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Merge branch 'philip/multi-token-v1' into 'master'

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Philip/multi token v1

See merge request grassrootseconomics/cic-internal-integration!309
This commit is contained in:
Philip Wafula 2021-11-29 15:04:50 +00:00
commit e132e534d3
32 changed files with 1037 additions and 119 deletions
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48
apps/cic-ussd/cic_ussd/account/balance.py
View File

@ -2,7 +2,7 @@
import json
import logging
from typing import Optional
from typing import Union, Optional
# third-party imports
from cic_eth.api import Api
@ -14,7 +14,7 @@ from cic_ussd.account.transaction import from_wei
from cic_ussd.cache import cache_data_key, get_cached_data
from cic_ussd.error import CachedDataNotFoundError
logg = logging.getLogger()
logg = logging.getLogger(__file__)
def get_balances(address: str,
@ -43,7 +43,7 @@ def get_balances(address: str,
:return: A list containing balance data if called synchronously. | None
:rtype: list | None
"""
logg.debug(f'retrieving balance for address: {address}')
logg.debug(f'retrieving {token_symbol} balance for address: {address}')
if asynchronous:
cic_eth_api = Api(
chain_str=chain_str,
@ -60,11 +60,13 @@ def get_balances(address: str,
return balance_request_task.get()
def calculate_available_balance(balances: dict) -> float:
def calculate_available_balance(balances: dict, decimals: int) -> float:
"""This function calculates an account's balance at a specific point in time by computing the difference from the
outgoing balance and the sum of the incoming and network balances.
:param balances: incoming, network and outgoing balances.
:type balances: dict
:param decimals:
:type decimals: int
:return: Token value of the available balance.
:rtype: float
"""
@ -73,7 +75,7 @@ def calculate_available_balance(balances: dict) -> float:
network_balance = balances.get('balance_network')
available_balance = (network_balance + incoming_balance) - outgoing_balance
return from_wei(value=available_balance)
return from_wei(decimals=decimals, value=available_balance)
def get_adjusted_balance(balance: int, chain_str: str, timestamp: int, token_symbol: str):
@ -94,24 +96,25 @@ def get_adjusted_balance(balance: int, chain_str: str, timestamp: int, token_sym
return demurrage_api.get_adjusted_balance(token_symbol, balance, timestamp).result
def get_cached_available_balance(blockchain_address: str) -> float:
def get_cached_available_balance(decimals: int, identifier: Union[list, bytes]) -> float:
"""This function attempts to retrieve balance data from the redis cache.
:param blockchain_address: Ethereum address of an account.
:type blockchain_address: str
:param decimals:
:type decimals: int
:param identifier: An identifier needed to create a unique pointer to a balances resource.
:type identifier: bytes | list
:raises CachedDataNotFoundError: No cached balance data could be found.
:return: Operational balance of an account.
:rtype: float
"""
identifier = bytes.fromhex(blockchain_address)
key = cache_data_key(identifier, salt=MetadataPointer.BALANCES)
key = cache_data_key(identifier=identifier, salt=MetadataPointer.BALANCES)
cached_balances = get_cached_data(key=key)
if cached_balances:
return calculate_available_balance(json.loads(cached_balances))
return calculate_available_balance(balances=json.loads(cached_balances), decimals=decimals)
else:
raise CachedDataNotFoundError(f'No cached available balance for address: {blockchain_address}')
raise CachedDataNotFoundError(f'No cached available balance at {key}')
def get_cached_adjusted_balance(identifier: bytes):
def get_cached_adjusted_balance(identifier: Union[list, bytes]):
"""
:param identifier:
:type identifier:
@ -120,3 +123,22 @@ def get_cached_adjusted_balance(identifier: bytes):
"""
key = cache_data_key(identifier, MetadataPointer.BALANCES_ADJUSTED)
return get_cached_data(key)
def get_account_tokens_balance(blockchain_address: str, chain_str: str, token_symbols_list: list):
"""
:param blockchain_address:
:type blockchain_address:
:param chain_str:
:type chain_str:
:param token_symbols_list:
:type token_symbols_list:
:return:
:rtype:
"""
for token_symbol in token_symbols_list:
get_balances(address=blockchain_address,
chain_str=chain_str,
token_symbol=token_symbol,
asynchronous=True,
callback_param=f'{blockchain_address},{token_symbol}')

3
apps/cic-ussd/cic_ussd/account/statement.py
View File

@ -69,7 +69,8 @@ def parse_statement_transactions(statement: list):
parsed_transactions = []
for transaction in statement:
action_tag = transaction.get('action_tag')
amount = from_wei(transaction.get('token_value'))
decimals = transaction.get('token_decimals')
amount = from_wei(decimals, transaction.get('token_value'))
direction_tag = transaction.get('direction_tag')
token_symbol = transaction.get('token_symbol')
metadata_id = transaction.get('metadata_id')

