def get_api_data(url, body, token):
""" This function use to get data from API.
Args:
url (string): required api url.
body (dict): required request body
Returns:
json: The return value. """
# Initialize return value.
return_value = {"statusCode": None, "body": None}
try:
headers = {"Content-Type": "application/json", "Authorization": token}
response = requests.post(url, data=json.dumps(body), headers=headers)
return_value["body"] = response
return_value["statusCode"] = response.status_code
if response.status_code == 200:
logger.info("Successfully called %s with response code of %s", url,
response.status_code)
else:
logger.error("Error calling %s, response code was: %s", url,
response.status_code)
except RequestException as ex:
return_value["statusCode"] = 500
return_value["body"] = str(RequestException)
logger.error("Error calling %s, error was %s", url, str(ex))
return return_value
def re_handler(event, context):
""" This handler function return recommendation acording to vacated shift, shifter parameter.
Args:
event["body"] (dict): request body to get recommendation.
Returns:
json: The return value. """
logger.debug("Received new event: %s", repr(event))
response = {
'statusCode': None,
'headers': {
'Content-Type': 'application/json'
},
'body': str(context) + str(event)
}
vacated_params = event['body']
if vacated_params:
vacated_params = json.loads(vacated_params)
result = recommendations(vacated_params)
response['statusCode'] = result['statusCode']
response['body'] = json.dumps(result)
else:
response['body'] = "Unprocessable Entity"
response['statusCode'] = 422
logger.error("Unable to parse request paramaters")
logger.debug("Lambda Response: %s", repr(response))
return response
def recommendations(vacated_params):
""" This function used to get recommended shifter according to request params.
Args:
vacated_params (dict): vacated shift and shifter data.
Returns:
dict: (List of recommended shifter) The return value. """
# Initialize return value
return_value = {"statusCode": None, "message": None, "body": None}
try:
patterns = ConfigLoaders.get_organizationsetting(
vacated_params["jobProviderId"])
qualified_shifter = get_qualified_shifter(
vacated_params, patterns["disqualify_structures"])
return_value = get_recommended_shifter(qualified_shifter,
vacated_params,
patterns['scoring_structures'])
except BaseException as ex:
logger.error("Error in recommendation function. %s", str(ex))
return_value['statusCode'] = 500
return_value["message"] = "Internal server error!"
return_value['body'] = []
return return_value
def day_overtime_risk(instance):
""" This function used to filter shifter shift and vacated shift over time risk for same day.
Args:
instance (dict): {
shifter_day_hour: shifter shift duration from start to end.
vacated_hour: vacated shift duration from start to end.
disqualify_params: params for filter overtime risk for the same day.
}
Returns:
boolean: The filter status. """
# Initialize return value.
return_value = "qualified"
try:
shifter_shift_hour = instance["shifter_day_hour"]
vacated_shift_hour = instance["vacated_hour"]
disqualify_params = instance["disqualify_params"]
shift_duration_count = shifter_shift_hour + vacated_shift_hour
if shift_duration_count > disqualify_params["day_overtime_range"]:
logger.info("Disqualified Reason: day_overtime_risk")
return_value = "disqualified"
except BaseException as ex:
logger.error(
"Disqualified Reason: EXCEPTION in day_overtime_risk: %s",
str(ex))
return_value = "disqualified"
return return_value
def week_overtime_risk(instance):
""" This function used to filter shifter shift and vacated shift over time risk for a week.
Args:
instance (dict): {
shifter_week_hour: Total conformed shift duration hour in week.
vacated_hour: vacated shift duration from start to end.
disqualify_params: params for filter week over time risk.
Returns:
boolean: The filter status. """
# Initialize return value.
return_value = "qualified"
try:
shifter_week_hour = instance["shifter_week_hour"]
vacated_shift_hour = instance["vacated_hour"]
disqualify_params = instance["disqualify_params"]
week_duration = shifter_week_hour + vacated_shift_hour
if week_duration > disqualify_params["week_overtime_range"]:
logger.info("Disqualified Reason: week_overtime_risk")
return_value = "disqualified"
except BaseException as ex:
logger.error(
"Disqualified Reason: EXCEPTION in week_overtime_risk: %s",
str(ex))
return_value = "disqualified"
return return_value
def shift_overlap(instance):
""" This function used to filter shifter shift time and vacated shift time overlap each other.
