1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
import flask_socketio
import json
import os
import sys
import traceback
import urllib.request
from flask import Flask, request, send_from_directory, jsonify
from flask_compress import Compress
from oauth2client import client, crypt
from flask_cors import CORS
from dotenv import load_dotenv
from opendc.models.user import User
from opendc.util import rest, path_parser, database
from opendc.util.exceptions import AuthorizationTokenError, RequestInitializationError
load_dotenv()
TEST_MODE = "OPENDC_FLASK_TESTING" in os.environ
# Specify the directory of static assets
if TEST_MODE:
STATIC_ROOT = os.curdir
else:
STATIC_ROOT = os.path.join(os.environ['OPENDC_ROOT_DIR'], 'frontend', 'build')
# 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['OPENDC_DB_HOST'] if 'OPENDC_DB_HOST' in os.environ else 'localhost')
# Set up the core app
FLASK_CORE_APP = Flask(__name__, static_url_path='', static_folder=STATIC_ROOT)
FLASK_CORE_APP.config['SECRET_KEY'] = os.environ['OPENDC_FLASK_SECRET']
# Set up CORS support for local setups
if 'localhost' in os.environ['OPENDC_SERVER_BASE_URL']:
CORS(FLASK_CORE_APP)
compress = Compress()
compress.init_app(FLASK_CORE_APP)
if 'OPENDC_SERVER_BASE_URL' in os.environ or 'localhost' in os.environ['OPENDC_SERVER_BASE_URL']:
SOCKET_IO_CORE = flask_socketio.SocketIO(FLASK_CORE_APP, cors_allowed_origins="*")
else:
SOCKET_IO_CORE = flask_socketio.SocketIO(FLASK_CORE_APP)
@FLASK_CORE_APP.errorhandler(404)
def page_not_found(e):
return send_from_directory(STATIC_ROOT, 'index.html')
@FLASK_CORE_APP.route('/tokensignin', methods=['POST'])
def sign_in():
"""Authenticate a user with Google sign in"""
try:
token = request.form['idtoken']
except KeyError:
return 'No idtoken provided', 401
try:
idinfo = client.verify_id_token(token, os.environ['OPENDC_OAUTH_CLIENT_ID'])
if idinfo['aud'] != os.environ['OPENDC_OAUTH_CLIENT_ID']:
raise crypt.AppIdentityError('Unrecognized client.')
if idinfo['iss'] not in ['accounts.google.com', 'https://accounts.google.com']:
raise crypt.AppIdentityError('Wrong issuer.')
except ValueError:
url = "https://www.googleapis.com/oauth2/v3/tokeninfo?id_token={}".format(token)
req = urllib.request.Request(url)
response = urllib.request.urlopen(url=req, timeout=30)
res = response.read()
idinfo = json.loads(res)
except crypt.AppIdentityError as e:
return 'Did not successfully authenticate'
user = User.from_google_id(idinfo['sub'])
data = {'isNewUser': user.obj is None}
if user.obj is not None:
data['userId'] = user.get_id()
return jsonify(**data)
@FLASK_CORE_APP.route('/api/<string:version>/<path:endpoint_path>', methods=['GET', 'POST', 'PUT', 'DELETE'])
def api_call(version, endpoint_path):
"""Call an API endpoint directly over HTTP."""
# 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
@FLASK_CORE_APP.route('/my-auth-token')
def serve_web_server_test():
"""Serve the web server test."""
return send_from_directory(STATIC_ROOT, 'index.html')
@FLASK_CORE_APP.route('/')
@FLASK_CORE_APP.route('/simulations')
@FLASK_CORE_APP.route('/simulations/<path:simulation_id>')
@FLASK_CORE_APP.route('/simulations/<path:simulation_id>/experiments')
@FLASK_CORE_APP.route('/simulations/<path:simulation_id>/experiments/<path:experiment_id>')
@FLASK_CORE_APP.route('/profile')
def serve_index(simulation_id=None, experiment_id=None):
return send_from_directory(STATIC_ROOT, 'index.html')
@SOCKET_IO_CORE.on('request')
def receive_message(message):
""""Receive a SocketIO request"""
(req, res) = _process_message(message)
print(f'Socket: {req.method} to `/{req.path}` resulted in {res.status["code"]}: {res.status["description"]}')
sys.stdout.flush()
flask_socketio.emit('response', res.to_JSON(), json=True)
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__':
print("Web server started on 8081")
SOCKET_IO_CORE.run(FLASK_CORE_APP, host='0.0.0.0', port=8081)
|
