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#!/usr/bin/env python3
import json
import os
import sys
import traceback
from dotenv import load_dotenv
from flask import Flask, request, jsonify
from flask_compress import Compress
from flask_cors import CORS
from opendc.util import rest, path_parser, database
from opendc.util.auth import AuthError, AuthManager, AsymmetricJwtAlgorithm
from opendc.util.exceptions import AuthorizationTokenError, RequestInitializationError
from opendc.util.json import JSONEncoder
load_dotenv()
TEST_MODE = "OPENDC_FLASK_TESTING" in os.environ
# Setup Sentry if DSN is specified
if 'SENTRY_DSN' in os.environ:
import sentry_sdk
from sentry_sdk.integrations.flask import FlaskIntegration
sentry_sdk.init(
integrations=[FlaskIntegration()],
traces_sample_rate=0.1
)
# Set up database if not testing
if not TEST_MODE:
database.DB.initialize_database(
user=os.environ['OPENDC_DB_USERNAME'],
password=os.environ['OPENDC_DB_PASSWORD'],
database=os.environ['OPENDC_DB'],
host=os.environ.get('OPENDC_DB_HOST', 'localhost'))
# Set up the core app
app = Flask("opendc")
app.testing = TEST_MODE
app.config['SECRET_KEY'] = os.environ['OPENDC_FLASK_SECRET']
app.json_encoder = JSONEncoder
# Set up CORS support
CORS(app)
compress = Compress()
compress.init_app(app)
auth = AuthManager(AsymmetricJwtAlgorithm(jwks_url=f"https://{os.environ['AUTH0_DOMAIN']}/.well-known/jwks.json"),
issuer=f"https://{os.environ['AUTH0_DOMAIN']}/", audience=os.environ['AUTH0_AUDIENCE'])
API_VERSIONS = {'v2'}
@app.errorhandler(AuthError)
def handle_auth_error(ex):
response = jsonify(ex.error)
response.status_code = ex.status_code
return response
@app.route('/<string:version>/<path:endpoint_path>', methods=['GET', 'POST', 'PUT', 'DELETE'])
@auth.require
def api_call(version, endpoint_path):
"""Call an API endpoint directly over HTTP."""
# Check whether given version is valid
if version not in API_VERSIONS:
return jsonify(error='API version not found'), 404
# Get path and parameters
(path, path_parameters) = path_parser.parse(version, endpoint_path)
query_parameters = request.args.to_dict()
for param in query_parameters:
try:
query_parameters[param] = int(query_parameters[param])
except:
pass
try:
body_parameters = json.loads(request.get_data())
except:
body_parameters = {}
# Create and call request
(req, response) = _process_message({
'id': 0,
'method': request.method,
'parameters': {
'body': body_parameters,
'path': path_parameters,
'query': query_parameters
},
'path': path,
'token': request.headers.get('auth-token')
})
print(
f'HTTP:\t{req.method} to `/{req.path}` resulted in {response.status["code"]}: {response.status["description"]}')
sys.stdout.flush()
flask_response = jsonify(json.loads(response.to_JSON()))
flask_response.status_code = response.status['code']
return flask_response
def _process_message(message):
"""Process a request message and return the response."""
try:
req = rest.Request(message)
res = req.process()
return req, res
except AuthorizationTokenError:
res = rest.Response(401, 'Authorization error')
res.id = message['id']
except RequestInitializationError as e:
res = rest.Response(400, str(e))
res.id = message['id']
if not 'method' in message:
message['method'] = 'UNSPECIFIED'
if not 'path' in message:
message['path'] = 'UNSPECIFIED'
except Exception:
res = rest.Response(500, 'Internal server error')
if 'id' in message:
res.id = message['id']
traceback.print_exc()
req = rest.Request()
req.method = message['method']
req.path = message['path']
return req, res
if __name__ == '__main__':
app.run()
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