287
apps/cic-ussd/cic_ussd/account/tokens.py
View File

@ -1,19 +1,115 @@
# standard imports
import hashlib
import json
import logging
from typing import Dict, Optional
from typing import Optional, Union
# external imports
from cic_eth.api import Api
from cic_types.condiments import MetadataPointer
# local imports
from cic_ussd.account.balance import get_cached_available_balance
from cic_ussd.account.chain import Chain
from cic_ussd.cache import cache_data_key, get_cached_data
from cic_ussd.error import SeppukuError
from cic_ussd.cache import cache_data, cache_data_key, get_cached_data
from cic_ussd.error import CachedDataNotFoundError, SeppukuError
from cic_ussd.metadata.tokens import query_token_info, query_token_metadata
from cic_ussd.processor.util import wait_for_cache
from cic_ussd.translation import translation_for
logg = logging.getLogger(__file__)
logg = logging.getLogger(__name__)
def collate_token_metadata(token_info: dict, token_metadata: dict) -> dict:
"""
:param token_info:
:type token_info:
:param token_metadata:
:type token_metadata:
:return:
:rtype:
"""
logg.debug(f'Collating token info: {token_info} and token metadata: {token_metadata}')
description = token_info.get('description')
issuer = token_info.get('issuer')
location = token_metadata.get('location')
contact = token_metadata.get('contact')
return {
'description': description,
'issuer': issuer,
'location': location,
'contact': contact
}
def create_account_tokens_list(blockchain_address: str):
"""
:param blockchain_address:
:type blockchain_address:
:return:
:rtype:
"""
token_symbols_list = get_cached_token_symbol_list(blockchain_address=blockchain_address)
token_list_entries = []
if token_symbols_list:
logg.debug(f'Token symbols: {token_symbols_list} for account: {blockchain_address}')
for token_symbol in token_symbols_list:
entry = {}
logg.debug(f'Processing token data for: {token_symbol}')
key = cache_data_key([bytes.fromhex(blockchain_address), token_symbol.encode('utf-8')], MetadataPointer.TOKEN_DATA)
token_data = get_cached_data(key)
token_data = json.loads(token_data)
logg.debug(f'Retrieved token data: {token_data} for: {token_symbol}')
token_name = token_data.get('name')
entry['name'] = token_name
token_symbol = token_data.get('symbol')
entry['symbol'] = token_symbol
token_issuer = token_data.get('issuer')
entry['issuer'] = token_issuer
token_contact = token_data['contact'].get('phone')
entry['contact'] = token_contact
token_location = token_data.get('location')
entry['location'] = token_location
decimals = token_data.get('decimals')
identifier = [bytes.fromhex(blockchain_address), token_symbol.encode('utf-8')]
wait_for_cache(identifier, f'Cached available balance for token: {token_symbol}', MetadataPointer.BALANCES)
token_balance = get_cached_available_balance(decimals=decimals, identifier=identifier)
entry['balance'] = token_balance
token_list_entries.append(entry)
account_tokens_list = order_account_tokens_list(token_list_entries, bytes.fromhex(blockchain_address))
key = cache_data_key(bytes.fromhex(blockchain_address), MetadataPointer.TOKEN_DATA_LIST)
cache_data(key, json.dumps(account_tokens_list))
def get_active_token_symbol(blockchain_address: str):
"""
:param blockchain_address:
:type blockchain_address:
:return:
:rtype:
"""
identifier = bytes.fromhex(blockchain_address)
key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_ACTIVE)
active_token_symbol = get_cached_data(key)
if not active_token_symbol:
raise CachedDataNotFoundError('No active token set.')
return active_token_symbol
def get_cached_token_data(blockchain_address: str, token_symbol: str):
"""
:param blockchain_address:
:type blockchain_address:
:param token_symbol:
:type token_symbol:
:return:
:rtype:
"""
identifier = [bytes.fromhex(blockchain_address), token_symbol.encode('utf-8')]
key = cache_data_key(identifier, MetadataPointer.TOKEN_DATA)
logg.debug(f'Retrieving token data for: {token_symbol} at: {key}')
token_data = get_cached_data(key)
return json.loads(token_data)
def get_cached_default_token(chain_str: str) -> Optional[str]:
@ -49,6 +145,132 @@ def get_default_token_symbol():
raise SeppukuError(f'Could not retrieve default token for: {chain_str}')
def get_cached_token_symbol_list(blockchain_address: str) -> Optional[list]:
"""
:param blockchain_address:
:type blockchain_address:
:return:
:rtype:
"""
key = cache_data_key(identifier=bytes.fromhex(blockchain_address), salt=MetadataPointer.TOKEN_SYMBOLS_LIST)
token_symbols_list = get_cached_data(key)
if token_symbols_list:
return json.loads(token_symbols_list)
return token_symbols_list
def get_cached_token_data_list(blockchain_address: str) -> Optional[list]:
"""
:param blockchain_address:
:type blockchain_address:
:return:
:rtype:
"""
key = cache_data_key(bytes.fromhex(blockchain_address), MetadataPointer.TOKEN_DATA_LIST)
token_data_list = get_cached_data(key)
if token_data_list:
return json.loads(token_data_list)
return token_data_list
def handle_token_symbol_list(blockchain_address: str, token_symbol: str):
"""
:param blockchain_address:
:type blockchain_address:
:param token_symbol:
:type token_symbol:
:return:
:rtype:
"""
token_symbol_list = get_cached_token_symbol_list(blockchain_address)
if token_symbol_list:
if token_symbol not in token_symbol_list:
token_symbol_list.append(token_symbol)
else:
token_symbol_list = [token_symbol]
identifier = bytes.fromhex(blockchain_address)
key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_SYMBOLS_LIST)
data = json.dumps(token_symbol_list)
cache_data(key, data)
def hashed_token_proof(token_proof: Union[dict, str]) -> str:
"""
:param token_proof:
:type token_proof:
:return:
:rtype:
"""
if isinstance(token_proof, dict):
token_proof = json.dumps(token_proof)
logg.debug(f'Hashing token proof: {token_proof}')
hash_object = hashlib.new("sha256")
hash_object.update(token_proof.encode('utf-8'))
return hash_object.digest().hex()
def order_account_tokens_list(account_tokens_list: list, identifier: bytes) -> list:
"""
:param account_tokens_list:
:type account_tokens_list:
:param identifier:
:type identifier:
:return:
:rtype:
"""
ordered_tokens_list = []
# get last sent token
key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_LAST_SENT)
last_sent_token_symbol = get_cached_data(key)
# get last received token
key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_LAST_RECEIVED)
last_received_token_symbol = get_cached_data(key)
last_sent_token_data, remaining_accounts_token_list = remove_from_account_tokens_list(account_tokens_list, last_sent_token_symbol)
if last_sent_token_data:
ordered_tokens_list.append(last_sent_token_data[0])
last_received_token_data, remaining_accounts_token_list = remove_from_account_tokens_list(remaining_accounts_token_list, last_received_token_symbol)
if last_received_token_data:
ordered_tokens_list.append(last_received_token_data[0])
# order the by balance
ordered_by_balance = sorted(remaining_accounts_token_list, key=lambda d: d['balance'], reverse=True)
return ordered_tokens_list + ordered_by_balance
def parse_token_list(account_token_list: list):
parsed_token_list = []
for i in range(len(account_token_list)):
token_symbol = account_token_list[i].get('symbol')
token_balance = account_token_list[i].get('balance')
token_data_repr = f'{i+1}. {token_symbol} {token_balance}'
parsed_token_list.append(token_data_repr)
return parsed_token_list
def process_token_data(blockchain_address: str, token_symbol: str):
"""
:param blockchain_address:
:type blockchain_address:
:param token_symbol:
:type token_symbol:
:return:
:rtype:
"""
logg.debug(f'Processing token data for token: {token_symbol}')
identifier = token_symbol.encode('utf-8')
query_token_metadata(identifier=identifier)
token_info = query_token_info(identifier=identifier)
hashed_token_info = hashed_token_proof(token_proof=token_info)
query_token_data(blockchain_address=blockchain_address,
hashed_proofs=[hashed_token_info],
token_symbols=[token_symbol])
def query_default_token(chain_str: str):
"""This function synchronously queries cic-eth for the deployed system's default token.
:param chain_str: Chain name and network id.
@ -60,3 +282,60 @@ def query_default_token(chain_str: str):
cic_eth_api = Api(chain_str=chain_str)
default_token_request_task = cic_eth_api.default_token()
return default_token_request_task.get()
def query_token_data(blockchain_address: str, hashed_proofs: list, token_symbols: list):
""""""
logg.debug(f'Retrieving token metadata for tokens: {", ".join(token_symbols)}')
api = Api(callback_param=blockchain_address,
callback_queue='cic-ussd',
chain_str=Chain.spec.__str__(),
callback_task='cic_ussd.tasks.callback_handler.token_data_callback')
api.tokens(token_symbols=token_symbols, proof=hashed_proofs)
def remove_from_account_tokens_list(account_tokens_list: list, token_symbol: str):
"""
:param account_tokens_list:
:type account_tokens_list:
:param token_symbol:
:type token_symbol:
:return:
:rtype:
"""
removed_token_data = []
for i in range(len(account_tokens_list)):
if account_tokens_list[i]['symbol'] == token_symbol:
removed_token_data.append(account_tokens_list[i])
del account_tokens_list[i]
break
return removed_token_data, account_tokens_list
def set_active_token(blockchain_address: str, token_symbol: str):
"""
:param blockchain_address:
:type blockchain_address:
:param token_symbol:
:type token_symbol:
:return:
:rtype:
"""
logg.info(f'Active token set to: {token_symbol}')
key = cache_data_key(identifier=bytes.fromhex(blockchain_address), salt=MetadataPointer.TOKEN_ACTIVE)
cache_data(key=key, data=token_symbol)
def token_list_set(preferred_language: str, token_data_reprs: list):
"""
:param preferred_language:
:type preferred_language:
:param token_data_reprs:
:type token_data_reprs:
:return:
:rtype:
"""
if not token_data_reprs:
return translation_for('helpers.no_tokens_list', preferred_language)
return ''.join(f'{token_data_repr}\n' for token_data_repr in token_data_reprs)

38
apps/cic-ussd/cic_ussd/account/transaction.py
View File

@ -1,7 +1,6 @@
# standard import
import decimal
import json
import logging
from math import trunc
from typing import Dict, Tuple
# external import
@ -9,8 +8,6 @@ from cic_eth.api import Api
from sqlalchemy.orm.session import Session
# local import
from cic_ussd.account.chain import Chain
from cic_ussd.account.tokens import get_cached_default_token
from cic_ussd.db.models.account import Account
from cic_ussd.db.models.base import SessionBase
from cic_ussd.error import UnknownUssdRecipient
@ -55,32 +52,32 @@ def aux_transaction_data(preferred_language: str, transaction: dict) -> dict:
return transaction
def from_wei(value: int) -> float:
def from_wei(decimals: int, value: int) -> float:
"""This function converts values in Wei to a token in the cic network.
:param decimals: The decimals required for wei values.
:type decimals: int
:param value: Value in Wei
:type value: int
:return: SRF equivalent of value in Wei
:rtype: float
"""
cached_token_data = json.loads(get_cached_default_token(Chain.spec.__str__()))
token_decimals: int = cached_token_data.get('decimals')
value = float(value) / (10**token_decimals)
value = float(value) / (10**decimals)
return truncate(value=value, decimals=2)
def to_wei(value: int) -> int:
def to_wei(decimals: int, value: int) -> int:
"""This functions converts values from a token in the cic network to Wei.
:param decimals: The decimals required for wei values.
:type decimals: int
:param value: Value in SRF
:type value: int
:return: Wei equivalent of value in SRF
:rtype: int
"""
cached_token_data = json.loads(get_cached_default_token(Chain.spec.__str__()))
token_decimals: int = cached_token_data.get('decimals')
return int(value * (10**token_decimals))
return int(value * (10**decimals))
def truncate(value: float, decimals: int):
def truncate(value: float, decimals: int) -> float:
"""This function truncates a value to a specified number of decimals places.
:param value: The value to be truncated.
:type value: float
@ -89,9 +86,8 @@ def truncate(value: float, decimals: int):
:return: The truncated value.
:rtype: int
"""
decimal.getcontext().rounding = decimal.ROUND_DOWN
contextualized_value = decimal.Decimal(value)
return round(contextualized_value, decimals)
stepper = 10.0**decimals
return trunc(stepper*value) / stepper
def transaction_actors(transaction: dict) -> Tuple[Dict, Dict]:
@ -104,14 +100,17 @@ def transaction_actors(transaction: dict) -> Tuple[Dict, Dict]:
"""
destination_token_symbol = transaction.get('destination_token_symbol')
destination_token_value = transaction.get('destination_token_value') or transaction.get('to_value')
destination_token_decimals = transaction.get('destination_token_decimals')
recipient_blockchain_address = transaction.get('recipient')
sender_blockchain_address = transaction.get('sender')
source_token_symbol = transaction.get('source_token_symbol')
source_token_value = transaction.get('source_token_value') or transaction.get('from_value')
source_token_decimals = transaction.get('source_token_decimals')
recipient_transaction_data = {
"token_symbol": destination_token_symbol,
"token_value": destination_token_value,
"token_decimals": destination_token_decimals,
"blockchain_address": recipient_blockchain_address,
"role": "recipient",
}
@ -119,6 +118,7 @@ def transaction_actors(transaction: dict) -> Tuple[Dict, Dict]:
"blockchain_address": sender_blockchain_address,
"token_symbol": source_token_symbol,
"token_value": source_token_value,
"token_decimals": source_token_decimals,
"role": "sender",
}
return recipient_transaction_data, sender_transaction_data
@ -166,14 +166,16 @@ class OutgoingTransaction:
self.from_address = from_address
self.to_address = to_address
def transfer(self, amount: int, token_symbol: str):
def transfer(self, amount: int, decimals: int, token_symbol: str):
"""This function initiates standard transfers between one account to another
:param amount: The amount of tokens to be sent
:type amount: int
:param decimals: The decimals for the token being transferred.
:type decimals: int
:param token_symbol: ERC20 token symbol of token to send
:type token_symbol: str
"""
self.cic_eth_api.transfer(from_address=self.from_address,
to_address=self.to_address,
value=to_wei(value=amount),
value=to_wei(decimals=decimals, value=amount),
token_symbol=token_symbol)

