~bzr-pqm/bzr/bzr.dev

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
143
144
145
146
147
148
149
150
151
152
153
154
# Copyright (C) 2005 by Canonical Ltd

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

import BaseHTTPServer, SimpleHTTPServer, socket, errno, time
from bzrlib.selftest import TestCaseInTempDir


class WebserverNotAvailable(Exception):
    pass

class BadWebserverPath(ValueError):
    def __str__(self):
        return 'path %s is not in %s' % self.args

class TestingHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
    def log_message(self, format, *args):
        self.server.test_case.log("webserver - %s - - [%s] %s" %
                                  (self.address_string(),
                                   self.log_date_time_string(),
                                   format%args))

    def handle_one_request(self):
        """Handle a single HTTP request.

        You normally don't need to override this method; see the class
        __doc__ string for information on how to handle specific HTTP
        commands such as GET and POST.

        """
        for i in xrange(1,11): # Don't try more than 10 times
            try:
                self.raw_requestline = self.rfile.readline()
            except socket.error, e:
                if e.args[0] in (errno.EAGAIN, errno.EWOULDBLOCK):
                    # omitted for now because some tests look at the log of
                    # the server and expect to see no errors.  see recent
                    # email thread. -- mbp 20051021. 
                    ## self.log_message('EAGAIN (%d) while reading from raw_requestline' % i)
                    time.sleep(0.01)
                    continue
                raise
            else:
                break
        if not self.raw_requestline:
            self.close_connection = 1
            return
        if not self.parse_request(): # An error code has been sent, just exit
            return
        mname = 'do_' + self.command
        if not hasattr(self, mname):
            self.send_error(501, "Unsupported method (%r)" % self.command)
            return
        method = getattr(self, mname)
        method()

class TestingHTTPServer(BaseHTTPServer.HTTPServer):
    def __init__(self, server_address, RequestHandlerClass, test_case):
        BaseHTTPServer.HTTPServer.__init__(self, server_address,
                                                RequestHandlerClass)
        self.test_case = test_case


class TestCaseWithWebserver(TestCaseInTempDir):
    """Derived class that starts a localhost-only webserver
    (in addition to what TestCaseInTempDir does).

    This is useful for testing RemoteBranch.
    """

    _HTTP_PORTS = range(13000, 0x8000)

    def _http_start(self):
        import SimpleHTTPServer, BaseHTTPServer, socket, errno
        httpd = None
        for port in self._HTTP_PORTS:
            try:
                httpd = TestingHTTPServer(('localhost', port),
                                          TestingHTTPRequestHandler,
                                          self)
            except socket.error, e:
                if e.args[0] == errno.EADDRINUSE:
                    continue
                print >>sys.stderr, "Cannot run webserver :-("
                raise
            else:
                break

        if httpd is None:
            raise WebserverNotAvailable("Cannot run webserver :-( "
                                        "no free ports in range %s..%s" %
                                        (_HTTP_PORTS[0], _HTTP_PORTS[-1]))

        self._http_base_url = 'http://localhost:%s/' % port
        self._http_starting.release()
        httpd.socket.settimeout(0.1)

        while self._http_running:
            try:
                httpd.handle_request()
            except socket.timeout:
                pass

    def get_remote_url(self, path):
        import os

        path_parts = path.split(os.path.sep)
        if os.path.isabs(path):
            if path_parts[:len(self._local_path_parts)] != \
                   self._local_path_parts:
                raise BadWebserverPath(path, self.test_dir)
            remote_path = '/'.join(path_parts[len(self._local_path_parts):])
        else:
            remote_path = '/'.join(path_parts)

        self._http_starting.acquire()
        self._http_starting.release()
        return self._http_base_url + remote_path

    def setUp(self):
        TestCaseInTempDir.setUp(self)
        import threading, os
        self._local_path_parts = self.test_dir.split(os.path.sep)
        self._http_starting = threading.Lock()
        self._http_starting.acquire()
        self._http_running = True
        self._http_base_url = None
        self._http_thread = threading.Thread(target=self._http_start)
        self._http_thread.setDaemon(True)
        self._http_thread.start()
        self._http_proxy = os.environ.get("http_proxy")
        if self._http_proxy is not None:
            del os.environ["http_proxy"]

    def tearDown(self):
        self._http_running = False
        self._http_thread.join()
        if self._http_proxy is not None:
            import os
            os.environ["http_proxy"] = self._http_proxy
        TestCaseInTempDir.tearDown(self)