def _handler_observatory_go_inactive(self, *args, **kwargs):
"""
Handler for go_inactive agent command in observatory state.
Attempt to disconnect and initialize all active driver channels.
Switch to inactive state if successful.
"""
result = None
next_state = None
channels = self._dvr_client.cmd_dvr('get_active_channels')
dis_result = self._dvr_client.cmd_dvr('disconnect', channels)
[key for (key, val) in dis_result.iteritems() if not
InstErrorCode.is_error(val)]
init_result = self._dvr_client.cmd_dvr('initialize', channels)
result = dis_result.copy()
for (key, val) in init_result.iteritems():
result[key] = val
self._active_channels = self._dvr_client.cmd_dvr('get_active_channels')
if len(self._active_channels)==0:
next_state = InstrumentAgentState.INACTIVE
return (next_state, result)
def _handler_inactive_go_active(self, dvr_comms=None, *args, **kwargs):
"""
Handler for go_active agent command in inactive state.
Attempt to establsih communications with all device channels.
Switch to active state if any channels activated.
"""
result = None
next_state = None
if not dvr_comms:
dvr_comms = self._dvr_config.get('comms_config', None)
cfg_result = self._dvr_client.cmd_dvr('configure', dvr_comms)
channels = [key for (key, val) in cfg_result.iteritems() if not
InstErrorCode.is_error(val)]
con_result = self._dvr_client.cmd_dvr('connect', channels)
result = cfg_result.copy()
for (key, val) in con_result.iteritems():
result[key] = val
self._active_channels = self._dvr_client.cmd_dvr('get_active_channels')
if len(self._active_channels)>0:
next_state = InstrumentAgentState.IDLE
return (next_state, result)
