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Viewing changes to bzrlib/selftest/HTTPTestUtil.py

  • Committer: Robert Collins
  • Date: 2005-10-02 22:47:02 UTC
  • mto: This revision was merged to the branch mainline in revision 1397.
  • Revision ID: robertc@robertcollins.net-20051002224701-8a8b20b90de559a6
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bzrlib/selftest/HTTPTestUtil.py
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# Copyright (C) 2005 by Canonical Ltd
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#
 
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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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#
 
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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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#
 
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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 os
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import bzrlib
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from bzrlib.tests import TestCaseWithTransport
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class TestCaseWithWebserver(TestCaseWithTransport):
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    """A support class that provides readonly urls that are http://.
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    This is done by forcing the readonly server to be an http one. This 
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    will current fail if the primary transport is not backed by regular disk
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    files.
 
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import BaseHTTPServer, SimpleHTTPServer, socket, errno, time
 
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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" %
 
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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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    def handle_one_request(self):
 
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        """Handle a single HTTP request.
 
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        You normally don't need to override this method; see the class
 
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        __doc__ string for information on how to handle specific HTTP
 
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        commands such as GET and POST.
 
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        """
 
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        for i in xrange(1,11): # Don't try more than 10 times
 
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            try:
 
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                self.raw_requestline = self.rfile.readline()
 
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            except socket.error, e:
 
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                if e.args[0] == errno.EAGAIN:
 
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                    self.log_message('EAGAIN (%d) while reading from raw_requestline' % i)
 
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                    time.sleep(0.01)
 
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                    continue
 
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                raise
 
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            else:
 
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                break
 
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        if not self.raw_requestline:
 
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            self.close_connection = 1
 
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            return
 
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        if not self.parse_request(): # An error code has been sent, just exit
 
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            return
 
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        mname = 'do_' + self.command
 
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        if not hasattr(self, mname):
 
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            self.send_error(501, "Unsupported method (%r)" % self.command)
 
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            return
 
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        method = getattr(self, mname)
 
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        method()
 
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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(0.1)
 
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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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        self.transport_readonly_server = bzrlib.transport.http.HttpServer
 
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        TestCaseInTempDir.setUp(self)
 
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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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        TestCaseInTempDir.tearDown(self)
 
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