diskimage-builder/elements/package-installs/bin/package-installs-squash

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#!/usr/bin/env python
# Copyright 2014 Hewlett-Packard Development Company, L.P.
#
# 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 argparse
import collections
import functools
import json
import os
import yaml
def collect_data(data, filename, element_name):
try:
objs = json.load(open(filename))
except ValueError:
objs = yaml.load(open(filename))
for pkg_name, params in objs.items():
if not params:
params = {}
phase = params.get('phase', 'install.d')
install = "install"
if 'uninstall' in params:
install = "uninstall"
data[phase][install].append((pkg_name, element_name))
return data
def main():
parser = argparse.ArgumentParser(
description="Produce a single packages-installs file from all of"
" the available package-installs files")
parser.add_argument('--elements', required=True,
help="Which elements to squash")
parser.add_argument('--path', required=True,
help="Elements path to search for elements")
parser.add_argument('outfile', help="Location of the output file")
args = parser.parse_args()
# Replicate the logic of finding the first element, because we can't
# operate on the post-copied hooks dir, since we lose element context
element_dirs = list()
for element_name in args.elements.split():
for elements_dir in args.path.split(':'):
potential_path = os.path.join(elements_dir, element_name)
if os.path.exists(potential_path):
element_dirs.append((elements_dir, element_name))
# Collect the merge of all of the existing install files in the elements
# that are the first on the ELEMENT_PATH
final_dict = collections.defaultdict(
functools.partial(collections.defaultdict, list))
for (elements_dir, element_name) in element_dirs:
for file_type in ('json', 'yaml'):
target_file = os.path.join(
elements_dir, element_name, "package-installs.%s" % file_type)
if not os.path.exists(target_file):
continue
final_dict = collect_data(final_dict, target_file, element_name)
# Write the resulting file
with open(args.outfile, 'w') as outfile:
json.dump(
final_dict, outfile,
indent=True, separators=(',', ': '), sort_keys=False)
if __name__ == '__main__':
main()