lhotari commented on code in PR #15576:
URL: https://github.com/apache/pulsar/pull/15576#discussion_r872088658


##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v1/Namespaces.java:
##########
@@ -314,6 +314,49 @@ public void 
revokePermissionOnSubscription(@PathParam("property") String propert
         internalRevokePermissionsOnSubscription(subscription, role);
     }
 
+    @PUT
+    @Path("/{property}/{cluster}/{namespace}/implicitPermissionOnSubscription")
+    @ApiOperation(hidden = true, value = "Allow a consumer's role to have 
implicit permission to consume from a"
+            + " subscription.")
+    @ApiResponses(value = {@ApiResponse(code = 403, message = "Don't have 
admin permission"),
+            @ApiResponse(code = 404, message = "Property or cluster or 
namespace doesn't exist"),
+            @ApiResponse(code = 409, message = "Concurrent modification"),
+            @ApiResponse(code = 501, message = "Authorization is not 
enabled")})
+    public void grantImplicitPermissionOnSubscription(
+            @PathParam("property") String property, @PathParam("cluster") 
String cluster,
+            @PathParam("namespace") String namespace) {
+        validateNamespaceName(property, cluster, namespace);
+        internalSetImplicitPermissionOnSubscription(true);
+    }
+
+    @DELETE
+    @Path("/{property}/{cluster}/{namespace}/implicitPermissionOnSubscription")
+    @ApiOperation(hidden = true, value = "Require a consumer's role to have 
explicit permission to consume from a"
+            + " subscription.")
+    @ApiResponses(value = {@ApiResponse(code = 403, message = "Don't have 
admin permission"),
+            @ApiResponse(code = 404, message = "Property or cluster or 
namespace doesn't exist"),
+            @ApiResponse(code = 409, message = "Concurrent modification"),
+            @ApiResponse(code = 501, message = "Authorization is not 
enabled")})
+    public void revokeImplicitPermissionOnSubscription(
+            @PathParam("property") String property, @PathParam("cluster") 
String cluster,
+            @PathParam("namespace") String namespace) {
+        validateNamespaceName(property, cluster, namespace);
+        internalSetImplicitPermissionOnSubscription(false);
+    }
+
+    @GET
+    @Path("/{property}/{cluster}/{namespace}/implicitPermissionOnSubscription")
+    @ApiOperation(value = "Get permission on subscription required for 
namespace.")
+    @ApiResponses(value = {@ApiResponse(code = 403, message = "Don't have 
admin permission"),
+            @ApiResponse(code = 404, message = "Property or cluster or 
namespace doesn't exist"),
+            @ApiResponse(code = 409, message = "Namespace is not empty")})
+    public boolean getImplicitPermissionOnSubscription(@PathParam("property") 
String property,
+                                                       @PathParam("cluster") 
String cluster,
+                                                       @PathParam("namespace") 
String namespace) {
+        validateNamespaceName(property, cluster, namespace);
+        return getImplicitPermissionOnSubscription();
+    }
+

Review Comment:
   Does this have to be added to the v1 API at all?



##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v2/Namespaces.java:
##########
@@ -267,6 +267,48 @@ public void 
revokePermissionOnSubscription(@PathParam("property") String propert
         internalRevokePermissionsOnSubscription(subscription, role);
     }
 
+    @PUT

Review Comment:
   ```suggestion
       @POST
   ```
   Other API methods to grant permissions are using POST.



##########
pulsar-common/src/main/java/org/apache/pulsar/client/admin/internal/data/AuthPoliciesImpl.java:
##########
@@ -42,6 +42,10 @@ public final class AuthPoliciesImpl implements AuthPolicies {
     @JsonProperty("subscription_auth_roles")
     private Map<String, Set<String>> subscriptionAuthentication = new 
TreeMap<>();
 
+    // Default value is set in the builder
+    @JsonProperty(value = "implicit_subscription_auth")
+    private boolean implicitSubscriptionAuth;

Review Comment:
   Good points Enrico. Yes this should be addressed.



##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/impl/NamespacesBase.java:
##########
@@ -698,6 +698,24 @@ protected void internalGrantPermissionOnNamespace(String 
role, Set<AuthAction> a
         }
     }
 
+    protected boolean getImplicitPermissionOnSubscription() {
+        validateNamespaceOperation(namespaceName, 
NamespaceOperation.GET_PERMISSION);
+        Policies policies = getNamespacePolicies(namespaceName);
+        return policies.auth_policies.isImplicitSubscriptionAuth();
+    }
+
+    protected void internalSetImplicitPermissionOnSubscription(boolean 
isImplicitPermissionOnSubscription) {
+        if (isImplicitPermissionOnSubscription) {
+            validateNamespaceOperation(namespaceName, 
NamespaceOperation.GRANT_PERMISSION);
+        } else {
+            validateNamespaceOperation(namespaceName, 
NamespaceOperation.REVOKE_PERMISSION);
+        }
+        validatePoliciesReadOnlyAccess();
+        updatePolicies(namespaceName, policies -> {
+            
policies.auth_policies.setImplicitSubscriptionAuth(isImplicitPermissionOnSubscription);
+            return policies;
+        });
+    }

Review Comment:
   It might be worth considering PIP-149/#14365 here and use the async style to 
implement the API.
   
   To clarify it: the server side implementation should by async, but the 
client API can contain both sync and async API methods. 



##########
pulsar-broker/src/main/java/org/apache/pulsar/broker/admin/v2/Namespaces.java:
##########
@@ -267,6 +267,48 @@ public void 
revokePermissionOnSubscription(@PathParam("property") String propert
         internalRevokePermissionsOnSubscription(subscription, role);
     }
 
+    @PUT
+    @Path("/{property}/{namespace}/implicitPermissionOnSubscription")
+    @ApiOperation(hidden = true, value = "Allow a consumer's role to have 
implicit permission to consume from a"
+            + " subscription.")
+    @ApiResponses(value = {@ApiResponse(code = 403, message = "Don't have 
admin permission"),
+            @ApiResponse(code = 404, message = "Property or cluster or 
namespace doesn't exist"),
+            @ApiResponse(code = 409, message = "Concurrent modification"),
+            @ApiResponse(code = 501, message = "Authorization is not 
enabled")})
+    public void grantImplicitPermissionOnSubscription(
+            @PathParam("property") String property,
+            @PathParam("namespace") String namespace) {
+        validateNamespaceName(property, namespace);
+        internalSetImplicitPermissionOnSubscription(true);

Review Comment:
   It might be worth considering PIP-149/#14365 here and use the async style to 
implement the API.
   
   To clarify it: the server side implementation should by async, but the 
client API can contain both sync and async API methods. 



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