How to perform operations on VSCode macros? - visual-studio-code

Question

My launch.json specifies a list of arguments for a given debug session (For airflow debugging in this case):
{
"version": "0.2.0",
"configurations": [
{
"name": "airflow_debug",
"type": "python",
"request": "launch",
"program": "${workspaceFolder}/.venv/bin/airflow",
"preLaunchTask": "activate-python-venv",
"console": "integratedTerminal",
"env": {
"AIRFLOW_HOME": "${workspaceFolder}",
"AIRFLOW__CORE__LOAD_EXAMPLES": "False",
"AIRFLOW__CORE__DAGS_FOLDER": "${workspaceFolder}/dags",
"AIRFLOW__CORE__EXECUTOR": "SequentialExecutor",
"PYTHONPATH": "${workspaceFolder}/plugins:${workspaceFolder}/dags:${env:PYTHONPATH}"
},
"args": [
"dags",
"test",
"migrate_dtm",
"2022-11-24"
]
}
]
}
In order to be able to debug my dags, I must specify the dag name in the args, here it is migrate_dtm. A more sophisticated way, would be to deduce the name of the dag from the name of the file My file's name is migrate_dtm_dag.py.
The goal here is not to change the launch.json and manually specify the dag name within every different debug launch; but only set a nomenclature rule for the devs to follow.
Something like this would help
"args":[
...
"${file.split('/')[-1].split('_dag')'}", // First split to get only the file name without the path, second split to extract the dag name.
...
]
Is there a way to achieve something like this in a VSCode macro? Or to perform operations on macros at all?

Answer 1

you can use the extension Command Variable
{
"version": "0.2.0",
"configurations": [
{
"name": "airflow_debug",
"type": "python",
"request": "launch",
"program": "${workspaceFolder}/.venv/bin/airflow",
"preLaunchTask": "activate-python-venv",
"console": "integratedTerminal",
"env": {
"AIRFLOW_HOME": "${workspaceFolder}",
"AIRFLOW__CORE__LOAD_EXAMPLES": "False",
"AIRFLOW__CORE__DAGS_FOLDER": "${workspaceFolder}/dags",
"AIRFLOW__CORE__EXECUTOR": "SequentialExecutor",
"PYTHONPATH": "${workspaceFolder}/plugins:${workspaceFolder}/dags:${env:PYTHONPATH}"
},
"args": [
"dags",
"test",
"${input:getdag}",
"2022-11-24"
]
}
],
"inputs": [
{
"id": "getdag",
"type": "command",
"command": "extension.commandvariable.transform",
"args": {
"text": "${fileBasenameNoExtension}",
"find": "_dag"
}
}
]
}
The default replace is "", so it removed the text _dag.
With the command extension.commandvariable.dateTime you can create a date string for today.