def get_snap_api():
trace('get_snap_api()',level=-1)
global SNAP_ALLOWED
if SNAP_ALLOWED is True:
try:
from PyTangoArchiving import snap
#from PyTangoArchiving.widget.snaps import *
db = fandango.get_database()
assert list(db.get_device_exported_for_class('SnapManager'))
SNAP_ALLOWED = snap.SnapAPI()
except Exception,e:
trace('PyTangoArchiving.Snaps not available: HISTORY VIEWER DISABLED: '+traceback.format_exc(),'WARNING',-1)
SNAP_ALLOWED = None
def prepare_api():
"""Prepare api opbjects"""
global alarms
global snap_api
global api_loc
with api_loc:
if alarms is None:
alarms = alarmapi.api()
# check if SNAP is available
if snap_api is None:
try:
db = alarmapi._TANGO # fandango.get_database()
assert list(db.get_device_exported_for_class('SnapManager'))
snap_api = snap.SnapAPI()
except Exception, e:
logging.warning(
'PyTangoArchiving.Snaps not available: '
'History synchronization is disabld: \n %s \n' % e.message)
snap_api = None