Add OAuth examples for SR (#1956)

Author: Claimundefine

examples/oauth_schema_registry.py

@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Copyright 2025 Confluent Inc.
+#
+# Licensed 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
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Examples of setting up Schema Registry with OAuth with static token,
+# Client Credentials, and custom functions
+
+
+# CUSTOM OAuth configuration takes in a custom function, config for that
+# function, and returns the fields shown below. All fields must be returned
+# for OAuth authentication to work
+
+
+from confluent_kafka.schema_registry.schema_registry_client import SchemaRegistryClient
+
+
+def main():
+    static_oauth_config = {'url': 'https://psrc-123456.us-east-1.aws.confluent.cloud',
+                           'bearer.auth.credentials.source': 'STATIC_TOKEN',
+                           'bearer.auth.token': 'static-token',
+                           'bearer.auth.logical.cluster': 'lsrc-12345',
+                           'bearer.auth.identity.pool.id': 'pool-abcd'}
+    static_oauth_sr_client = SchemaRegistryClient(static_oauth_config)
+    print(static_oauth_sr_client.get_subjects())
+
+    client_credentials_oauth_config = {
+        'url': 'https://psrc-123456.us-east-1.aws.confluent.cloud',
+        'bearer.auth.credentials.source': 'OAUTHBEARER',
+        'bearer.auth.client.id': 'client-id',
+        'bearer.auth.client.secret': 'client-secret',
+        'bearer.auth.scope': 'schema_registry',
+        'bearer.auth.issuer.endpoint.url': 'https://yourauthprovider.com/v1/token',
+        'bearer.auth.logical.cluster': 'lsrc-12345',
+        'bearer.auth.identity.pool.id': 'pool-abcd'}
+
+    client_credentials_oauth_sr_client = SchemaRegistryClient(client_credentials_oauth_config)
+    print(client_credentials_oauth_sr_client.get_subjects())
+
+    def custom_oauth_function(config):
+        return config
+
+    custom_config = {'bearer.auth.token': 'example-token',
+                     'bearer.auth.logical.cluster': 'lsrc-12345', 'bearer.auth.identity.pool.id': 'pool-abcd'}
+
+    custom_sr_config = {'url': 'https://psrc-123456.us-east-1.aws.confluent.cloud',
+                        'bearer.auth.credentials.source': 'CUSTOM',
+                        'bearer.auth.custom.provider.function': custom_oauth_function,
+                        'bearer.auth.custom.provider.config': custom_config}
+
+    custom_sr_client = SchemaRegistryClient(custom_sr_config)
+    print(custom_sr_client.get_subjects())
+
+
+if __name__ == '__main__':
+    main()