def _get_ib_futures_contract(self, futures_contract_object):
"""
Return a complete and unique IB contract that matches futures_contract_object
This is expensive so not called directly, only by ib_futures_contract which does caching
:param futures_contract_object: contract, containing instrument metadata suitable for IB
:return: a single ib contract object
"""
# Convert to IB world
instrument_object_with_metadata = futures_contract_object.instrument
ibcontract = ib_futures_instrument(instrument_object_with_metadata)
# Register the contract to make logging and error handling cleaner
self.add_contract_to_register(
ibcontract,
log_tags=dict(instrument_code=instrument_object_with_metadata.
instrument_code,
contract_date=futures_contract_object.date))
# The contract date might be 'yyyymm' or 'yyyymmdd'
contract_day_passed = futures_contract_object.contract_date.is_day_defined(
)
if contract_day_passed:
## Already have the expiry
contract_date = futures_contract_object.contract_date
else:
## Don't have the expiry so lose the days at the end so it's just 'YYYYMM'
contract_date = str(futures_contract_object.contract_date)[:6]
ibcontract.lastTradeDateOrContractMonth = contract_date
## We allow multiple contracts in case we have 'yyyymm' and not specified expiry date for VIX
ibcontract_list = self.ib_get_contract_chain(ibcontract)
if len(ibcontract_list) == 0:
## No contracts found
return missing_contract
if len(ibcontract_list) == 1:
## OK no hassle, only one contract no confusion
resolved_contract = ibcontract_list[0]
else:
## It might be a contract with weekly expiries (probably VIX)
## We need to find the right one
try:
resolved_contract = resolve_multiple_expiries(
ibcontract_list, instrument_object_with_metadata)
except Exception as exception:
self.log.warn(
"%s could not resolve contracts: %s" %
(str(instrument_object_with_metadata), exception.args[0]))
return missing_contract
return resolved_contract
def _get_vanilla_ib_futures_contract(
self,
futures_instrument_with_ib_data: futuresInstrumentWithIBConfigData,
contract_date):
"""
Return a complete and unique IB contract that matches contract_object_with_ib_data
This is expensive so not called directly, only by ib_futures_contract which does caching
:param contract_object_with_ib_data: contract, containing instrument metadata suitable for IB
:return: a single ib contract object
"""
# The contract date might be 'yyyymm' or 'yyyymmdd'
ibcontract = ib_futures_instrument(futures_instrument_with_ib_data)
contract_day_passed = contract_date.is_day_defined()
if contract_day_passed:
# Already have the expiry
pass
else:
# Don't have the expiry so lose the days at the end so it's just
# 'YYYYMM'
contract_date = str(contract_date.date_str)[:6]
ibcontract.lastTradeDateOrContractMonth = contract_date
# We allow multiple contracts in case we have 'yyyymm' and not
# specified expiry date for VIX
ibcontract_list = self.ib_get_contract_chain(ibcontract)
if len(ibcontract_list) == 0:
# No contracts found
return missing_contract
if len(ibcontract_list) == 1:
# OK no hassle, only one contract no confusion
resolved_contract = ibcontract_list[0]
else:
# It might be a contract with weekly expiries (probably VIX)
# We need to find the right one
try:
resolved_contract = resolve_multiple_expiries(
ibcontract_list, futures_instrument_with_ib_data)
except Exception as exception:
self.log.warn(
"%s could not resolve contracts: %s" %
(str(futures_instrument_with_ib_data), exception.args[0]))
return missing_contract
return resolved_contract
