def test_null_string(self):
v = ua.Variant(None, ua.VariantType.String)
b = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(b))
self.assertEqual(v.Value, v2.Value)
v = ua.Variant("", ua.VariantType.String)
b = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(b))
self.assertEqual(v.Value, v2.Value)
def test_null_string(self):
v = ua.Variant(None, ua.VariantType.String)
b = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(b))
self.assertEqual(v.Value, v2.Value)
v = ua.Variant("", ua.VariantType.String)
b = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(b))
self.assertEqual(v.Value, v2.Value)
def test_variant_array_none(self):
v = ua.Variant(None, varianttype=ua.VariantType.Int32, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
self.assertEqual(v, v2)
self.assertTrue(v2.is_array)
v = ua.Variant(None, varianttype=ua.VariantType.Null, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
self.assertEqual(v, v2)
self.assertTrue(v2.is_array)
def test_variant_array_none(self):
v = ua.Variant(None, varianttype=ua.VariantType.Int32, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
self.assertEqual(v, v2)
self.assertTrue(v2.is_array)
v = ua.Variant(None, varianttype=ua.VariantType.Null, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
self.assertEqual(v, v2)
self.assertTrue(v2.is_array)
def test_variant_array(self):
v = ua.Variant([1, 2, 3, 4, 5])
self.assertEqual(v.Value[1], 2)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Value, v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
now = datetime.utcnow()
v = ua.Variant([now])
self.assertEqual(v.Value[0], now)
self.assertEqual(v.VariantType, ua.VariantType.DateTime)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Value, v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
def test_variant_dimensions(self):
l = [[[1.0, 1.0, 1.0, 1.0], [2.0, 2.0, 2.0, 2.0], [3.0, 3.0, 3.0, 3.0]], [[5.0, 5.0, 5.0, 5.0], [7.0, 8.0, 9.0, 01.0], [1.0, 1.0, 1.0, 1.0]]]
v = ua.Variant(l)
self.assertEqual(v.Dimensions, [2, 3, 4])
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v, v2)
self.assertEqual(v.Dimensions, v2.Dimensions)
# very special case
l = [[[], [], []], [[], [], []]]
v = ua.Variant(l, ua.VariantType.UInt32)
self.assertEqual(v.Dimensions, [2, 3, 0])
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Dimensions, v2.Dimensions)
self.assertEqual(v, v2)
def test_variant_dimensions(self):
l = [[[1.0, 1.0, 1.0, 1.0], [2.0, 2.0, 2.0, 2.0], [3.0, 3.0, 3.0, 3.0]], [[5.0, 5.0, 5.0, 5.0], [7.0, 8.0, 9.0, 01.0], [1.0, 1.0, 1.0, 1.0]]]
v = ua.Variant(l)
self.assertEqual(v.Dimensions, [2, 3, 4])
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v, v2)
self.assertEqual(v.Dimensions, v2.Dimensions)
# very special case
l = [[[], [], []], [[], [], []]]
v = ua.Variant(l, ua.VariantType.UInt32)
self.assertEqual(v.Dimensions, [2, 3, 0])
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Dimensions, v2.Dimensions)
self.assertEqual(v, v2)
def test_variant_array(self):
v = ua.Variant([1, 2, 3, 4, 5])
self.assertEqual(v.Value[1], 2)
# self.assertEqual(v.VarianType, ua.VariantType.Int64) # we do not care, we should aonly test for sutff that matter
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Value, v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
now = datetime.utcnow()
v = ua.Variant([now])
self.assertEqual(v.Value[0], now)
self.assertEqual(v.VariantType, ua.VariantType.DateTime)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Value, v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
def test_variant_array(self):
v = ua.Variant([1, 2, 3, 4, 5])
self.assertEqual(v.Value[1], 2)
# self.assertEqual(v.VarianType, ua.VariantType.Int64) # we do not care, we should aonly test for sutff that matter
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Value, v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
now = datetime.utcnow()
v = ua.Variant([now])
self.assertEqual(v.Value[0], now)
self.assertEqual(v.VariantType, ua.VariantType.DateTime)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Value, v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
def read_node_history(self, node_id, start, end, nb_values):
with self._lock:
_c_read = self._conn.cursor()
table = self._get_table_name(node_id)
start_time, end_time, order, limit = self._get_bounds(start, end, nb_values)
cont = None
results = []
# select values from the database; recreate UA Variant from binary
try:
for row in _c_read.execute('SELECT * FROM "{tn}" WHERE "SourceTimestamp" BETWEEN ? AND ? '
'ORDER BY "_Id" {dir} LIMIT ?'.format(tn=table, dir=order),
(start_time, end_time, limit,)):
# rebuild the data value object
dv = ua.DataValue(variant_from_binary(Buffer(row[6])))
dv.ServerTimestamp = row[1]
dv.SourceTimestamp = row[2]
dv.StatusCode = ua.StatusCode(row[3])
results.append(dv)
except sqlite3.Error as e:
