Add ParallelFileTask for parallel file processing#11
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- Import `concurrent.futures` in `task.py`
- Introduce new class `ParallelFileTask` extending `RomiTask`
- New luigi parameters: `query`, `n_workers`, `parallel`
- Abstract method `f` to be implemented by subclasses
- `run` method:
- Retrieves input files with `query`
- Copies metadata from input to output files
- Supports sequential processing when `parallel` is disabled
- Enables parallel execution using `ThreadPoolExecutor` and `tqdm` when enabled
- Handles `n_workers` = -1 to use default thread pool size
- Uses helper `_process_file` to encapsulate per‑file logic and metadata handling
ArthurLuciani2
approved these changes
May 7, 2026
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Summary
Introduces
ParallelFileTask, a newRomiTasksubclass that enables parallel processing of files using a thread pool and progress tracking.Key Changes
concurrent.futuresintask.py.ParallelFileTaskwith new Luigi parameters:query: pattern to locate input files.n_workers: number of worker threads (-1uses the default pool size).parallel: flag to enable/disable parallel execution.ffor subclasses to implement the per‑file operation.runmethod that:query.parallel=False.ThreadPoolExecutorandtqdmwhenparallel=True._process_fileto encapsulate per‑file logic and metadata handling.