chaind-eth/chaind/eth/runnable/old/syncer.py

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# standard imports
import sys
import time
import socket
import signal
import os
import logging
import stat
import argparse
import uuid
# external imports
import chainlib.eth.cli
from chaind import Environment
import confini
from hexathon import strip_0x
from chainlib.chain import ChainSpec
from chainlib.eth.connection import EthHTTPConnection
from chainlib.eth.block import block_latest
from chainsyncer.driver.head import HeadSyncer
from chainsyncer.driver.history import HistorySyncer
from chainsyncer.db import dsn_from_config
from chainsyncer.db.models.base import SessionBase
from chainsyncer.backend.sql import SQLBackend
from chainsyncer.error import SyncDone
# local imports
from chaind_eth.filter import StateFilter
from chaind_eth.chain import EthChainInterface
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
script_dir = os.path.dirname(os.path.realpath(__file__))
config_dir = os.path.join(script_dir, '..', 'data', 'config')
env = Environment(domain='eth', env=os.environ)
arg_flags = chainlib.eth.cli.argflag_std_read
argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
argparser.add_argument('--data-dir', type=str, help='data directory')
argparser.add_argument('--runtime-dir', type=str, help='runtime directory')
argparser.add_argument('--session-id', dest='session_id', type=str, help='session identifier')
argparser.add_argument('--offset', default=0, type=int, help='block height to sync history from')
args = argparser.parse_args()
extra_args = {
'runtime_dir': 'SESSION_RUNTIME_DIR',
'data_dir': 'SESSION_DATA_DIR',
'session_id': 'SESSION_ID',
'offset': 'SYNCER_HISTORY_START',
}
#config = chainlib.eth.cli.Config.from_args(args, arg_flags, default_config_dir=config_dir, extend_base_config_dir=config_dir)
config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=[config_dir, os.path.join(config_dir, 'syncer')])
logg.debug('session id {} {}'.format(type(config.get('SESSION_ID')), config.get('SESSION_ID')))
if config.get('SESSION_ID') == None:
config.add(env.session, 'SESSION_ID', exists_ok=True)
if config.get('SESSION_RUNTIME_DIR') == None:
config.add(env.runtime_dir, 'SESSION_RUNTIME_DIR', exists_ok=True)
if config.get('SESSION_DATA_DIR') == None:
config.add(env.data_dir, 'SESSION_DATA_DIR', exists_ok=True)
if not config.get('SESSION_SOCKET_PATH'):
socket_path = os.path.join(config.get('SESSION_RUNTIME_DIR'), config.get('SESSION_ID'), 'chaind.sock')
config.add(socket_path, 'SESSION_SOCKET_PATH', True)
if config.get('DATABASE_ENGINE') == 'sqlite':
config.add(os.path.join(config.get('SESSION_DATA_DIR'), config.get('DATABASE_NAME') + '.sqlite'), 'DATABASE_NAME', exists_ok=True)
config.censor('PASSWORD', 'DATABASE')
logg.debug('config loaded:\n{}'.format(config))
chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
dsn = dsn_from_config(config)
logg.debug('dns {}'.format(dsn))
SQLBackend.setup(dsn, debug=config.true('DATABASE_DEBUG'))
rpc = EthHTTPConnection(url=config.get('RPC_PROVIDER'), chain_spec=chain_spec)
def register_filter_tags(filters, session):
for f in filters:
tag = f.tag()
try:
add_tag(session, tag[0], domain=tag[1])
session.commit()
logg.info('added tag name "{}" domain "{}"'.format(tag[0], tag[1]))
except sqlalchemy.exc.IntegrityError:
session.rollback()
logg.debug('already have tag name "{}" domain "{}"'.format(tag[0], tag[1]))
def main():
o = block_latest()
r = rpc.do(o)
block_offset = int(strip_0x(r), 16) + 1
syncers = []
syncer_backends = SQLBackend.resume(chain_spec, block_offset)
if len(syncer_backends) == 0:
initial_block_start = config.get('SYNCER_HISTORY_START', 0)
if isinstance(initial_block_start, str):
initial_block_start = int(initial_block_start)
initial_block_offset = block_offset
if config.true('SYNCER_SKIP_HISTORY'):
initial_block_start = block_offset
initial_block_offset += 1
syncer_backends.append(SQLBackend.initial(chain_spec, initial_block_offset, start_block_height=initial_block_start))
logg.info('found no backends to resume, adding initial sync from history start {} end {}'.format(initial_block_start, initial_block_offset))
else:
for syncer_backend in syncer_backends:
logg.info('resuming sync session {}'.format(syncer_backend))
chain_interface = EthChainInterface()
for syncer_backend in syncer_backends:
syncers.append(HistorySyncer(syncer_backend, chain_interface))
syncer_backend = SQLBackend.live(chain_spec, block_offset+1)
syncers.append(HeadSyncer(syncer_backend, chain_interface))
state_filter = StateFilter(chain_spec)
filters = [
state_filter,
]
i = 0
for syncer in syncers:
logg.debug('running syncer index {}'.format(i))
for f in filters:
syncer.add_filter(f)
r = syncer.loop(int(config.get('SYNCER_LOOP_INTERVAL')), rpc)
sys.stderr.write("sync {} done at block {}\n".format(syncer, r))
i += 1
sys.exit(0)
if __name__ == '__main__':
main()