cic-stack/apps/cic-eth/cic_eth/queue/balance.py

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2021-02-17 11:04:21 +01:00
# standard imports
import logging
# third-party imports
import celery
from hexathon import strip_0x
# local imports
from cic_registry.chain import ChainSpec
from cic_eth.db import SessionBase
from cic_eth.db.models.otx import Otx
from cic_eth.db.models.tx import TxCache
from cic_eth.db.enum import (
StatusBits,
dead,
)
celery_app = celery.current_app
logg = logging.getLogger()
def __balance_outgoing_compatible(token_address, holder_address, chain_str):
session = SessionBase.create_session()
q = session.query(TxCache.from_value)
q = q.join(Otx)
q = q.filter(TxCache.sender==holder_address)
status_compare = dead()
q = q.filter(Otx.status.op('&')(status_compare)==0)
q = q.filter(TxCache.source_token_address==token_address)
delta = 0
for r in q.all():
delta += int(r[0])
session.close()
return delta
@celery_app.task()
def balance_outgoing(tokens, holder_address, chain_str):
"""Retrieve accumulated value of unprocessed transactions sent from the given address.
:param tokens: list of token spec dicts with addresses to retrieve balances for
:type tokens: list of str, 0x-hex
:param holder_address: Sender address
:type holder_address: str, 0x-hex
:param chain_str: Chain spec string representation
:type chain_str: str
:returns: Tokens dicts with outgoing balance added
:rtype: dict
"""
chain_spec = ChainSpec.from_chain_str(chain_str)
for t in tokens:
b = __balance_outgoing_compatible(t['address'], holder_address, chain_str)
t['balance_outgoing'] = b
return tokens
def __balance_incoming_compatible(token_address, receiver_address, chain_str):
session = SessionBase.create_session()
q = session.query(TxCache.to_value)
q = q.join(Otx)
q = q.filter(TxCache.recipient==receiver_address)
status_compare = dead()
q = q.filter(Otx.status.op('&')(status_compare)==0)
# TODO: this can change the result for the recipient if tx is later obsoleted and resubmission is delayed.
q = q.filter(Otx.status.op('&')(StatusBits.IN_NETWORK)==StatusBits.IN_NETWORK)
q = q.filter(TxCache.destination_token_address==token_address)
delta = 0
for r in q.all():
delta += int(r[0])
session.close()
return delta
@celery_app.task()
def balance_incoming(tokens, receipient_address, chain_str):
"""Retrieve accumulated value of unprocessed transactions to be received by the given address.
:param tokens: list of token spec dicts with addresses to retrieve balances for
:type tokens: list of str, 0x-hex
:param holder_address: Recipient address
:type holder_address: str, 0x-hex
:param chain_str: Chain spec string representation
:type chain_str: str
:returns: Tokens dicts with outgoing balance added
:rtype: dict
"""
chain_spec = ChainSpec.from_chain_str(chain_str)
for t in tokens:
b = __balance_incoming_compatible(t['address'], receipient_address, chain_str)
t['balance_incoming'] = b
return tokens
@celery_app.task()
def assemble_balances(balances_collection):
"""Combines token spec dicts with individual balances into a single token spec dict.
A "balance" means any field that is keyed with a string starting with "balance_"
:param balances_collection: Token spec dicts
:type balances_collection: list of lists of dicts
:returns: Single token spec dict per token with all balances
:rtype: list of dicts
"""
tokens = {}
for c in balances_collection:
for b in c:
address = b['address']
if tokens.get(address) == None:
tokens[address] = {
'address': address,
'converters': b['converters'],
}
for k in b.keys():
if k[:8] == 'balance_':
tokens[address][k] = b[k]
return list(tokens.values())