2 from random import choice
3 from urlparse import urlparse, urlunparse
5 from twisted.internet import reactor, defer
6 from twisted.python import log
7 from twisted.trial import unittest
8 from twisted.web2 import stream as stream_mod
9 from twisted.web2.http import splitHostPort
11 from HTTPDownloader import HTTPClientManager
17 def get(self, locations, method="GET", modtime=None):
18 """Download from a list of peers.
20 @type locations: C{list} of C{string}
21 @var locations: a list of the locations where the file can be found
23 url = choice(locations)
24 log.msg('Downloading %s' % url)
25 parsed = urlparse(url)
26 assert parsed[0] == "http", "Only HTTP is supported, not '%s'" % parsed[0]
27 host, port = splitHostPort(parsed[0], parsed[1])
28 path = urlunparse(('', '') + parsed[2:])
30 return self.getPeer(host, port, path, method, modtime)
32 def getPeer(self, host, port, path, method="GET", modtime=None):
35 site = host + ":" + str(port)
36 if site not in self.clients:
37 self.clients[site] = HTTPClientManager(host, port)
38 return self.clients[site].get(path, method, modtime)
41 for site in self.clients:
42 self.clients[site].close()
45 class TestPeerManager(unittest.TestCase):
46 """Unit tests for the PeerManager."""
51 def gotResp(self, resp, num, expect):
52 self.failUnless(resp.code >= 200 and resp.code < 300, "Got a non-200 response: %r" % resp.code)
53 if expect is not None:
54 self.failUnless(resp.stream.length == expect, "Length was incorrect, got %r, expected %r" % (resp.stream.length, expect))
59 stream_mod.readStream(resp.stream, print_).addCallback(printdone)
61 def test_download(self):
62 self.manager = PeerManager()
65 host = 'www.camrdale.org'
66 d = self.manager.get(['http://' + host + '/robots.txt'])
67 d.addCallback(self.gotResp, 1, 309)
71 self.manager = PeerManager()
74 host = 'www.camrdale.org'
75 d = self.manager.get(['http://' + host + '/robots.txt'], "HEAD")
76 d.addCallback(self.gotResp, 1, 0)
79 def test_multiple_downloads(self):
80 self.manager = PeerManager()
82 lastDefer = defer.Deferred()
84 def newRequest(host, path, num, expect, last=False):
85 d = self.manager.get(['http://' + host + ':' + str(80) + path])
86 d.addCallback(self.gotResp, num, expect)
88 d.addBoth(lastDefer.callback)
90 newRequest('www.camrdale.org', "/", 1, 3433)
91 newRequest('www.camrdale.org', "/blog/", 2, 39152)
92 newRequest('www.google.ca', "/", 3, None)
93 self.pending_calls.append(reactor.callLater(1, newRequest, 'www.sfu.ca', '/', 4, None))
94 self.pending_calls.append(reactor.callLater(10, newRequest, 'www.camrdale.org', '/wikilink.html', 5, 3084))
95 self.pending_calls.append(reactor.callLater(30, newRequest, 'www.camrdale.org', '/sitemap.html', 6, 4756))
96 self.pending_calls.append(reactor.callLater(31, newRequest, 'www.sfu.ca', '/studentcentral/index.html', 7, None))
97 self.pending_calls.append(reactor.callLater(32, newRequest, 'www.camrdale.org', '/openid.html', 8, 2525))
98 self.pending_calls.append(reactor.callLater(32, newRequest, 'www.camrdale.org', '/subpage.html', 9, 2381))
99 self.pending_calls.append(reactor.callLater(62, newRequest, 'www.google.ca', '/intl/en/options/', 0, None, True))
103 for p in self.pending_calls:
106 self.pending_calls = []