Fix #5313: redhat_subscription module is not idempotent when pool_ids

This fix ensures the idempotency of the redhat_subscription module when pool_ids are used. The main problem was, that a 'None' quantity was not properly handled and that the quantity check compared a string with an integer.

Signed-off-by: Christoph Fiehe <[email protected]>

changelogs/fragments/5313-fix-redhat_subscription-idempotency-pool_ids.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - redhat_subscription - make module idempotent when ``pool_ids`` are used (https://github.com/ansible-collections/community.general/issues/5313).

plugins/modules/packaging/os/redhat_subscription.py

@@ -593,15 +593,22 @@ def update_subscriptions_by_pool_ids(self, pool_ids):
         consumed_pools = RhsmPools(self.module, consumed=True)
 
         existing_pools = {}
+        serials_to_remove = []
         for p in consumed_pools:
-            existing_pools[p.get_pool_id()] = p.QuantityUsed
+            pool_id = p.get_pool_id()
+            quantity_used = p.get_quantity_used()
+            existing_pools[pool_id] = quantity_used
+
+            quantity = pool_ids.get(pool_id, 0)
+            if quantity is not None and quantity != quantity_used:
+                serials_to_remove.append(p.Serial)
 
-        serials_to_remove = [p.Serial for p in consumed_pools if pool_ids.get(p.get_pool_id(), 0) != p.QuantityUsed]
         serials = self.unsubscribe(serials=serials_to_remove)
 
         missing_pools = {}
         for pool_id, quantity in sorted(pool_ids.items()):
-            if existing_pools.get(pool_id, 0) != quantity:
+            quantity_used = existing_pools.get(pool_id, 0)
+            if quantity is None and quantity_used == 0 or quantity is not None and quantity_used != quantity:
                 missing_pools[pool_id] = quantity
 
         self.subscribe_by_pool_ids(missing_pools)
@@ -635,6 +642,9 @@ def __str__(self):
     def get_pool_id(self):
         return getattr(self, 'PoolId', getattr(self, 'PoolID'))
 
+    def get_quantity_used(self):
+        return int(getattr(self, 'QuantityUsed'))
+
     def subscribe(self):
         args = "subscription-manager attach --pool %s" % self.get_pool_id()
         rc, stdout, stderr = self.module.run_command(args, check_rc=True)