#!/usr/bin/env python
# Copyright 2018 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 json
import subprocess
import sys

host_packages = json.load(sys.stdin)
rpm_output = subprocess.check_output(
    ['rpm', '-qa', '--qf', '%{NAME} %{VERSION}-%{RELEASE}\n']).split('\n')

image_packages = dict(i.split(' ') for i in rpm_output if i)

for pkg, version in image_packages.items():
    host_version = host_packages.get(pkg)
    if host_version and version != host_version:
        print('%s-%s does not match host version %s' % (
            pkg, version, host_version))
        sys.exit(1)

print('No package version differences found')