def test_default_options(self, strict_redis_cls):
client = Redis('redis-uri')
client.redis_uri = 'redis-uri'
client.start()
assert [call('redis-uri', decode_responses=True)
] == strict_redis_cls.from_url.call_args_list
class ConsumerService:
"""
Microservice responsible for consume data notifications from Service4 and
dispatching those data to the Client by saving those data to Redis database.
Attributes:
name (str): The microservice name.
_publication (Exchange): Messagin exchange object.
_queue (Queue): Messaging publications queue to be consumed.
_redis (Redis): Nameko Redis connector object.
"""
name = 'consumer'
_publication = Exchange('new_publication', type='direct')
_queue = Queue('publication_queue', exchange=_publication)
_redis = Redis('my_redis')
@consume(_queue)
def receive_new_publication(self, payload: str):
"""
Responsible for consuming incoming data received from service4 by
saving data to Redis Queue.
Args:
payload (str): Data to be consumed.
"""
try:
self._redis.rpush('publication_queue', payload)
except Exception as e:
print('Ooops!', e)
class RoomService:
"""
Room service class
"""
name = "bookings_service"
redis = Redis('development')
@rpc
def get(self, booking_id):
"""
get a room by id
:param booking_id:
:return:
"""
booking = self.redis.get(booking_id)
return booking
@rpc
def create(self, booking):
"""
Create a room
:param booking:
:return:
"""
booking_id = uuid.uuid4().hex
self.redis.set(booking_id, booking)
return booking_id
class SalesforceService:
name = 'salesforce'
contacts_rpc = RpcProxy('contacts')
salesforce = SalesforceAPI()
source_tracker = SourceTracker()
redis = Redis('lock')
@event_handler('contacts', 'contact_created')
def handle_platform_contact_created(self, payload):
if self.source_tracker.is_sourced_from_salesforce():
print("Ignoring event that was sourced from salesforce")
return
result = self.salesforce.Contact.create(
{'LastName': payload['contact']['name']})
print('Created {} on salesforce'.format(result))
@handle_sobject_notification('Contact',
exclude_current_user=True,
notify_for_operation_update=False)
@skip_duplicates(operator.attrgetter('redis'), key=skip_duplicate_key)
def handle_sf_contact_created(self, sobject_type, record_type,
notification):
with self.source_tracker.sourced_from_salesforce():
contact = self.contacts_rpc.create_contact(
{'name': notification['sobject']['Name']})
print('Created {} on platform'.format(contact))
class ArithmeticService:
name = 'arithmetic'
redis = Redis('newton')
@rpc
def calculate(self, procedure_uuid: str):
arithmetic_procedure = json.loads(self.redis.get(procedure_uuid))
status = None
if not arithmetic_procedure:
logging.error('Couldnt find procedure with uuid %s to calculate',
procedure_uuid)
try:
operation_function = _OPERATION_FUNCTION[
arithmetic_procedure['operation']]
arithmetic_procedure['result'] = operation_function(
*arithmetic_procedure['arguments'])
status = PROCEDURE_STATUS_DONE
except ArithmeticError as error:
logging.error(error)
status = str(error)
except Exception as exception:
logging.error(exception)
status = PROCEDURE_STATUS_ERROR
finally:
logging.info('Procedure with uuid %s calculation finished',
procedure_uuid)
arithmetic_procedure['status'] = status
self.redis.set(procedure_uuid, json.dumps(arithmetic_procedure))
class TripsService:
name = "trips_service"
redis = Redis('development')
@rpc
def get(self, trip_id):
trip = self.redis.hgetall(trip_id)
return trip
@rpc
def create(self, airport_from_id, airport_to_id):
trip_id = uuid.uuid4().hex
self.redis.hmset(trip_id, {
"from": airport_from_id,
"to": airport_to_id
})
return trip_id
# @rpc
# def get_trip_with_aid(self, airport_id):
# trip_id = uuid.uuid4().hex
# self.redis.hmset(trip_id, {
# "from": airport_from_id,
# "to": airport_to_id
# })
# return trip_id
class AddressService:
logger = logging.getLogger(__name__)
name = 'addresses'
redis = Redis('development')
def _schema(self, **kwargs):
_data = {
'id': kwargs.get('id',
uuid.uuid4().hex),
'street_1': kwargs.get('street_1', None),
'street_2': kwargs.get('street_2', None),
'city': kwargs.get('city', None),
'province': kwargs.get('province', None),
'postal_code': kwargs.get('postal_code', None),
'country': kwargs.get('country', None),
}
return dict((k, v) for k, v in _data.items() if v is not None)
@rpc
