unitdata.py 文件源码

def _record_charm_version(self, charm_dir):
        # Record revisions.. charm revisions are meaningless
        # to charm authors as they don't control the revision.
        # so logic dependnent on revision is not particularly
        # useful, however it is useful for debugging analysis.
        charm_rev = open(
            os.path.join(charm_dir, 'revision')).read().strip()
        charm_rev = charm_rev or '0'
        revs = self.kv.get('charm_revisions', [])
        if charm_rev not in revs:
            revs.append(charm_rev.strip() or '0')
            self.kv.set('charm_revisions', revs)