openstack
/
heat
Code Issues Proposed changes

Merge "Update openstack-common to get newly fixed version.py"

This commit is contained in:
Jenkins 2012-12-08 01:48:47 +00:00 committed by Gerrit Code Review
parent 4867bd9658 ca22f0e443
commit 42599700a7
1 changed files with 26 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
heat/openstack/common/version.py
View File

@ -24,17 +24,37 @@ import pkg_resources
import setup
class _deferred_version_string(object):
class _deferred_version_string(str):
"""Internal helper class which provides delayed version calculation."""
def __init__(self, version_info, prefix):
self.version_info = version_info
self.prefix = prefix
def __new__(cls, version_info, prefix):
new_obj = str.__new__(cls, "")
new_obj._version_info = version_info
new_obj._prefix = prefix
new_obj._cached_version = None
return new_obj
def _get_cached_version(self):
if not self._cached_version:
self._cached_version = \
"%s%s" % (self._prefix,
self._version_info.version_string())
return self._cached_version
def __len__(self):
return self._get_cached_version().__len__()
def __contains__(self, item):
return self._get_cached_version().__contains__(item)
def __getslice__(self, i, j):
return self._get_cached_version().__getslice__(i, j)
def __str__(self):
return "%s%s" % (self.prefix, self.version_info.version_string())
return self._get_cached_version()
def __repr__(self):
return "%s%s" % (self.prefix, self.version_info.version_string())
return self._get_cached_version()
class VersionInfo(object):