def get_bars(self, pcontract, dt_start, dt_end):
try:
logger.info('trying to load from cache')
return self.cache.get_bars(pcontract, dt_start, dt_end)
except LoadCacheException as e:
logger.info('updating cache')
missing_range = e.missing_range
logger.info('missing range: {0}', missing_range)
missing_data = []
for start, end in missing_range:
wrapper = self.datasource.get_bars(pcontract, start, end)
missing_data.append(
HashObject.new(data=wrapper.data, start=start, end=end))
self.cache.save_data(missing_data, pcontract)
logger.info('loading cache')
return self.cache.get_bars(pcontract, dt_start, dt_end)
def get_bars(self, pcontract, dt_start, dt_end):
try:
logger.info('trying to load from cache')
return self.cache.get_bars(pcontract, dt_start, dt_end)
except LoadCacheException as e:
logger.info('updating cache')
missing_range = e.missing_range
logger.info('missing range: {0}', missing_range)
missing_data = []
for start, end in missing_range:
wrapper = self.datasource.get_bars(pcontract, start, end)
missing_data.append(HashObject.new(data=wrapper.data,
start=start,
end=end))
self.cache.save_data(missing_data, pcontract)
logger.info('loading cache')
return self.cache.get_bars(pcontract, dt_start, dt_end)
def on_register(self, name):
logger.info('register datasource: {cls} => {name}',
cls=self.cls,
name=name)
def on_register(self, name):
logger.info('register datasource: {cls} => {name}',
cls=self.cls, name=name)