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
|
#!/usr/bin/env python
# Copyright 2015, Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""Manage TCP ports for unit tests; started by run_tests.py"""
import argparse
import BaseHTTPServer
import hashlib
import os
import socket
import sys
import time
argp = argparse.ArgumentParser(description='Server for httpcli_test')
argp.add_argument('-p', '--port', default=12345, type=int)
args = argp.parse_args()
print 'port server running on port %d' % args.port
pool = []
in_use = {}
with open(__file__) as f:
_MY_VERSION = hashlib.sha1(f.read()).hexdigest()
def refill_pool(max_timeout, req):
"""Scan for ports not marked for being in use"""
for i in range(1025, 32767):
if len(pool) > 100: break
if i in in_use:
age = time.time() - in_use[i]
if age < max_timeout:
continue
req.log_message("kill old request %d" % i)
del in_use[i]
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
try:
s.bind(('localhost', i))
req.log_message("found available port %d" % i)
pool.append(i)
except:
pass # we really don't care about failures
finally:
s.close()
def allocate_port(req):
global pool
global in_use
max_timeout = 600
while not pool:
refill_pool(max_timeout, req)
if not pool:
req.log_message("failed to find ports: retrying soon")
time.sleep(1)
max_timeout /= 2
port = pool[0]
pool = pool[1:]
in_use[port] = time.time()
return port
keep_running = True
class Handler(BaseHTTPServer.BaseHTTPRequestHandler):
def do_GET(self):
global keep_running
if self.path == '/get':
# allocate a new port, it will stay bound for ten minutes and until
# it's unused
self.send_response(200)
self.send_header('Content-Type', 'text/plain')
self.end_headers()
p = allocate_port(self)
self.log_message('allocated port %d' % p)
self.wfile.write('%d' % p)
elif self.path[0:6] == '/drop/':
self.send_response(200)
self.send_header('Content-Type', 'text/plain')
self.end_headers()
p = int(self.path[6:])
del in_use[p]
pool.append(p)
self.log_message('drop port %d' % p)
elif self.path == '/version':
# fetch a version string and the current process pid
self.send_response(200)
self.send_header('Content-Type', 'text/plain')
self.end_headers()
self.wfile.write(_MY_VERSION)
elif self.path == '/dump':
# yaml module is not installed on Macs and Windows machines by default
# so we import it lazily (/dump action is only used for debugging)
import yaml
self.send_response(200)
self.send_header('Content-Type', 'text/plain')
self.end_headers()
now = time.time()
self.wfile.write(yaml.dump({'pool': pool, 'in_use': dict((k, now - v) for k, v in in_use.iteritems())}))
elif self.path == '/quit':
self.send_response(200)
self.end_headers()
keep_running = False
httpd = BaseHTTPServer.HTTPServer(('', args.port), Handler)
while keep_running:
httpd.handle_request()
print 'done'
|
