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
|
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright (c) 2017 Cisco and/or its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import http.server
import io
import os
import socket
import socketserver
import sys
import threading
from vicn.core.resource_mgr import ResourceManager
from vicn.helpers.resource_definition import *
DEFAULT_GUI_ADDRESS = ''
DEFAULT_GUI_PORT = 8000
class GUIHandler(http.server.SimpleHTTPRequestHandler):
def send_head(self):
if self.path == '/js/settings.js':
return self.get_settings()
return super().send_head()
def get_settings(self):
host = self.request.getsockname()[0]
port = ResourceManager().get('websocket_port');
r = []
r.append("var URL='ws://{}:{}';\n".format(host, port))
enc = sys.getfilesystemencoding()
encoded = '\n'.join(r).encode(enc, 'surrogateescape')
f = io.BytesIO()
f.write(encoded)
f.seek(0)
self.send_response(http.server.HTTPStatus.OK)
self.send_header("Content-type", "text/javascript;")
self.send_header("Content-Length", str(len(encoded)))
self.end_headers()
return f
class GUI(Resource):
"""
Resource: GUI
This resource is empty on purpose. It is a temporary resource used as a
placeholder for controlling the GUI and should be deprecated in future
releases.
"""
address = Attribute(String, description = 'Address on which the Webserver listens',
default = DEFAULT_GUI_ADDRESS)
port = Attribute(Integer, description = 'Port on which the Webserver listens',
default = DEFAULT_GUI_PORT)
path = Attribute(String, default='www')
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
thread = threading.Thread(target = self.run)
thread.daemon = True
# XXX vICN should expose internal resources for interaction
try:
thread.start()
except KeyboardInterrupt:
server.shutdown()
sys.exit(0)
def run(self):
if not self.path.startswith(os.path.sep):
# XXX we might also search in the experiment folder
base_dir = os.path.join(os.path.dirname(__file__), os.path.pardir,
os.path.pardir)
web_dir = os.path.join(base_dir, self.path)
else:
web_dir = self.path
os.chdir(web_dir)
socketserver.TCPServer.allow_reuse_address = True
httpd = socketserver.TCPServer((self.address, self.port), GUIHandler)
httpd.serve_forever()
def __del__(self):
pass
|
