2 from random import choice
3 from urlparse import urlparse, urlunparse
5 from twisted.internet import reactor, defer
6 from twisted.trial import unittest
7 from twisted.web2 import stream as stream_mod
9 from HTTPDownloader import HTTPClientManager
15 def get(self, locations, method="GET", modtime=None):
16 """Download from a list of peers.
18 @type locations: C{list} of C{string}
19 @var locations: a list of the locations where the file can be found
21 url = choice(locations)
22 parsed = urlparse(url)
23 assert(parsed[0] == "http", "Only HTTP is supported, not '%s'" % parsed[0])
25 path = urlunparse(('', '') + parsed[2:])
27 # Make sure a port is included for consistency
28 if host.find(':') >= 0:
29 host, port = host.split(':', 1)
33 return self.getPeer(host, port, path, method, modtime)
35 def getPeer(self, host, port, path, method="GET", modtime=None):
38 site = host + ":" + str(port)
39 if site not in self.clients:
40 self.clients[site] = HTTPClientManager(host, port)
41 return self.clients[site].get(path, method, modtime)
44 for site in self.clients:
45 self.clients[site].close()
48 class TestPeerManager(unittest.TestCase):
49 """Unit tests for the PeerManager."""
54 def gotResp(self, resp, num, expect):
55 self.failUnless(resp.code >= 200 and resp.code < 300, "Got a non-200 response: %r" % resp.code)
56 if expect is not None:
57 self.failUnless(resp.stream.length == expect, "Length was incorrect, got %r, expected %r" % (resp.stream.length, expect))
62 stream_mod.readStream(resp.stream, print_).addCallback(printdone)
64 def test_download(self):
65 self.manager = PeerManager()
68 host = 'www.camrdale.org'
69 d = self.manager.get(['http://' + host + '/robots.txt'])
70 d.addCallback(self.gotResp, 1, 309)
74 self.manager = PeerManager()
77 host = 'www.camrdale.org'
78 d = self.manager.get(['http://' + host + '/robots.txt'], "HEAD")
79 d.addCallback(self.gotResp, 1, 0)
82 def test_multiple_downloads(self):
83 self.manager = PeerManager()
85 lastDefer = defer.Deferred()
87 def newRequest(host, path, num, expect, last=False):
88 d = self.manager.get(['http://' + host + ':' + str(80) + path])
89 d.addCallback(self.gotResp, num, expect)
91 d.addBoth(lastDefer.callback)
93 newRequest('www.camrdale.org', "/", 1, 3433)
94 newRequest('www.camrdale.org', "/blog/", 2, 37121)
95 newRequest('www.google.ca', "/", 3, None)
96 self.pending_calls.append(reactor.callLater(1, newRequest, 'www.sfu.ca', '/', 4, None))
97 self.pending_calls.append(reactor.callLater(10, newRequest, 'www.camrdale.org', '/wikilink.html', 5, 3084))
98 self.pending_calls.append(reactor.callLater(30, newRequest, 'www.camrdale.org', '/sitemap.html', 6, 4750))
99 self.pending_calls.append(reactor.callLater(31, newRequest, 'www.sfu.ca', '/studentcentral/index.html', 7, None))
100 self.pending_calls.append(reactor.callLater(32, newRequest, 'www.camrdale.org', '/openid.html', 8, 2525))
101 self.pending_calls.append(reactor.callLater(32, newRequest, 'www.camrdale.org', '/subpage.html', 9, 2381))
102 self.pending_calls.append(reactor.callLater(62, newRequest, 'www.google.ca', '/intl/en/options/', 0, None, True))
106 for p in self.pending_calls:
109 self.pending_calls = []