Fix stricter python 3.12 imports

Author: robooo

setup.py

@@ -13,7 +13,7 @@
 AVRO_REQUIRES = ['fastavro >= 1.3.2', 'avro >= 1.11.1']
 JSON_REQUIRES = ['jsonschema >= 3.2.0', 'pyrsistent >= 0.20.0']
 PROTO_REQUIRES = ['protobuf >= 4.22.0', 'googleapis-common-protos >= 1.66.0']
-SCHEMA_REGISTRY_REQUIRES = ['httpx>=0.26', 'cachetools >= 5.5.0', 'attrs >= 24.3.0']
+SCHEMA_REGISTRY_REQUIRES = ['httpx>=0.26', 'cachetools >= 5.5.0', 'attrs >= 24.3.0', 'authlib >= 1.0.0']
 ALL = AVRO_REQUIRES + JSON_REQUIRES + PROTO_REQUIRES + SCHEMA_REGISTRY_REQUIRES
 setup(name         = 'robotframework-confluentkafkalibrary',
       version      = VERSION,

src/ConfluentKafkaLibrary/__init__.py

@@ -4,10 +4,10 @@
 try:
     from confluent_kafka.schema_registry import SchemaRegistryClient
     _SCHEMA_REGISTRY_CLIENT_AVAILABLE = True
-except ImportError:
+    _SCHEMA_REGISTRY_IMPORT_ERROR = None
+except ImportError as e:
+    _SCHEMA_REGISTRY_IMPORT_ERROR = e
     _SCHEMA_REGISTRY_CLIENT_AVAILABLE = False
-    raise ImportError("SchemaRegistry requires additional dependencies to be installed. \
-                       Please install with 'pip install robotframework-confluentkafkalibrary[schemaregistry]'")
 
 from confluent_kafka.admin import AdminClient, NewTopic, NewPartitions, ConfigResource
 from robot.libraries.BuiltIn import BuiltIn, RobotNotRunningError
@@ -21,7 +21,8 @@
     try:
         from .serialization import Serializer, Deserializer
         IMPORTS += Serializer, Deserializer
-    except ImportError:
+    except ImportError as e:
+        print(e)
         pass
 
 #class ConfluentKafkaLibrary(KafkaConsumer, KafkaProducer, Serializer, Deserializer):
@@ -140,4 +141,11 @@ def config_resource(self, restype, name, **kwargs):
         return ConfigResource(restype=restype, name=name, **kwargs)
 
     def get_schema_registry_client(self, conf):
+        if not _SCHEMA_REGISTRY_CLIENT_AVAILABLE:
+            raise ImportError(
+                "SchemaRegistry requires additional dependencies to be installed or one of its transitive dependencies is missing. "
+                "Please install with 'pip install robotframework-confluentkafkalibrary[schemaregistry]'.\n"
+                "If the error persists, check for missing dependencies in your environment.\n"
+                f"ImportError: {_SCHEMA_REGISTRY_IMPORT_ERROR}"
+            )
         return SchemaRegistryClient(conf)