def test_blocks_to_seconds():
import dashlib
from decimal import Decimal
precision = Decimal('0.001')
assert Decimal(dashlib.blocks_to_seconds(0)) == Decimal(0.0)
assert Decimal(dashlib.blocks_to_seconds(2)).quantize(precision) \
== Decimal(314.4).quantize(precision)
assert int(dashlib.blocks_to_seconds(16616)) == 2612035
def is_expired(self, superblockcycle=None):
from constants import SUPERBLOCK_FUDGE_WINDOW
import dashlib
if not superblockcycle:
raise Exception("Required field superblockcycle missing.")
printdbg("In Proposal#is_expired, for Proposal: %s" % self.__dict__)
now = misc.now()
printdbg("\tnow = %s" % now)
# half the SB cycle, converted to seconds
# add the fudge_window in seconds, defined elsewhere in Sentinel
expiration_window_seconds = int(
(dashlib.blocks_to_seconds(superblockcycle) / 2) +
SUPERBLOCK_FUDGE_WINDOW)
printdbg("\texpiration_window_seconds = %s" %
expiration_window_seconds)
# "fully expires" adds the expiration window to end time to ensure a
# valid proposal isn't excluded from SB by cutting it too close
fully_expires_at = self.end_epoch + expiration_window_seconds
printdbg("\tfully_expires_at = %s" % fully_expires_at)
if (fully_expires_at < now):
printdbg("\tProposal end_epoch [%s] < now [%s] , returning True" %
(self.end_epoch, now))
return True
printdbg("Leaving Proposal#is_expired, Expired = False")
return False
def estimate_block_time(self, height):
import dashlib
"""
Called by block_height_to_epoch if block height is in the future.
Call `block_height_to_epoch` instead of this method.
DO NOT CALL DIRECTLY if you don't want a "Oh Noes." exception.
"""
current_block_height = self.rpc_command('getblockcount')
diff = height - current_block_height
if (diff < 0):
raise Exception("Oh Noes.")
future_seconds = dashlib.blocks_to_seconds(diff)
estimated_epoch = int(time.time() + future_seconds)
return estimated_epoch
