { cache, db, .. }: &WorkerContext<'_>,
+    WorkerContext {
+        cache,
+        db,
+        op_webhook_sender,
+        ..
+    }: &WorkerContext<'_>,
     DispatchContext {
         org_id,
         endp,
         app_id,
+        app_uid,
+        msg_task,
+        msg_uid,
         ..
     }: DispatchContext<'_>,
     SuccessfulDispatch(mut attempt): SuccessfulDispatch,
@@ -432,6 +440,28 @@ async fn handle_successful_dispatch(
     tracing::Span::current().record("response_code", attempt.response_status_code);
     tracing::info!("Webhook success.");
 
+    if msg_task.attempt_count as usize >= OP_WEBHOOKS_SEND_FAILING_EVENT_AFTER {
+        if let Err(e) = op_webhook_sender
+            .send_operational_webhook(
+                org_id,
+                OperationalWebhook::MessageAttemptRecovered(MessageAttemptEvent {
+                    app_id: app_id.clone(),
+                    app_uid: app_uid.cloned(),
+                    endpoint_id: msg_task.endpoint_id.clone(),
+                    msg_id: msg_task.msg_id.clone(),
+                    msg_event_id: msg_uid.cloned(),
+                    last_attempt: attempt.into(),
+                }),
+            )
+            .await
+        {
+            tracing::error!(
+                "Failed sending MessageAttemptRecovered Operational Webhook: {}",
+                e
+            );
+        }
+    }
+
     Ok(())
 }