cckellogg commented on a change in pull request #6428: [Issue 
5720][authorization provider] (WIP) Add more granularity
URL: https://github.com/apache/pulsar/pull/6428#discussion_r398367362
 
 

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 File path: 
pulsar-common/src/main/java/org/apache/pulsar/common/policies/data/NamespaceOperation.java
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 @@ -0,0 +1,83 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
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+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.pulsar.common.policies.data;
+
+/**
+ * Namespace authorization operations.
+ */
+public enum NamespaceOperation {
 
 Review comment:
   I think we can simply these actions. I don't understand why an action is 
needed for every rest endpoint. For example, you can either update a namespace 
or not. You can either read a namespace or not. Why do you need fine grained 
control for updating/reading each field in a namespace? A simple Write 
permission can be applied to any action that changes a namespace. 
   
   In my opinion, having an action for every endpoint makes the code very 
difficult to change and it's hard to maintain. How will you depreciate actions 
and provide backward compatibility? What happens when you add a new field to a 
namespace policy? This could break exiting implementations and their 
permissions or force users to reconfigure authorization rules. 
   
   I see 2 basic actions needed to start for namespaces:
   - Write
   - Read
   
   Same for the most of the other entities. We should start with a small set. 
These actions will become public api and will be very difficult to change or 
modify.
   
   I disagree with the layout and operation mapping from PIP-49. 
   
   I agree with @sijie and think we should simplify the verbs and I think 
pulsar should move more towards a policy/role based system like nomad, consul, 
vault, and or kubernetes. 
   

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