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app.py
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app.py
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import flask
import flask_injector
import injector
from redis import StrictRedis
import providers
INJECTOR_DEFAULT_MODULES = dict(
redis_client=providers.RedisClientModule(),
)
def _configure_dependency_injection(
flask_app, injector_modules, custom_injector
) -> None:
modules = dict(INJECTOR_DEFAULT_MODULES)
if injector_modules:
modules.update(injector_modules)
flask_injector.FlaskInjector(
app=flask_app,
injector=custom_injector,
modules=modules.values(),
)
def create_app(
*,
custom_injector: injector.Injector=None,
injector_modules=None,
):
app = flask.Flask(__name__)
app.config.update(
{'redis_port': 6379,
'redis_host': 'localhost'}
)
@app.route('/')
def hello_world():
return 'hello world'
@injector.inject
@app.route('/calculate')
def calculate(redis_client: StrictRedis):
# redis dependency is injected
redis_client.set('foo', 'bar')
value = redis_client.get('foo')
return value.decode('utf-8')
_configure_dependency_injection(
app, injector_modules, custom_injector)
return app
if __name__=='__main__':
application = create_app()
application.run()