Args:
instance (dict): {
shifter_hour_list: List of hours between shifter start and end time.
vacated_hour_list: List of hours between vacated start and end time.
disqualify_params: Status to filter Example: True/False
}
Returns:
boolean: The disqualify status. """
# Initialize return value.
return_value = "qualified"
try:
disqualify_params = instance["disqualify_params"]
overlap = []
if disqualify_params:
shifter_hour_list = instance["shifter_hour_list"]
vacated_hour_list = instance["vacated_hour_list"]
overlap = [
value for value in shifter_hour_list
if value in vacated_hour_list
]
if overlap:
logger.info("Disqualified Reason: shift_overlap")
return_value = "disqualified"
except BaseException as ex:
logger.error("Disqualified Reason: EXCEPTION in shift_overlap: %s",
str(ex))
return_value = "disqualified"
return return_value
def openconnection(connection_key):
""" This function return connection object acording to connection params.
Args:
connection_key (dic): have following keys { username, host, password,
port, authentication_source, db_name }.
Returns:
Object: The return value. """
return_value = {"statusCode": None, "message": None, "body": None}
try:
# Initialize connection string.
mongo_port = int(27017)
try:
mongo_port = int(connection_key["port"])
except ValueError:
logger.error(
"Mongo DB Port should be an integer. Provided value was: %s",
connection_key["port"])
connection_kwargs = {
'username': connection_key['username'],
'host': connection_key['host'],
'password': connection_key['password'],
'port': mongo_port,
'authentication_source': connection_key['authSource']
}
# Get connection.
connect(connection_key['db_name'], **connection_kwargs)
# Get connection object.
connection = get_connection()
# Get database.
database = get_db()
if database.name == connection_key['db_name']:
logger.info("Database connected successfully.")
return_value["statusCode"] = 200
return_value["message"] = "Success"
return_value["body"] = connection
except BaseException as exceptions:
message = str(exceptions)
logger.error("Database connection failed!: %s", message)
return_value["statusCode"] = 500
return_value["message"] = "Internal server error!"
return_value["body"] = None
return return_value
def get_shifters_from_db(vacated_params, disqualify_params):
""" This function used to get filtered shifters data from database.
Args:
vacated_params (dict): Vacated shift, shifter data.
disqualify_params (dict): paramiters to filter data
Returns:
dict: The return value. """
# Initialize return value.
return_value = {"statusCode": None, "message": None, "body": None}
try:
# Check if class Shifters has no objects member.
if 'objects' not in dir(Shifters):
# Assign objects member.
Shifters.objects = QuerySetManager()
# Initialize database connection
response = DbConnection.openconnection(CONNECTION_KEY)
if response["statusCode"] == 200:
# Get data from database
result = Shifters.objects.get_shifters(
vacated_params, disqualify_params).to_json(indent=0)
shifters = json.loads(result)
if shifters:
logger.info("Get shifters data from database success.")
return_value["statusCode"] = 200
return_value["message"] = "Seccess"
return_value["body"] = shifters
else:
logger.info("Shifters not found in database!")
return_value["statusCode"] = 404
return_value["message"] = "Shifters not found in database!"
return_value["body"] = []
else:
return_value = response
except BaseException as ex:
logger.error("Error retrieving data from MongoDB. %s", repr(ex))
return_value["statusCode"] = 500
return_value["message"] = "Internal server error!"
return_value["body"] = []
return return_value
def get_disqualify_status(disqualify_instances):
""" This function used to perform disqualify filter and return status.
Args:
disqualify_instances (List): list of all filter function and associated params.
Returns:
List: The status of disqualify filter. """
# Initialize qualify shifter
disqualify_status = []
try:
for method, inputs in disqualify_instances.items():
status = FILTER.execute(method, inputs)
logger.debug("QualityFilter %s returned status of: %s", method,
status)
disqualify_status.append(status)
return disqualify_status
except BaseException as exceptions:
message = str(exceptions)
logger.error("Error while getting disqualify status: %s", message)
return None
def position_filter(instance):
""" This function used to filter shift position completed for vacated shift.
Args:
shifter (dict): shifter, vacated shift data.
Returns:
boolean: The return value. """
# Initialize return value.
return_value = "qualified"
try:
completed_position_count = instance["completed_position_count"]
completed_position_range = instance["completed_position_range"]
if completed_position_count == completed_position_range:
logger.info("Disqualified Reason: position_filter")
return_value = "disqualified"
except BaseException as ex:
logger.error(
"Disqualified Reason: EXCEPTION in position_filter: %s",
str(ex))
return_value = "disqualified"
return return_value
def reliability_filter(instance):
""" This function used to check reliability of shifter on the basis of nowshow count.
Args:
shifter (dict): shifter, vacated shift data.
Returns:
boolean: The return value. """
# Initialize return value.
return_value = "qualified"
try:
noshow_count = instance["noshowcount"]
noshow_range = instance["noshow_range"]
if noshow_count >= noshow_range:
logger.info("Disqualified Reason: reliability_filter")
return_value = "disqualified"
except BaseException as ex:
logger.error(
"Disqualified Reason: EXCEPTION in reliability_filter: %s",
str(ex))
return_value = "disqualified"
return return_value
def save_shifter(data):
""" This function used to save shifter data into database.
