def start_device(self, device_id, timeout=300):
""" start necessary drivers and agents for instrument, put into streaming mode """
start_time = time.time()
give_up_time = start_time + timeout
pause_time = 5 # too big = wait longer than needed ; too small = check too frequently
try:
log.debug('starting agent for device %s', device_id)
ServiceApi.instrument_agent_start(device_id) # launches instrument agent (not yet driver)
except Exception,e:
log.warn('failed to start device %s: %s',device_id,e, exc_info=True)
self.report(OperationResult(result='failed to start device '+device_id, exception=e))
return
def list_instruments(self):
""" perform lookup used by ion-ux to generate list of devices """
out = ServiceApi.find_by_resource_type('InstrumentDevice')
log.trace('out: %r', out)
while isinstance(out[0], list):
log.warn('have list of lists -- should have list of devices!')
out = out[0]
log.trace('out: %r', out)
return out
def lookup_instrument(self, device_id):
""" perform service gateway lookups ordinarily performed by ion-ux to load a device """
instrument = ServiceApi.find_instrument(device_id)
