From bc25877a6bf4d579508b1ee9df3ca7870757f029 Mon Sep 17 00:00:00 2001
From: Tyler Lubeck <tyler@tylerlubeck.com>
Date: Sun, 29 Dec 2019 15:51:41 -0800
Subject: Implement __eq__ and __hash__ for ACL objects (#1955)

---
 kafka/admin/acl_resource.py  | 34 +++++++++++++++-
 test/test_acl_comparisons.py | 92 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 125 insertions(+), 1 deletion(-)
 create mode 100644 test/test_acl_comparisons.py

diff --git a/kafka/admin/acl_resource.py b/kafka/admin/acl_resource.py
index 7a012d2..fd997a1 100644
--- a/kafka/admin/acl_resource.py
+++ b/kafka/admin/acl_resource.py
@@ -112,6 +112,24 @@ class ACLFilter(object):
             resource=self.resource_pattern
         )
 
+    def __eq__(self, other):
+        return all((
+            self.principal == other.principal,
+            self.host == other.host,
+            self.operation == other.operation,
+            self.permission_type == other.permission_type,
+            self.resource_pattern == other.resource_pattern
+        ))
+
+    def __hash__(self):
+        return hash((
+            self.principal,
+            self.host,
+            self.operation,
+            self.permission_type,
+            self.resource_pattern,
+        ))
+
 
 class ACL(ACLFilter):
     """Represents a concrete ACL for a specific ResourcePattern
@@ -181,6 +199,20 @@ class ResourcePatternFilter(object):
             self.pattern_type.name
         )
 
+    def __eq__(self, other):
+        return all((
+            self.resource_type == other.resource_type,
+            self.resource_name == other.resource_name,
+            self.pattern_type == other.pattern_type,
+        ))
+
+    def __hash__(self):
+        return hash((
+            self.resource_type,
+            self.resource_name,
+            self.pattern_type
+        ))
+
 
 class ResourcePattern(ResourcePatternFilter):
     """A resource pattern to apply the ACL to
@@ -209,4 +241,4 @@ class ResourcePattern(ResourcePatternFilter):
         if self.pattern_type in [ACLResourcePatternType.ANY, ACLResourcePatternType.MATCH]:
             raise IllegalArgumentError(
                 "pattern_type cannot be {} on a concrete ResourcePattern".format(self.pattern_type.name)
-            )
\ No newline at end of file
+            )
diff --git a/test/test_acl_comparisons.py b/test/test_acl_comparisons.py
new file mode 100644
index 0000000..291bf0e
--- /dev/null
+++ b/test/test_acl_comparisons.py
@@ -0,0 +1,92 @@
+from kafka.admin.acl_resource import ACL
+from kafka.admin.acl_resource import ACLOperation
+from kafka.admin.acl_resource import ACLPermissionType
+from kafka.admin.acl_resource import ResourcePattern
+from kafka.admin.acl_resource import ResourceType
+from kafka.admin.acl_resource import ACLResourcePatternType
+
+
+def test_different_acls_are_different():
+    one = ACL(
+        principal='User:A',
+        host='*',
+        operation=ACLOperation.ALL,
+        permission_type=ACLPermissionType.ALLOW,
+        resource_pattern=ResourcePattern(
+            resource_type=ResourceType.TOPIC,
+            resource_name='some-topic',
+            pattern_type=ACLResourcePatternType.LITERAL
+        )
+    )
+
+    two = ACL(
+        principal='User:B',  # Different principal
+        host='*',
+        operation=ACLOperation.ALL,
+        permission_type=ACLPermissionType.ALLOW,
+        resource_pattern=ResourcePattern(
+            resource_type=ResourceType.TOPIC,
+            resource_name='some-topic',
+            pattern_type=ACLResourcePatternType.LITERAL
+        )
+    )
+
+    assert one != two
+    assert hash(one) != hash(two)
+
+def test_different_acls_are_different_with_glob_topics():
+    one = ACL(
+        principal='User:A',
+        host='*',
+        operation=ACLOperation.ALL,
+        permission_type=ACLPermissionType.ALLOW,
+        resource_pattern=ResourcePattern(
+            resource_type=ResourceType.TOPIC,
+            resource_name='*',
+            pattern_type=ACLResourcePatternType.LITERAL
+        )
+    )
+
+    two = ACL(
+        principal='User:B',  # Different principal
+        host='*',
+        operation=ACLOperation.ALL,
+        permission_type=ACLPermissionType.ALLOW,
+        resource_pattern=ResourcePattern(
+            resource_type=ResourceType.TOPIC,
+            resource_name='*',
+            pattern_type=ACLResourcePatternType.LITERAL
+        )
+    )
+
+    assert one != two
+    assert hash(one) != hash(two)
+
+def test_same_acls_are_same():
+    one = ACL(
+        principal='User:A',
+        host='*',
+        operation=ACLOperation.ALL,
+        permission_type=ACLPermissionType.ALLOW,
+        resource_pattern=ResourcePattern(
+            resource_type=ResourceType.TOPIC,
+            resource_name='some-topic',
+            pattern_type=ACLResourcePatternType.LITERAL
+        )
+    )
+
+    two = ACL(
+        principal='User:A',
+        host='*',
+        operation=ACLOperation.ALL,
+        permission_type=ACLPermissionType.ALLOW,
+        resource_pattern=ResourcePattern(
+            resource_type=ResourceType.TOPIC,
+            resource_name='some-topic',
+            pattern_type=ACLResourcePatternType.LITERAL
+        )
+    )
+
+    assert one == two
+    assert hash(one) == hash(two)
+    assert len(set((one, two))) == 1
-- 
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