add iam notification (#604)

move tonic service to rustfs

crates/iam/src/store.rs

@@ -23,6 +23,7 @@ use time::OffsetDateTime;
 
 #[async_trait::async_trait]
 pub trait Store: Clone + Send + Sync + 'static {
+    fn has_watcher(&self) -> bool;
     async fn save_iam_config<Item: Serialize + Send>(&self, item: Item, path: impl AsRef<str> + Send) -> Result<()>;
     async fn load_iam_config<Item: DeserializeOwned>(&self, path: impl AsRef<str> + Send) -> Result<Item>;
     async fn delete_iam_config(&self, path: impl AsRef<str> + Send) -> Result<()>;
@@ -89,6 +90,24 @@ impl UserType {
             UserType::None => "",
         }
     }
+    pub fn to_u64(&self) -> u64 {
+        match self {
+            UserType::Svc => 1,
+            UserType::Sts => 2,
+            UserType::Reg => 3,
+            UserType::None => 0,
+        }
+    }
+
+    pub fn from_u64(u64: u64) -> Option<Self> {
+        match u64 {
+            1 => Some(UserType::Svc),
+            2 => Some(UserType::Sts),
+            3 => Some(UserType::Reg),
+            0 => Some(UserType::None),
+            _ => None,
+        }
+    }
 }
 
 #[derive(Serialize, Deserialize, Clone)]