Added output_processor parameter to BashProcessor

[dabla]

Added result_processor parameter to BashProcessor which allows you to specify a lambda function that processes the output of the bash script before it is pushed as an XCom. This feature is particularly useful for manipulating the script’s result directly within the BashOperator, without the need for additional operators or tasks.

If for example you have following bash script which uses the linux jq command to filter the required elements from a JSON-file, it is handy to have the XCom directly loaded as a JSON object in python instead of a string:

filter_today_changes = BashOperator(
        task_id="filter_today_changes",
        bash_command="""
            jq -c '.[] | select(.lastModified > "{{ data_interval_start | ts_zulu }}" or .created > "{{ data_interval_start | ts_zulu }}")' \\
           example.json
        """,
        output_processor=lambda output: json.loads(output),
)

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[shahar1]

Seems like a useful feature, got some few comments :)

[shahar1]

Almost there