tests/runners/airflow/liminal/write_outputs/write_outputs.py

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import json
import logging
import os

split_id = int(os.environ['LIMINAL_SPLIT_ID'])
num_splits = int(os.environ['LIMINAL_NUM_SPLITS'])

inputs_dir = f'/mnt/vol1/inputs/{split_id}'
outputs_dir = '/mnt/vol1/outputs/'

if not os.path.exists(outputs_dir):
    os.makedirs(outputs_dir)

logging.info(f'Running write_outputs for split id {split_id} [NUM_SPLITS = {num_splits}]')

for filename in os.listdir(inputs_dir):
    with open(os.path.join(inputs_dir, filename)) as infile, \
            open(os.path.join(
                outputs_dir,
                filename.replace('input', 'output').replace('.json', '.txt')
            ), 'w') as outfile:
        logging.info(f'Writing output file: {outfile.name}')
        data = json.loads(infile.read())
        outfile.write(data['mykey'])