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tests_history.py
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import time
from datetime import datetime, timedelta
import unittest
from opcua import Client
from opcua import Server
from opcua import ua
from opcua.server.history_sql import HistorySQLite
from opcua.server.history import HistoryDict
from tests_common import CommonTests, add_server_methods
from opcua.common.events import get_event_properties_from_type_node as get_props
port_num1 = 48530
port_num2 = 48530
class HistoryCommon(object):
srv = Server
clt = Client
@classmethod
def start_server_and_client(cls):
cls.srv = Server()
cls.srv.set_endpoint('opc.tcp://127.0.0.1:{0:d}'.format(port_num1))
cls.srv.start()
cls.clt = Client('opc.tcp://127.0.0.1:{0:d}'.format(port_num1))
cls.clt.connect()
@classmethod
def stop_server_and_client(cls):
cls.clt.disconnect()
cls.srv.stop()
@classmethod
def create_var(cls):
o = cls.srv.get_objects_node()
cls.values = [i for i in range(20)]
cls.var = o.add_variable(3, "history_var", 0)
cls.srv.historize_node_data_change(cls.var, period=None, count=0)
for i in cls.values:
cls.var.set_value(i)
time.sleep(1)
# no start and no end is not defined by spec, return reverse order
def test_history_var_read_one(self):
# Spec says that at least two parameters should be provided, so
# this one is out of spec
res = self.var.read_raw_history(None, None, 1)
self.assertEqual(len(res), 1)
self.assertEqual(res[0].Value.Value, self.values[-1])
# no start and no end is not defined by spec, return reverse order
def test_history_var_read_none(self):
res = self.var.read_raw_history(None, None, 0)
self.assertEqual(len(res), 20)
self.assertEqual(res[0].Value.Value, self.values[-1])
self.assertEqual(res[-1].Value.Value, self.values[0])
# no start and no end is not defined by spec, return reverse order
def test_history_var_read_last_3(self):
res = self.var.read_raw_history(None, None, 3)
self.assertEqual(len(res), 3)
self.assertEqual(res[-1].Value.Value, self.values[-3])
self.assertEqual(res[0].Value.Value, self.values[-1])
# no start and no end is not defined by spec, return reverse order
def test_history_var_read_all2(self):
res = self.var.read_raw_history(None, None, 9999)
self.assertEqual(len(res), 20)
self.assertEqual(res[-1].Value.Value, self.values[0])
self.assertEqual(res[0].Value.Value, self.values[-1])
# only has end time, should return reverse order
def test_history_var_read_2_with_end(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.var.read_raw_history(None, now, 2)
self.assertEqual(len(res), 2)
self.assertEqual(res[-1].Value.Value, self.values[-2])
# both start and endtime, return from start to end
def test_history_var_read_all(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.var.read_raw_history(old, now, 0)
self.assertEqual(len(res), 20)
self.assertEqual(res[-1].Value.Value, self.values[-1])
self.assertEqual(res[0].Value.Value, self.values[0])
def test_history_var_read_5_in_timeframe(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.var.read_raw_history(old, now, 5)
self.assertEqual(len(res), 5)
self.assertEqual(res[-1].Value.Value, self.values[4])
self.assertEqual(res[0].Value.Value, self.values[0])
# start time greater than end time, should return reverse order
def test_history_var_read_5_in_timeframe_start_greater_than_end(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.var.read_raw_history(now, old, 5)
self.assertEqual(len(res), 5)
self.assertEqual(res[-1].Value.Value, self.values[-5])
self.assertEqual(res[0].Value.Value, self.values[-1])
# only start return original order
def test_history_var_read_6_with_start(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.var.read_raw_history(old, None, 6)
self.assertEqual(len(res), 6)
self.assertEqual(res[-1].Value.Value, self.values[5])
self.assertEqual(res[0].Value.Value, self.values[0])
# only start return original order
def test_history_var_read_all_with_start(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.var.read_raw_history(old, None, 0)
self.assertEqual(len(res), 20)
self.assertEqual(res[-1].Value.Value, self.values[-1])
self.assertEqual(res[0].Value.Value, self.values[0])
# only end return reversed order
def test_history_var_read_all_with_end(self):
end = datetime.utcnow() + timedelta(days=6)
res = self.var.read_raw_history(None, end, 0)
self.assertEqual(len(res), 20)
self.assertEqual(res[-1].Value.Value, self.values[0])
self.assertEqual(res[0].Value.Value, self.values[-1])
# only end return reversed order
def test_history_var_read_3_with_end(self):
end = datetime.utcnow() + timedelta(days=6)
res = self.var.read_raw_history(None, end, 3)
self.assertEqual(len(res), 3)
self.assertEqual(res[2].Value.Value, self.values[-3])
self.assertEqual(res[0].Value.Value, self.values[-1])
class TestHistoryEvents(object):
@classmethod
def create_srv_events(cls):
cls.ev_values = [i for i in range(20)]
cls.srvevgen = cls.srv.get_event_generator()
cls.srv_node = cls.srv.get_node(ua.ObjectIds.Server)
cls.srv.historize_node_event(cls.srv_node, period=None)
for i in cls.ev_values:
cls.srvevgen.event.Severity = cls.ev_values[i]
cls.srvevgen.trigger(message="test message")
time.sleep(.1)
time.sleep(2)
