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87 lines
2.5 KiB
ReStructuredText
87 lines
2.5 KiB
ReStructuredText
.. _fastapi-redis-example:
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FastAPI + Redis example
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=======================
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.. meta::
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:keywords: Python,Dependency Injection,FastAPI,Redis,Example
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:description: This example demonstrates a usage of the FastAPI, Redis, and Dependency Injector.
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This example shows how to use ``Dependency Injector`` with `FastAPI <https://fastapi.tiangolo.com/>`_ and
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`Redis <https://redis.io/>`_.
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The source code is available on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/fastapi-redis>`_.
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Application structure
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---------------------
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Application has next structure:
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.. code-block:: bash
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./
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├── fastapiredis/
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│ ├── __init__.py
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│ ├── application.py
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│ ├── containers.py
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│ ├── redis.py
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│ ├── services.py
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│ └── tests.py
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├── docker-compose.yml
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├── Dockerfile
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└── requirements.txt
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Redis
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-----
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Module ``redis`` defines Redis connection pool initialization and shutdown. See ``fastapiredis/redis.py``:
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.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/redis.py
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:language: python
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Service
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-------
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Module ``services`` contains example service. Service has a dependency on Redis connection pool.
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It uses it for getting and setting a key asynchronously. Real life service will do something more meaningful.
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See ``fastapiredis/services.py``:
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.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/services.py
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:language: python
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Container
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---------
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Declarative container wires example service with Redis connection pool. See ``fastapiredis/containers.py``:
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.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/containers.py
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:language: python
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Application
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-----------
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Module ``application`` creates ``FastAPI`` app, setup endpoint, and init container.
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Endpoint ``index`` has a dependency on example service. The dependency is injected using :ref:`wiring` feature.
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Listing of ``fastapiredis/application.py``:
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.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/application.py
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:language: python
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Tests
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-----
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Tests use :ref:`provider-overriding` feature to replace example service with a mock. See ``fastapiredis/tests.py``:
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.. literalinclude:: ../../examples/miniapps/fastapi-redis/fastapiredis/tests.py
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:language: python
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:emphasize-lines: 24
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Sources
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-------
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The source code is available on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/fastapi-redis>`_.
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.. disqus::
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