def get_base_commit_sha(self, pull_request: PullRequest) -> Optional[str]:
if self._settings.pull_request_build == pull_request_build_mode_merge:
if self._settings.event:
# for pull request events we take the other parent of the merge commit (base)
if self._settings.event_name == 'pull_request':
return self._settings.event.get('pull_request',
{}).get('base',
{}).get('sha')
# for workflow run events we should take the same as for pull request events,
# but we have no way to figure out the actual merge commit and its parents
# we do not take the base sha from pull_request as it is not immutable
if self._settings.event_name == 'workflow_run':
return None
try:
# we always fall back to where the branch merged off base ref
logger.debug(
f'comparing {pull_request.base.ref} with {self._settings.commit}'
)
compare = self._repo.compare(pull_request.base.ref,
self._settings.commit)
return compare.merge_base_commit.sha
except:
logger.warning(f'could not find best common ancestor '
f'between base {pull_request.base.sha} '
f'and commit {self._settings.commit}')
return None
def warning(self,
message: str,
file: Optional[str] = None,
line: Optional[int] = None,
column: Optional[int] = None) -> str:
logger.warning(message)
params = {}
if file is not None:
params.update(file=file)
if line is not None:
params.update(line=line)
if column is not None:
params.update(col=column)
return self._command(self._file, 'warning', message, params)