def targettype(x):
try:
_target = int(x)
def infinite_iterator():
return (_target for _ in iter(int, 1))
return infinite_iterator
except ValueError:
return util.load_obj_from_path(x, prefix='relay.plugins')
def warmer(
parser,
type=lambda x: util.load_obj_from_path(x, prefix='relay.plugins'),
help=(
' This should point to a function that starts n additional tasks.'
' In a PID controller, this is the manipulated variable (MV).'
' Valid examples:\n'
' "bash_echo_warmer",\n'
' "relay.plugins.bash_echo_warmer",\n'
' "mycode.my_warmer_func"\n')):
add_argument('-w', '--warmer', type=type, help=help)(parser)
def cooler(
parser,
type=lambda x: util.load_obj_from_path(x, prefix='relay.plugins'),
help=(
' This should point to a function or class that terminates n'
" instances of your tasks."
' In a PID controller, this is the manipulated variable (MV).'
" You may not want to implement"
" both a warmer and a cooler. Does your thermostat toggle"
" the heating element and air conditioner at the same time?"
" For valid examples, see the --warmer syntax")):
add_argument('-c', '--cooler', type=type, help=help)(parser)
def stop_condition(parser):
add_argument(
'--stop_condition',
type=lambda x: util.load_obj_from_path(x, prefix='relay.plugins'),
help=(
'Optional. This should point to a function that examines the'
' error history and determines whether Relay should exit. The'
' return code returned by this function gets passed to'
' sys.exit(...)'
' Valid examples:\n'
' "stop_if_mostly_diverging",\n'
' "mycode.my_stop_condition"\n')
)(parser)
def metric(
parser,
type=lambda x: util.load_obj_from_path(x, prefix='relay.plugins'),
help=(
' This should point to generator (function or class) that,'
' when called, returns a metric value. In a PID controller, this'
' corresponds to the process variable (PV). Warming the system'
' should eventually increase metric values and cooling should'
' decrease them. '
' Valid examples:\n'
' "bash_echo_metric"'
' (this loads relay.plugins.bash_echo_metric),\n'
' "relay.plugins.bash_echo_metric",\n'
' "mycode.custom_metric"\n')):
add_argument('-m', '--metric', type=type, help=help)(parser)