def create(self, **kwargs):
data = self._schema(**kwargs)
self.redis.hmset(data.get('id'), data)
return data.get('id')
@rpc
def get(self, address_id):
self.logger.info(address_id)
address = self.redis.hgetall(address_id)
return address
class TripsService(object):
name = "trips_service"
redis = Redis("development")
@rpc
def get(self, trip_id):
"""
Gets the trip object from Redis database using the trip_id
:param: trip_id
:return: Trip object
:rtype: object
"""
trip = self.redis.get(trip_id)
return trip
@rpc
def create(self, airport_from_id, airport_to_id):
"""
Creates a Trip object with the airiport_from_id and airport_do_id
:param: airport_from_id Where the trip beings
:param: airport_to_id Id of the airport for the given destination
:return: Trip id
:rtype: str
"""
trip_id = uuid.uuid4().hex
self.redis.set(trip_id, {"from": airport_from_id, "to": airport_to_id})
return trip_id
class EventsComponet:
name = 'events_component'
redis = Redis('cache', encoding='utf-8')
@event_handler('command_stack', 'news_created')
def news_created_normalize_db(self, data):
try:
del data['version']
del data['status']
NewsQueryModel(**data).save()
self.set_cache(data)
except Exception as e:
logging.error(e)
@event_handler('command_stack', 'news_edited')
def news_edited_normalize_db(self, data):
try:
del data['version']
del data['status']
news = NewsQueryModel.objects.get(id=data.get('id'))
news.update(**data)
news.reload()
self.set_cache(data)
except Exception as e:
logging.error(e)
def set_cache(self, data):
redis_data = json.dumps(data)
self.redis.set(data.get('id'), redis_data)
if not self.redis.get(data.get('id')):
self.redis.rpush(CACHE_ALL, data.get('id'))
class AirportService(object):
name = "airports_service"
redis = Redis("development")
@rpc
def get(self, airport_id):
"""
Gets the airport object from Redis database using the airport_id
:param: airport_id
:return: Airport object
:rtype: object
"""
airport = self.redis.get(airport_id)
return airport
@rpc
def create(self, airport):
"""
Creates an airport object and returns the airport id
:param: airport Airport Object
:return: Airport id
:rtype: str
"""
airport_id = uuid.uuid4().hex
self.redis.set(airport_id, airport)
return airport_id
class CrewService:
name = 'crew_service'
log = StructlogDependency()
redis = Redis('development')
@rpc
def get(self, crew_id):
self.log.info('start-get-crew')
crew = self.redis.hgetall(crew_id)
self.log.info('get-crew', crew_id=crew_id, crew=crew)
self.log.info('end-get-crew')
return crew
@rpc
def add(self, ship_id, name, designation, crew_race):
self.log.info('start-add-crew')
crew_id = uuid.uuid4().hex
crew = {
"ship_id": ship_id,
"name": name,
"designation": designation,
"race": crew_race
}
self.log.info("add-crew", crew=crew, crew_id=crew_id)
self.redis.hmset(crew_id, crew)
self.log.info('end-add-crew')
return crew_id
class RoomService:
"""
Room service class
"""
name = "rooms_service"
redis = Redis('development')
@rpc
def get(self, room_id):
"""
get a room by id
:param room_id:
:return:
"""
room = self.redis.hget(room_id)
return room
@rpc
def create(self, room_user, room_number):
"""
Create a room
:param room_user:
:param room_number:
:return:
"""
room_id = uuid.uuid4().hex
self.redis.hmset(room_id, {
"room_user": room_user,
"room_number": room_number
})
return room_id
class SalesforceService:
name = 'salesforce'
contacts_rpc = RpcProxy('contacts')
salesforce = SalesforceAPI()
source_tracker = SourceTracker()
redis = Redis('lock')
schedule_task = ScheduleTask()
@event_handler('contacts', 'contact_created')
def handle_platform_contact_created(self, payload):
if self.source_tracker.is_sourced_from_salesforce():
print("Ignoring event that was sourced from salesforce")
return
self.schedule_task(self.create_on_salesforce, payload)
@handle_sobject_notification('Contact',
exclude_current_user=True,
notify_for_operation_update=False)
@skip_duplicates(operator.attrgetter('redis'), key=skip_duplicate_key)
def handle_sf_contact_created(self, sobject_type, record_type,
notification):
self.schedule_task(self.create_on_platform, notification)
@task
@debounce(operator.attrgetter('redis'), key=debounce_key_sf, repeat=True)
@entrypoint_retry(
retry_for=ValueError,
limit=4,
schedule=(1000, 1000, 2000),
)
def create_on_salesforce(self, payload):
print('Trying to create on salesforce...')
