14 Commits

Author SHA1 Message Date
lash
5fc27671da Upgrade chaind 2022-05-05 08:10:38 +00:00
lash
8f86e9c970 Implement unsafe address for send 2022-05-04 07:26:17 +00:00
lash
abc619d7b2 Factor out outgoing processor 2022-05-04 05:41:00 +00:00
lash
42aa809500 Defer processing backend error handling to parent 2022-05-02 09:59:50 +00:00
lash
e31367853c Correct erc20 extension req 2022-05-01 06:27:26 +00:00
lash
9522729fa0 Catch backend race 2022-04-30 18:44:52 +00:00
lash
097a6f4b53 Advance nonce on gas token txs only 2022-04-29 06:30:12 +00:00
lash
8d0a1f589b Update chain interface, add chainqueue settings to cli 2022-04-28 12:49:50 +00:00
lash
24a71b6c7f Make sure syncer doesnt croak on invalidstate 2022-04-27 09:01:46 +00:00
lash
b893aaa7b1 Correct paths between syncer and queuer 2022-04-27 06:36:01 +00:00
lash
ab1977b802 Apply queue-specific settings to tasker cli 2022-04-26 21:30:13 +00:00
lash
3d39fea7f8 WIP implement tasker daemon on new settings setup 2022-04-26 19:40:58 +00:00
lash
b19b948be3 implement settings renderer 2022-04-26 17:24:57 +00:00
lash
f961345652 Add socket send option to send script 2022-04-26 15:43:24 +00:00
15 changed files with 180 additions and 170 deletions

1
.gitignore vendored
View File

@@ -6,3 +6,4 @@ build/
*.egg-info
*.sqlite
.coverage
.chaind

View File

@@ -2,6 +2,7 @@
from chainlib.interface import ChainInterface
from chainlib.eth.block import (
block_by_number,
block_latest,
Block,
)
from chainlib.eth.tx import (
@@ -16,3 +17,4 @@ class EthChainInterface(ChainInterface):
self._block_from_src = Block.from_src
self._tx_receipt = receipt
self._src_normalize = Tx.src_normalize
self._block_latest = block_latest

View File

@@ -4,13 +4,3 @@ runtime_dir =
id =
data_dir =
dispatch_delay = 0.01
[database]
engine =
name = chaind
driver =
user =
password =
host =
port =
debug = 0

View File

@@ -5,6 +5,8 @@ import signal
# external imports
import chainlib.eth.cli
import chaind.cli
import chainqueue.cli
from chaind.session import SessionController
from chaind.setup import Environment
from chaind.error import (
@@ -26,10 +28,12 @@ from chainqueue.cache import CacheTokenTx
from chainlib.encode import TxHexNormalizer
from chainlib.chain import ChainSpec
from chaind.adapters.fs import ChaindFsAdapter
from chaind.dispatch import DispatchProcessor
# local imports
from chaind.eth.dispatch import EthDispatcher
from chaind.eth.cache import EthCacheTx
from chaind.eth.settings import ChaindEthSettings
from chaind.eth.dispatch import EthDispatcher
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
@@ -41,61 +45,43 @@ 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('--dispatch-delay', dest='dispatch_delay', type=float, help='socket timeout before processing queue')
queue_arg_flags = 0
chainqueue.cli.process_flags(argparser, queue_arg_flags)
local_arg_flags = chaind.cli.argflag_local_base | chaind.cli.ChaindFlag.DISPATCH | chaind.cli.ChaindFlag.SOCKET
chaind.cli.process_flags(argparser, local_arg_flags)
args = argparser.parse_args()
extra_args = {
'runtime_dir': 'SESSION_RUNTIME_DIR',
'data_dir': 'SESSION_DATA_DIR',
'session_id': 'SESSION_ID',
'dispatch_delay': 'SESSION_DISPATCH_DELAY',
}
config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
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)
base_config_dir = [chainqueue.cli.config_dir, chaind.cli.config_dir]
config = chainlib.eth.cli.Config.from_args(args, arg_flags, base_config_dir=base_config_dir)
config = chaind.cli.process_config(config, args, local_arg_flags)
config = chainqueue.cli.process_config(config, args, queue_arg_flags)
config.add('eth', 'CHAIND_ENGINE', False)
config.add('queue', 'CHAIND_COMPONENT', False)
logg.debug('config loaded:\n{}'.format(config))
def process_outgoing(chain_spec, adapter, rpc, limit=100):
upcoming = adapter.upcoming()
logg.info('process {} {} {}'.format(chain_spec, adapter, rpc))
logg.info('upcoming {}'.format(upcoming))
i = 0
for tx_hash in upcoming:
if adapter.dispatch(tx_hash):
i += 1
return i
settings = ChaindEthSettings(include_queue=True)
settings.process(config)
chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
logg.debug('settings:\n{}'.format(settings))
rpc = chainlib.eth.cli.Rpc()
conn = rpc.connect_by_config(config)
tx_normalizer = TxHexNormalizer().tx_hash
token_cache_store = CacheTokenTx(chain_spec, normalizer=tx_normalizer)
dispatcher = EthDispatcher(conn)
queue_adapter = ChaindFsAdapter(
chain_spec,
config.get('SESSION_DATA_DIR'),
EthCacheTx,
dispatcher,
)
token_cache_store = CacheTokenTx(settings.get('CHAIN_SPEC'), normalizer=tx_normalizer)
dispatcher = EthDispatcher(conn)
processor = DispatchProcessor(settings.get('CHAIN_SPEC'), settings.dir_for('queue'), dispatcher)
ctrl = SessionController(settings, processor.process)
ctrl = SessionController(config, queue_adapter, process_outgoing)
signal.signal(signal.SIGINT, ctrl.shutdown)
signal.signal(signal.SIGTERM, ctrl.shutdown)
logg.info('session id is ' + settings.get('SESSION_ID'))
logg.info('session socket path is ' + settings.get('SESSION_SOCKET_PATH'))
def main():
while True:
@@ -116,6 +102,14 @@ def main():
ctrl.process(conn)
continue
queue_adapter = ChaindFsAdapter(
settings.get('CHAIN_SPEC'),
settings.dir_for('queue'),
EthCacheTx,
dispatcher,
store_sync=False,
)
result_data = None
r = 0 # no error
try:

