Parameter passing to a shell script using BashOperator in Airflow 2.0 - shell

Question

I am using airflow 2.0 and recently came up with a problem. So in my dag, I am calling a shell script by passing arguments like date and hour and in the script it should ideally fetch the value and perform some operation. But unfortunately, the values are not getting substituted.
Date='{{ (next_execution_date + macros.timedelta(hours=9,days=-3)).strftime("%Y%m%d") }}' //global
BashOperator=(task_id="",
dag=dag,
bash_command='''
echo "hi"
'''
+
'''
/path /file.sh Date Hr
'''
)
In the shell script file.sh:
echo "Date is $1"
echo "Hour is $2"
Checked the logs and it printed- Date is Date, Hour is Hr. Can anyone please help me with correct way to pass these arguments?

Answer 1

You might have an issue with a quote being off at one point, hard to tell from your question.
This works for me (Airflow 2.5.1):
DAG
from airflow import DAG
from pendulum import datetime
from airflow.operators.bash import BashOperator
with DAG(
dag_id="scripting_dag",
start_date=datetime(2022,12,10),
schedule="#daily",
catchup=False,
) as dag:
t1 = BashOperator(
task_id="t1",
bash_command="my_script.sh",
env={
"my_date": "{{ (next_execution_date + macros.timedelta(hours=9,days=-3)).strftime('%Y%m%d') }}",
"my_hour": "{{ (next_execution_date + macros.timedelta(hours=9,days=-3)).strftime('%H') }}"
}
)
script my_script.sh:
echo $my_date
echo $my_hour
Logs
[2023-02-03, 16:35:28 UTC] {subprocess.py:75} INFO - Running command: ['/bin/bash', '-c', 'echo $my_date\necho $my_hour']
[2023-02-03, 16:35:28 UTC] {subprocess.py:86} INFO - Output:
[2023-02-03, 16:35:28 UTC] {subprocess.py:93} INFO - 20230201
[2023-02-03, 16:35:28 UTC] {subprocess.py:93} INFO - 01