raise ValueError()
result = self.salesforce.Contact.create(
{'LastName': payload['contact']['name']})
print('Created {} on salesforce'.format(result))
@task
@debounce(operator.attrgetter('redis'), key=debounce_key_plat, repeat=True)
@entrypoint_retry(
retry_for=ValueError,
limit=4,
schedule=(1000, 1000, 2000),
)
def create_on_platform(self, payload):
with self.source_tracker.sourced_from_salesforce():
contact = self.contacts_rpc.create_contact(
{'name': payload['sobject']['Name']})
print('Created {} on platform'.format(contact))
class TemperatureService:
name = ServicesNames.TEMPERATURE_SERVICE
dispatch = EventDispatcher()
redis = Redis(REDIS_NAME)
@rpc
def update_temperature(self):
humidity, temperature = dht.read_retry(dht.DHT22,
TEMPERATURE_SENSOR_PIN)
self.redis.set('temperature', temperature)
def test_options(self, strict_redis_cls):
client = Redis('redis-uri',
decode_responses=False,
retry_on_timeout=True,
socket_timeout=2,
encoding='utf-8')
client.redis_uri = 'redis-uri'
client.start()
expected_options = {
'decode_responses': False,
'retry_on_timeout': True,
'socket_timeout': 2,
'encoding': 'utf-8',
}
assert [call('redis-uri', **expected_options)
] == strict_redis_cls.from_url.call_args_list
class ExampleService(object):
name = "exampleservice"
redis = Redis('server')
@dummy
def write(self, value):
self.redis.set(TEST_KEY, value)
@dummy
def read(self):
return self.redis.get(TEST_KEY)
class TripsService:
name = 'trips_service'
redis = Redis('development')
@rpc
def get(self, trip_id):
trip = self.redis.get(trip_id)
return trip
@rpc
def create(self, airport_from_id, airport_to_id):
trip_id = uuid.uuid4().hex
self.redis.set(trip_id, {"from": airport_from_id, "to": airport_to_id})
return trip_id
class AirportsService:
name = 'airports_service'
redis = Redis('development')
@rpc
def get(self, airport_id):
airport = self.redis.get(airport_id)
return airport
@rpc
def create(self, airport):
airport_id = uuid.uuid4().hex
self.redis.set(airport_id, airport)
return airport_id
class Service4:
"""
Microservice responsible for receiving data notifications from Service3 and
dispatching those data to the Client.
Attributes:
name (str): The microservice name.
_redis (Redis): Nameko Redis connector object.
_publication (Exchange): Messagin exchange object.
_publish (Publisher): Messaging publisher object.
"""
name = 'service4'
_redis = Redis('my_redis')
_publication = Exchange('new_publication', type='direct')
_publish = Publisher(exchange=_publication)
@event_handler('service3', 'number_published')
def receive_publication(self, payload: str):
"""
Event handler function receiver published number from service3
Args:
payload (str): A new number published according service3 rules
"""
self.dispatch_publication(payload)
@rpc
def dispatch_publication(self, payload: str):
"""
Notify an event with the passed payload
:param payload: A published number to be notify to the client
"""
self._publish(payload)
@rpc
def get_history(self) -> List[str]:
"""
Get the last 100 publications from Redis Database
Returns:
List[str]: Last publications
"""
if self._redis.llen('published_numbers') > 100:
history = self._redis.lrange('published_numbers', -100, -1)
else:
history = self._redis.lrange('published_numbers', 0, -1)
return history
class DriverService:
name = "driver_service"
redis = Redis("development")
@rpc
def get(self, driver_id):
driver = self.redis.get(driver_id)
return driver
@rpc
def create(self, driver_name):
driver_id = str(uuid.uuid4())
self.redis.set(driver_id, driver_name)
return driver_id
class PassengerService:
name = "passenger_service"
redis = Redis("development")
@rpc
def get(self, passenger_id):
passenger = self.redis.get(passenger_id)
return passenger
@rpc
def create(self, passenger_name):
passenger_id = int(uuid.uuid4())
self.redis.set(passenger_id, passenger_name)
return passenger_id
class UltrasoundService:
name = ServicesNames.ULTRASOUND_SERVICE
