Volume mount testing in dag

airflow/dags/hello_world.py

@@ -1,11 +1,4 @@
-"""
-# DAG Name: Hello World
-
-# Purpose
-
-# Usage
-"""  # noqa: E501
-
+import os
 import time
 from datetime import datetime
 
@@ -24,13 +17,62 @@ def hello_world():
     time.sleep(30)
 
 
+def write_to_shared_data():
+    file_path = "/path/to/shared-task-data/test_file.txt"  # Adjust the path as necessary
+    with open(file_path, "w") as f:
+        f.write("This is a test file written at " + str(datetime.now()) + "\n")
+    print(f"Successfully written to {file_path}")
+
+
+def read_from_shared_data():
+    file_path = "/path/to/shared-task-data/test_file.txt"  # Adjust the path as necessary
+    try:
+        with open(file_path, "r") as f:
+            contents = f.read()
+        print(f"File contents:\n{contents}")
+    except FileNotFoundError:
+        print("File not found. Make sure the file path is correct.")
+
+
+def delete_shared_data_file():
+    file_path = "/path/to/shared-task-data/test_file.txt"  # Adjust the path as necessary
+    try:
+        os.remove(file_path)
+        print(f"Successfully deleted {file_path}")
+    except FileNotFoundError:
+        print("File not found. Make sure the file path is correct.")
+
+
 with DAG(
-    dag_id="hello_world",
-    doc_md=__doc__,
+    dag_id="full_workflow",
     default_args=default_args,
     schedule=None,
     is_paused_upon_creation=False,
     tags=["test"],
 ) as dag:
-    hello_world_task = PythonOperator(task_id="hello_world", python_callable=hello_world)
-    hello_world_task
+    hello_world_task = PythonOperator(
+        task_id="hello_world",
+        python_callable=hello_world,
+    )
+
+    write_to_shared_data_task = PythonOperator(
+        task_id="write_to_shared_data",
+        python_callable=write_to_shared_data,
+    )
+
+    read_from_shared_data_task = PythonOperator(
+        task_id="read_from_shared_data",
+        python_callable=read_from_shared_data,
+    )
+
+    delete_shared_data_file_task = PythonOperator(
+        task_id="delete_shared_data_file",
+        python_callable=delete_shared_data_file,
+    )
+
+    (
+        hello_world_task
+        >> write_to_shared_data_task
+        >> read_from_shared_data_task
+        >> delete_shared_data_file_task
+    )