Feature/event (#513)

* improve code for notify

* fix

* cargo fmt

* improve code and create `DEFAULT_DELIMITER`

* fix

* fix

* improve code for notify

* fmt

* Update crates/notify/src/registry.rs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update crates/notify/src/factory.rs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix cllipy

* fix

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

crates/utils/src/notify/mod.rs

@@ -0,0 +1,59 @@
+use hyper::HeaderMap;
+use s3s::{S3Request, S3Response};
+use std::collections::HashMap;
+
+/// Extract request parameters from S3Request, mainly header information.
+#[allow(dead_code)]
+pub fn extract_req_params<T>(req: &S3Request<T>) -> HashMap<String, String> {
+    let mut params = HashMap::new();
+    for (key, value) in req.headers.iter() {
+        if let Ok(val_str) = value.to_str() {
+            params.insert(key.as_str().to_string(), val_str.to_string());
+        }
+    }
+    params
+}
+
+/// Extract request parameters from hyper::HeaderMap, mainly header information.
+/// This function is useful when you have a raw HTTP request and need to extract parameters.
+pub fn extract_req_params_header(head: &HeaderMap) -> HashMap<String, String> {
+    let mut params = HashMap::new();
+    for (key, value) in head.iter() {
+        if let Ok(val_str) = value.to_str() {
+            params.insert(key.as_str().to_string(), val_str.to_string());
+        }
+    }
+    params
+}
+
+/// Extract response elements from S3Response, mainly header information.
+#[allow(dead_code)]
+pub fn extract_resp_elements<T>(resp: &S3Response<T>) -> HashMap<String, String> {
+    let mut params = HashMap::new();
+    for (key, value) in resp.headers.iter() {
+        if let Ok(val_str) = value.to_str() {
+            params.insert(key.as_str().to_string(), val_str.to_string());
+        }
+    }
+    params
+}
+
+/// Get host from header information.
+#[allow(dead_code)]
+pub fn get_request_host(headers: &HeaderMap) -> String {
+    headers
+        .get("host")
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or_default()
+        .to_string()
+}
+
+/// Get user-agent from header information.
+#[allow(dead_code)]
+pub fn get_request_user_agent(headers: &HeaderMap) -> String {
+    headers
+        .get("user-agent")
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or_default()
+        .to_string()
+}