cic-internal-integration/apps/contract-migration/scripts/traffic.py

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2021-02-21 16:41:37 +01:00
# standard imports
import os
import logging
import re
import sys
import json
# external imports
import redis
import celery
from chainsyncer.backend import MemBackend
from chainsyncer.driver import HeadSyncer
from chainlib.eth.connection import HTTPConnection
from chainlib.eth.gas import DefaultGasOracle
from chainlib.eth.nonce import DefaultNonceOracle
from chainlib.eth.block import block_latest
from hexathon import strip_0x
# local imports
import common
from cmd.traffic import (
TrafficItem,
TrafficRouter,
TrafficProvisioner,
TrafficSyncHandler,
)
from cmd.traffic import add_args as add_traffic_args
# common basics
script_dir = os.path.realpath(os.path.dirname(__file__))
logg = common.log.create()
argparser = common.argparse.create(script_dir, common.argparse.full_template)
argparser = common.argparse.add(argparser, add_traffic_args, 'traffic')
args = common.argparse.parse(argparser, logg)
config = common.config.create(args.c, args, args.env_prefix)
# map custom args to local config entries
batchsize = args.batch_size
if batchsize < 1:
batchsize = 1
logg.info('batch size {}'.format(batchsize))
config.add(batchsize, '_BATCH_SIZE', True)
config.add(args.redis_host_callback, '_REDIS_HOST_CALLBACK', True)
config.add(args.redis_port_callback, '_REDIS_PORT_CALLBACK', True)
config.add(args.y, '_KEYSTORE_FILE', True)
config.add(args.q, '_CELERY_QUEUE', True)
common.config.log(config)
def main():
# create signer (not currently in use, but needs to be accessible for custom traffic item generators)
(signer_address, signer) = common.signer.from_keystore(config.get('_KEYSTORE_FILE'))
# connect to celery
celery.Celery(broker=config.get('CELERY_BROKER_URL'), backend=config.get('CELERY_RESULT_URL'))
# set up registry
w3 = common.rpc.create(config.get('ETH_PROVIDER')) # replace with HTTPConnection when registry has been so refactored
registry = common.registry.init_legacy(config, w3)
# Connect to blockchain with chainlib
conn = HTTPConnection(config.get('ETH_PROVIDER'))
gas_oracle = DefaultGasOracle(conn)
nonce_oracle = DefaultNonceOracle(signer_address, conn)
# Set up magic traffic handler
traffic_router = TrafficRouter()
traffic_router.apply_import_dict(config.all(), config)
handler = TrafficSyncHandler(config, traffic_router)
# Set up syncer
syncer_backend = MemBackend(config.get('CIC_CHAIN_SPEC'), 0)
o = block_latest()
r = conn.do(o)
block_offset = int(strip_0x(r), 16) + 1
syncer_backend.set(block_offset, 0)
# Set up provisioner for common task input data
TrafficProvisioner.oracles['token']= common.registry.TokenOracle(w3, config.get('CIC_CHAIN_SPEC'), registry)
TrafficProvisioner.oracles['account'] = common.registry.AccountsOracle(w3, config.get('CIC_CHAIN_SPEC'), registry)
TrafficProvisioner.default_aux = {
'chain_spec': config.get('CIC_CHAIN_SPEC'),
'registry': registry,
'redis_host_callback': config.get('_REDIS_HOST_CALLBACK'),
'redis_port_callback': config.get('_REDIS_PORT_CALLBACK'),
'redis_db': config.get('REDIS_DB'),
'api_queue': config.get('_CELERY_QUEUE'),
}
syncer = HeadSyncer(syncer_backend, loop_callback=handler.refresh)
syncer.add_filter(handler)
syncer.loop(1, conn)
if __name__ == '__main__':
main()