def detect_change(data):
mydb = connect_to_db()
mycursor = mydb.cursor(prepared=True)
for i in range(len(data)):
item = data[i]
print(item.condition_text)
print("last_value: {}".format(item.last_value))
condition = Condition(item.condition_text)
query_string = 'http://{}/marketdata/{}'.format(marketdata_host, item.symbol)
dat = requests.get(url = query_string).json()
is_condition_true = condition.evaluate(dat)
last_value = item.last_value
item.last_value = is_condition_true
data[i] = item
print(dat)
print(condition.evaluate(dat))
# Only notify if true and it previously was not true, to avoid constant notifications
if condition.evaluate(dat) and last_value != is_condition_true:
user = fetch_user(item.user_id, mycursor)
print('Notifying user: {}'.format(user.username))
text = "{}%20your%20notification%20for%20{}:%20{}".format(user.username, item.symbol, item.condition_text)
if item.notification_method == NOTIFICATION_METHOD.SMS:
query_string = 'http://{}:{}/notify/text?message={}&number=test_num'.format(notification_service_host, notification_service_port, text)
requests.post(url = query_string)
elif item.notification_method == NOTIFICATION_METHOD.EMAIL:
query_string = 'http://{}:{}/notify/email?message={}&email=test_address'.format(notification_service_host, notification_service_port, text)
requests.post(url = query_string)
elif item.notification_method == NOTIFICATION_METHOD.BOTH:
query_string = 'http://{}:{}/notify/text?message={}&number=test_num'.format(notification_service_host, notification_service_port, text)
requests.post(url = query_string)
query_string = 'http://{}:{}/notify/email?message={}&email=test_address'.format(notification_service_host, notification_service_port, text)
requests.post(url = query_string)
mydb.disconnect()
return data
def test_equality_false(self):
cond = Condition('x == y')
self.assertEqual(False, cond.evaluate(self.data), 'Should be equal')
def test_multiple_conditions_beginning_and_end_brackets(self):
cond = Condition('( x == y or z < 1 ) and ( x == y and z == x)')
# Will evaluate to ( False or True ) and ( False and True )
self.assertEqual(False, cond.evaluate(self.data), 'Should be equal')
def test_multiple_conditions_end_brackets(self):
cond = Condition('x == y or ( x == z and y > z )')
# Will evaluate to False or ( True and True )
self.assertEqual(True, cond.evaluate(self.data), 'Should be equal')
def test_multiple_conditions_beginning_brackets_2(self):
# Will evaluate to ( False and True) and True
cond = Condition('( x == y and x >= 1 ) and z == 1')
self.assertEqual(False, cond.evaluate(self.data), 'Should be equal')
def test_multiple_conditions_with_and(self):
cond = Condition('x == y and x >= 1')
self.assertEqual(False, cond.evaluate(self.data), 'Should be equal')
def test_multiple_conditions_with_or(self):
cond = Condition('x == y or x >= 1')
self.assertEqual(True, cond.evaluate(self.data), 'Should be equal')
