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
|
import time
import BaseHTTPServer
import urlparse
import json
import os
__path__ = os.path.abspath(os.path.dirname(__file__))
server_registry = dict()
class MyHandler(BaseHTTPServer.BaseHTTPRequestHandler):
#hide log messages to stdout by default
def log_message(self, format, *args): pass
def do_HEAD(s):
s.send_response(200)
s.send_header("Content-type", "text/html")
s.end_headers()
def do_GET(s):
"""Respond to a GET request."""
#extract the path and set default
o = urlparse.urlparse(s.path)
args = server_registry[s.server]
path = o.path
if path == "/flow.png":
s.send_response(200)
s.send_header("Content-type", "image/png")
s.end_headers()
dot = args['top_block'].query(json.dumps(dict(path='/flows.dot')))
import subprocess
p = subprocess.Popen(args=["dot", "-T", "png"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(stdout, stderr) = p.communicate(input=dot)
s.wfile.write(stdout)
return
#handle json requests
if path.endswith('.json'):
s.send_response(200)
s.send_header("Content-type", "application/json")
s.end_headers()
if path == '/args.json':
arg_strs = dict((str(k), str(v)) for k, v in args.iteritems())
s.wfile.write(json.dumps(arg_strs))
else:
query_args = dict([(k,v) for k,v in urlparse.parse_qs(o.query).iteritems()])
query_args['path'] = path
json_args = json.dumps(query_args)
s.wfile.write(args['top_block'].query(json_args))
return
#clean up path for filesystem
if path.startswith('/'): path = path[1:]
if not path: path = 'main.html'
target = os.path.join(__path__, path)
#get files from the local file system
if os.path.exists(target):
s.send_response(200)
if target.endswith('.js'): s.send_header("Content-type", "text/javascript")
elif target.endswith('.css'): s.send_header("Content-type", "text/css")
else: s.send_header("Content-type", "text")
s.end_headers()
s.wfile.write(open(target).read())
#otherwise not found do 404
else:
s.send_response(404)
s.send_header("Content-type", "text/html")
s.end_headers()
s.wfile.write("<p>not found</p>")
import select
class http_server(object):
def __init__(self, args, **kwargs):
server_class = BaseHTTPServer.HTTPServer
self._httpd = server_class(args, MyHandler)
server_registry[self._httpd] = kwargs
def serve_forever(self):
while True:
try: self._httpd.serve_forever()
except select.error: pass
|
