def test_downthenup_bounce_no_existing_apps(self):
"""When marathon is unaware of a service, downthenup bounce should try to
create a marathon app."""
new_config = {'id': 'foo.bar.12345', 'instances': 5}
happy_tasks = []
old_app_live_tasks = {}
assert bounce_lib.downthenup_bounce(
new_config=new_config,
new_app_running=False,
happy_new_tasks=happy_tasks,
old_app_live_tasks=old_app_live_tasks,
) == {
"create_app": True,
"tasks_to_drain": set(),
}
def test_downthenup_bounce_done(self):
"""When marathon has the desired app, and there are no other copies of the service running, downthenup bounce
should neither start nor stop anything."""
new_config = {'id': 'foo.bar.12345', 'instances': 5}
happy_tasks = [mock.Mock() for _ in xrange(5)]
old_app_live_tasks = {}
assert bounce_lib.downthenup_bounce(
new_config=new_config,
new_app_running=True,
happy_new_tasks=happy_tasks,
old_app_live_tasks=old_app_live_tasks,
) == {
"create_app": False,
"tasks_to_drain": set(),
}
def test_downthenup_bounce_old_but_no_new(self):
"""When marathon has only old copies of the service, downthenup_bounce should kill them and not start a new one
yet."""
new_config = {'id': 'foo.bar.12345', 'instances': 5}
happy_tasks = []
old_app_live_tasks = {
'app1': set(mock.Mock() for _ in xrange(3)),
'app2': set(mock.Mock() for _ in xrange(2)),
}
assert bounce_lib.downthenup_bounce(
new_config=new_config,
new_app_running=False,
happy_new_tasks=happy_tasks,
old_app_live_tasks=old_app_live_tasks,
) == {
"create_app": False,
"tasks_to_drain": old_app_live_tasks['app1'] | old_app_live_tasks['app2'],
}