self.logger.error('Historizing SQL Read Error for %s: %s', node_id, e)
if nb_values:
if len(results) > nb_values:
cont = results[nb_values].SourceTimestamp
results = results[:nb_values]
return results, cont
def test_custom_variant(self):
with self.assertRaises(ua.UaError):
v = ua.Variant(b"ljsdfljds", ua.VariantTypeCustom(89))
v = ua.Variant(b"ljsdfljds", ua.VariantTypeCustom(61))
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.VariantType, v2.VariantType)
self.assertEqual(v, v2)
def read_node_history(self, node_id, start, end, nb_values):
with self._lock:
_c_read = self._conn.cursor()
table = self._get_table_name(node_id)
start_time, end_time, order, limit = self._get_bounds(start, end, nb_values)
cont = None
results = []
# select values from the database; recreate UA Variant from binary
try:
for row in _c_read.execute('SELECT * FROM "{tn}" WHERE "SourceTimestamp" BETWEEN ? AND ? '
'ORDER BY "_Id" {dir} LIMIT ?'.format(tn=table, dir=order),
(start_time, end_time, limit,)):
# rebuild the data value object
dv = ua.DataValue(variant_from_binary(Buffer(row[6])))
dv.ServerTimestamp = row[1]
dv.SourceTimestamp = row[2]
dv.StatusCode = ua.StatusCode(row[3])
results.append(dv)
except sqlite3.Error as e:
self.logger.error('Historizing SQL Read Error for %s: %s', node_id, e)
if nb_values:
if len(results) > nb_values:
cont = results[nb_values].SourceTimestamp
results = results[:nb_values]
return results, cont
def test_custom_variant(self):
with self.assertRaises(ua.UaError):
v = ua.Variant(b"ljsdfljds", ua.VariantTypeCustom(89))
v = ua.Variant(b"ljsdfljds", ua.VariantTypeCustom(61))
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.VariantType, v2.VariantType)
self.assertEqual(v, v2)
def test_variant_array_dim(self):
v = ua.Variant([1, 2, 3, 4, 5, 6], dimensions=[2, 3])
self.assertEqual(v.Value[1], 2)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(_reshape(v.Value, (2, 3)), v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
self.assertEqual(v.Dimensions, v2.Dimensions)
self.assertEqual(v2.Dimensions, [2, 3])
def test_variant_array_dim(self):
v = ua.Variant([1, 2, 3, 4, 5, 6], dimensions=[2, 3])
self.assertEqual(v.Value[1], 2)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(_reshape(v.Value, (2, 3)), v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
self.assertEqual(v.Dimensions, v2.Dimensions)
self.assertEqual(v2.Dimensions, [2, 3])
def test_extension_object(self):
obj = ua.UserNameIdentityToken()
obj.UserName = "******"
obj.Password = b"pass"
obj2 = extensionobject_from_binary(ua.utils.Buffer(extensionobject_to_binary(obj)))
self.assertEqual(type(obj), type(obj2))
self.assertEqual(obj.UserName, obj2.UserName)
self.assertEqual(obj.Password, obj2.Password)
v1 = ua.Variant(obj)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v1)))
self.assertEqual(type(v1), type(v2))
self.assertEqual(v1.VariantType, v2.VariantType)
def test_extension_object(self):
obj = ua.UserNameIdentityToken()
obj.UserName = "******"
obj.Password = b"pass"
obj2 = extensionobject_from_binary(ua.utils.Buffer(extensionobject_to_binary(obj)))
self.assertEqual(type(obj), type(obj2))
self.assertEqual(obj.UserName, obj2.UserName)
self.assertEqual(obj.Password, obj2.Password)
v1 = ua.Variant(obj)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v1)))
self.assertEqual(type(v1), type(v2))
self.assertEqual(v1.VariantType, v2.VariantType)
def test_variant(self):
dv = ua.Variant(True, ua.VariantType.Boolean)
self.assertEqual(dv.Value, True)
self.assertEqual(type(dv.Value), bool)
now = datetime.utcnow()
v = ua.Variant(now)
self.assertEqual(v.Value, now)
self.assertEqual(v.VariantType, ua.VariantType.DateTime)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Value, v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
# commonity method:
self.assertEqual(v, ua.Variant(v))
def test_variant(self):
dv = ua.Variant(True, ua.VariantType.Boolean)
self.assertEqual(dv.Value, True)
self.assertEqual(type(dv.Value), bool)
now = datetime.utcnow()
v = ua.Variant(now)
self.assertEqual(v.Value, now)
self.assertEqual(v.VariantType, ua.VariantType.DateTime)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.Value, v2.Value)
self.assertEqual(v.VariantType, v2.VariantType)
# commonity method:
self.assertEqual(v, ua.Variant(v))
def read_event_history(self, source_id, start, end, nb_values, evfilter):
with self._lock:
_c_read = self._conn.cursor()
table = self._get_table_name(source_id)
start_time, end_time, order, limit = self._get_bounds(
start, end, nb_values)
clauses, clauses_str = self._get_select_clauses(
source_id, evfilter)
cont = None
cont_timestamps = []
results = []
# select events from the database; SQL select clause is built from EventFilter and available fields
try:
for row in _c_read.execute(
'SELECT "_Timestamp", {cl} FROM "{tn}" WHERE "_Timestamp" BETWEEN ? AND ? ORDER BY "_Id" {dir} LIMIT ?'
