Moved async into experimental package for regular release

CHANGELOG.md

@@ -6,15 +6,15 @@
 
 ### Added
 
-- AsyncIO Producer (experimental): Introduces `confluent_kafka.aio.AIOProducer` for
+- AsyncIO Producer (experimental): Introduces beta class `AIOProducer` for
   asynchronous message production in asyncio applications. This API offloads
   blocking librdkafka calls to a thread pool and schedules common callbacks
   (`error_cb`, `throttle_cb`, `stats_cb`, `oauth_cb`, `logger`) onto the event
   loop for safe usage inside async frameworks.
 
 ### Features
 
-- Batched async produce: `await aio.AIOProducer(...).produce(topic, value=...)`
+- Batched async produce: `await AIOProducer(...).produce(topic, value=...)`
   buffers messages and flushes when the buffer threshold or timeout is reached.
 - Async lifecycle: `await producer.flush()`, `await producer.purge()`, and
   transactional operations (`init_transactions`, `begin_transaction`,

DEVELOPER.md

@@ -62,7 +62,7 @@ C_INCLUDE_PATH=/path/to/include LIBRARY_PATH=/path/to/lib python -m build
 ## Project layout
 
 - `src/confluent_kafka/` — core sync client APIs
-- `src/confluent_kafka/aio/` — AsyncIO Producer/Consumer (first-class asyncio, not generated)
+- `src/confluent_kafka/experimental/aio/` — AsyncIO Producer/Consumer (first-class asyncio, not generated)
 - `src/confluent_kafka/schema_registry/` — Schema Registry clients and serdes
 - `tests/` — unit and integration tests (including async producer tests)
 - `examples/` — runnable samples (includes asyncio example)
@@ -103,14 +103,14 @@ python3 tools/unasync.py --check
 
 If you make any changes to the async code (in `src/confluent_kafka/schema_registry/_async` and `tests/integration/schema_registry/_async`), you **must** run this script to generate the sync counterparts (in `src/confluent_kafka/schema_registry/_sync` and `tests/integration/schema_registry/_sync`). Otherwise, this script will be run in CI with the `--check` flag and fail the build.
 
-Note: The AsyncIO Producer/Consumer under `src/confluent_kafka/aio/` are first-class asyncio implementations and are not generated using `unasync`.
+Note: The AsyncIO Producer/Consumer under `src/confluent_kafka/experimental/aio/` are first-class asyncio implementations and are not generated using `unasync`.
 
 ## AsyncIO Producer development (AIOProducer)
 
 Source:
 
-- `src/confluent_kafka/aio/producer/_AIOProducer.py` (public async API)
-- Internal modules in `src/confluent_kafka/aio/producer/` and helpers in `src/confluent_kafka/aio/_common.py`
+- `src/confluent_kafka/experimental/aio/producer/_AIOProducer.py` (public async API)
+- Internal modules in `src/confluent_kafka/experimental/aio/producer/` and helpers in `src/confluent_kafka/experimental/aio/_common.py`
 
 For a complete usage example, see [`examples/asyncio_example.py`](examples/asyncio_example.py).
 

README.md

@@ -27,7 +27,7 @@ Unlike the basic Apache Kafka Python client, `confluent-kafka-python` provides:
 
 - **High Performance & Reliability**: Built on [`librdkafka`](https://github.com/confluentinc/librdkafka), the battle-tested C client for Apache Kafka, ensuring maximum throughput, low latency, and stability. The client is supported by Confluent and is trusted in mission-critical production environments.
 - **Comprehensive Kafka Support**: Full support for the Kafka protocol, transactions, and administration APIs.
-- **AsyncIO Producer**: A fully asynchronous producer (`AIOProducer`) for seamless integration with modern Python applications using `asyncio`.
+- **Experimental; AsyncIO Producer**: An experimental fully asynchronous producer (`AIOProducer`) for seamless integration with modern Python applications using `asyncio`.
 - **Seamless Schema Registry Integration**: Synchronous and asynchronous clients for Confluent Schema Registry to handle schema management and serialization (Avro, Protobuf, JSON Schema).
 - **Improved Error Handling**: Detailed, context-aware error messages and exceptions to speed up debugging and troubleshooting.
 - **[Confluent Cloud] Automatic Zone Detection**: Producers automatically connect to brokers in the same availability zone, reducing latency and data transfer costs without requiring manual configuration.
@@ -60,7 +60,7 @@ Use the AsyncIO `Producer` inside async applications to avoid blocking the event
 
 ```python
 import asyncio
-from confluent_kafka.aio import AIOProducer
+from confluent_kafka.experimental.aio import AIOProducer
 
 async def main():
     p = AIOProducer({"bootstrap.servers": "mybroker"})
@@ -97,7 +97,6 @@ For a more detailed example that includes both an async producer and consumer, s
 
 The AsyncIO producer and consumer integrate seamlessly with async Schema Registry serializers. See the [Schema Registry Integration](#schema-registry-integration) section below for full details.
 
-**Migration Note:** If you previously used custom AsyncIO wrappers, you can now migrate to the official `AIOProducer` which handles thread pool management, callback scheduling, and cleanup automatically. See the [blog post](https://www.confluent.io/blog/kafka-python-asyncio-integration/) for migration guidance.
 ### Basic Producer example
 
