zaqar/marconi/version.py
Chang Bo Guo 683206d237 Follow hacking rules about import
This patch follows the rules about import in HACKING.rst
https://github.com/openstack/marconi/blob/master/HACKING.rst#imports

* reorder imports
* Add missing blank lines before code

Change-Id: I4abcfb3a2640499c5df34cbf75b5eaecb3d19823
2013-10-11 20:06:35 -07:00

54 lines
2.0 KiB
Python

# Copyright (c) 2013 OpenStack Foundation
#
# 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 pbr.packaging
import pbr.version
version_info = pbr.version.VersionInfo('marconi')
def verify_sha(expected):
"""Verifies the commit hash for an interim Marconi build.
This function may be used to verify that the version of the marconi
package, as imported from an environment's site-packages, is the
expected build. This allows continuous integration scripts to
detect out-of-date installations of the package.
Note that this function will ALWAYS return False for Marconi packages
that were not installed from git.
:param expected: The expected commit object name. May be either a full
or abbreviated SHA hash. If abbreviated, at least 7 digits are
required.
:returns: True if the package's version string contains a hash, and
that hash matches `expected`. Otherwise returns False.
"""
# NOTE(kgriffs): Require 7 digits to avoid false positives. In practice,
# Git's abbreviated commit oject names will always include at least
# 7 digits.
assert len(expected) >= 7
# NOTE(kgriffs): Git usually abbreviates hashed to 7 digits, but also
# check 8 digits in case git decides just 7 is ambiguous. Accordingly,
# try the longer one first since it is more specific than the other.
for abbreviated in (expected[:8], expected[:7]):
if ('.g' + abbreviated) in version_info.release_string():
return True
return False