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Lutz Justen a8b948b323 [cdc_rsync] Add initial support for Windows (#51)
Adds a ServerArch class whose job it is to encapsulate differences
between Windows and Linux cdc_rsync_servers. It detects the type
based on a heuristic in the destination path. This is not fool proof
and will probably require further work, like falling back to the other
type if the detected one doesn't work.

Uses the ServerArch class to determine the different commands to start
the server and to deploy the server.

Note that the functionality is not well tested on Windows yet, but
copying plain files works.
2023-01-17 13:34:14 +01:00

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# Copyright 2022 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Lint as: python3
"""cdc_rsync deployment test."""
from integration_tests.framework import utils
from integration_tests.cdc_rsync import test_base
REMOTE_FOLDER = '~/.cache/cdc-file-transfer/bin/'
class DeploymentTest(test_base.CdcRsyncTest):
"""cdc_rsync deployment test class."""
def _assert_deployment(self, initial_ts, file, msg):
"""Checks rsync and library are uploaded and the given file's timestamp matches initial_ts."""
res = utils.run_rsync(self.local_data_path, self.remote_base_dir)
self._assert_rsync_success(res)
self.assertIn(msg, str(res.stdout))
changed_ts = utils.get_ssh_command_output('stat --format=%%y %s' %
REMOTE_FOLDER + file)
self.assertEqual(initial_ts, changed_ts)
def _change_file_preserve_timestamp(self, file):
"""Changes a file preserving it timestamp."""
utils.get_ssh_command_output(
'touch -r %s %s' %
(REMOTE_FOLDER + file, REMOTE_FOLDER + file + '.tmp'))
utils.get_ssh_command_output('truncate -s +100 %s' % REMOTE_FOLDER + file)
utils.get_ssh_command_output(
'touch -r %s %s' %
(REMOTE_FOLDER + file + '.tmp', REMOTE_FOLDER + file))
utils.get_ssh_command_output('rm %s' % (REMOTE_FOLDER + file + '.tmp'))
def test_no_server(self):
"""Checks that cdc_rsync_server is uploaded if not present remotely.
1) Wipes |REMOTE_FOLDER|.
2) Uploads a file.
3) Verifies that cdc_rsync_server exists in that folder.
"""
utils.get_ssh_command_output('rm -rf %s*' % REMOTE_FOLDER)
utils.create_test_file(self.local_data_path, 1024)
res = utils.run_rsync(self.local_data_path, self.remote_base_dir)
self._assert_rsync_success(res)
self.assertIn('Server not deployed. Deploying...', str(res.stdout))
self._assert_remote_dir_contains(['cdc_rsync_server'],
remote_dir=REMOTE_FOLDER,
pattern='"*"')
def test_modified_server(self):
"""Checks that cdc_rsync_server is re-uploaded.
1) Touches cdc_rsync_server in REMOTE_FOLDER.
2) Uploads a file.
3) Verifies that cdc_rsync_server is re-uploaded.
4) Appends a few bytes to cdc_rsync_server while keeping its timestamp.
6) Uploads a file.
7) Verifies that cdc_rsync_server is re-uploaded.
"""
# To be sure that cdc_rsync_server exist on the remote system
# do an "empty" copy.
utils.run_rsync(self.local_base_dir, self.remote_base_dir)
remote_server_path = REMOTE_FOLDER + 'cdc_rsync_server'
initial_ts = utils.get_ssh_command_output('stat --format=%%y %s' %
remote_server_path)
utils.get_ssh_command_output('touch -d \'1 November 2020 00:00\' %s' %
remote_server_path)
changed_ts = utils.get_ssh_command_output('stat --format=%%y %s' %
remote_server_path)
self.assertNotEqual(initial_ts, changed_ts)
utils.create_test_file(self.local_data_path, 1024)
self._assert_deployment(initial_ts, 'cdc_rsync_server',
'Server outdated. Redeploying...')
self._change_file_preserve_timestamp('cdc_rsync_server')
self._assert_deployment(initial_ts, 'cdc_rsync_server',
'Server outdated. Redeploying...')
def test_read_only_server(self):
"""Checks that cdc_rsync_server is overwritten if it is read-only."""
utils.create_test_file(self.local_data_path, 1024)
res = utils.run_rsync(self.local_data_path, self.remote_base_dir)
self._assert_rsync_success(res)
# Modify cdc_rsync_server and wipe permissions.
remote_server_path = REMOTE_FOLDER + 'cdc_rsync_server'
utils.get_ssh_command_output('echo "xxx" > %s && chmod 0 %s' %
(remote_server_path, remote_server_path))
res = utils.run_rsync(self.local_data_path, self.remote_base_dir)
self._assert_rsync_success(res)
self.assertIn('Server failed to start. Redeploying...', str(res.stdout))
if __name__ == '__main__':
test_base.test_base.main()