diskimage-builder/elements/svc-map/bin/svc-map
Ryan Brady e1853a7d5b Add svc-map element.
Adds a new svc-map element which can be used to install
services based on an in element 'svc-map' YAML config
file format.

This change is intended to decouple elements from DIB
and allow new elements to support multiple distributions
(with various service naming schemes) without having to
constantly maintain DIB's various bin/map-services files.

This patch ensures all of the YAML files are compiled into
a single file without namespaces.  The YAML compilation
process occurs during image creation time and errors if
conflicting mappings are found.

Change-Id: Id11433ea342aace71a358936a7ca3151ec11d506
2014-09-26 12:00:38 -04:00

47 lines
1.5 KiB
Python
Executable File

#!/usr/bin/env python
# Copyright 2012 Hewlett-Packard Development Company, L.P.
# Copyright 2014 Red Hat, Inc.
#
# 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.
import os
import sys
import yaml
def load_service_mapping(filepath="/usr/share/svc-map/services"):
if not os.path.isfile(filepath):
return {}
with open(filepath, 'r') as data_file:
return yaml.load(data_file.read())
def main():
for arg in sys.argv[1:]:
# We need to support the service name being different when installing
# from source vs. packages. So, if the requested service file already
# exists, just use that.
if os.path.exists('/lib/systemd/system/%s.service' % arg): # systemd
print(arg)
elif os.path.exists('/etc/init/%s.conf' % arg): # upstart
print(arg)
else:
service_map = load_service_mapping()
name = service_map.get(arg, arg)
print(name)
sys.exit(0)
if __name__ == '__main__':
main()