python-dependency-injector/docs/examples/application-multiple-containers.rst
Roman Mogylatov bf978601ba
Refactor services miniapps (#291)
* Refactor services mini app with single container

* Make few little fixes to single container app

* Update requirements.txt for single container example

* Refactor multiple containers example

* Add single container docs page

* Create multiple containers page
2020-09-04 23:19:32 -04:00

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.. _application-multiple-containers:
Application example (multiple containers)
=========================================
.. meta::
:keywords: Python,Dependency Injection,Inversion of Control,Container,Example,Application,
Framework,AWS,boto3,client
:description: This example shows how you can create an application using multiple declarative
containers. We build an example Python micro application following the dependency
injection principle. It consists from several services with a domain logic that
have dependencies on database & AWS S3.
This example shows how you can create an application using multiple declarative containers. Using
multiple declarative containers is a good choice for a large application. For
building a moderate or a small size application refer to :ref:`application-single-container`.
We build an example micro application following the dependency injection principle. It consists
of several services with a domain logic. The services have dependencies on database & AWS S3.
.. image:: images/application.png
:width: 100%
:align: center
Start from the scratch or jump to the section:
.. contents::
:local:
:backlinks: none
You can find the source code and instructions for running on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/application-multiple-containers>`_.
Application structure
---------------------
Application consists of an ``example`` package, a configuration file and a ``requirements.txt``
file.
.. code-block:: bash
./
├── example/
│ ├── __init__.py
│ ├── __main__.py
│ ├── containers.py
│ └── services.py
├── config.yml
└── requirements.txt
Containers
----------
Listing of the ``example/containers.py``:
.. literalinclude:: ../../examples/miniapps/application-multiple-containers/example/containers.py
:language: python
Main module
-----------
Listing of the ``example/__main__.py``:
.. literalinclude:: ../../examples/miniapps/application-multiple-containers/example/__main__.py
:language: python
Services
--------
Listing of the ``example/services.py``:
.. literalinclude:: ../../examples/miniapps/application-multiple-containers/example/services.py
:language: python
Configuration
-------------
Listing of the ``config.yml``:
.. literalinclude:: ../../examples/miniapps/application-multiple-containers/config.yml
:language: yaml
Run the application
-------------------
You can find the source code and instructions for running on the `Github <https://github.com/ets-labs/python-dependency-injector/tree/master/examples/miniapps/application-multiple-containers>`_.
.. disqus::