def _to_fqdn(name, logger=None):
"""Helper to convert name into a FQDN URI reference. Works for devices
and attributes.
Prior to sardana 2.4.0 Pool element references were using not unique full
names e.g. pc255:10000/motor/motctrl20/1. This helper converts them into
FQDN URI references e.g. tango://pc255.cells.es:10000/motor/motctrl20/1.
It is similarly solved for attribute names.
"""
full_name = name
# try to use Taurus 4 to retrieve FQDN URI name
try:
from taurus.core.tango.tangovalidator import TangoDeviceNameValidator
try:
full_name, _, _ = TangoDeviceNameValidator().getNames(name)
# it is not a device try as an attribute
except Exception:
from taurus.core.tango.tangovalidator import \
TangoAttributeNameValidator
full_name, _, _ = TangoAttributeNameValidator().getNames(name)
# if Taurus3 in use just continue
except ImportError:
pass
if full_name != name and logger:
msg = ("PQDN full name is deprecated in favor of FQDN full name. "
"Re-apply pre-scan snapshot configuration in order to "
"upgrade.")
logger.warning(msg)
return full_name
def _build_elements(self):
self._user_elements = []
self._physical_elements = {}
self._physical_elements_set = set()
pool = self._get_pool()
for user_element_id in self._user_element_ids:
# an internal element
internal = isinstance(user_element_id, int)
if internal:
try:
user_element = pool.get_element(id=user_element_id)
except KeyError:
self._pending = True
self._user_elements = None
self._physical_elements = None
self._physical_elements_set = None
raise
internal = self._is_managed_element(user_element)
if not internal:
user_element_id = user_element.get_source()
# a tango channel or non internal element (ex: ioregister or motor
# in measurement group)
if not internal:
validator = TangoAttributeNameValidator()
params = validator.getUriGroups(user_element_id)
params['pool'] = self._get_pool()
user_element = PoolExternalObject(**params)
self.add_user_element(user_element)
self._pending = False
def on_message(self, json_data):
"""Executed when a message comes from the client through the websocket.
It expected that json_data is a JSON encoded string.
It should be a JSON object with *models* member. the value of *models*
should be an array of strings, each representing a model name.
Example:
{ models : [ "BO/S05/Pump5/Pressure",
"BO/S05/Pump5/Pressure#unit",
"sys/tg_test/1/double_scalar" ]
}
So far, only attributes and configuration parameters are supported.
A TaurusWebXXX object will be created for each different model.
This object subscribes itself to taurus events. The callback usually
transforms such an event into a JSON encoded string which is sent
back to the client through this same web socket.
"""
data = json_decode(json_data)
if 'models' in data:
self.clear_models()
model_names = set(data['models'])
for model_name in model_names:
model_name = str(model_name)
if TangoAttributeNameValidator().isValid(model_name):
web_model = TaurusWebAttribute(self, model_name)
elif TangoConfigurationNameValidator().isValid(model_name):
web_model = TaurusWebConfiguration(self, model_name)
else:
continue
self.models.add(web_model)
def on_message(self, json_data):
data = json_decode(json_data)
if 'models' in data:
self.clear_models()
model_names = set(data['models'])
for model_name in model_names:
model_name = str(model_name)
if TangoAttributeNameValidator().isValid(model_name):
web_model = TaurusWebAttribute(self, model_name)
elif TangoConfigurationNameValidator().isValid(model_name):
web_model = TaurusWebConfiguration(self, model_name)
else:
continue
self.models.add(web_model)
def __init__(self, event_callback, unsubscribe_callback, period=0.5):
QtCore.QThread.__init__(self)
self.listeners = CaselessDict()
self.inverse_listeners = {}
self.event_callback = event_callback
self.unsubscribe_callback = unsubscribe_callback
self.period = period
self._attributes = None
self._config = CaselessDict()
self._last_event = TTLDict(default_ttl=10)
self.attribute_validator = TangoAttributeNameValidator()
self.device_validator = TangoDeviceNameValidator()
self.eval_validator = EvaluationAttributeNameValidator()
self.lock = Lock()
self.stopped = Event()
def create_measurement_group(self, **kwargs):
name = kwargs['name']
elem_ids = kwargs["user_elements"]
kwargs['pool'] = self
kwargs["pool_name"] = self.name
td = TYPE_MAP_OBJ[ElementType.MeasurementGroup]
klass = td.klass
auto_full_name = td.auto_full_name
full_name = kwargs.get("full_name", auto_full_name.format(**kwargs))
kwargs.pop('pool_name')
self.check_element(name, full_name)
for elem_id in elem_ids:
if isinstance(elem_id, int):
self.pool.get_element(id=elem_id)
else:
tg_attr_validator = TangoAttributeNameValidator()
params = tg_attr_validator.getUriGroups(elem_id)
if params is None:
raise Exception("Invalid channel name %s" % elem_id)
eid = kwargs.get('id')
if eid is None:
kwargs['id'] = eid = self.get_new_id()
else:
self.reserve_id(eid)
elem = klass(**kwargs)
ret = self.add_element(elem)
self.fire_event(EventType("ElementCreated"), elem)
return ret
NEXUS_SRC = re.compile(
r'^((nxfile|nxdata):)(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*)(\[[0-9,: ]*?\]))?'
)
ASCII_SRC = re.compile(
r'^((file):)(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*)(\[[0-9,: ]*?\]))?')
# set some named constants
# columns:
NUMCOLS = 4
X, Y, TITLE, VIS = range(NUMCOLS)
SRC_ROLE = Qt.Qt.UserRole + 1
PROPS_ROLE = Qt.Qt.UserRole + 2
# TODO: Tango-centric (use agnostic validation)
from taurus.core.tango.tangovalidator import TangoAttributeNameValidator
ATTRNAMEVALIDATOR = TangoAttributeNameValidator()
class Component(object):
def __init__(self, src):
self.src = src
self.display = ''
self.icon = Qt.QIcon()
self.ok = True
self._attrnamevalidator = ATTRNAMEVALIDATOR
self._dbCache = taurus.Authority()
self.setSrc(src)
def update(self):
self.setSrc(self.src)
