# -*- mode: python -*-

from datetime import timedelta
from time import sleep
from flowmetal import workflow, CancelledError, TimeoutError, Task


def cancellable_activity():
    try:
        while True:
            print("Still alive")
            sleep(0.5)
    except CancelledError:
        print("Task killed")


@workflow
def main():
    # Somewhat like a thread
    t = Task(target=cancellable_activity, args=(), timeout=timedelta(minutes=5))
    t.start()
    try:
        result = t.result(timeout=timedelta(seconds=3))
        print(result)
    except TimeoutError:
        t.cancel()