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# Copyright (C) 2006 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
"""VFS operations for the smart server.
This module defines the smart server methods that are low-level file operations
-- i.e. methods that operate directly on files and directories, rather than
higher-level concepts like branches and revisions.
These methods, plus 'hello' and 'get_bundle', are version 1 of the smart server
protocol, as implemented in bzr 0.11 and later.
"""
from bzrlib.smart import request
# vfs_commands is the set of commands handlers for the version 1 protocol.
vfs_commands = request.version_one_commands.copy()
def register_command(command):
vfs_commands[command.method] = command
def _deserialise_optional_mode(mode):
# XXX: FIXME this should be on the protocol object. Later protocol versions
# might serialise modes differently.
if mode == '':
return None
else:
return int(mode)
class HasRequest(request.SmartServerRequest):
method = 'has'
def do(self, relpath):
r = self._backing_transport.has(relpath) and 'yes' or 'no'
return request.SmartServerResponse((r,))
register_command(HasRequest)
class GetRequest(request.SmartServerRequest):
method = 'get'
def do(self, relpath):
backing_bytes = self._backing_transport.get_bytes(relpath)
return request.SmartServerResponse(('ok',), backing_bytes)
register_command(GetRequest)
class AppendRequest(request.SmartServerRequest):
method = 'append'
def do(self, relpath, mode):
self._relpath = relpath
self._mode = _deserialise_optional_mode(mode)
def do_body(self, body_bytes):
old_length = self._backing_transport.append_bytes(
self._relpath, body_bytes, self._mode)
return request.SmartServerResponse(('appended', '%d' % old_length))
register_command(AppendRequest)
class DeleteRequest(request.SmartServerRequest):
method = 'delete'
def do(self, relpath):
self._backing_transport.delete(relpath)
return request.SmartServerResponse(('ok', ))
register_command(DeleteRequest)
class IterFilesRecursive(request.SmartServerRequest):
method = 'iter_files_recursive'
def do(self, relpath):
transport = self._backing_transport.clone(relpath)
filenames = transport.iter_files_recursive()
return request.SmartServerResponse(('names',) + tuple(filenames))
register_command(IterFilesRecursive)
class ListDirRequest(request.SmartServerRequest):
method = 'list_dir'
def do(self, relpath):
filenames = self._backing_transport.list_dir(relpath)
return request.SmartServerResponse(('names',) + tuple(filenames))
register_command(ListDirRequest)
class MkdirCommand(request.SmartServerRequest):
method = 'mkdir'
def do(self, relpath, mode):
self._backing_transport.mkdir(relpath,
_deserialise_optional_mode(mode))
return request.SmartServerResponse(('ok',))
register_command(MkdirCommand)
class MoveCommand(request.SmartServerRequest):
method = 'move'
def do(self, rel_from, rel_to):
self._backing_transport.move(rel_from, rel_to)
return request.SmartServerResponse(('ok',))
register_command(MoveCommand)
class PutCommand(request.SmartServerRequest):
method = 'put'
def do(self, relpath, mode):
self._relpath = relpath
self._mode = _deserialise_optional_mode(mode)
def do_body(self, body_bytes):
self._backing_transport.put_bytes(self._relpath, body_bytes, self._mode)
return request.SmartServerResponse(('ok',))
register_command(PutCommand)
class PutNonAtomicCommand(request.SmartServerRequest):
method = 'put_non_atomic'
def do(self, relpath, mode, create_parent, dir_mode):
self._relpath = relpath
self._dir_mode = _deserialise_optional_mode(dir_mode)
self._mode = _deserialise_optional_mode(mode)
# a boolean would be nicer XXX
self._create_parent = (create_parent == 'T')
def do_body(self, body_bytes):
self._backing_transport.put_bytes_non_atomic(self._relpath,
body_bytes,
mode=self._mode,
create_parent_dir=self._create_parent,
dir_mode=self._dir_mode)
return request.SmartServerResponse(('ok',))
register_command(PutNonAtomicCommand)
class ReadvCommand(request.SmartServerRequest):
method = 'readv'
def do(self, relpath):
self._relpath = relpath
def do_body(self, body_bytes):
"""accept offsets for a readv request."""
offsets = self._deserialise_offsets(body_bytes)
backing_bytes = ''.join(bytes for offset, bytes in
self._backing_transport.readv(self._relpath, offsets))
return request.SmartServerResponse(('readv',), backing_bytes)
def _deserialise_offsets(self, text):
# XXX: FIXME this should be on the protocol object.
offsets = []
for line in text.split('\n'):
if not line:
continue
start, length = line.split(',')
offsets.append((int(start), int(length)))
return offsets
register_command(ReadvCommand)
class RenameCommand(request.SmartServerRequest):
method = 'rename'
def do(self, rel_from, rel_to):
self._backing_transport.rename(rel_from, rel_to)
return request.SmartServerResponse(('ok', ))
register_command(RenameCommand)
class RmdirCommand(request.SmartServerRequest):
method = 'rmdir'
def do(self, relpath):
self._backing_transport.rmdir(relpath)
return request.SmartServerResponse(('ok', ))
register_command(RmdirCommand)
class StatCommand(request.SmartServerRequest):
method = 'stat'
def do(self, relpath):
stat = self._backing_transport.stat(relpath)
return request.SmartServerResponse(
('stat', str(stat.st_size), oct(stat.st_mode)))
register_command(StatCommand)
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