9
apps/cic-ussd/cic_ussd/cache.py
View File

@ -1,12 +1,13 @@
# standard imports
import hashlib
import logging
from typing import Union
# external imports
from cic_types.condiments import MetadataPointer
from redis import Redis
logg = logging.getLogger()
logg = logging.getLogger(__file__)
class Cache:
@ -39,7 +40,7 @@ def get_cached_data(key: str):
return cache.get(name=key)
def cache_data_key(identifier: bytes, salt: MetadataPointer):
def cache_data_key(identifier: Union[list, bytes], salt: MetadataPointer):
"""
:param identifier:
:type identifier:
@ -49,6 +50,10 @@ def cache_data_key(identifier: bytes, salt: MetadataPointer):
:rtype:
"""
hash_object = hashlib.new("sha256")
if isinstance(identifier, list):
for identity in identifier:
hash_object.update(identity)
else:
hash_object.update(identifier)
hash_object.update(salt.value.encode(encoding="utf-8"))
return hash_object.digest().hex()

31
apps/cic-ussd/cic_ussd/db/ussd_menu.json
View File

@ -287,7 +287,36 @@
"display_key": "ussd.kenya.dob_edit_pin_authorization",
"name": "dob_edit_pin_authorization",
"parent": "metadata_management"
},
"49": {
"description": "Menu to display first set of tokens in the account's token list.",
"display_key": "ussd.kenya.first_account_tokens_set",
"name": "first_account_tokens_set",
"parent": null
},
"50": {
"description": "Menu to display middle set of tokens in the account's token list.",
"display_key": "ussd.kenya.middle_account_tokens_set",
"name": "middle_account_tokens_set",
"parent": null
},
"51": {
"description": "Menu to display last set of tokens in the account's token list.",
"display_key": "ussd.kenya.last_account_tokens_set",
"name": "last_account_tokens_set",
"parent": null
},
"52": {
"description": "Pin entry menu for setting an active token.",
"display_key": "ussd.kenya.token_selection_pin_authorization",
"name": "token_selection_pin_authorization",
"parent": null
},
"53": {
"description": "Exit following a successful active token setting.",
"display_key": "ussd.kenya.exit_successful_token_selection",
"name": "exit_successful_token_selection",
"parent": null
}
}
}

2
apps/cic-ussd/cic_ussd/metadata/base.py
View File

@ -13,7 +13,7 @@ logg = logging.getLogger(__file__)
class UssdMetadataHandler(MetadataRequestsHandler):
def __init__(self, cic_type: MetadataPointer, identifier: bytes):
def __init__(self, identifier: bytes, cic_type: MetadataPointer = None):
super().__init__(cic_type, identifier)
def cache_metadata(self, data: str):

54
apps/cic-ussd/cic_ussd/metadata/tokens.py Normal file
View File

@ -0,0 +1,54 @@
# standard imports
from typing import Dict, Optional
# external imports
import json
from cic_types.condiments import MetadataPointer
# local imports
from .base import UssdMetadataHandler
from cic_ussd.cache import cache_data
from cic_ussd.error import MetadataNotFoundError
class TokenMetadata(UssdMetadataHandler):
def __init__(self, identifier: bytes, **kwargs):
super(TokenMetadata, self).__init__(identifier=identifier, **kwargs)
def token_metadata_handler(metadata_client: TokenMetadata) -> Optional[Dict]:
"""
:param metadata_client:
:type metadata_client:
:return:
:rtype:
"""
result = metadata_client.query()
token_metadata = result.json()
if not token_metadata:
raise MetadataNotFoundError(f'No metadata found at: {metadata_client.metadata_pointer} for: {metadata_client.identifier.decode("utf-8")}')
cache_data(metadata_client.metadata_pointer, json.dumps(token_metadata))
return token_metadata
def query_token_metadata(identifier: bytes):
"""
:param identifier:
:type identifier:
:return:
:rtype:
"""
token_metadata_client = TokenMetadata(identifier=identifier, cic_type=MetadataPointer.TOKEN_META_SYMBOL)
return token_metadata_handler(token_metadata_client)
def query_token_info(identifier: bytes):
"""
:param identifier:
:type identifier:
:return:
:rtype:
"""
token_info_client = TokenMetadata(identifier=identifier, cic_type=MetadataPointer.TOKEN_PROOF_SYMBOL)
return token_metadata_handler(token_info_client)

