feat(events): add extracted fields based on req/res types (#2795)

crates/common_utils/src/events.rs

@@ -0,0 +1,91 @@
+use common_enums::{PaymentMethod, PaymentMethodType};
+use serde::Serialize;
+
+pub trait ApiEventMetric {
+    fn get_api_event_type(&self) -> Option<ApiEventsType> {
+        None
+    }
+}
+
+#[derive(Clone, Debug, Eq, PartialEq, Serialize)]
+#[serde(tag = "flow_type")]
+pub enum ApiEventsType {
+    Payout,
+    Payment {
+        payment_id: String,
+    },
+    Refund {
+        payment_id: Option<String>,
+        refund_id: String,
+    },
+    PaymentMethod {
+        payment_method_id: String,
+        payment_method: Option<PaymentMethod>,
+        payment_method_type: Option<PaymentMethodType>,
+    },
+    Customer {
+        customer_id: String,
+    },
+    User {
+        //specified merchant_id will overridden on global defined
+        merchant_id: String,
+        user_id: String,
+    },
+    PaymentMethodList {
+        payment_id: Option<String>,
+    },
+    Webhooks {
+        connector: String,
+        payment_id: Option<String>,
+    },
+    Routing,
+    ResourceListAPI,
+    PaymentRedirectionResponse,
+    // TODO: This has to be removed once the corresponding apiEventTypes are created
+    Miscellaneous,
+}
+
+impl ApiEventMetric for serde_json::Value {}
+impl ApiEventMetric for () {}
+
+impl<Q: ApiEventMetric, E> ApiEventMetric for Result<Q, E> {
+    fn get_api_event_type(&self) -> Option<ApiEventsType> {
+        match self {
+            Ok(q) => q.get_api_event_type(),
+            Err(_) => None,
+        }
+    }
+}
+
+// TODO: Ideally all these types should be replaced by newtype responses
+impl<T> ApiEventMetric for Vec<T> {
+    fn get_api_event_type(&self) -> Option<ApiEventsType> {
+        Some(ApiEventsType::Miscellaneous)
+    }
+}
+
+#[macro_export]
+macro_rules! impl_misc_api_event_type {
+    ($($type:ty),+) => {
+        $(
+            impl ApiEventMetric for $type {
+                fn get_api_event_type(&self) -> Option<ApiEventsType> {
+                    Some(ApiEventsType::Miscellaneous)
+                }
+            }
+        )+
+     };
+}
+
+impl_misc_api_event_type!(
+    String,
+    (&String, &String),
+    (Option<i64>, Option<i64>, String),
+    bool
+);
+
+impl<T: ApiEventMetric> ApiEventMetric for &T {
+    fn get_api_event_type(&self) -> Option<ApiEventsType> {
+        T::get_api_event_type(self)
+    }
+}

crates/common_utils/src/lib.rs

@@ -6,6 +6,8 @@ pub mod consts;
 pub mod crypto;
 pub mod custom_serde;
 pub mod errors;
+#[allow(missing_docs)] // Todo: add docs
+pub mod events;
 pub mod ext_traits;
 pub mod fp_utils;
 pub mod pii;