def greatest_lesser_change_for_branch(ctx, branch, change_num):
"""Find the change for the branch that is no higher than change_num.
:param ctx: Git Fusion context
:param branch: branch for which to find highest change
:param change_num: the high water mark of changes to find
:return: ObjectType or None
"""
results = None
pattern = p4gf_const.P4GF_P4KEY_INDEX_OT.format(
repo_name=ctx.config.repo_name, change_num='*', branch_id=branch.branch_id)
LOG.debug("greatest_lesser_change_for_branch() pattern %s", pattern)
d = p4gf_p4key.get_all(ctx.p4gf, pattern)
if d:
for key, value in d.items():
mk = p4gf_object_type_util.KEY_BRANCH_REGEX.search(key)
if not mk:
LOG.debug("ignoring unexpected p4key: %s", key)
continue
branch_id = mk.group('branch_id')
cl = int(mk.group('change_num'))
if cl <= int(change_num):
# Ensure we keep the highest change found so far for this branch.
if results and int(results.change_num) > cl:
continue
LOG.debug("greatest_lesser_change_for_branch() candidate %s, %s, %s",
branch_id, cl, value)
results = ObjectType.create_commit(sha1=value, repo_name=ctx.config.repo_name,
change_num=cl, branch_id=branch_id)
LOG.debug("greatest_lesser_change_for_branch() returning %s", results)
return results
def _create_ot_to_delete_git_ref(self, branch):
"""Return a fake ObjectType instance that tells us to delete this
branch's Git reference later.
Use _is_ot_to_delete_git_ref() to detect these fake instances.
"""
return ObjectType.create_commit(
sha1 = p4gf_const.NULL_COMMIT_SHA1
, repo_name = self.ctx.config.repo_name
, change_num = 0
, branch_id = branch.branch_id )