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bzrlib/smart/server.py
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# Copyright (C) 2006-2010 Canonical Ltd
 
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# Copyright (C) 2006, 2007, 2008 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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                        if e.args[0] != errno.EBADF:
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                            trace.warning("listening socket error: %s", e)
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                    else:
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                        if self._should_terminate:
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                            break
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                        self.serve_conn(conn, thread_name_suffix)
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            except KeyboardInterrupt:
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                # dont log when CTRL-C'd.
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SmartTCPServer.hooks = SmartServerHooks()
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class SmartTCPServer_for_testing(SmartTCPServer):
 
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    """Server suitable for use by transport tests.
 
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    This server is backed by the process's cwd.
 
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    """
 
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    def __init__(self, thread_name_suffix=''):
 
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        SmartTCPServer.__init__(self, None)
 
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        self.client_path_extra = None
 
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        self.thread_name_suffix = thread_name_suffix
 
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    def get_backing_transport(self, backing_transport_server):
 
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        """Get a backing transport from a server we are decorating."""
 
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        return transport.get_transport(backing_transport_server.get_url())
 
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    def setUp(self, backing_transport_server=None,
 
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              client_path_extra='/extra/'):
 
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        """Set up server for testing.
 
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        :param backing_transport_server: backing server to use.  If not
 
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            specified, a LocalURLServer at the current working directory will
 
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            be used.
 
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        :param client_path_extra: a path segment starting with '/' to append to
 
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            the root URL for this server.  For instance, a value of '/foo/bar/'
 
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            will mean the root of the backing transport will be published at a
 
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            URL like `bzr://127.0.0.1:nnnn/foo/bar/`, rather than
 
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            `bzr://127.0.0.1:nnnn/`.  Default value is `extra`, so that tests
 
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            by default will fail unless they do the necessary path translation.
 
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        """
 
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        if not client_path_extra.startswith('/'):
 
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            raise ValueError(client_path_extra)
 
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        from bzrlib.transport.chroot import ChrootServer
 
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        if backing_transport_server is None:
 
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            from bzrlib.transport.local import LocalURLServer
 
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            backing_transport_server = LocalURLServer()
 
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        self.chroot_server = ChrootServer(
 
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            self.get_backing_transport(backing_transport_server))
 
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        self.chroot_server.setUp()
 
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        self.backing_transport = transport.get_transport(
 
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            self.chroot_server.get_url())
 
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        self.root_client_path = self.client_path_extra = client_path_extra
 
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        self.start_background_thread(self.thread_name_suffix)
 
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    def tearDown(self):
 
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        self.stop_background_thread()
 
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        self.chroot_server.tearDown()
 
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    def get_url(self):
 
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        url = super(SmartTCPServer_for_testing, self).get_url()
 
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        return url[:-1] + self.client_path_extra
 
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    def get_bogus_url(self):
 
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        """Return a URL which will fail to connect"""
 
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        return 'bzr://127.0.0.1:1/'
 
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class ReadonlySmartTCPServer_for_testing(SmartTCPServer_for_testing):
 
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    """Get a readonly server for testing."""
 
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    def get_backing_transport(self, backing_transport_server):
 
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        """Get a backing transport from a server we are decorating."""
 
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        url = 'readonly+' + backing_transport_server.get_url()
 
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        return transport.get_transport(url)
 
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class SmartTCPServer_for_testing_v2_only(SmartTCPServer_for_testing):
 
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    """A variation of SmartTCPServer_for_testing that limits the client to
 
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    using RPCs in protocol v2 (i.e. bzr <= 1.5).
 
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    """
 
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    def get_url(self):
 
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        url = super(SmartTCPServer_for_testing_v2_only, self).get_url()
 
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        url = 'bzr-v2://' + url[len('bzr://'):]
 
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        return url
 
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class ReadonlySmartTCPServer_for_testing_v2_only(SmartTCPServer_for_testing_v2_only):
 
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    """Get a readonly server for testing."""
 
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    def get_backing_transport(self, backing_transport_server):
 
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        """Get a backing transport from a server we are decorating."""
 
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        url = 'readonly+' + backing_transport_server.get_url()
 
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        return transport.get_transport(url)
 
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def _local_path_for_transport(transport):
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    """Return a local path for transport, if reasonably possible.
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        """Chroot transport, and decorate with userdir expander."""
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        self.base_path = self.get_base_path(transport)
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        chroot_server = chroot.ChrootServer(transport)
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        chroot_server.start_server()
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        self.cleanups.append(chroot_server.stop_server)
 
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        chroot_server.setUp()
 
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        self.cleanups.append(chroot_server.tearDown)
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        transport = get_transport(chroot_server.get_url())
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        if self.base_path is not None:
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            # Decorate the server's backing transport with a filter that can
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            # expand homedirs.
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            expand_userdirs = self._make_expand_userdirs_filter(transport)
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            expand_userdirs.start_server()
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            self.cleanups.append(expand_userdirs.stop_server)
 
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            expand_userdirs.setUp()
 
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            self.cleanups.append(expand_userdirs.tearDown)
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            transport = get_transport(expand_userdirs.get_url())
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        self.transport = transport
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