empiredan commented on code in PR #1518:
URL: 
https://github.com/apache/incubator-pegasus/pull/1518#discussion_r1228941458


##########
src/runtime/ranger/ranger_resource_policy_manager.cpp:
##########
@@ -216,9 +216,9 @@ void ranger_resource_policy_manager::start()
                            std::chrono::milliseconds(1));
 }
 
-bool ranger_resource_policy_manager::allowed(const int rpc_code,
-                                             const std::string &user_name,
-                                             const std::string &database_name)
+access_control_result ranger_resource_policy_manager::allowed(const int 
rpc_code,
+                                                              const 
std::string &user_name,
+                                                              const 
std::string &database_name)

Review Comment:
   Could be declared as `const`, while both `_global_policies_lock` and 
`_database_policies_lock` could be declared `mutable`.



##########
src/runtime/test/ranger_resource_policy_manager_test.cpp:
##########
@@ -193,27 +193,142 @@ TEST(ranger_resource_policy_manager_test, 
ranger_resource_policy_serialized_test
     {
         access_type ac_type;
         std::string user_name;
-        bool expected_result;
-    } tests[] = {{access_type::kRead, "user", false},      
{access_type::kRead, "user1", true},
-                 {access_type::kWrite, "user1", true},     
{access_type::kCreate, "user1", false},
-                 {access_type::kDrop, "user1", false},     
{access_type::kList, "user1", true},
-                 {access_type::kMetadata, "user1", false}, 
{access_type::kControl, "user1", false},
-                 {access_type::kRead, "user2", true},      
{access_type::kWrite, "user2", false},
-                 {access_type::kCreate, "user2", false},   
{access_type::kDrop, "user2", false},
-                 {access_type::kList, "user2", true},      
{access_type::kMetadata, "user2", false},
-                 {access_type::kControl, "user2", false},  
{access_type::kRead, "user3", false},
-                 {access_type::kWrite, "user3", false},    
{access_type::kCreate, "user3", false},
-                 {access_type::kDrop, "user3", false},     
{access_type::kList, "user3", true},
-                 {access_type::kMetadata, "user3", false}, 
{access_type::kControl, "user3", false},
-                 {access_type::kRead, "user4", true},      
{access_type::kWrite, "user4", false},
-                 {access_type::kCreate, "user4", false},   
{access_type::kDrop, "user4", false},
-                 {access_type::kList, "user4", true},      
{access_type::kMetadata, "user4", false},
-                 {access_type::kControl, "user4", false}};
+        policy_check_type check_type;
+        policy_check_status expected_result;
+    } tests[] = {

Review Comment:
   How about providing some simple description for each case ?



##########
src/runtime/ranger/ranger_resource_policy_manager.h:
##########
@@ -74,9 +74,10 @@ class ranger_resource_policy_manager
     // When using Ranger for ACL, periodically pull policies from Ranger 
service.
     void start();
 
-    // Return true if the 'user_name' is allowed to access 'database_name' via 
'rpc_code'.
-    bool
-    allowed(const int rpc_code, const std::string &user_name, const 
std::string &database_name);
+    // Return 'access_control_result::kAllowed' if the 'user_name' is allowed 
to access
+    // 'database_name' via 'rpc_code'.
+    access_control_result
+    allowed(const int rpc_code, const std::string &user_name, const 
std::string &app_name);

Review Comment:
   Why did `database_name` changed to `app_name` ?



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