Upgrade redis (apache#31279)

Upgrade redis to 4.5.5

Upgrading redis package >= 4 doesn't require code changes. Changes in Redis 4 only brings into impact when we are directly importing redis.client to execute the commands, which we are not doing. The issue with unquoting URLS with urllib.parse.unquote is also not applicable to airflow, because we are not using the from_url function

airflow/providers/redis/provider.yaml

@@ -35,11 +35,7 @@ versions:
 
 dependencies:
   - apache-airflow>=2.4.0
-  # Redis 4 introduced a number of changes that likely need testing including mixins in redis commands
-  # as well as unquoting URLS with `urllib.parse.unquote`:
-  # https://github.com/redis/redis-py/blob/master/CHANGES
-  # TODO: upgrade to support redis package >=4
-  - redis~=3.2
+  - redis>=3.2.0
 
 integrations:
   - integration-name: Redis

docs/apache-airflow-providers-redis/index.rst

@@ -32,9 +32,16 @@ Content
     :maxdepth: 1
     :caption: Resources
 
+    Example DAGs <https://github.com/apache/airflow/tree/providers-redis/|version|/tests/system/providers/redis>
     PyPI Repository <https://pypi.org/project/apache-airflow-providers-redis/>
     Installing from sources <installing-providers-from-sources>
 
+.. toctree::
+    :hidden:
+    :caption: System tests
+
+    System Tests <_api/tests/system/providers/redis/index>
+
 .. THE REMAINDER OF THE FILE IS AUTOMATICALLY GENERATED. IT WILL BE OVERWRITTEN AT RELEASE TIME!
 
 
@@ -73,7 +80,7 @@ Requirements
 PIP package         Version required
 ==================  ==================
 ``apache-airflow``  ``>=2.3.0``
-``redis``           ``~=3.2``
+``redis``           ``>=3.2.0``
 ==================  ==================
 
 .. include:: ../../airflow/providers/redis/CHANGELOG.rst

generated/provider_dependencies.json

@@ -647,7 +647,7 @@
   "redis": {
     "deps": [
       "apache-airflow>=2.4.0",
-      "redis~=3.2"
+      "redis>=3.2.0"
     ],
     "cross-providers-deps": []
   },

tests/system/providers/redis/__init__.py

@@ -0,0 +1,16 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.

tests/system/providers/redis/example_redis_publish.py

@@ -0,0 +1,95 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+"""
+This is an example DAG which uses RedisPublishOperator, RedisPubSubSensor and RedisKeySensor.
+In this example, we create 3 tasks which execute sequentially.
+The first task is to publish a particular message to redis using the RedisPublishOperator.
+The second task is to wait for a particular message at a particular channel to arrive in redis
+using the RedisPubSubSensor, and the third task is to wait for a particular key to arrive in
+redis using the RedisKeySensor.
+
+"""
+from __future__ import annotations
+
+import os
+from datetime import datetime
+
+# [START import_module]
+from airflow import DAG
+from airflow.providers.redis.operators.redis_publish import RedisPublishOperator
+from airflow.providers.redis.sensors.redis_key import RedisKeySensor
+from airflow.providers.redis.sensors.redis_pub_sub import RedisPubSubSensor
+
+# [END import_module]
+# [START instantiate_dag]
+ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
+
+default_args = {
+    "start_date": datetime(2023, 5, 15),
+    "max_active_runs": 1,
+}
+
+with DAG(
+    dag_id="redis_example",
+    default_args=default_args,
+) as dag:
+    # [START RedisPublishOperator_DAG]
+    publish_task = RedisPublishOperator(
+        task_id="publish_task",
+        redis_conn_id="redis_default",
+        channel="your_channel",
+        message="Start processing",
+        dag=dag,
+    )
+
+    # [END RedisPublishOperator_DAG]
+
+    # [START RedisPubSubSensor_DAG]
+    pubsub_sensor_task = RedisPubSubSensor(
+        task_id="pubsub_sensor_task",
+        redis_conn_id="redis_default",
+        channels="your_channel",
+        dag=dag,
+        timeout=600,
+        poke_interval=30,
+    )
+    # [END RedisPubSubSensor_DAG]
+
+    # [START RedisKeySensor_DAG]
+    key_sensor_task = RedisKeySensor(
+        task_id="key_sensor_task",
+        redis_conn_id="redis_default",
+        key="your_key",
+        dag=dag,
+        timeout=600,
+        poke_interval=30,
+    )
+    # [END RedisKeySensor_DAG]
+
+    publish_task >> pubsub_sensor_task >> key_sensor_task
+
+    from tests.system.utils.watcher import watcher
+
+    # This test needs watcher in order to properly mark success/failure
+    # when "tearDown" task with trigger rule is part of the DAG
+    list(dag.tasks) >> watcher()
+
+from tests.system.utils import get_test_run  # noqa: E402
+
+# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
+test_run = get_test_run(dag)