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app.py
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app.py
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import logging
import os
from flask import Flask, jsonify, request
from cache import cache
def create_app(test_config=None):
"""Create and configure an instance of the Flask application."""
app = Flask(__name__, instance_relative_config=True)
if test_config is None:
configure_app(app)
else:
app.config.update(test_config)
@app.before_request
def log_request_info():
app.logger.debug('Headers: %s', request.headers)
app.logger.debug('Body: %s', request.get_data())
cache.init_app(app)
from main import api
app.register_blueprint(api)
@app.route('/healthcheck', methods=['GET'])
def healthcheck():
return 'OK'
@app.route('/version', methods=['GET'])
def version():
return jsonify(
{"created": os.environ['CREATED'],
"revision": os.environ['REVISION'],
"version": os.environ['VERSION']
}
)
return app
def configure_app(app):
""" Loads a different set of configurations depending on the desired environment
:param app: Flask app instance
"""
app.config.from_object('config.ProductionConfig')
if app.config['ENV'] == 'development':
app.config.from_object('config.DevelopmentConfig')
elif app.config['ENV'] == 'testing':
app.config.from_object('config.TestingConfig')
if 'SECRETS_FILE' in os.environ:
try:
app.config.from_envvar('SECRETS_FILE')
except SyntaxError:
app.logger.error("Invalid secret file '{}', aborting...", os.environ['SECRETS_FILE'])
elif 'QUANDL_API_KEY' in os.environ:
try:
app.config['QUANDL_API_KEY'] = os.environ['QUANDL_API_KEY']
except SyntaxError:
app.logger.error("Invalid Quandl API key '{}', aborting...", os.environ['QUANDL_API_KEY'])
else:
app.logger.error("Required Quandl API key not provided, aborting...")
app.logger.info("Configuration loaded successfully")
# The following libraries gives excessive logging, so fine tuning is needed
logging.getLogger("urllib3").setLevel(logging.WARNING)
if __name__ == '__main__':
app = create_app()
app.run(host="0.0.0.0")