fix(connector): make webhook source verification mandatory for adyen (#2360)

crates/router/src/connector/adyen.rs

@@ -104,6 +104,9 @@ impl ConnectorValidation for Adyen {
         }
         .into())
     }
+    fn is_webhook_source_verification_mandatory(&self) -> bool {
+        true
+    }
 }
 
 impl api::Payment for Adyen {}

crates/router/src/core/webhooks.rs

@@ -895,6 +895,10 @@ pub async fn webhooks_core<W: types::OutgoingWebhookType>(
                     merchant_account.merchant_id.clone(),
                 )],
             );
+        } else if connector.is_webhook_source_verification_mandatory() {
+            // if webhook consumption is mandatory for connector, fail webhook
+            // so that merchant can retrigger it after updating merchant_secret
+            return Err(errors::ApiErrorResponse::WebhookAuthenticationFailed.into());
         }
 
         logger::info!(source_verified=?source_verified);

crates/router/src/services/api.rs

@@ -88,6 +88,10 @@ pub trait ConnectorValidation: ConnectorCommon {
             .change_context(errors::ConnectorError::MissingConnectorTransactionID)
             .map(|_| ())
     }
+
+    fn is_webhook_source_verification_mandatory(&self) -> bool {
+        false
+    }
 }
 
 #[async_trait::async_trait]