cic-stack/apps/cic-ussd/cic_ussd/tasks/callback_handler.py

115 lines
4.5 KiB
Python

# standard imports
import json
import logging
from datetime import timedelta
# third-party imports
import celery
# local imports
from cic_ussd.db.models.base import SessionBase
from cic_ussd.db.models.user import User
from cic_ussd.error import ActionDataNotFoundError
from cic_ussd.redis import InMemoryStore
from cic_ussd.transactions import IncomingTransactionProcessor
logg = logging.getLogger(__file__)
celery_app = celery.current_app
@celery_app.task(bind=True)
def process_account_creation_callback(self, result: str, url: str, status_code: int):
"""This function defines a task that creates a user and
:param result: The blockchain address for the created account
:type result: str
:param url: URL provided to callback task in cic-eth should http be used for callback.
:type url: str
:param status_code: The status of the task to create an account
:type status_code: int
"""
session = SessionBase.create_session()
cache = InMemoryStore.cache
task_id = self.request.root_id
# get account creation status
account_creation_data = cache.get(task_id)
# check status
if account_creation_data:
account_creation_data = json.loads(account_creation_data)
if status_code == 0:
# update redis data
account_creation_data['status'] = 'CREATED'
cache.set(name=task_id, value=json.dumps(account_creation_data))
cache.persist(task_id)
phone_number = account_creation_data.get('phone_number')
# create user
user = User(blockchain_address=result, phone_number=phone_number)
session.add(user)
session.commit()
# expire cache
cache.expire(task_id, timedelta(seconds=30))
session.close()
else:
cache.expire(task_id, timedelta(seconds=30))
session.close()
else:
session.close()
raise ActionDataNotFoundError(f'Account creation task: {task_id}, returned unexpected response: {status_code}')
@celery_app.task
def process_incoming_transfer_callback(result: dict, param: str, status_code: int):
logg.debug(f'PARAM: {param}, RESULT: {result}, STATUS_CODE: {status_code}')
session = SessionBase.create_session()
if result and status_code == 0:
# collect result data
recipient_blockchain_address = result.get('recipient')
sender_blockchain_address = result.get('sender')
token_symbol = result.get('token_symbol')
value = result.get('destination_value')
# try to find users in system
recipient_user = session.query(User).filter_by(blockchain_address=recipient_blockchain_address).first()
sender_user = session.query(User).filter_by(blockchain_address=sender_blockchain_address).first()
# check whether recipient is in the system
if not recipient_user:
session.close()
raise ValueError(
f'Tx for recipient: {recipient_blockchain_address} was received but has no matching user in the system.'
)
# process incoming transactions
incoming_tx_processor = IncomingTransactionProcessor(phone_number=recipient_user.phone_number,
preferred_language=recipient_user.preferred_language,
token_symbol=token_symbol,
value=value)
if param == 'tokengift':
logg.debug('Name information would require integration with cic meta.')
incoming_tx_processor.process_token_gift_incoming_transactions(first_name="")
elif param == 'transfer':
logg.debug('Name information would require integration with cic meta.')
if sender_user:
sender_information = f'{sender_user.phone_number}, {""}, {""}'
incoming_tx_processor.process_transfer_incoming_transaction(sender_information=sender_information)
else:
logg.warning(
f'Tx with sender: {sender_blockchain_address} was received but has no matching user in the system.'
)
incoming_tx_processor.process_transfer_incoming_transaction(
sender_information=sender_blockchain_address)
else:
session.close()
raise ValueError(f'Unexpected transaction param: {param}.')
else:
session.close()
raise ValueError(f'Unexpected status code: {status_code}.')