multiple tasks in a group_task

[dbarrosop]

Brigade supports grouping tasks. For instance, you can do something like:

def print_facts(task, facts):
    r1 = networking.napalm_get_facts(task, "facts")
    print(r1)
    r2 = networking.napalm_get_facts(task, "interfaces")
    print(r2)
    return ???


brigade.run(task=get_facts,
                    facts=facts)

The idea is to group tasks that logically go together to build reusable workflows. The challenge is what to return in the case you may want to return something or pass it to a "callback" (see #3). What I propose is to have a MultiResult class that does something like:

class MultiResult(object):
    
    def __init__(self, *results):
        self.results = results
        self.changed = any([r.changed for r in result])

You'd basically rewrite the grouping above like this:

def print_facts(task, facts):
    r1 = networking.napalm_get_facts(task, "facts")
    r2 = networking.napalm_get_facts(task, "interfaces")
    return MultiResult(r1, r2)

[dbarrosop]

Implemented.