feat(api_event_errors): error field in APIEvents (#2808)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: harsh-sharma-juspay <125131007+harsh-sharma-juspay@users.noreply.github.com>

crates/api_models/src/errors/types.rs

@@ -1,6 +1,7 @@
 use std::borrow::Cow;
 
 use reqwest::StatusCode;
+use serde::Serialize;
 
 #[derive(Debug, serde::Serialize)]
 pub enum ErrorType {
@@ -78,7 +79,8 @@ pub struct Extra {
     pub reason: Option<String>,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Serialize, Debug, Clone)]
+#[serde(tag = "type", content = "value")]
 pub enum ApiErrorResponse {
     Unauthorized(ApiError),
     ForbiddenCommonResource(ApiError),
@@ -88,7 +90,7 @@ pub enum ApiErrorResponse {
     Unprocessable(ApiError),
     InternalServerError(ApiError),
     NotImplemented(ApiError),
-    ConnectorError(ApiError, StatusCode),
+    ConnectorError(ApiError, #[serde(skip_serializing)] StatusCode),
     NotFound(ApiError),
     MethodNotAllowed(ApiError),
     BadRequest(ApiError),

crates/router/src/core/webhooks.rs

@@ -913,6 +913,7 @@ pub async fn webhooks_wrapper<W: types::OutgoingWebhookType, Ctx: PaymentMethodR
         Some(response_value),
         None,
         auth_type,
+        None,
         api_event,
         req,
     );

crates/router/src/events/api_logs.rs

@@ -36,6 +36,7 @@ pub struct ApiEvent {
     ip_addr: Option<String>,
     url_path: String,
     response: Option<serde_json::Value>,
+    error: Option<serde_json::Value>,
     #[serde(flatten)]
     event_type: ApiEventsType,
     hs_latency: Option<u128>,
@@ -52,6 +53,7 @@ impl ApiEvent {
         response: Option<serde_json::Value>,
         hs_latency: Option<u128>,
         auth_type: AuthenticationType,
+        error: Option<serde_json::Value>,
         event_type: ApiEventsType,
         http_req: &HttpRequest,
     ) -> Self {
@@ -64,6 +66,7 @@ impl ApiEvent {
             request,
             response,
             auth_type,
+            error,
             ip_addr: http_req
                 .connection_info()
                 .realip_remote_addr()

crates/router/src/services/api.rs

@@ -769,7 +769,7 @@ where
     T: Debug + Serialize + ApiEventMetric,
     A: AppStateInfo + Clone,
     E: ErrorSwitch<OErr> + error_stack::Context,
-    OErr: ResponseError + error_stack::Context,
+    OErr: ResponseError + error_stack::Context + Serialize,
     errors::ApiErrorResponse: ErrorSwitch<OErr>,
 {
     let request_id = RequestId::extract(request)
@@ -826,7 +826,9 @@ where
         .as_millis();
 
     let mut serialized_response = None;
+    let mut error = None;
     let mut overhead_latency = None;
+
     let status_code = match output.as_ref() {
         Ok(res) => {
             if let ApplicationResponse::Json(data) = res {
@@ -854,7 +856,17 @@ where
 
             metrics::request::track_response_status_code(res)
         }
-        Err(err) => err.current_context().status_code().as_u16().into(),
+        Err(err) => {
+            error.replace(
+                serde_json::to_value(err.current_context())
+                    .into_report()
+                    .attach_printable("Failed to serialize json response")
+                    .change_context(errors::ApiErrorResponse::InternalServerError.switch())
+                    .ok()
+                    .into(),
+            );
+            err.current_context().status_code().as_u16().into()
+        }
     };
 
     let api_event = ApiEvent::new(
@@ -866,6 +878,7 @@ where
         serialized_response,
         overhead_latency,
         auth_type,
+        error,
         event_type.unwrap_or(ApiEventsType::Miscellaneous),
         request,
     );