ashb commented on code in PR #55070:
URL: https://github.com/apache/airflow/pull/55070#discussion_r2358004652
##########
providers/amazon/src/airflow/providers/amazon/aws/sensors/s3.py:
##########
@@ -122,8 +122,20 @@ def _check_key(self, key, context: Context):
"""
if self.wildcard_match:
prefix = re.split(r"[\[*?]", key, 1)[0]
- keys = self.hook.get_file_metadata(prefix, bucket_name)
- key_matches = [k for k in keys if fnmatch.fnmatch(k["Key"], key)]
+
+ key_matches: list[str] = []
+
+ # Is check_fn is None, then we can return True without having to
iterate through each value in
+ # yielded by iter_file_metadata. Otherwise, we'll check for a
match, and add all matches to the
+ # key_matches list
+ for k in self.hook.iter_file_metadata(prefix, bucket_name):
+ if fnmatch.fnmatch(k["Key"], key):
+ if self.check_fn is not None:
+ key_matches.append(k)
+ # This will only wait for a single match, and will
immediately return
+ else:
+ return True
Review Comment:
Style "nit" for clarity -- generally try to keep code as un-indented as
possible
```suggestion
if self.check_fn is None:
# This will only wait for a single match, and will
immediately return
return True
key_matches.append(k)
```
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