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https://github.com/ets-labs/python-dependency-injector.git
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39 lines
808 B
Python
39 lines
808 B
Python
"""`Singleton` - Flask request scope example."""
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from dependency_injector import containers, providers
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from flask import Flask, current_app
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class Service:
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...
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class Container(containers.DeclarativeContainer):
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service_provider = providers.ThreadLocalSingleton(Service)
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def index_view():
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service_1 = current_app.container.service_provider()
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service_2 = current_app.container.service_provider()
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assert service_1 is service_2
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print(service_1)
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return "Hello World!"
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def teardown_context(request):
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current_app.container.service_provider.reset()
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return request
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container = Container()
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app = Flask(__name__)
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app.container = container
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app.add_url_rule("/", "index", view_func=index_view)
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app.after_request(teardown_context)
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if __name__ == "__main__":
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app.run()
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