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Viewing changes to bzrlib/selftest/HTTPTestUtil.py

  • Committer: Martin Pool
  • Date: 2005-05-03 08:00:27 UTC
  • Revision ID: mbp@sourcefrog.net-20050503080027-908edb5b39982198
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bzrlib/selftest/HTTPTestUtil.py
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# Copyright (C) 2005 by Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import BaseHTTPServer, SimpleHTTPServer
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from bzrlib.selftest import TestCaseInTempDir
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class WebserverNotAvailable(Exception):
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    pass
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class BadWebserverPath(ValueError):
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    def __str__(self):
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        return 'path %s is not in %s' % self.args
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class TestingHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
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    def log_message(self, format, *args):
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        self.server.test_case.log("webserver - %s - - [%s] %s\n" %
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                                  (self.address_string(),
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                                   self.log_date_time_string(),
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                                   format%args))
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class TestingHTTPServer(BaseHTTPServer.HTTPServer):
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    def __init__(self, server_address, RequestHandlerClass, test_case):
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        BaseHTTPServer.HTTPServer.__init__(self, server_address,
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                                                RequestHandlerClass)
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        self.test_case = test_case
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class TestCaseWithWebserver(TestCaseInTempDir):
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    """Derived class that starts a localhost-only webserver
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    (in addition to what TestCaseInTempDir does).
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    This is useful for testing RemoteBranch.
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    """
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    _HTTP_PORTS = range(13000, 0x8000)
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    def _http_start(self):
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        import SimpleHTTPServer, BaseHTTPServer, socket, errno
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        httpd = None
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        for port in self._HTTP_PORTS:
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            try:
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                httpd = TestingHTTPServer(('localhost', port),
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                                          TestingHTTPRequestHandler,
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                                          self)
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            except socket.error, e:
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                if e.args[0] == errno.EADDRINUSE:
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                    continue
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                print >>sys.stderr, "Cannot run webserver :-("
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                raise
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            else:
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                break
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        if httpd is None:
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            raise WebserverNotAvailable("Cannot run webserver :-( "
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                                        "no free ports in range %s..%s" %
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                                        (_HTTP_PORTS[0], _HTTP_PORTS[-1]))
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        self._http_base_url = 'http://localhost:%s/' % port
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        self._http_starting.release()
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        httpd.socket.settimeout(1)
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        while self._http_running:
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            try:
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                httpd.handle_request()
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            except socket.timeout:
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                pass
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    def get_remote_url(self, path):
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        import os
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        path_parts = path.split(os.path.sep)
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        if os.path.isabs(path):
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            if path_parts[:len(self._local_path_parts)] != \
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                   self._local_path_parts:
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                raise BadWebserverPath(path, self.test_dir)
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            remote_path = '/'.join(path_parts[len(self._local_path_parts):])
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        else:
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            remote_path = '/'.join(path_parts)
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        self._http_starting.acquire()
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        self._http_starting.release()
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        return self._http_base_url + remote_path
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    def setUp(self):
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        super(TestCaseWithWebserver, self).setUp()
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        import threading, os
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        self._local_path_parts = self.test_dir.split(os.path.sep)
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        self._http_starting = threading.Lock()
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        self._http_starting.acquire()
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        self._http_running = True
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        self._http_base_url = None
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        self._http_thread = threading.Thread(target=self._http_start)
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        self._http_thread.setDaemon(True)
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        self._http_thread.start()
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    def tearDown(self):
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        self._http_running = False
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        self._http_thread.join()
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        super(TestCaseWithWebserver, self).tearDown()