feat: Add Redis-backed session service to ADK community extensions

.gitignore

@@ -0,0 +1,80 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Virtual Environment
+venv/
+ENV/
+env/
+.env
+.venv
+env.bak/
+venv.bak/
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+.DS_Store
+
+# Testing
+.coverage
+htmlcov/
+.tox/
+.nox/
+.pytest_cache/
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# Logs
+*.log
+logs/
+log/
+
+# Local development settings
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+uv.lock
+
+# Google Cloud specific
+.gcloudignore
+.gcloudignore.local
+
+# Documentation
+docs/_build/
+site/
+
+# Misc
+Thumbs.db
+*.bak
+*.tmp
+*.temp

pyproject.toml

@@ -25,9 +25,11 @@ classifiers = [ # List of https://pypi.org/classifiers/
 ]
 dependencies = [
   # go/keep-sorted start
-  "google-genai>=1.21.1, <2.0.0",                           # Google GenAI SDK
-  "google-adk",                                             # Google ADK
+  "google-genai>=1.21.1, <2.0.0", # Google GenAI SDK
+  "google-adk", # Google ADK
+  "redis>=5.0.0, <6.0.0", # Redis for session storage
   # go/keep-sorted end
+  "orjson>=3.11.3",
 ]
 dynamic = ["version"]
 
@@ -61,6 +63,12 @@ pyink-annotation-pragmas = [
 requires = ["flit_core >=3.8,<4"]
 build-backend = "flit_core.buildapi"
 
+[dependency-groups]
+dev = [
+    "pytest>=8.4.2",
+    "pytest-asyncio>=1.2.0",
+]
+
 
 [tool.flit.sdist]
 include = ['src/**/*', 'README.md', 'pyproject.toml', 'LICENSE']

src/google/adk_community/sessions/__init__.py

@@ -0,0 +1,19 @@
+# Copyright 2025 Google LLC
+#
+# 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.
+
+"""Community session services for ADK."""
+
+from .redis_session_service import RedisSessionService
+
+__all__ = ["RedisMemorySessionService"]