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# Copyright (c) 2007 Chris AtLee <chris@atlee.ca>
# This file is part of GlusterFS.
#
# GlusterFS 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 3 of the License,
# or (at your option) any later version.
#
# GlusterFS 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, see
# <http://www.gnu.org/licenses/>.
"""
This is a test translator written in python.
Important things to note:
This file must be import-able from glusterfsd. This probably means
setting PYTHONPATH to where this file is located.
This file must have a top-level xlator class object that will be
used to instantiate individual translators.
"""
from gluster import *
class MyXlator(ComplexTranslator):
name = "MyXlator"
def writev_cbk(self, frame, cookie, op_ret, op_errno, buf):
stack_unwind(frame, op_ret, op_errno, buf)
return 0
def writev(self, frame, fd, vector, count, offset):
gf_log(self.name, GF_LOG_WARNING, "writev %i bytes", vector.iov_len)
# TODO: Use cookie to pass this to writev_cbk
old_count = vector.iov_len
data = vector.getBytes().encode("zlib")
vector = iovec(data)
gf_log(self.name, GF_LOG_WARNING, "writev %i bytes", vector.iov_len)
@ret_fn_t
def rfn(frame, prev, this, op_ret, op_errno, *params):
if len(params) == 0:
params = [0]
return self.writev_cbk(frame, prev, old_count, op_errno, *params)
stack_wind(frame, rfn, self.firstChild,
self.firstChild[0].fops[0].writev, fd, vector, count, offset)
return 0
xlator = MyXlator
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