Rev 2563: Add new BrokenRenameTransportDecorator in http://sourcefrog.net/bzr/dlock

[Martin Pool]

At http://sourcefrog.net/bzr/dlock

------------------------------------------------------------
revno: 2563
revision-id: mbp at sourcefrog.net-20070628060052-2st5avps6i86neat
parent: mbp at sourcefrog.net-20070627093945-36tc2vu397tk1k6a
committer: Martin Pool <mbp at sourcefrog.net>
branch nick: dlock
timestamp: Thu 2007-06-28 16:00:52 +1000
message:
  Add new BrokenRenameTransportDecorator
added:
  bzrlib/transport/brokenrename.py brokenrename.py-20070628050843-mbwebk50srn93rut-1
modified:
  bzrlib/transport/__init__.py   transport.py-20050711165921-4978aa7ce1285ad5
=== added file 'bzrlib/transport/brokenrename.py'
--- a/bzrlib/transport/brokenrename.py	1970-01-01 00:00:00 +0000
+++ b/bzrlib/transport/brokenrename.py	2007-06-28 06:00:52 +0000
@@ -0,0 +1,55 @@
+# Copyright (C) 2007 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
+
+"""Transport implementation that doesn't detect clashing renames.
+"""
+
+from stat import S_ISDIR
+
+import bzrlib.errors as errors
+from bzrlib.transport.decorator import TransportDecorator, DecoratorServer
+
+
+class BrokenRenameTransportDecorator(TransportDecorator):
+    """A transport that fails to detect clashing renames"""
+
+    @classmethod
+    def _get_url_prefix(self):
+        """FakeNFS transports are identified by 'brokenrename+'"""
+        return 'brokenrename+'
+
+    def rename(self, rel_from, rel_to):
+        """See Transport.rename().
+        """
+        try:
+            self._decorated.rename(rel_from, rel_to)
+        except (errors.DirectoryNotEmpty, errors.FileExists), e:
+            # absorb the error
+            return
+
+
+class BrokenRenameServer(DecoratorServer):
+    """Server for the BrokenRenameTransportDecorator for testing with."""
+
+    def get_decorator_class(self):
+        return BrokenRenameTransportDecorator
+
+
+def get_test_permutations():
+    """Return the permutations to be used in testing."""
+    # we don't use this for general testing, only for the tests that
+    # specifically want it
+    return []

=== modified file 'bzrlib/transport/__init__.py'
--- a/bzrlib/transport/__init__.py	2007-05-08 20:00:50 +0000
+++ b/bzrlib/transport/__init__.py	2007-06-28 06:00:52 +0000
@@ -1304,8 +1304,14 @@
 #              help="This modifier converts any transport to be readonly."
             )
 register_lazy_transport('readonly+', 'bzrlib.transport.readonly', 'ReadonlyTransportDecorator')
+
 register_transport_proto('fakenfs+')
 register_lazy_transport('fakenfs+', 'bzrlib.transport.fakenfs', 'FakeNFSTransportDecorator')
+
+register_transport_proto('brokenrename+')
+register_lazy_transport('brokenrename+', 'bzrlib.transport.brokenrename',
+        'BrokenRenameTransportDecorator')
+
 register_transport_proto('vfat+')
 register_lazy_transport('vfat+',
                         'bzrlib.transport.fakevfat',