144
apps/cic-ussd/cic_ussd/processor/menu.py
View File

@ -9,6 +9,7 @@ from cic_types.condiments import MetadataPointer
# local imports
from cic_ussd.account.balance import (calculate_available_balance,
get_account_tokens_balance,
get_adjusted_balance,
get_balances,
get_cached_adjusted_balance,
@ -21,13 +22,20 @@ from cic_ussd.account.statement import (
query_statement,
statement_transaction_set
)
from cic_ussd.account.tokens import get_default_token_symbol
from cic_ussd.account.tokens import (create_account_tokens_list,
get_active_token_symbol,
get_cached_token_data,
get_cached_token_symbol_list,
get_cached_token_data_list,
parse_token_list,
token_list_set)
from cic_ussd.account.transaction import from_wei, to_wei
from cic_ussd.cache import cache_data_key, cache_data
from cic_ussd.db.models.account import Account
from cic_ussd.metadata import PersonMetadata
from cic_ussd.phone_number import Support
from cic_ussd.processor.util import parse_person_metadata
from cic_ussd.session.ussd_session import save_session_data
from cic_ussd.translation import translation_for
from sqlalchemy.orm.session import Session
@ -48,22 +56,27 @@ class MenuProcessor:
:return:
:rtype:
"""
available_balance = get_cached_available_balance(self.account.blockchain_address)
adjusted_balance = get_cached_adjusted_balance(self.identifier)
token_symbol = get_default_token_symbol()
token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
with_available_balance = f'{self.display_key}.available_balance'
with_fees = f'{self.display_key}.with_fees'
decimals = token_data.get('decimals')
available_balance = get_cached_available_balance(decimals, [self.identifier, token_symbol.encode('utf-8')])
if not adjusted_balance:
return translation_for(key=with_available_balance,
preferred_language=preferred_language,
available_balance=available_balance,
token_symbol=token_symbol)
adjusted_balance = json.loads(adjusted_balance)
tax_wei = to_wei(int(available_balance)) - int(adjusted_balance)
tax = from_wei(int(tax_wei))
tax_wei = to_wei(decimals, int(available_balance)) - int(adjusted_balance)
tax = from_wei(decimals, int(tax_wei))
return translation_for(key=with_fees,
preferred_language=preferred_language,
available_balance=available_balance,
@ -76,21 +89,25 @@ class MenuProcessor:
:rtype:
"""
cached_statement = get_cached_statement(self.account.blockchain_address)
transaction_sets = []
if cached_statement:
statement = json.loads(cached_statement)
statement_transactions = parse_statement_transactions(statement)
transaction_sets = [statement_transactions[tx:tx + 3] for tx in range(0, len(statement_transactions), 3)]
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
first_transaction_set = []
middle_transaction_set = []
last_transaction_set = []
no_transaction_history = statement_transaction_set(preferred_language, transaction_sets)
first_transaction_set = no_transaction_history
middle_transaction_set = no_transaction_history
last_transaction_set = no_transaction_history
if transaction_sets:
first_transaction_set = statement_transaction_set(preferred_language, transaction_sets[0])
if len(transaction_sets) >= 2:
middle_transaction_set = statement_transaction_set(preferred_language, transaction_sets[1])
if len(transaction_sets) >= 3:
last_transaction_set = statement_transaction_set(preferred_language, transaction_sets[2])
if self.display_key == 'ussd.kenya.first_transaction_set':
return translation_for(
self.display_key, preferred_language, first_transaction_set=first_transaction_set
@ -104,7 +121,42 @@ class MenuProcessor:
self.display_key, preferred_language, last_transaction_set=last_transaction_set
)
def help(self):
def account_tokens(self) -> str:
cached_token_data_list = get_cached_token_data_list(self.account.blockchain_address)
token_data_list = parse_token_list(cached_token_data_list)
token_list_sets = [token_data_list[tds:tds + 3] for tds in range(0, len(token_data_list), 3)]
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
no_token_list = token_list_set(preferred_language, [])
first_account_tokens_set = no_token_list
middle_account_tokens_set = no_token_list
last_account_tokens_set = no_token_list
if token_list_sets:
data = {
'account_tokens_list': cached_token_data_list
}
save_session_data(data=data, queue='cic-ussd', session=self.session, ussd_session=self.ussd_session)
first_account_tokens_set = token_list_set(preferred_language, token_list_sets[0])
if len(token_list_sets) >= 2:
middle_account_tokens_set = token_list_set(preferred_language, token_list_sets[1])
if len(token_list_sets) >= 3:
last_account_tokens_set = token_list_set(preferred_language, token_list_sets[2])
if self.display_key == 'ussd.kenya.first_account_tokens_set':
return translation_for(
self.display_key, preferred_language, first_account_tokens_set=first_account_tokens_set
)
if self.display_key == 'ussd.kenya.middle_account_tokens_set':
return translation_for(
self.display_key, preferred_language, middle_account_tokens_set=middle_account_tokens_set
)
if self.display_key == 'ussd.kenya.last_account_tokens_set':
return translation_for(
self.display_key, preferred_language, last_account_tokens_set=last_account_tokens_set
)
def help(self) -> str:
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
@ -161,24 +213,28 @@ class MenuProcessor:
:rtype:
"""
chain_str = Chain.spec.__str__()
token_symbol = get_default_token_symbol()
token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
decimals = token_data.get('decimals')
blockchain_address = self.account.blockchain_address
balances = get_balances(blockchain_address, chain_str, token_symbol, False)[0]
key = cache_data_key(self.identifier, MetadataPointer.BALANCES)
key = cache_data_key([self.identifier, token_symbol.encode('utf-8')], MetadataPointer.BALANCES)
cache_data(key, json.dumps(balances))
available_balance = calculate_available_balance(balances)
available_balance = calculate_available_balance(balances, decimals)
now = datetime.now()
if (now - self.account.created).days >= 30:
if available_balance <= 0:
logg.info(f'Not retrieving adjusted balance, available balance: {available_balance} is insufficient.')
else:
timestamp = int((now - timedelta(30)).timestamp())
adjusted_balance = get_adjusted_balance(to_wei(int(available_balance)), chain_str, timestamp, token_symbol)
key = cache_data_key(self.identifier, MetadataPointer.BALANCES_ADJUSTED)
adjusted_balance = get_adjusted_balance(to_wei(decimals, int(available_balance)), chain_str, timestamp, token_symbol)
key = cache_data_key([self.identifier, token_symbol.encode('utf-8')], MetadataPointer.BALANCES_ADJUSTED)
cache_data(key, json.dumps(adjusted_balance))
query_statement(blockchain_address)
token_symbols_list = get_cached_token_symbol_list(blockchain_address)
get_account_tokens_balance(blockchain_address, chain_str, token_symbols_list)
create_account_tokens_list(blockchain_address)
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
@ -186,6 +242,20 @@ class MenuProcessor:
self.display_key, preferred_language, account_balance=available_balance, account_token_name=token_symbol
)
def token_selection_pin_authorization(self) -> str:
"""
:return:
:rtype:
"""
selected_token = self.ussd_session.get('data').get('selected_token')
token_name = selected_token.get('name')
token_symbol = selected_token.get('symbol')
token_issuer = selected_token.get('issuer')
token_contact = selected_token.get('contact')
token_location = selected_token.get('location')
token_data = f'{token_name} ({token_symbol})\n{token_issuer}\n{token_contact}\n{token_location}\n'
return self.pin_authorization(token_data=token_data)
def transaction_pin_authorization(self) -> str:
"""
:return:
@ -195,12 +265,14 @@ class MenuProcessor:
recipient = Account.get_by_phone_number(recipient_phone_number, self.session)
tx_recipient_information = recipient.standard_metadata_id()
tx_sender_information = self.account.standard_metadata_id()
token_symbol = get_default_token_symbol()
token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
user_input = self.ussd_session.get('data').get('transaction_amount')
transaction_amount = to_wei(value=int(user_input))
decimals = token_data.get('decimals')
transaction_amount = to_wei(decimals=decimals, value=int(user_input))
return self.pin_authorization(
recipient_information=tx_recipient_information,
transaction_amount=from_wei(transaction_amount),
transaction_amount=from_wei(decimals, transaction_amount),
token_symbol=token_symbol,
sender_information=tx_sender_information
)
@ -210,21 +282,23 @@ class MenuProcessor:
:return:
:rtype:
"""
available_balance = get_cached_available_balance(self.account.blockchain_address)
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
session_data = self.ussd_session.get('data')
token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
decimals = token_data.get('decimals')
available_balance = get_cached_available_balance(decimals, [self.identifier, token_symbol.encode('utf-8')])
transaction_amount = session_data.get('transaction_amount')
transaction_amount = to_wei(value=int(transaction_amount))
token_symbol = get_default_token_symbol()
transaction_amount = to_wei(decimals=decimals, value=int(transaction_amount))
recipient_phone_number = self.ussd_session.get('data').get('recipient_phone_number')
recipient = Account.get_by_phone_number(recipient_phone_number, self.session)
tx_recipient_information = recipient.standard_metadata_id()
return translation_for(
self.display_key,
preferred_language,
amount=from_wei(transaction_amount),
amount=from_wei(decimals, transaction_amount),
token_symbol=token_symbol,
recipient_information=tx_recipient_information,
token_balance=available_balance
@ -242,6 +316,14 @@ class MenuProcessor:
preferred_language = i18n.config.get('fallback')
return translation_for('ussd.kenya.exit_pin_blocked', preferred_language, support_phone=Support.phone_number)
def exit_successful_token_selection(self) -> str:
selected_token = self.ussd_session.get('data').get('selected_token')
token_symbol = selected_token.get('symbol')
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
return translation_for(self.display_key,preferred_language,token_symbol=token_symbol)
def exit_successful_transaction(self):
"""
:return:
@ -251,8 +333,10 @@ class MenuProcessor:
preferred_language = get_cached_preferred_language(self.account.blockchain_address)
if not preferred_language:
preferred_language = i18n.config.get('fallback')
transaction_amount = to_wei(amount)
token_symbol = get_default_token_symbol()
token_symbol = get_active_token_symbol(self.account.blockchain_address)
token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
decimals = token_data.get('decimals')
transaction_amount = to_wei(decimals, amount)
recipient_phone_number = self.ussd_session.get('data').get('recipient_phone_number')
recipient = Account.get_by_phone_number(phone_number=recipient_phone_number, session=self.session)
tx_recipient_information = recipient.standard_metadata_id()
@ -260,7 +344,7 @@ class MenuProcessor:
return translation_for(
self.display_key,
preferred_language,
transaction_amount=from_wei(transaction_amount),
transaction_amount=from_wei(decimals, transaction_amount),
token_symbol=token_symbol,
recipient_information=tx_recipient_information,
sender_information=tx_sender_information
@ -294,6 +378,10 @@ def response(account: Account, display_key: str, menu_name: str, session: Sessio
if menu_name == 'transaction_pin_authorization':
return menu_processor.transaction_pin_authorization()
if menu_name == 'token_selection_pin_authorization':
logg.debug(f'RESPONSE IS: {menu_processor.token_selection_pin_authorization()}')
return menu_processor.token_selection_pin_authorization()
if menu_name == 'exit_insufficient_balance':
return menu_processor.exit_insufficient_balance()
@ -312,6 +400,9 @@ def response(account: Account, display_key: str, menu_name: str, session: Sessio
if 'transaction_set' in menu_name:
return menu_processor.account_statement()
if 'account_tokens_set' in menu_name:
return menu_processor.account_tokens()
if menu_name == 'display_user_metadata':
return menu_processor.person_metadata()
@ -321,6 +412,9 @@ def response(account: Account, display_key: str, menu_name: str, session: Sessio
if menu_name == 'exit_pin_blocked':
return menu_processor.exit_pin_blocked()
if menu_name == 'exit_successful_token_selection':
return menu_processor.exit_successful_token_selection()
preferred_language = get_cached_preferred_language(account.blockchain_address)
return translation_for(display_key, preferred_language)