Args:
data (dict): Shifter data.
Returns:
dict: The return value. """
# Initialize return value
return_value = {"statusCode": None, "body": None}
try:
response = DbConnection.openconnection(CONNECTION_KEY)
if response["statusCode"] == 200:
# Initialize shifter object.
shifter = Shifters(
id=data['id'],
shifterid=data['id'],
existingshifterjpid=data['existingshifterjpid'],
position=data['position'],
location=[float(data['longitude']),
float(data['latitude'])],
rating=data['rating'],
shifteravailability=data['shifteravailability'])
# To save shifter data in database.
shifter.save()
logger.info("Saved data successfully")
return_value["statusCode"] = 200
return_value["body"] = "Success"
else:
return_value = response
except BaseException as exceptions:
message = str(exceptions)
logger.error("Shifter data not saved! Error: %s", message)
return_value["statusCode"] = 500
return_value["body"] = message
return return_value
def duration_difference(instance):
""" This function used to filter shifter shift and vacated shift difference time risk.
Args:
instance (dict): shifter, vacated shift data.
Returns:
boolean: The return value. """
# Initialize return value
return_value = "qualified"
try:
duration_difference_list = instance["duration_difference_list"]
disqualify_params = instance["duration_difference_range"]
for difference in duration_difference_list:
if difference <= disqualify_params:
logger.info("Disqualified Reason: duration_difference")
return_value = "disqualified"
except BaseException as ex:
logger.error(
"Disqualified Reason: EXCEPTION in duration_difference: %s",
str(ex))
return_value = "disqualified"
return return_value
def save_shift(data):
""" This function used to save shift data into database.
Args:
data (dict): Shift data.
Returns:
dict: The return value. """
# Initialize return value
return_value = {"statusCode": None, "body": None}
try:
# Initialize database connection
response = DbConnection.openconnection(CONNECTION_KEY)
if response["statusCode"] == 200:
# Initialize shift object.
shift = Shifts(
id=data['shiftid'],
shiftid=data['shiftid'],
jobproviderid=data['jobproviderid'],
location=[float(data['longitude']),
float(data['latitude'])],
shiftdetail=data["shiftdetail"])
# To save shift data in database.
shift.save()
logger.info("Saved data successfully")
return_value["statusCode"] = 200
return_value["body"] = "Success"
else:
return_value = response
except BaseException as exceptions:
message = str(exceptions)
logger.error("Shift data not saved! Error: %s", message)
return_value["statusCode"] = 500
return_value["body"] = message
return return_value
def recommended_filter(instance):
""" This function used to filter shifter recommended on the basis of recommended count.
Args:
shifter (dict): shifter, vacated shift data.
Returns:
boolean: The return value. """
# Initialize return value.
return_value = "qualified"
try:
recommended_count = instance["recommendedcount"]
invited_count = instance["invitedcount"]
recommended_range = instance["recommended_range"]
invited_range = instance["invited_range"]
if recommended_count >= recommended_range and invited_count == invited_range:
logger.info("Disqualified Reason: recommend_filter")
return_value = "disqualified"
except BaseException as ex:
logger.error(
"Disqualified Reason: EXCEPTION in recommend_filter: %s",
str(ex))
return_value = "disqualified"
return return_value
def flexibility_filter(instance):
""" This function used to check flexibility of shifter on the basis of invited and accepted count.
Args:
instance (dict): shifter, vacated shift data.
Returns:
boolean: The return value. """
# Initialize return value.
return_value = "qualified"
try:
invited_count = instance["invitedcount"]
accepted_count = instance["acceptedcount"]
accepted_range = instance["accepted_range"]
invited_range = instance["invited_range"]
if invited_count >= invited_range and accepted_count == accepted_range:
logger.info("Disqualified Reason: day_overtime_risk")
return_value = "disqualified"
except BaseException as ex:
logger.error(
"Disqualified Reason: EXCEPTION in flexibility_filter: %s",
str(ex))
return_value = "disqualified"
return return_value
def sqs(body):
""" This function used to call dal api and save response into mongo db according
to request params.
Notes: 'This function use helper function to save shift and shifter data
Args:
body (dict): required for call dal api.