# only has end time, should return reverse order
def test_history_ev_read_2_with_end(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.srv_node.read_event_history(None, now, 2)
self.assertEqual(len(res), 2)
self.assertEqual(res[-1].Severity, self.ev_values[-2])
# both start and end time, return from start to end
def test_history_ev_read_all(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.srv_node.read_event_history(old, now, 0)
self.assertEqual(len(res), 20)
self.assertEqual(res[-1].Severity, self.ev_values[-1])
self.assertEqual(res[0].Severity, self.ev_values[0])
def test_history_ev_read_5_in_timeframe(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.srv_node.read_event_history(old, now, 5)
self.assertEqual(len(res), 5)
self.assertEqual(res[-1].Severity, self.ev_values[4])
self.assertEqual(res[0].Severity, self.ev_values[0])
# start time greater than end time, should return reverse order
def test_history_ev_read_5_in_timeframe_start_greater_than_end(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.srv_node.read_event_history(now, old, 5)
self.assertEqual(len(res), 5)
self.assertEqual(res[-1].Severity, self.ev_values[-5])
self.assertEqual(res[0].Severity, self.ev_values[-1])
# only start return original order
def test_history_ev_read_6_with_start(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.srv_node.read_event_history(old, None, 6)
self.assertEqual(len(res), 6)
self.assertEqual(res[-1].Severity, self.ev_values[5])
self.assertEqual(res[0].Severity, self.ev_values[0])
# only start return original order
def test_history_ev_read_all_with_start(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.srv_node.read_event_history(old, None, 0)
self.assertEqual(len(res), 20)
self.assertEqual(res[-1].Severity, self.ev_values[-1])
self.assertEqual(res[0].Severity, self.ev_values[0])
# only end return reversed order
def test_history_ev_read_all_with_end(self):
end = datetime.utcnow() + timedelta(days=6)
res = self.srv_node.read_event_history(None, end, 0)
self.assertEqual(len(res), 20)
self.assertEqual(res[-1].Severity, self.ev_values[0])
self.assertEqual(res[0].Severity, self.ev_values[-1])
# only end return reversed order
def test_history_ev_read_3_with_end(self):
end = datetime.utcnow() + timedelta(days=6)
res = self.srv_node.read_event_history(None, end, 3)
self.assertEqual(len(res), 3)
self.assertEqual(res[2].Severity, self.ev_values[-3])
self.assertEqual(res[0].Severity, self.ev_values[-1])
# reverse event filter select clauses and test that results match the filter order
def test_history_ev_read_all_filter_order_reversed(self):
now = datetime.utcnow()
old = now - timedelta(days=6)
res = self.srv_node.read_event_history(old, None, 0)
self.assertEqual(len(res), 20)
self.assertEqual(res[-1].Severity, self.ev_values[-1])
self.assertEqual(res[0].Severity, self.ev_values[0])
class TestHistoryLimitsCommon(unittest.TestCase):
id = ua.NodeId(123)
def setUp(self):
self.history = self.createHistoryInstance()
def createHistoryInstance(self):
assert(False)
def resultCount(self):
results, cont = self.history.read_node_history(self.id, None, None, None)
return len(results)
def addValue(self, age):
value = ua.DataValue()
value.SourceTimestamp = datetime.utcnow() - timedelta(hours = age)
self.history.save_node_value(self.id, value)
def test_count_limit(self):
self.history.new_historized_node(self.id, period=None, count=3)
self.assertEqual(self.resultCount(), 0)
self.addValue(5)
self.assertEqual(self.resultCount(), 1)
self.addValue(4)
self.assertEqual(self.resultCount(), 2)
self.addValue(3)
self.assertEqual(self.resultCount(), 3)
self.addValue(2)
self.assertEqual(self.resultCount(), 3)
self.addValue(1)
self.assertEqual(self.resultCount(), 3)
def test_period_limit(self):
self.history.new_historized_node(self.id, period=timedelta(hours=3))
self.assertEqual(self.resultCount(), 0)
self.addValue(5)
self.assertEqual(self.resultCount(), 0)
self.addValue(4)
self.assertEqual(self.resultCount(), 0)
self.addValue(2)
self.assertEqual(self.resultCount(), 1)
self.addValue(1)
self.assertEqual(self.resultCount(), 2)
self.addValue(0)
self.assertEqual(self.resultCount(), 3)
def test_combined_limit(self):
self.history.new_historized_node(self.id, period=timedelta(hours=3), count=2)
self.assertEqual(self.resultCount(), 0)
self.addValue(5)
self.assertEqual(self.resultCount(), 0)
self.addValue(4)
self.assertEqual(self.resultCount(), 0)
self.addValue(2)
self.assertEqual(self.resultCount(), 1)
self.addValue(1)
self.assertEqual(self.resultCount(), 2)
self.addValue(0)
self.assertEqual(self.resultCount(), 2)
class TestHistoryLimits(TestHistoryLimitsCommon):
def createHistoryInstance(self):
return HistoryDict()
class TestHistorySQLLimits(TestHistoryLimitsCommon):
def createHistoryInstance(self):
return HistorySQLite(":memory:")
class TestHistory(unittest.TestCase, HistoryCommon, TestHistoryEvents):
@classmethod
def setUpClass(cls):
cls.start_server_and_client()
cls.create_var()
cls.create_srv_events()
@classmethod
def tearDownClass(cls):
cls.stop_server_and_client()
class TestHistorySQL(unittest.TestCase, HistoryCommon, TestHistoryEvents):
@classmethod
def setUpClass(cls):
cls.start_server_and_client()
cls.srv.iserver.history_manager.set_storage(HistorySQLite(":memory:"))
cls.create_var()
cls.create_srv_events()
@classmethod
def tearDownClass(cls):
cls.stop_server_and_client()