70
apps/cic-ussd/cic_ussd/processor/util.py
View File

@ -1,15 +1,22 @@
# standard imports
import datetime
import json
import logging
import time
from typing import Union
# external imports
from cic_types.condiments import MetadataPointer
from cic_types.models.person import get_contact_data_from_vcard
from tinydb.table import Document
# local imports
from cic_ussd.cache import cache_data_key, get_cached_data
from cic_ussd.menu.ussd_menu import UssdMenu
from cic_ussd.translation import translation_for
logg = logging.getLogger(__file__)
def latest_input(user_input: str) -> str:
"""
@ -76,3 +83,66 @@ def resume_last_ussd_session(last_state: str) -> Document:
if last_state in non_reusable_states:
return UssdMenu.find_by_name('start')
return UssdMenu.find_by_name(last_state)
def wait_for_cache(identifier: Union[list, bytes], resource_name: str, salt: MetadataPointer, interval: int = 1, max_retry: int = 5):
"""
:param identifier:
:type identifier:
:param interval:
:type interval:
:param resource_name:
:type resource_name:
:param salt:
:type salt:
:param max_retry:
:type max_retry:
:return:
:rtype:
"""
key = cache_data_key(identifier=identifier, salt=salt)
resource = get_cached_data(key)
counter = 0
while resource is None:
logg.debug(f'Waiting for: {resource_name} at: {key}. Checking after: {interval} ...')
time.sleep(interval)
counter += 1
resource = get_cached_data(key)
if resource is not None:
logg.debug(f'{resource_name} now available.')
break
else:
if counter == max_retry:
logg.debug(f'Could not find: {resource_name} within: {max_retry}')
break
def wait_for_session_data(resource_name: str, session_data_key: str, ussd_session: dict, interval: int = 1, max_retry: int = 5):
"""
:param interval:
:type interval:
:param resource_name:
:type resource_name:
:param session_data_key:
:type session_data_key:
:param ussd_session:
:type ussd_session:
:param max_retry:
:type max_retry:
:return:
:rtype:
"""
session_data = ussd_session.get('data').get(session_data_key)
counter = 0
while session_data is None:
logg.debug(f'Waiting for: {resource_name}. Checking after: {interval} ...')
time.sleep(interval)
counter += 1
session_data = ussd_session.get('data').get(session_data_key)
if session_data is not None:
logg.debug(f'{resource_name} now available.')
break
else:
if counter == max_retry:
logg.debug(f'Could not find: {resource_name} within: {max_retry}')
break

3
apps/cic-ussd/cic_ussd/runnable/client.py
View File

@ -63,7 +63,6 @@ elif ssl == 0:
else:
ssl = True
valid_service_codes = config.get('USSD_SERVICE_CODE').split(",")
def main():
# TODO: improve url building
@ -79,7 +78,7 @@ def main():
session = uuid.uuid4().hex
data = {
'sessionId': session,
'serviceCode': valid_service_codes[0],
'serviceCode': config.get('USSD_SERVICE_CODE'),
'phoneNumber': args.phone,
'text': "",
}

9
apps/cic-ussd/cic_ussd/session/ussd_session.py
View File

@ -13,7 +13,7 @@ from cic_ussd.cache import Cache
from cic_ussd.db.models.base import SessionBase
from cic_ussd.db.models.ussd_session import UssdSession as DbUssdSession
logg = logging.getLogger()
logg = logging.getLogger(__file__)
class UssdSession:
@ -239,11 +239,16 @@ def save_session_data(queue: Optional[str], session: Session, data: dict, ussd_s
:param ussd_session: A ussd session passed to the state machine.
:type ussd_session: UssdSession
"""
logg.debug(f'Saving: {data} session data to: {ussd_session}')
cache = Cache.store
external_session_id = ussd_session.get('external_session_id')
existing_session_data = ussd_session.get('data')
if existing_session_data:
data = {**existing_session_data, **data}
# replace session data entry
keys = data.keys()
for key in keys:
existing_session_data[key] = data[key]
data = existing_session_data
in_redis_ussd_session = cache.get(external_session_id)
in_redis_ussd_session = json.loads(in_redis_ussd_session)
create_or_update_session(

24
apps/cic-ussd/cic_ussd/state_machine/logic/menu.py
View File

@ -93,6 +93,30 @@ def menu_zero_zero_selected(state_machine_data: Tuple[str, dict, Account, Sessio
return user_input == '00'
def menu_eleven_selected(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
"""
This function checks that user input matches a string with value '11'
:param state_machine_data: A tuple containing user input, a ussd session and user object.
:type state_machine_data: tuple
:return: A user input's match with '99'
:rtype: bool
"""
user_input, ussd_session, account, session = state_machine_data
return user_input == '11'
def menu_twenty_two_selected(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
"""
This function checks that user input matches a string with value '22'
:param state_machine_data: A tuple containing user input, a ussd session and user object.
:type state_machine_data: tuple
:return: A user input's match with '99'
:rtype: bool
"""
user_input, ussd_session, account, session = state_machine_data
return user_input == '22'
def menu_ninety_nine_selected(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
"""
This function checks that user input matches a string with value '99'

23
apps/cic-ussd/cic_ussd/state_machine/logic/pin.py
View File

@ -3,7 +3,6 @@ user's pin.
"""
# standard imports
import json
import logging
import re
from typing import Tuple
@ -16,6 +15,7 @@ from cic_ussd.db.models.account import Account
from cic_ussd.db.models.base import SessionBase
from cic_ussd.db.enum import AccountStatus
from cic_ussd.encoder import create_password_hash, check_password_hash
from cic_ussd.processor.util import wait_for_session_data
from cic_ussd.session.ussd_session import create_or_update_session, persist_ussd_session
@ -31,11 +31,8 @@ def is_valid_pin(state_machine_data: Tuple[str, dict, Account, Session]) -> bool
:rtype: bool
"""
user_input, ussd_session, account, session = state_machine_data
pin_is_valid = False
matcher = r'^\d{4}$'
if re.match(matcher, user_input):
pin_is_valid = True
return pin_is_valid
return bool(re.match(matcher, user_input))
def is_authorized_pin(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
@ -68,7 +65,7 @@ def save_initial_pin_to_session_data(state_machine_data: Tuple[str, dict, Accoun
:param state_machine_data: A tuple containing user input, a ussd session and user object.
:type state_machine_data: tuple
"""
user_input, ussd_session, user, session = state_machine_data
user_input, ussd_session, account, session = state_machine_data
initial_pin = create_password_hash(user_input)
if ussd_session.get('data'):
data = ussd_session.get('data')
@ -97,7 +94,8 @@ def pins_match(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
:return: A match between two pin values.
:rtype: bool
"""
user_input, ussd_session, user, session = state_machine_data
user_input, ussd_session, account, session = state_machine_data
wait_for_session_data('Initial pin', session_data_key='initial_pin', ussd_session=ussd_session)
initial_pin = ussd_session.get('data').get('initial_pin')
return check_password_hash(user_input, initial_pin)
@ -107,11 +105,12 @@ def complete_pin_change(state_machine_data: Tuple[str, dict, Account, Session]):
:param state_machine_data: A tuple containing user input, a ussd session and user object.
:type state_machine_data: tuple
"""
user_input, ussd_session, user, session = state_machine_data
user_input, ussd_session, account, session = state_machine_data
session = SessionBase.bind_session(session=session)
wait_for_session_data('Initial pin', session_data_key='initial_pin', ussd_session=ussd_session)
password_hash = ussd_session.get('data').get('initial_pin')
user.password_hash = password_hash
session.add(user)
account.password_hash = password_hash
session.add(account)
session.flush()
SessionBase.release_session(session=session)
@ -134,6 +133,6 @@ def is_valid_new_pin(state_machine_data: Tuple[str, dict, Account, Session]) ->
:return: A match between two pin values.
:rtype: bool
"""
user_input, ussd_session, user, session = state_machine_data
is_old_pin = user.verify_password(password=user_input)
user_input, ussd_session, account, session = state_machine_data
is_old_pin = account.verify_password(password=user_input)
return is_valid_pin(state_machine_data=state_machine_data) and not is_old_pin

