feature: Add async support to Typer

[dgarros]

Component

Python SDK

Describe the Feature Request

Currently we are using Typer for our various cli commands (infrahubctl, infrahub). Because Typer doesn't support Async natively we often have to create 2 versions of each command (see example below),

• one Sync for Typer with the definition of Options/Arguments,
• one Async that will execute the real logic and we are calling the second one from the first one with aiorun

@app.command()
def merge(
    branch_name: str,
    config_file: Path = typer.Option(DEFAULT_CONFIG_FILE, envvar=ENVVAR_CONFIG_FILE),
) -> None:
    """Merge a Branch with main."""
    config.load_and_exit(config_file=config_file)
    aiorun(_merge(branch_name=branch_name))

There is a long discussion on the Typer project about that and it looks like Typer is planning to support Async natively at some point. Meanwhile, there are a number of workaround discussed in this Thread that would be easy to implement
fastapi/typer#88 (comment)

Like this one

class AsyncTyper(Typer):
    @staticmethod
    def maybe_run_async(decorator, f):
        if inspect.iscoroutinefunction(f):

            @wraps(f)
            def runner(*args, **kwargs):
                return asyncio.run(f(*args, **kwargs))

            decorator(runner)
        else:
            decorator(f)
        return f

    def callback(self, *args, **kwargs):
        decorator = super().callback(*args, **kwargs)
        return partial(self.maybe_run_async, decorator)

    def command(self, *args, **kwargs):
        decorator = super().command(*args, **kwargs)
        return partial(self.maybe_run_async, decorator)

app = AsyncTyper()

Describe the Use Case

Simplify how to write our cli commands and reduce the maintenance effort

Additional Information

No response

[dgarros]

completed in #2453