 ```python
@@ -178,7 +177,7 @@ producer.flush()
 Use the `AsyncSchemaRegistryClient` and `Async` serializers with `AIOProducer` and `AIOConsumer`. The configuration is the same as the synchronous client.
 
 ```python
-from confluent_kafka.aio import AIOProducer
+from confluent_kafka.experimental.aio import AIOProducer
 from confluent_kafka.schema_registry import AsyncSchemaRegistryClient
 from confluent_kafka.schema_registry._async.avro import AsyncAvroSerializer
 
@@ -316,7 +315,7 @@ For source install, see the *Install from source* section in [INSTALL.md](INSTAL
 ## Broker compatibility
 
 The Python client (as well as the underlying C library librdkafka) supports
-all broker versions >= 0.8.
+all broker versions >= 0.8.
 But due to the nature of the Kafka protocol in broker versions 0.8 and 0.9 it
 is not safe for a client to assume what protocol version is actually supported
 by the broker, thus you will need to hint the Python client what protocol

aio_producer_simple_diagram.md

@@ -77,9 +77,9 @@ The `AIOProducer` implements a multi-component architecture designed for high-pe
 
 ### Source Code Location
 
-- **Main Implementation**: `src/confluent_kafka/aio/producer/_AIOProducer.py`
-- **Supporting Modules**: `src/confluent_kafka/aio/producer/` directory
-- **Common Utilities**: `src/confluent_kafka/aio/_common.py`
+- **Main Implementation**: `src/confluent_kafka/experimental/aio/producer/_AIOProducer.py`
+- **Supporting Modules**: `src/confluent_kafka/experimental/aio/producer/` directory
+- **Common Utilities**: `src/confluent_kafka/experimental/aio/_common.py`
 
 ### Design Principles
 

examples/README.md

@@ -11,7 +11,7 @@ The scripts in this directory provide various examples of using the Confluent Py
 
 ## AsyncIO Examples
 
-- [asyncio_example.py](asyncio_example.py): Comprehensive AsyncIO example demonstrating both AIOProducer and AIOConsumer with transactional operations, batched async produce, proper event loop integration, signal handling, and async callback patterns.
+- [asyncio_example.py](asyncio_example.py): Experimental comprehensive AsyncIO example demonstrating both AIOProducer and AIOConsumer with transactional operations, batched async produce, proper event loop integration, signal handling, and async callback patterns.
 - [asyncio_avro_producer.py](asyncio_avro_producer.py): Minimal AsyncIO Avro producer using `AsyncSchemaRegistryClient` and `AsyncAvroSerializer` (supports Confluent Cloud using `--sr-api-key`/`--sr-api-secret`).
 
 **Architecture:** For implementation details and component design, see the [AIOProducer Architecture Overview](../aio_producer_simple_diagram.md).
@@ -24,7 +24,7 @@ The AsyncIO producer works seamlessly with popular Python web frameworks:
 
 ```python
 from fastapi import FastAPI
-from confluent_kafka.aio import AIOProducer
+from confluent_kafka.experimental.aio import AIOProducer
 
 app = FastAPI()
 producer = None
@@ -45,7 +45,7 @@ async def create_event(data: dict):
 
 ```python
 from aiohttp import web
-from confluent_kafka.aio import AIOProducer
+from confluent_kafka.experimental.aio import AIOProducer
 
 async def init_app():
     app = web.Application()
@@ -66,7 +66,7 @@ For more details, see [Integrating Apache Kafka With Python Asyncio Web Applicat
 The AsyncIO producer and consumer work seamlessly with async Schema Registry serializers:
 