4
apps/cic-ussd/cic_ussd/state_machine/logic/sms.py
View File

@ -6,7 +6,7 @@ from sqlalchemy.orm.session import Session
# local imports
from cic_ussd.account.metadata import get_cached_preferred_language
from cic_ussd.account.tokens import get_default_token_symbol
from cic_ussd.account.tokens import get_active_token_symbol
from cic_ussd.db.models.account import Account
from cic_ussd.notifications import Notifier
from cic_ussd.phone_number import Support
@ -18,7 +18,7 @@ def upsell_unregistered_recipient(state_machine_data: Tuple[str, dict, Account,
notifier = Notifier()
phone_number = ussd_session.get('data')['recipient_phone_number']
preferred_language = get_cached_preferred_language(account.blockchain_address)
token_symbol = get_default_token_symbol()
token_symbol = get_active_token_symbol(account.blockchain_address)
tx_sender_information = account.standard_metadata_id()
notifier.send_sms_notification('sms.upsell_unregistered_recipient',
phone_number,

69
apps/cic-ussd/cic_ussd/state_machine/logic/tokens.py Normal file
View File

@ -0,0 +1,69 @@
# standard imports
from typing import Tuple
# external imports
from sqlalchemy.orm.session import Session
# local imports
from cic_ussd.account.tokens import set_active_token
from cic_ussd.db.models.account import Account
from cic_ussd.processor.util import wait_for_session_data
from cic_ussd.session.ussd_session import save_session_data
def is_valid_token_selection(state_machine_data: Tuple[str, dict, Account, Session]):
"""
:param state_machine_data:
:type state_machine_data:
:return:
:rtype:
"""
user_input, ussd_session, account, session = state_machine_data
session_data = ussd_session.get('data')
account_tokens_list = session_data.get('account_tokens_list')
if not account_tokens_list:
wait_for_session_data('Account token list', session_data_key='account_tokens_list', ussd_session=ussd_session)
if user_input not in ['00', '22']:
try:
user_input = int(user_input)
return user_input <= len(account_tokens_list)
except ValueError:
user_input = user_input.upper()
return any(token_data['symbol'] == user_input for token_data in account_tokens_list)
def process_token_selection(state_machine_data: Tuple[str, dict, Account, Session]):
"""
:param state_machine_data:
:type state_machine_data:
:return:
:rtype:
"""
user_input, ussd_session, account, session = state_machine_data
account_tokens_list = ussd_session.get('data').get('account_tokens_list')
try:
user_input = int(user_input)
selected_token = account_tokens_list[user_input-1]
except ValueError:
user_input = user_input.upper()
selected_token = next(token_data for token_data in account_tokens_list if token_data['symbol'] == user_input)
data = {
'selected_token': selected_token
}
save_session_data(queue='cic-ussd', session=session, data=data, ussd_session=ussd_session)
def set_selected_active_token(state_machine_data: Tuple[str, dict, Account, Session]):
"""
:param state_machine_data:
:type state_machine_data:
:return:
:rtype:
"""
user_input, ussd_session, account, session = state_machine_data
wait_for_session_data(resource_name='Selected token', session_data_key='selected_token', ussd_session=ussd_session)
selected_token = ussd_session.get('data').get('selected_token')
token_symbol = selected_token.get('symbol')
set_active_token(blockchain_address=account.blockchain_address, token_symbol=token_symbol)

20
apps/cic-ussd/cic_ussd/state_machine/logic/transaction.py
View File

@ -5,18 +5,17 @@ from typing import Tuple
# third party imports
import celery
from phonenumbers.phonenumberutil import NumberParseException
from sqlalchemy.orm.session import Session
# local imports
from cic_ussd.account.balance import get_cached_available_balance
from cic_ussd.account.chain import Chain
from cic_ussd.account.tokens import get_default_token_symbol
from cic_ussd.account.tokens import get_active_token_symbol, get_cached_token_data
from cic_ussd.account.transaction import OutgoingTransaction
from cic_ussd.db.enum import AccountStatus
from cic_ussd.db.models.account import Account
from cic_ussd.db.models.base import SessionBase
from cic_ussd.phone_number import process_phone_number, E164Format
from cic_ussd.session.ussd_session import save_session_data
from sqlalchemy.orm.session import Session
logg = logging.getLogger(__file__)
@ -63,7 +62,11 @@ def has_sufficient_balance(state_machine_data: Tuple[str, dict, Account, Session
:rtype: bool
"""
user_input, ussd_session, account, session = state_machine_data
return int(user_input) <= get_cached_available_balance(account.blockchain_address)
identifier = bytes.fromhex(account.blockchain_address)
token_symbol = get_active_token_symbol(account.blockchain_address)
token_data = get_cached_token_data(account.blockchain_address, token_symbol)
decimals = token_data.get('decimals')
return int(user_input) <= get_cached_available_balance(decimals, [identifier, token_symbol.encode('utf-8')])
def save_recipient_phone_to_session_data(state_machine_data: Tuple[str, dict, Account, Session]):
@ -122,9 +125,10 @@ def process_transaction_request(state_machine_data: Tuple[str, dict, Account, Se
to_address = recipient.blockchain_address
from_address = account.blockchain_address
amount = int(ussd_session.get('data').get('transaction_amount'))
token_symbol = get_default_token_symbol()
token_symbol = get_active_token_symbol(account.blockchain_address)
token_data = get_cached_token_data(account.blockchain_address, token_symbol)
decimals = token_data.get('decimals')
outgoing_tx_processor = OutgoingTransaction(chain_str=chain_str,
from_address=from_address,
to_address=to_address)
outgoing_tx_processor.transfer(amount=amount, token_symbol=token_symbol)
outgoing_tx_processor.transfer(amount=amount, decimals=decimals, token_symbol=token_symbol)

67
apps/cic-ussd/cic_ussd/tasks/callback_handler.py
View File

@ -1,4 +1,5 @@
# standard imports
import json
import logging
from datetime import timedelta
@ -7,7 +8,6 @@ from datetime import timedelta
import celery
from cic_types.condiments import MetadataPointer
# local imports
from cic_ussd.account.balance import get_balances, calculate_available_balance
from cic_ussd.account.statement import generate
@ -15,8 +15,15 @@ from cic_ussd.cache import Cache, cache_data, cache_data_key, get_cached_data
from cic_ussd.account.chain import Chain
from cic_ussd.db.models.base import SessionBase
from cic_ussd.db.models.account import Account
from cic_ussd.processor.util import wait_for_cache
from cic_ussd.account.statement import filter_statement_transactions
from cic_ussd.account.transaction import transaction_actors
from cic_ussd.account.tokens import (collate_token_metadata,
get_cached_token_data,
get_default_token_symbol,
handle_token_symbol_list,
process_token_data,
set_active_token)
from cic_ussd.error import AccountCreationDataNotFound
from cic_ussd.tasks.base import CriticalSQLAlchemyTask
@ -58,6 +65,9 @@ def account_creation_callback(self, result: str, url: str, status_code: int):
session.close()
logg.debug(f'recorded account with identifier: {result}')
token_symbol = get_default_token_symbol()
set_active_token(blockchain_address=result, token_symbol=token_symbol)
queue = self.request.delivery_info.get('routing_key')
s_phone_pointer = celery.signature(
'cic_ussd.tasks.metadata.add_phone_pointer', [result, phone_number], queue=queue
@ -88,8 +98,16 @@ def balances_callback(result: list, param: str, status_code: int):
raise ValueError(f'Unexpected status code: {status_code}.')
balances = result[0]
identifier = bytes.fromhex(param)
key = cache_data_key(identifier, MetadataPointer.BALANCES)
identifier = []
param = param.split(',')
for identity in param:
try:
i = bytes.fromhex(identity)
identifier.append(i)
except ValueError:
i = identity.encode('utf-8')
identifier.append(i)
key = cache_data_key(identifier=identifier, salt=MetadataPointer.BALANCES)
cache_data(key, json.dumps(balances))
@ -122,6 +140,38 @@ def statement_callback(self, result, param: str, status_code: int):
generate(param, queue, sender_transaction)
@celery_app.task
def token_data_callback(result: dict, param: str, status_code: int):
"""
:param result:
:type result:
:param param:
:type param:
:param status_code:
:type status_code:
:return:
:rtype:
"""
if status_code != 0:
raise ValueError(f'Unexpected status code: {status_code}.')
token = result[0]
token_symbol = token.get('symbol')
identifier = token_symbol.encode('utf-8')
token_meta_key = cache_data_key(identifier, MetadataPointer.TOKEN_META_SYMBOL)
token_info_key = cache_data_key(identifier, MetadataPointer.TOKEN_PROOF_SYMBOL)
token_meta = get_cached_data(token_meta_key)
token_meta = json.loads(token_meta)
token_info = get_cached_data(token_info_key)
token_info = json.loads(token_info)
token_data = collate_token_metadata(token_info=token_info, token_metadata=token_meta)
token_data = {**token_data, **token}
token_data_key = cache_data_key([bytes.fromhex(param), identifier], MetadataPointer.TOKEN_DATA)
cache_data(token_data_key, json.dumps(token_data))
handle_token_symbol_list(blockchain_address=param, token_symbol=token_symbol)
@celery_app.task(bind=True)
def transaction_balances_callback(self, result: list, param: dict, status_code: int):
"""
@ -138,10 +188,15 @@ def transaction_balances_callback(self, result: list, param: dict, status_code:
"""
if status_code != 0:
raise ValueError(f'Unexpected status code: {status_code}.')
balances_data = result[0]
available_balance = calculate_available_balance(balances_data)
transaction = param
token_symbol = transaction.get('token_symbol')
blockchain_address = transaction.get('blockchain_address')
identifier = [bytes.fromhex(blockchain_address), token_symbol.encode('utf-8')]
wait_for_cache(identifier, f'Cached token data for: {token_symbol}', MetadataPointer.TOKEN_DATA)
token_data = get_cached_token_data(blockchain_address, token_symbol)
decimals = token_data.get('decimals')
available_balance = calculate_available_balance(balances_data, decimals)
transaction['available_balance'] = available_balance
queue = self.request.delivery_info.get('routing_key')
@ -175,6 +230,8 @@ def transaction_callback(result: dict, param: str, status_code: int):
source_token_symbol = result.get('source_token_symbol')
source_token_value = result.get('source_token_value')
process_token_data(blockchain_address=recipient_blockchain_address, token_symbol=destination_token_symbol)
recipient_metadata = {
"alt_blockchain_address": sender_blockchain_address,
"blockchain_address": recipient_blockchain_address,

