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Add more cases for std stream logging #3347

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Apr 11, 2024
Merged

Add more cases for std stream logging #3347

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18 changes: 14 additions & 4 deletions parsl/dataflow/dflow.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1391,10 +1391,20 @@ def load_checkpoints(self, checkpointDirs: Optional[Sequence[str]]) -> Dict[str,

@staticmethod
def _log_std_streams(task_record: TaskRecord) -> None:
if task_record['app_fu'].stdout is not None:
logger.info("Standard output for task {} available at {}".format(task_record['id'], task_record['app_fu'].stdout))
if task_record['app_fu'].stderr is not None:
logger.info("Standard error for task {} available at {}".format(task_record['id'], task_record['app_fu'].stderr))
tid = task_record['id']

def log_std_stream(name: str, target) -> None:
if target is None:
logger.info(f"{name} for task {tid} will not be redirected.")
elif isinstance(target, str):
logger.info(f"{name} for task {tid} will be redirected to {target}")
elif isinstance(target, tuple) and len(target) == 2:
logger.info(f"{name} for task {tid} will be redirected to {target[0]} with mode {target[1]}")
else:
logger.error(f"{name} for task {tid} has unknown specification: {target!r}")
Comment on lines +1403 to +1404
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If this is an error, should it also raise an exception? Otherwise, it feels more like a warning, no?

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It's an error. It should be validated elsewhere and this code path should be unreachable (and so do something more like raise an assertion that this path is "impossible".

"should" in the sense of thats how things could be but aren't. If you get this message, there's a problem and your workflow won't run as you expect. But this log statement is not the place to be validating that user input: prior to this, this code would log at info level whatever garbage you had fed in, and it will continue to log that garbage here in this case.


log_std_stream("Standard out", task_record['app_fu'].stdout)
log_std_stream("Standard error", task_record['app_fu'].stderr)


class DataFlowKernelLoader:
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