.format(cl=clauses_str, tn=table,
dir=order), (start_time, end_time, limit)):
fdict = {}
cont_timestamps.append(row[0])
for i, field in enumerate(row[1:]):
if field is not None:
fdict[clauses[i]] = variant_from_binary(
Buffer(field))
else:
fdict[clauses[i]] = ua.Variant(None)
results.append(events.Event.from_field_dict(fdict))
except sqlite3.Error as e:
self.logger.error(
'Historizing SQL Read Error events for node %s: %s',
source_id, e)
if nb_values:
if len(results) > nb_values: # start > ua.get_win_epoch() and
cont = cont_timestamps[nb_values]
results = results[:nb_values]
return results, cont
def read_event_history(self, source_id, start, end, nb_values, evfilter):
with self._lock:
_c_read = self._conn.cursor()
table = self._get_table_name(source_id)
start_time, end_time, order, limit = self._get_bounds(start, end, nb_values)
clauses, clauses_str = self._get_select_clauses(source_id, evfilter)
cont = None
cont_timestamps = []
results = []
# select events from the database; SQL select clause is built from EventFilter and available fields
try:
for row in _c_read.execute(
'SELECT "_Timestamp", {cl} FROM "{tn}" WHERE "_Timestamp" BETWEEN ? AND ? ORDER BY "_Id" {dir} LIMIT ?'
.format(cl=clauses_str, tn=table, dir=order), (start_time, end_time, limit)):
fdict = {}
cont_timestamps.append(row[0])
for i, field in enumerate(row[1:]):
if field is not None:
fdict[clauses[i]] = variant_from_binary(Buffer(field))
else:
fdict[clauses[i]] = ua.Variant(None)
results.append(events.Event.from_field_dict(fdict))
except sqlite3.Error as e:
self.logger.error('Historizing SQL Read Error events for node %s: %s', source_id, e)
if nb_values:
if len(results) > nb_values: # start > ua.get_win_epoch() and
cont = cont_timestamps[nb_values]
results = results[:nb_values]
return results, cont
def test_variant_empty_list(self):
v = ua.Variant([], varianttype=ua.VariantType.Int32, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
self.assertEqual(v, v2)
self.assertTrue(v2.is_array)
def test_custom_variant_array(self):
v = ua.Variant([b"ljsdfljds", b"lkjsdljksdf"], ua.VariantTypeCustom(40))
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.VariantType, v2.VariantType)
self.assertEqual(v, v2)
def test_variant_empty_list(self):
v = ua.Variant([], varianttype=ua.VariantType.Int32, is_array=True)
data = variant_to_binary(v)
v2 = variant_from_binary(ua.utils.Buffer(data))
self.assertEqual(v, v2)
self.assertTrue(v2.is_array)
def test_guid(self):
v = ua.Variant(uuid.uuid4(), ua.VariantType.Guid)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.VariantType, v2.VariantType)
self.assertEqual(v, v2)
def test_guid(self):
v = ua.Variant(uuid.uuid4(), ua.VariantType.Guid)
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.VariantType, v2.VariantType)
self.assertEqual(v, v2)
def test_custom_variant_array(self):
v = ua.Variant([b"ljsdfljds", b"lkjsdljksdf"],
ua.VariantTypeCustom(40))
v2 = variant_from_binary(ua.utils.Buffer(variant_to_binary(v)))
self.assertEqual(v.VariantType, v2.VariantType)
self.assertEqual(v, v2)