9
apps/cic-ussd/cic_ussd/tasks/notifications.py
View File

@ -6,6 +6,7 @@ import logging
import celery
# local imports
from cic_ussd.account.tokens import get_cached_token_data
from cic_ussd.account.transaction import from_wei
from cic_ussd.notifications import Notifier
from cic_ussd.phone_number import Support
@ -25,11 +26,15 @@ def transaction(notification_data: dict):
"""
role = notification_data.get('role')
token_value = notification_data.get('token_value')
amount = token_value if token_value == 0 else from_wei(token_value)
token_symbol = notification_data.get('token_symbol')
blockchain_address = notification_data.get('blockchain_address')
token_data = get_cached_token_data(blockchain_address, token_symbol)
decimals = token_data.get('decimals')
amount = token_value if token_value == 0 else from_wei(decimals, token_value)
balance = notification_data.get('available_balance')
phone_number = notification_data.get('phone_number')
preferred_language = notification_data.get('preferred_language')
token_symbol = notification_data.get('token_symbol')
alt_metadata_id = notification_data.get('alt_metadata_id')
metadata_id = notification_data.get('metadata_id')
transaction_type = notification_data.get('transaction_type')

9
apps/cic-ussd/cic_ussd/tasks/processor.py
View File

@ -47,6 +47,7 @@ def cache_statement(parsed_transaction: dict, querying_party: str):
statement_transactions = []
if cached_statement:
statement_transactions = json.loads(cached_statement)
if parsed_transaction not in statement_transactions:
statement_transactions.append(parsed_transaction)
data = json.dumps(statement_transactions)
identifier = bytes.fromhex(querying_party)
@ -74,6 +75,14 @@ def parse_transaction(transaction: dict) -> dict:
role = transaction.get('role')
alt_blockchain_address = transaction.get('alt_blockchain_address')
blockchain_address = transaction.get('blockchain_address')
identifier = bytes.fromhex(blockchain_address)
token_symbol = transaction.get('token_symbol')
if role == 'recipient':
key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_LAST_RECEIVED)
cache_data(key, token_symbol)
if role == 'sender':
key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_LAST_SENT)
cache_data(key, token_symbol)
account = validate_transaction_account(blockchain_address, role, session)
alt_account = session.query(Account).filter_by(blockchain_address=alt_blockchain_address).first()
if alt_account:

2
apps/cic-ussd/requirements.txt
View File

@ -6,7 +6,7 @@ celery==4.4.7
cffi==1.14.6
cic-eth~=0.12.5a1
cic-notify~=0.4.0a11
cic-types~=0.2.1a2
cic-types~=0.2.1a7
confini>=0.3.6rc4,<0.5.0
phonenumbers==8.12.12
psycopg2==2.8.6

7
apps/cic-ussd/states/token_management_states.json Normal file
View File

@ -0,0 +1,7 @@
[
"first_account_tokens_set",
"middle_account_tokens_set",
"last_account_tokens_set",
"token_selection_pin_authorization",
"exit_successful_token_selection"
]

6
apps/cic-ussd/transitions/account_statement_transitions.json
View File

@ -8,7 +8,7 @@
{
"trigger": "scan_data",
"source": "first_transaction_set",
"dest": "start",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
},
{
@ -31,7 +31,7 @@
{
"trigger": "scan_data",
"source": "middle_transaction_set",
"dest": "start",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
},
{
@ -48,7 +48,7 @@
{
"trigger": "scan_data",
"source": "last_transaction_set",
"dest": "start",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
},
{

12
apps/cic-ussd/transitions/exit_transitions.json
View File

@ -58,5 +58,17 @@
"source": "exit_successful_transaction",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_ninety_nine_selected"
},
{
"trigger": "scan_data",
"source": "exit_successful_token_selection",
"dest": "start",
"conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
},
{
"trigger": "scan_data",
"source": "exit_successful_token_selection",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_ninety_nine_selected"
}
]

10
apps/cic-ussd/transitions/start_menu_transitions.json
View File

@ -8,15 +8,21 @@
{
"trigger": "scan_data",
"source": "start",
"dest": "account_management",
"dest": "first_account_tokens_set",
"conditions": "cic_ussd.state_machine.logic.menu.menu_two_selected"
},
{
"trigger": "scan_data",
"source": "start",
"dest": "help",
"dest": "account_management",
"conditions": "cic_ussd.state_machine.logic.menu.menu_three_selected"
},
{
"trigger": "scan_data",
"source": "start",
"dest": "help",
"conditions": "cic_ussd.state_machine.logic.menu.menu_four_selected"
},
{
"trigger": "scan_data",
"source": "start",

93
apps/cic-ussd/transitions/token_management_transitions.json Normal file
View File

@ -0,0 +1,93 @@
[
{
"trigger": "scan_data",
"source": "first_account_tokens_set",
"dest": "middle_account_tokens_set",
"conditions": "cic_ussd.state_machine.logic.menu.menu_eleven_selected"
},
{
"trigger": "scan_data",
"source": "first_account_tokens_set",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
},
{
"trigger": "scan_data",
"source": "first_account_tokens_set",
"dest": "token_selection_pin_authorization",
"conditions": "cic_ussd.state_machine.logic.tokens.is_valid_token_selection",
"after": "cic_ussd.state_machine.logic.tokens.process_token_selection"
},
{
"trigger": "scan_data",
"source": "first_account_tokens_set",
"dest": "exit_invalid_menu_option"
},
{
"trigger": "scan_data",
"source": "middle_account_tokens_set",
"dest": "last_account_tokens_set",
"conditions": "cic_ussd.state_machine.logic.menu.menu_eleven_selected"
},
{
"trigger": "scan_data",
"source": "middle_account_tokens_set",
"dest": "first_account_tokens_set",
"conditions": "cic_ussd.state_machine.logic.menu.menu_twenty_two_selected"
},
{
"trigger": "scan_data",
"source": "middle_account_tokens_set",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
},
{
"trigger": "scan_data",
"source": "middle_account_tokens_set",
"dest": "token_selection_pin_authorization",
"conditions": "cic_ussd.state_machine.logic.tokens.is_valid_token_selection",
"after": "cic_ussd.state_machine.logic.tokens.process_token_selection"
},
{
"trigger": "scan_data",
"source": "middle_account_tokens_set",
"dest": "exit_invalid_menu_option"
},
{
"trigger": "scan_data",
"source": "last_account_tokens_set",
"dest": "middle_account_tokens_set",
"conditions": "cic_ussd.state_machine.logic.menu.menu_twenty_two_selected"
},
{
"trigger": "scan_data",
"source": "last_account_tokens_set",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
},
{
"trigger": "scan_data",
"source": "last_account_tokens_set",
"dest": "token_selection_pin_authorization",
"conditions": "cic_ussd.state_machine.logic.tokens.is_valid_token_selection",
"after": "cic_ussd.state_machine.logic.tokens.process_token_selection"
},
{
"trigger": "scan_data",
"source": "last_account_tokens_set",
"dest": "exit_invalid_menu_option"
},
{
"trigger": "scan_data",
"source": "token_selection_pin_authorization",
"dest": "exit_successful_token_selection",
"conditions": "cic_ussd.state_machine.logic.pin.is_authorized_pin",
"after": "cic_ussd.state_machine.logic.tokens.set_selected_active_token"
},
{
"trigger": "scan_data",
"source": "token_selection_pin_authorization",
"dest": "exit",
"conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
}
]