dispatch = EventDispatcher()
redis = Redis(REDIS_NAME)
@staticmethod
def distance(ultrasound_sensor, temperature):
GPIO.output(ultrasound_sensor.trigger_pin, True)
time.sleep(0.00001)
GPIO.output(ultrasound_sensor.trigger_pin, False)
StartTime = time.time()
StopTime = time.time()
# save StartTime
while GPIO.input(ultrasound_sensor.echo_pin) == 0:
StartTime = time.time()
# save time of arrival
while GPIO.input(ultrasound_sensor.echo_pin) == 1:
StopTime = time.time()
# time difference between start and arrival
TimeElapsed = StopTime - StartTime
# distance = (TimeElapsed * 34300*(1+float(temperature)/273)) / 2
distance = (TimeElapsed * 34300) / 2
return distance
@rpc
def run(self):
temperature = self.redis.get('temperature')
if not temperature:
temperature = 25
right_front_distance = self.distance(ULTRA_SOUND_SENSOR_RIGHT,
temperature)
left_front_distance = self.distance(ULTRA_SOUND_SENSOR_LEFT,
temperature)
middle_front_distance = self.distance(ULTRA_SOUND_SENSOR_MIDDLE,
temperature)
if right_front_distance < 15 or middle_front_distance < 15 or left_front_distance < 15:
self.dispatch(EventNames.TRIGGER_LIGHTS, True)
self.dispatch(EventNames.TRIGGER_ENGINES, {'drive': False})
else:
self.dispatch(EventNames.TRIGGER_LIGHTS, False)
self.dispatch(EventNames.TRIGGER_ENGINES, {
'drive': True,
'direction': 'forward'
})
class CameraService:
name = ServicesNames.CAMERA_SERVICE
dispatch = EventDispatcher()
redis = Redis(REDIS_NAME)
@classmethod
def string_base64_to_image(cls, base64_string):
imgdata = base64.b64decode(base64_string)
return cv2.cvtColor(np.array(Image.open(io.BytesIO(imgdata))),
cv2.COLOR_RGB2BGR)
@rpc
def run(self, image):
steering_angle = LaneRecognition.process_image(
self.string_base64_to_image(image))
print(steering_angle)
self.dispatch(EventNames.TRIGGER_ENGINES,
{'steering_angle': steering_angle})
class ShoppingCartService:
logger = logging.getLogger(__name__)
name = 'shopping_carts'
redis = Redis('development')
def _schema(self, **kwargs):
_data = {
'id': kwargs.get('id',
uuid.uuid4().hex),
'account_id': kwargs.get('account_id', None),
'listings': kwargs.get('listings', {}),
}
return dict((k, v) for k, v in _data.items() if v)
@rpc
def create(self, account_id, listings=None):
cart = ShoppingCart.create(account_id)
data = self._schema(**cart.to_dict())
cart_id = data.get('id')
self._write_data(cart_id, data)
return cart_id
@rpc
def get(self, cart_id):
cart = self.redis.hgetall(cart_id)
self.logger.info(cart)
return cart
@rpc
def add_listing(self, cart_id: str, listing_id: str,
quantity: int) -> None:
data = self.redis.hgetall(cart_id)
cart = ShoppingCart.from_dict(data)
cart.add_listing(listing_id, quantity)
self.logger.info(cart)
return cart
def _write_data(self, _id, data):
self.redis.hmset(_id, data)
return _id
class QueryNewsService:
name = 'query_stack'
redis = Redis('cache', encoding='utf-8')
@rpc
def list_news(self, page, limit):
try:
if not page:
page = 1
offset = (page - 1) * limit
# gettting list from cache
news_list = self.redis.lrange(CACHE_ALL, (page - 1), limit)
if news_list:
logging.info('list from cache')
return json.dumps(
[self.redis.get(news_id) for news_id in news_list])
news_list = NewsQueryModel.objects.skip(offset).limit(limit)
logging.info('list from DB')
return news_list.to_json()
except Exception as e:
logging.error(e)
return json.dumps({'error': str(e)})
@rpc
def get_news(self, news_id):
try:
# getting from cache
news = self.redis.get(news_id)
if news:
logging.info('from cache')
return news
news = NewsQueryModel.objects.get(id=news_id)
logging.info('from DB')
return news.to_json()
except mongoengine.DoesNotExist as e:
logging.error(e)
return json.dumps({'error': str(e)})
except Exception as e:
logging.error(e)
return json.dumps({'error': str(e)})
class TripService:
name = "trip_service"
redis = Redis("development")
@rpc
def get(self, trip_id):
trip_data = self.redis.hgetall(trip_id)
return trip_data