Returns:
dict: The return value. """
# initialize return value.
return_value = {"statusCode": None, "body": None}
try:
# Initialize request body to call dal api.
request_body = {"ID": body['Id'], "Type": body['nType']}
# To parse as string and log the request body comming from sqs.
request_body_string = str(body)
logger.debug("Request body from sqs %s", request_body_string)
# To call dal api and store response in result variable.
result = get_api_data(DAL_URL['base_url'], request_body,
DAL_URL["token"])
# To check if dal api call success.
if result["statusCode"] == 200:
logger.info("DAL api called success for type %s", body['nType'])
data = result["body"].json()
if data['data']:
data = data['data'][0]
logger.info("Get data from dal api succeeded")
# To switch according to type.
if body['nType'] == 'shifter':
# Call shifter function to save shifter data.
response = save_shifter(data)
return_value = response
elif body['nType'] == 'shift':
# Call shift function to save shift data.
response = save_shift(data)
return_value = response
else:
logger.error("Response %s %s.", data["status"],
data["message"])
return_value["statusCode"] = data['status']
return_value["body"] = data['message']
else:
logger.error("Error during call dal api!")
return_value = result
except BaseException as exceptions:
message = str(exceptions)
logger.error("Error ! %s", message)
return_value['statusCode'] = 500
return_value['body'] = message
return return_value
def get_shifter_volatile_data(shifters, vacated_params):
""" This function is used to get shifters voatile data from dal api.
Args:
shifters (List): List of filtered shifter data.
Returns:
dict: The return value. """
# Initialize return value.
return_value = {"statusCode": None, "message": None, "body": {}}
try:
# Initialize request body for call dal api type: "qualify".
shifter_ids_list = []
for shifter in shifters:
shifter_ids_list.append(shifter["shifterid"])
shifter_ids = ", ".join(shifter_ids_list)
request_body = {
"ID": shifter_ids,
"Type": "qualify",
"VacatedShiftDate": vacated_params["startTime"]
}
result = get_api_data(DAL_URL['base_url'], request_body,
DAL_URL["token"])
# To check if dal api call success.
if result["statusCode"] == 200:
logger.info("DAL api called successfully for type qualify.")
data = result["body"].json()
# To check data found.
if data["data"]:
logger.info("Shifters volatile data get success.")
return_value["statusCode"] = 200
return_value["message"] = "Success"
return_value["body"] = data["data"]
else:
logger.error("Shifters volatile data not found!")
return_value["statusCode"] = data['status']
return_value["message"] = "Shifters volatile data not found!"
return_value["body"] = []
else:
logger.error("Error calling DAL http response was: %s",
result["statusCode"])
return_value["statusCode"] = result["statusCode"]
return_value["message"] = "Internal server error!"
return_value["body"] = []
except BaseException as exceptions:
message = str(exceptions)
logger.error("Error while gatting shifters volatile data %s", message)
return_value["statusCode"] = 500
return_value["message"] = "Internal server error!"
return_value["body"] = []
return return_value
def get_qualified_shifter(vacated_params, patterns):
""" This function used to get qualified shifter.
Args:
vacated_params (dict): vacated shifter, shift data.
Returns:
dict: The return value. """
# Initialize return value.
return_value = {"statusCode": None, "message": None, "body": None}
# Initialize array to store list of shifter with volatile data.
shifters_data = []
try:
# To get filtered shifter from database.
shifter_from_db = get_shifters_from_db(vacated_params,
patterns["static_data_filter"])
shifter_volatile_data = get_shifter_volatile_data(
shifter_from_db["body"], vacated_params)
shifters_data = get_combined_shifter(shifter_from_db,
shifter_volatile_data)
if shifters_data["statusCode"] == 200:
qualified_shifter = []
instance_builder = DisqualifyInstanceBuilder()
logger.info(
"Getting qualified shifter for shiftId: %s and positionId: %s",
vacated_params["shiftId"], vacated_params["positionId"])
for data in shifters_data["body"]:
logger.info(LOG_HEADER, data["shifterid"])
instances = {}
inputs = {"shifter": data, "vacated_params": vacated_params}
for method, pattern in patterns["volatile_data_filter"].items(
):
instance = instance_builder.execute(
method, inputs, pattern)
if instance and instance != "Invalid":
instances.update(instance)
filter_status = get_disqualify_status(instances)
if "disqualified" not in filter_status:
instances.clear()
filter_status.clear()
qualified_shifter.append(data)
if qualified_shifter:
return_value["statusCode"] = 200
return_value["message"] = "Success"
return_value["body"] = qualified_shifter
logger.info("Shifter is qualified")
else:
return_value["statusCode"] = 404
return_value[
"message"] = "No qualified shifters found for this shift"
return_value["body"] = []
logger.info("Shifter was not qualified for the vacated shift")
else:
return_value = shifters_data
except AttributeError as ex:
return_value["statusCode"] = 500
return_value["message"] = "Internal server error!"
return_value["body"] = []
logger.error("Error %s", repr(ex))
return return_value