2
apps/cic-ussd/var/lib/locale/helpers.en.yml
View File

@ -9,6 +9,8 @@ en:
Not provided
no_transaction_history: |-
No transaction history
no_tokens_list: |-
No tokens to list
other: |-
Other
received: |-

2
apps/cic-ussd/var/lib/locale/helpers.sw.yml
View File

@ -9,6 +9,8 @@ sw:
Haijawekwa
no_transaction_history: |-
Hamna ripoti ya matumizi
no_tokens_list: |-
Hamna sarafu nyingine
other: |-
Nyingine
received: |-

32
apps/cic-ussd/var/lib/locale/ussd.en.yml
View File

@ -33,14 +33,37 @@ en:
start: |-
CON Balance %{account_balance} %{account_token_name}
1. Send
2. My Account
3. Help
2. My Sarafu
3. My Account
4. Help
enter_transaction_recipient: |-
CON Enter phone number
0. Back
enter_transaction_amount: |-
CON Enter amount
0. Back
first_account_tokens_set: |-
CON Choose a number or symbol from your balances:
%{first_account_tokens_set}
11. Next
00. Exit
middle_account_tokens_set: |-
CON Choose a number or symbol from your balances:
%{middle_account_tokens_set}
11. Next
22. Previous
00. Exit
last_account_tokens_set: |-
CON Choose a number or symbol from your balances:
%{last_account_tokens_set}
22. Previous
00. Exit
token_selection_pin_authorization:
first: |-
CON %{token_data}
Enter pin to select:
retry: |-
%{retry_pin_entry}
account_management: |-
CON My account
1. My profile
@ -73,7 +96,6 @@ en:
0. Back
retry_pin_entry: |-
CON Incorrect PIN entered, please try again. You have %{remaining_attempts} attempts remaining.
0. Back
enter_current_pin:
first: |-
CON Enter current PIN.
@ -203,6 +225,10 @@ en:
Your Sarafu-Network balances is: %{token_balance}
00. Back
99. Exit
exit_successful_token_selection: |-
CON Success! %{token_symbol} is your active Sarafu.
00. Back
99. Exit
invalid_service_code: |-
Please dial %{valid_service_code} to access Sarafu Network
help: |-

32
apps/cic-ussd/var/lib/locale/ussd.sw.yml
View File

@ -32,14 +32,37 @@ sw:
start: |-
CON Salio %{account_balance} %{account_token_name}
1. Tuma
2. Akaunti yangu
3. Usaidizi
2. Sarafu yangu
3. Akaunti yangu
4. Usaidizi
enter_transaction_recipient: |-
CON Weka nambari ya simu
0. Nyuma
enter_transaction_amount: |-
CON Weka kiwango
0. Nyuma
first_account_tokens_set: |-
CON Chagua nambari au ishara kutoka kwa salio zako:
%{first_account_tokens_set}
11. Mbele
00. Ondoka
middle_account_tokens_set: |-
CON Chagua nambari au ishara kutoka kwa salio zako:
%{middle_account_tokens_set}
11. Mbele
22. Nyuma
00. Ondoka
last_account_tokens_set: |-
CON Chagua nambari au ishara kutoka kwa salio zako:
%{last_account_tokens_set}
22. Nyuma
00. Ondoka
token_selection_pin_authorization:
first: |-
CON %{token_data}
Weka nambari ya siri kuchagua:
retry: |-
%{retry_pin_entry}
account_management: |-
CON Akaunti yangu
1. Wasifu wangu
@ -72,7 +95,6 @@ sw:
0. Nyuma
retry_pin_entry: |-
CON Nambari uliyoweka si sahihi, jaribu tena. Una majaribio %{remaining_attempts} yaliyobaki.
0. Back
enter_current_pin:
first: |-
CON Weka nambari ya siri.
@ -202,6 +224,10 @@ sw:
Akaunti yako ya Sarafu ina salio ifuatayo: %{token_balance}
00. Nyuma
99. Ondoka
exit_successful_token_selection: |-
CON Chaguo lako limekamilika, %{token_symbol} ni sarafu itakayotumika.
00. Nyuma
99. Ondoka
invalid_service_code: |-
Bonyeza %{valid_service_code} kutumia mtandao wa Sarafu
help: |-

19
apps/contract-migration/scripts/proofs.py
View File

@ -64,7 +64,8 @@ def wrapper(chain_spec: ChainSpec, rpc: EthHTTPConnection) -> Declarator:
return Declarator(chain_spec, gas_oracle=gas_oracle, nonce_oracle=nonce_oracle, signer=signer)
def write_to_declarator(contract_address: hex, contract_wrapper: Declarator, proof: any, rpc: EthHTTPConnection, signer_address: hex, token_address: hex):
def write_to_declarator(contract_address: hex, contract_wrapper: Declarator, proof: any, rpc: EthHTTPConnection,
signer_address: hex, token_address: hex):
operation = contract_wrapper.add_declaration(contract_address, signer_address, token_address, proof)
results = rpc.do(operation[1])
rpc.wait(results)
@ -90,13 +91,15 @@ if __name__ == '__main__':
token_meta_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_META, identifier=token_address_bytes)
write_metadata(token_meta_writer, token_meta_data)
token_meta_symbol_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_META_SYMBOL, identifier=token_symbol_bytes)
token_meta_symbol_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_META_SYMBOL,
identifier=token_symbol_bytes)
write_metadata(token_meta_symbol_writer, token_meta_data)
token_proof_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_PROOF, identifier=token_address_bytes)
write_metadata(token_proof_writer, token_proof_data)
token_proof_symbol_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_PROOF_SYMBOL, identifier=token_symbol_bytes)
token_proof_symbol_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_PROOF_SYMBOL,
identifier=token_symbol_bytes)
write_metadata(token_proof_symbol_writer, token_proof_data)
rpc = EthHTTPConnection(url=config.get('RPC_PROVIDER'), chain_spec=chain_spec)
@ -112,3 +115,13 @@ if __name__ == '__main__':
rpc=rpc,
signer_address=args.signer_address,
token_address=args.e)
hashed_token_proof = hash_proof(args.token_symbol.encode('utf-8'))
identifier = bytes.fromhex(hashed_token_proof)
token_immutable_proof_writer = MetadataRequestsHandler(cic_type=MetadataPointer.NONE, identifier=identifier)
write_to_declarator(contract_address=args.address_declarator,
contract_wrapper=contract_wrapper,
proof=identifier,
rpc=rpc,
signer_address=args.signer_address,
token_address=args.e)

6
docker-compose.yml
View File

@ -506,6 +506,7 @@ services:
DATABASE_DRIVER: ${DATABASE_DRIVER:-psycopg2}
DATABASE_DEBUG: ${DATABASE_DEBUG:-0}
DATABASE_POOL_SIZE: 0
APP_PASSWORD_PEPPER: ${APP_PASSWORD_PEPPER:-QYbzKff6NhiQzY3ygl2BkiKOpER8RE/Upqs/5aZWW+I=}
CELERY_BROKER_URL: ${CELERY_BROKER_URL:-redis://redis}
CELERY_RESULT_URL: ${CELERY_BROKER_URL:-redis://redis}
CHAIN_SPEC: ${CHAIN_SPEC:-evm:byzantium:8996:bloxberg}
@ -545,6 +546,7 @@ services:
DATABASE_DRIVER: ${DATABASE_DRIVER:-psycopg2}
DATABASE_DEBUG: ${DATABASE_DEBUG:-0}
DATABASE_POOL_SIZE: 0
SERVER_PORT: 9500
restart: on-failure
ports:
- ${DEV_CIC_USER_SERVER_PORT:-63415}:9500
@ -574,11 +576,13 @@ services:
DATABASE_DRIVER: ${DATABASE_DRIVER:-psycopg2}
DATABASE_DEBUG: ${DATABASE_DEBUG:-0}
DATABASE_POOL_SIZE: 0
APP_PASSWORD_PEPPER: ${APP_PASSWORD_PEPPER:-QYbzKff6NhiQzY3ygl2BkiKOpER8RE/Upqs/5aZWW+I=}
CHAIN_SPEC: ${CHAIN_SPEC:-evm:byzantium:8996:bloxberg}
CELERY_BROKER_URL: ${CELERY_BROKER_URL:-redis://redis}
CELERY_RESULT_URL: ${CELERY_RESULT_URL:-redis://redis}
REDIS_PORT: 6379
REDIS_HOST: redis
SERVER_PORT: 9000
restart: on-failure
depends_on:
- postgres
@ -586,7 +590,7 @@ services:
- cic-eth-tasker
- cic-cache-tasker
ports:
- ${DEV_CIC_USER_USSD_SERVER_PORT:-63315}:9500
- ${DEV_CIC_USER_USSD_SERVER_PORT:-63315}:9000
volumes:
- ./apps/contract-migration/testdata/pgp/:/usr/src/secrets/
command: "/root/start_cic_user_ussd_server.sh -vv"