2021-02-01 18:12:51 +01:00
|
|
|
|
# standard imports
|
|
|
|
|
|
import logging
|
|
|
|
|
|
import time
|
|
|
|
|
|
|
|
|
|
|
|
# third-party imports
|
|
|
|
|
|
import celery
|
|
|
|
|
|
|
|
|
|
|
|
# local impotes
|
|
|
|
|
|
from .base import Syncer
|
|
|
|
|
|
from cic_eth.queue.tx import set_final_status
|
|
|
|
|
|
from cic_eth.eth import RpcClient
|
|
|
|
|
|
|
|
|
|
|
|
app = celery.current_app
|
|
|
|
|
|
logg = logging.getLogger()
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class MinedSyncer(Syncer):
|
|
|
|
|
|
"""Base implementation of block processor for mined blocks.
|
|
|
|
|
|
|
|
|
|
|
|
Loops through all transactions,
|
|
|
|
|
|
|
|
|
|
|
|
:param bc_cache: Retrieves block cache cursors for chain head and latest processed block.
|
|
|
|
|
|
:type bc_cache: Object implementing methods from cic_eth.sync.SyncerBackend
|
|
|
|
|
|
"""
|
|
|
|
|
|
|
2021-02-21 16:41:37 +01:00
|
|
|
|
yield_delay = 0.005
|
|
|
|
|
|
|
2021-02-01 18:12:51 +01:00
|
|
|
|
def __init__(self, bc_cache):
|
|
|
|
|
|
super(MinedSyncer, self).__init__(bc_cache)
|
|
|
|
|
|
self.block_offset = 0
|
|
|
|
|
|
self.tx_offset = 0
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
def process(self, w3, ref):
|
|
|
|
|
|
"""Processes transactions in a single block, advancing transaction (and block) cursor accordingly.
|
|
|
|
|
|
|
|
|
|
|
|
:param w3: Web3 object
|
|
|
|
|
|
:type w3: web3.Web3
|
|
|
|
|
|
:param ref: Block reference (hash) to process
|
|
|
|
|
|
:type ref: str, 0x-hex
|
|
|
|
|
|
:returns: Block number of next unprocessed block
|
|
|
|
|
|
:rtype: number
|
|
|
|
|
|
"""
|
|
|
|
|
|
b = w3.eth.getBlock(ref)
|
|
|
|
|
|
c = w3.eth.getBlockTransactionCount(ref)
|
|
|
|
|
|
s = 0
|
|
|
|
|
|
if self.block_offset == b.number:
|
|
|
|
|
|
s = self.tx_offset
|
|
|
|
|
|
|
|
|
|
|
|
logg.debug('processing {} (blocknumber {}, count {}, offset {})'.format(ref, b.number, c, s))
|
|
|
|
|
|
|
|
|
|
|
|
for i in range(s, c):
|
|
|
|
|
|
tx = w3.eth.getTransactionByBlock(ref, i)
|
|
|
|
|
|
tx_hash_hex = tx['hash'].hex()
|
|
|
|
|
|
rcpt = w3.eth.getTransactionReceipt(tx_hash_hex)
|
|
|
|
|
|
logg.debug('{}/{} processing tx {} from block {} {}'.format(i+1, c, tx_hash_hex, b.number, ref))
|
|
|
|
|
|
ours = False
|
|
|
|
|
|
# TODO: ensure filter loop can complete on graceful shutdown
|
|
|
|
|
|
for f in self.filter:
|
|
|
|
|
|
#try:
|
2021-02-19 08:06:05 +01:00
|
|
|
|
session = self.bc_cache.connect()
|
|
|
|
|
|
task_uuid = f(w3, tx, rcpt, self.chain(), session)
|
2021-02-01 18:12:51 +01:00
|
|
|
|
#except Exception as e:
|
|
|
|
|
|
# logg.error('error in filter {} tx {}: {}'.format(f, tx_hash_hex, e))
|
|
|
|
|
|
# continue
|
|
|
|
|
|
if task_uuid != None:
|
|
|
|
|
|
logg.debug('tx {} passed to celery task {}'.format(tx_hash_hex, task_uuid))
|
|
|
|
|
|
s = celery.signature(
|
|
|
|
|
|
'set_final_status',
|
|
|
|
|
|
[tx_hash_hex, rcpt['blockNumber'], not rcpt['status']],
|
|
|
|
|
|
)
|
|
|
|
|
|
s.apply_async()
|
|
|
|
|
|
break
|
|
|
|
|
|
next_tx = i + 1
|
|
|
|
|
|
if next_tx == c:
|
|
|
|
|
|
self.bc_cache.set(b.number+1, 0)
|
|
|
|
|
|
else:
|
|
|
|
|
|
self.bc_cache.set(b.number, next_tx)
|
|
|
|
|
|
if c == 0:
|
|
|
|
|
|
logg.info('synced block {} has no transactions'.format(b.number))
|
|
|
|
|
|
#self.bc_cache.session(b.number+1, 0)
|
|
|
|
|
|
self.bc_cache.set(b.number+1, 0)
|
|
|
|
|
|
return b['number']
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
def loop(self, interval):
|
|
|
|
|
|
"""Loop running until the "running" property of Syncer is set to False.
|
|
|
|
|
|
|
|
|
|
|
|
Retrieves latest unprocessed blocks and processes them.
|
|
|
|
|
|
|
|
|
|
|
|
:param interval: Delay in seconds until next attempt if no new blocks are found.
|
|
|
|
|
|
:type interval: int
|
|
|
|
|
|
"""
|
|
|
|
|
|
while self.running and Syncer.running_global:
|
|
|
|
|
|
self.bc_cache.connect()
|
|
|
|
|
|
c = RpcClient(self.chain())
|
|
|
|
|
|
logg.debug('loop execute')
|
|
|
|
|
|
e = self.get(c.w3)
|
|
|
|
|
|
logg.debug('got blocks {}'.format(e))
|
|
|
|
|
|
for block in e:
|
|
|
|
|
|
block_number = self.process(c.w3, block.hex())
|
2021-03-01 21:15:17 +01:00
|
|
|
|
logg.debug('processed block {} {}'.format(block_number, block.hex()))
|
2021-02-01 18:12:51 +01:00
|
|
|
|
self.bc_cache.disconnect()
|
2021-02-21 16:41:37 +01:00
|
|
|
|
if len(e) > 0:
|
|
|
|
|
|
time.sleep(self.yield_delay)
|
|
|
|
|
|
else:
|
|
|
|
|
|
time.sleep(interval)
|
2021-02-01 18:12:51 +01:00
|
|
|
|
logg.info("Syncer no longer set to run, gracefully exiting")
|
