60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
# standard imports
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import logging
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# external imports
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from hexathon import (
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to_int as hex_to_int,
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strip_0x,
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)
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logg = logging.getLogger(__name__)
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class ChainsyncerSettings:
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def __init__(self):
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self.o = {}
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self.get = self.o.get
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def process_sync_backend(self, config):
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self.o['SYNCER_BACKEND'] = config.get('SYNCER_BACKEND')
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def process_sync_range(self, config):
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o = self.o['SYNCER_INTERFACE'].block_latest()
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r = self.o['RPC'].do(o)
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block_offset = int(strip_0x(r), 16) + 1
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logg.info('network block height at startup is {}'.format(block_offset))
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keep_alive = False
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session_block_offset = 0
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block_limit = 0
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until = 0
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if config.true('_HEAD'):
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self.o['SYNCER_OFFSET'] = block_offset
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self.o['SYNCER_LIMIT'] = -1
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return
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session_block_offset = int(config.get('SYNCER_OFFSET'))
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until = int(config.get('SYNCER_LIMIT'))
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if until > 0:
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if until <= session_block_offset:
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raise ValueError('sync termination block number must be later than offset ({} >= {})'.format(session_block_offset, until))
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block_limit = until
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elif until == -1:
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keep_alive = True
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if session_block_offset == -1:
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session_block_offset = block_offset
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elif config.true('_KEEP_ALIVE'):
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block_limit = -1
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else:
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if block_limit == 0:
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block_limit = block_offset
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self.o['SYNCER_OFFSET'] = session_block_offset
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self.o['SYNCER_LIMIT'] = block_limit
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