feat: Add api to list user roles on project

crates/api-types/src/v3/role_assignment.rs

@@ -175,3 +175,13 @@ pub struct RoleAssignmentListParameters {
     #[serde(default)]
     pub include_names: Option<bool>,
 }
+
+/// Role assignments - List of roles.
+#[derive(Clone, Debug, Deserialize, PartialEq, Serialize)]
+#[cfg_attr(feature = "openapi", derive(utoipa::ToSchema))]
+#[cfg_attr(feature = "validate", derive(validator::Validate))]
+pub struct RoleAssignmentRoleList {
+    /// Collection of role objects from assignments.
+    #[cfg_attr(feature = "validate", validate(nested))]
+    pub roles: Vec<Role>,
+}

crates/api-types/src/v3/role_assignment_conv.rs

@@ -104,6 +104,17 @@ impl TryFrom<api_types::RoleAssignmentListParameters>
     }
 }
 
+impl TryFrom<provider_types::Assignment> for api_types::Role {
+    type Error = KeystoneApiError;
+
+    fn try_from(value: provider_types::Assignment) -> Result<Self, Self::Error> {
+        Ok(api_types::Role {
+            id: value.role_id,
+            name: value.role_name,
+        })
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use crate::v3::role_assignment::*;

crates/keystone/src/api/v3/role_assignment/project/user/role.rs

@@ -18,8 +18,14 @@ use crate::keystone::ServiceState;
 
 mod check;
 mod grant;
+mod list;
 mod revoke;
 
 pub(crate) fn openapi_router() -> OpenApiRouter<ServiceState> {
-    OpenApiRouter::new().routes(routes!(check::check, grant::grant, revoke::revoke))
+    OpenApiRouter::new().routes(routes!(
+        check::check,
+        grant::grant,
+        revoke::revoke,
+        list::list
+    ))
 }