def get_block_locator(self):
block_locator = []
it = BlockIterator(self.database, self.database.get_mainchain())
stepsize = 1
while (it.hash != self.database.genesishash):
block_locator.append(it.hash)
i = 0
while it.hasprev() and i < stepsize:
it.prev()
i += 1
stepsize*= 2
#tmp speedup hack
#if stepsize >= 128:
# break
block_locator.append(self.database.genesishash)
return BlockLocator(1, block_locator)
def __init__(self, log, database, lasthash, firsthash=None):
self.log = log
self.database = database
self.firsthash = firsthash
self.lasthash = lasthash
self.last = BlockIterator(database, lasthash)
