87 lines
3.2 KiB
Python
87 lines
3.2 KiB
Python
# standard imports
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import json
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import logging
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# external imports
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import celery
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import i18n
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from cic_types.condiments import MetadataPointer
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# local imports
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from cic_ussd.account.metadata import get_cached_preferred_language
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from cic_ussd.account.statement import get_cached_statement
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from cic_ussd.account.transaction import aux_transaction_data, validate_transaction_account
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from cic_ussd.cache import cache_data, cache_data_key
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from cic_ussd.db.models.account import Account
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from cic_ussd.db.models.base import SessionBase
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celery_app = celery.current_app
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logg = logging.getLogger(__file__)
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@celery_app.task(bind=True)
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def generate_statement(self, querying_party: str, transaction: dict):
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""""""
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queue = self.request.delivery_info.get('routing_key')
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s_parse_transaction = celery.signature(
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'cic_ussd.tasks.processor.parse_transaction', [transaction], queue=queue
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)
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s_cache_statement = celery.signature(
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'cic_ussd.tasks.processor.cache_statement', [querying_party], queue=queue
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)
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celery.chain(s_parse_transaction, s_cache_statement).apply_async()
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@celery_app.task
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def cache_statement(parsed_transaction: dict, querying_party: str):
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"""
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:param parsed_transaction:
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:type parsed_transaction:
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:param querying_party:
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:type querying_party:
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:return:
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:rtype:
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"""
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cached_statement = get_cached_statement(querying_party)
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statement_transactions = []
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if cached_statement:
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statement_transactions = json.loads(cached_statement)
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statement_transactions.append(parsed_transaction)
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data = json.dumps(statement_transactions)
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identifier = bytes.fromhex(querying_party)
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key = cache_data_key(identifier, MetadataPointer.STATEMENT)
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cache_data(key, data)
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@celery_app.task
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def parse_transaction(transaction: dict) -> dict:
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"""This function parses transaction objects and collates all relevant data for system use i.e:
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- An account's set preferred language.
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- Account identifier that facilitates notification.
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- Contextual tags i.e action and direction tags.
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:param transaction: Transaction object.
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:type transaction: dict
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:return: Transaction object with contextual data for use in the system.
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:rtype: dict
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"""
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preferred_language = get_cached_preferred_language(transaction.get('blockchain_address'))
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if not preferred_language:
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preferred_language = i18n.config.get('fallback')
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transaction['preferred_language'] = preferred_language
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transaction = aux_transaction_data(preferred_language, transaction)
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session = SessionBase.create_session()
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role = transaction.get('role')
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alt_blockchain_address = transaction.get('alt_blockchain_address')
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blockchain_address = transaction.get('blockchain_address')
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account = validate_transaction_account(blockchain_address, role, session)
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alt_account = session.query(Account).filter_by(blockchain_address=alt_blockchain_address).first()
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if alt_account:
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transaction['alt_metadata_id'] = alt_account.standard_metadata_id()
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else:
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transaction['alt_metadata_id'] = 'GRASSROOTS ECONOMICS'
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transaction['metadata_id'] = account.standard_metadata_id()
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transaction['phone_number'] = account.phone_number
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session.close()
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return transaction
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