 ```python
-from confluent_kafka.aio import AIOProducer
+from confluent_kafka.experimental.aio import AIOProducer
 from confluent_kafka.schema_registry import AsyncSchemaRegistryClient
 from confluent_kafka.schema_registry._async.avro import AsyncAvroSerializer
 
@@ -163,15 +163,15 @@ producer_conf = {
 producer = Producer(producer_conf)
 ```
 
-### Asynchronous usage (AsyncIO)
+### Asynchronous usage (Experimental AsyncIO)
 
 Use async serializers with `AIOProducer` and `AIOConsumer`. Note that you must
 instantiate the serializer and then call it to serialize the data *before*
 producing.
 
 ```python
 # From examples/README.md
-from confluent_kafka.aio import AIOProducer
+from confluent_kafka.experimental.aio import AIOProducer
 from confluent_kafka.schema_registry import AsyncSchemaRegistryClient
 from confluent_kafka.schema_registry._async.avro import AsyncAvroSerializer
 

examples/asyncio_avro_producer.py

@@ -20,7 +20,7 @@
 import argparse
 import asyncio
 
-from confluent_kafka.aio import AIOProducer
+from confluent_kafka.experimental.aio import AIOProducer
 from confluent_kafka.schema_registry import AsyncSchemaRegistryClient
 from confluent_kafka.schema_registry._async.avro import AsyncAvroSerializer
 from confluent_kafka.serialization import SerializationContext, MessageField

examples/asyncio_example.py

@@ -16,8 +16,8 @@
 
 import asyncio
 import sys
-from confluent_kafka.aio import AIOProducer
-from confluent_kafka.aio import AIOConsumer
+from confluent_kafka.experimental.aio import AIOProducer
+from confluent_kafka.experimental.aio import AIOConsumer
 import random
 import logging
 import signal

src/confluent_kafka/__init__.py

@@ -49,6 +49,7 @@
 __all__ = [
     "admin",
     "Consumer",
+    "experimental",
     "KafkaError",
     "KafkaException",
     "kafkatest",

src/confluent_kafka/experimental/__init__.py

@@ -0,0 +1,20 @@
+# 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.
+
+"""
+Experimental APIs for confluent_kafka.
+
+These APIs are subject to change and may be removed or modified in
+incompatible ways in future releases.
+"""

src/confluent_kafka/aio/_AIOConsumer.py → src/confluent_kafka/experimental/aio/_AIOConsumer.py

@@ -15,7 +15,7 @@
 import asyncio
 import concurrent.futures
 import confluent_kafka
-import confluent_kafka.aio._common as _common
+from . import _common as _common
 
 
 class AIOConsumer:

src/confluent_kafka/aio/__init__.py → src/confluent_kafka/experimental/aio/__init__.py

@@ -14,4 +14,5 @@
 
 from ._AIOConsumer import AIOConsumer
 from .producer import AIOProducer
+
 __all__ = ['AIOConsumer', 'AIOProducer']

src/confluent_kafka/aio/producer/_AIOProducer.py → src/confluent_kafka/experimental/aio/producer/_AIOProducer.py

@@ -18,10 +18,10 @@
 
 import confluent_kafka
 
-import confluent_kafka.aio._common as _common
-from confluent_kafka.aio.producer._producer_batch_processor import ProducerBatchManager
-from confluent_kafka.aio.producer._kafka_batch_executor import ProducerBatchExecutor
-from confluent_kafka.aio.producer._buffer_timeout_manager import BufferTimeoutManager
+from .. import _common as _common
+from ._producer_batch_processor import ProducerBatchManager
+from ._kafka_batch_executor import ProducerBatchExecutor
+from ._buffer_timeout_manager import BufferTimeoutManager
 
 
 logger = logging.getLogger(__name__)

src/confluent_kafka/experimental/aio/producer/__init__.py

@@ -0,0 +1,23 @@
+# 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.
+
+"""
+Confluent Kafka Experimental AIOProducer Module
+
+This module contains all the components for the async Kafka producer.
+"""
+
+from ._AIOProducer import AIOProducer
+
+__all__ = ['AIOProducer']

src/confluent_kafka/aio/producer/_producer_batch_processor.py → src/confluent_kafka/experimental/aio/producer/_producer_batch_processor.py