@rpc
def create(self, passenger_name, driver_name, from_loc, to_loc):
trip_id = str(uuid.uuid4())
self.redis.hmset(trip_id, {
"passenger_name": passenger_name,
"driver_name": driver_name,
"from_loc": from_loc,
"to_loc": to_loc
})
return trip_id
class ShipService:
name = 'ship_service'
log = StructlogDependency()
redis = Redis('development')
@rpc
def get(self, ship_id):
self.log.info('start-get-ship')
ship = self.redis.get(ship_id)
self.log.info('get-ship', ship_id=ship_id, ship=ship)
self.log.info('end-get-ship')
return ship
@rpc
def add(self, ship):
self.log.info('start-add-ship')
ship_id = uuid.uuid4().hex
self.log.info('add-ship', ship_id=ship_id, ship=ship)
self.redis.set(ship_id, ship)
self.log.info('end-add-ship')
return ship_id
class PricingService:
def __init__(self, json_string):
instance = parse_as_obj(json_string)
self.content = json_string
self.customerId = instance.customerId
self.createdDate = instance.createdDate
self.deliveryType = instance.deliveryType
self.address = instance.address
if hasattr(instance, 'items'):
self.items = []
for item in instance.items:
self.items.append(Product(item))
_DEFAULT_DATE_FORMAT = "%Y-%m-%d"
_FACTOR = 320
redis = Redis('development')
@property
def is_valid(self):
return len(self.items) and all(
[item.is_valid() for item in self.items])
class AirportsService:
name = "airports_service"
redis = Redis('development')
# Now the struture is following
# airport_id: {
# airport: string,
# trips: array
# }
@rpc
def get(self, airport_id):
airport = self.redis.get(airport_id)
print(airport)
return airport
@rpc
def create(self, airport):
airport_id = uuid.uuid4().hex
print("aaaaaaaaaaaaaaaaaaaaaaaaa")
self.redis.hmset(airport_id, {'airport': airport, 'trips': None})
return airport_id
class TimeService:
name = "time_service"
day_coef = [1, 1, 1, 1, 1, .75, .5]
parameter_service = RpcProxy('parameter_service')
redis = Redis('development')
# TODO implement timezones (Now let's leave only UTC for simplicity)
@staticmethod
def get_now():
return datetime.datetime.utcnow()
def get_today(self):
now = self.get_now()
return datetime.datetime(now.year, now.month, now.day)
def get_end_of_year(self):
now = self.get_now()
return datetime.datetime(now.year + 1, 1, 1) - datetime.timedelta(1)
@staticmethod
def get_num_days_between(start: datetime, end: datetime,
week_day: int) -> int:
num_weeks, remainder = divmod((end - start).days, 7)
if (week_day - start.weekday()) % 7 <= remainder:
return num_weeks + 1
else:
return num_weeks
def get_seconds_until_midnight(self, dt: datetime = None) -> int:
dt = dt or self.get_now()
this_day = datetime.datetime(dt.year, dt.month, dt.day)
next_day = this_day + datetime.timedelta(1)
return abs(next_day - dt).seconds
def get_days_until_midnight(self, dt: datetime = None) -> float:
dt = dt or self.get_now()
this_day = datetime.datetime(dt.year, dt.month, dt.day)
time_in_days = self.get_seconds_until_midnight(dt) / (24 * 60 * 60)
return self.day_coef[this_day.weekday()] * time_in_days
@rpc
def get_time_left(self,
dt: datetime = None,
until_day: datetime = None) -> float:
dt = dt or self.get_now()
until_day = until_day or self.get_end_of_year()
time_in_days = self.get_days_until_midnight(dt)
# TODO Cache this_day and time_in_days. Makes sense to recalculate only when this_day != cache
this_day = datetime.datetime(dt.year, dt.month, dt.day)
next_day = this_day + datetime.timedelta(1)
for i, coef in enumerate(self.day_coef):
time_in_days += coef * self.get_num_days_between(
next_day, until_day, i)
return time_in_days
def set_timer(self, days: float, callback, *args, **kwargs):
period = days * (24 * 60 *
60) / self.day_coef[self.get_today().weekday()]
timer = threading.Timer(period, callback, args, kwargs)
timer.start()
# TODO Investigate how to pass callback without wrapping them in time_service
@rpc
def update_param_after(self, days):
self.set_timer(days, self.parameter_service.update_param)