@@ -16,7 +16,7 @@
 import logging
 
 from confluent_kafka import KafkaException as _KafkaException
-from confluent_kafka.aio.producer._message_batch import create_message_batch
+from ._message_batch import create_message_batch
 
 logger = logging.getLogger(__name__)
 

tests/ducktape/consumer_strategy.py

@@ -10,7 +10,7 @@
 import json
 import os
 from confluent_kafka import Consumer
-from confluent_kafka.aio import AIOConsumer
+from confluent_kafka.experimental.aio import AIOConsumer
 from confluent_kafka.schema_registry import SchemaRegistryClient
 from confluent_kafka.schema_registry._sync.json_schema import JSONDeserializer
 from confluent_kafka.schema_registry._sync.protobuf import ProtobufDeserializer

tests/ducktape/producer_strategy.py

@@ -393,7 +393,7 @@ async def build_serializers(self, serialization_type):
         return key_serializer, value_serializer
 
     def create_producer(self, config_overrides=None):
-        from confluent_kafka.aio import AIOProducer
+        from confluent_kafka.experimental.aio import AIOProducer
         # Enable logging for AIOProducer
         import logging
         logging.basicConfig(level=logging.INFO)

tests/test_AIOConsumer.py

@@ -6,7 +6,7 @@
 from unittest.mock import Mock, patch
 
 from confluent_kafka import TopicPartition, KafkaError, KafkaException
-from confluent_kafka.aio._AIOConsumer import AIOConsumer
+from confluent_kafka.experimental.aio._AIOConsumer import AIOConsumer
 
 
 class TestAIOConsumer:
@@ -15,13 +15,13 @@ class TestAIOConsumer:
     @pytest.fixture
     def mock_consumer(self):
         """Mock the underlying confluent_kafka.Consumer."""
-        with patch('confluent_kafka.aio._AIOConsumer.confluent_kafka.Consumer') as mock:
+        with patch('confluent_kafka.experimental.aio._AIOConsumer.confluent_kafka.Consumer') as mock:
             yield mock
 
     @pytest.fixture
     def mock_common(self):
         """Mock the _common module callback wrapping."""
-        with patch('confluent_kafka.aio._AIOConsumer._common') as mock:
+        with patch('confluent_kafka.experimental.aio._AIOConsumer._common') as mock:
             async def mock_async_call(executor, blocking_task, *args, **kwargs):
                 return blocking_task(*args, **kwargs)
             mock.async_call.side_effect = mock_async_call

tests/test_AIOProducer.py

@@ -10,20 +10,20 @@
 from unittest.mock import Mock, patch
 
 from confluent_kafka import KafkaError, KafkaException
-from confluent_kafka.aio.producer._AIOProducer import AIOProducer
+from confluent_kafka.experimental.aio.producer._AIOProducer import AIOProducer
 
 
 class TestAIOProducer:
     """Unit tests for AIOProducer class."""
 
     @pytest.fixture
     def mock_producer(self):
-        with patch('confluent_kafka.aio.producer._AIOProducer.confluent_kafka.Producer') as mock:
+        with patch('confluent_kafka.experimental.aio.producer._AIOProducer.confluent_kafka.Producer') as mock:
             yield mock
 
     @pytest.fixture
     def mock_common(self):
-        with patch('confluent_kafka.aio.producer._AIOProducer._common') as mock:
+        with patch('confluent_kafka.experimental.aio.producer._AIOProducer._common') as mock:
             async def mock_async_call(executor, blocking_task, *args, **kwargs):
                 return blocking_task(*args, **kwargs)
             mock.async_call.side_effect = mock_async_call

tests/test_kafka_batch_executor.py

@@ -6,7 +6,7 @@
 Kafka batch execution and partial failure handling.
 """
 
-from confluent_kafka.aio.producer._kafka_batch_executor import ProducerBatchExecutor as KafkaBatchExecutor
+from confluent_kafka.experimental.aio.producer._kafka_batch_executor import ProducerBatchExecutor as KafkaBatchExecutor
 import confluent_kafka
 import asyncio
 import unittest