View File

@@ -10,6 +10,8 @@ import socket
# external imports
import chainlib.eth.cli
import chainqueue.cli
import chaind.cli
from chaind.setup import Environment
from chainlib.eth.gas import price
from chainlib.chain import ChainSpec
@@ -24,32 +26,41 @@ from chaind.eth.cli.output import (
Outputter,
OpMode,
)
from chaind.eth.settings import ChaindEthSettings
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')
arg_flags = chainlib.eth.cli.argflag_std_write
argparser = chainlib.eth.cli.ArgumentParser(arg_flags)
argparser.add_argument('--socket', dest='socket', type=str, help='Socket to send transactions to')
argparser.add_argument('--token-module', dest='token_module', type=str, help='Python module path to resolve tokens from identifiers')
argparser = chainlib.eth.cli.ArgumentParser(arg_flags, arg_long={'-s': '--send-rpc'})
argparser.add_positional('source', required=False, type=str, help='Transaction source file')
local_arg_flags = chaind.cli.argflag_local_socket_client | chaind.cli.ChaindFlag.TOKEN
chaind.cli.process_flags(argparser, local_arg_flags)
chainqueue.cli.process_flags(argparser, 0)
args = argparser.parse_args()
extra_args = {
'socket': None,
'source': None,
}
env = Environment(domain='eth', env=os.environ)
config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
config.add(args.token_module, 'TOKEN_MODULE', True)
base_config_dir = [chaind.cli.config_dir, chainqueue.cli.config_dir]
config = chainlib.eth.cli.Config.from_args(args, arg_flags, base_config_dir=base_config_dir)
config = chainqueue.cli.process_config(config, args, 0)
config = chaind.cli.process_config(config, args, local_arg_flags)
config.add(args.source, '_SOURCE', False)
config.add('eth', 'CHAIND_ENGINE', False)
config.add('queue', 'CHAIND_COMPONENT', False)
logg.debug('config loaded:\n{}'.format(config))
wallet = chainlib.eth.cli.Wallet()
wallet.from_config(config)
settings = ChaindEthSettings(include_queue=True)
settings.process(config)
logg.debug('settings:\n{}'.format(settings))
rpc = chainlib.eth.cli.Rpc(wallet=wallet)
conn = rpc.connect_by_config(config)
@@ -58,19 +69,19 @@ chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
mode = OpMode.STDOUT
re_unix = r'^ipc://(/.+)'
m = re.match(re_unix, config.get('_SOCKET', ''))
m = re.match(re_unix, config.get('SESSION_SOCKET_PATH', ''))
if m != None:
config.add(m.group(1), '_SOCKET', exists_ok=True)
config.add(m.group(1), 'SESSION_SOCKET_PATH', exists_ok=True)
r = 0
try:
stat_info = os.stat(config.get('_SOCKET'))
stat_info = os.stat(config.get('SESSION_SOCKET_PATH'))
if not stat.S_ISSOCK(stat_info.st_mode):
r = 1
except FileNotFoundError:
r = 1
if r > 0:
sys.stderr.write('{} is not a socket\n'.format(config.get('_SOCKET')))
sys.stderr.write('{} is not a socket\n'.format(config.get('SESSION_SOCKET_PATH')))
sys.exit(1)
mode = OpMode.UNIX
@@ -82,18 +93,32 @@ if config.get('_SOURCE') == None:
sys.exit(1)
class SocketSender:
def __init__(self, settings):
self.path = settings.get('SESSION_SOCKET_PATH')
def send(self, tx):
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect(self.path)
s.sendall(tx.encode('utf-8'))
r = s.recv(68)
s.close()
return r
def main():
token_resolver = None
if config.get('TOKEN_MODULE') != None:
if settings.get('TOKEN_MODULE') != None:
import importlib
m = importlib.import_module(config.get('TOKEN_MODULE'))
m = importlib.import_module(settings.get('TOKEN_MODULE'))
m = m.TokenResolver
else:
from chaind.eth.token.gas import GasTokenResolver
m = GasTokenResolver
token_resolver = m(chain_spec, rpc.get_sender_address(), rpc.get_signer(), rpc.get_gas_oracle(), rpc.get_nonce_oracle())
processor = Processor(token_resolver, config.get('_SOURCE'))
processor = Processor(token_resolver, config.get('_SOURCE'), use_checksum=not config.get('_UNSAFE'))
processor.add_processor(CSVProcessor())
sends = None
@@ -103,6 +128,11 @@ def main():
sys.stderr.write('processing error: {}. processors: {}\n'.format(str(e), str(processor)))
sys.exit(1)
sender = None
if config.true('_SOCKET_SEND'):
if settings.get('SESSION_SOCKET_PATH') != None:
sender = SocketSender(settings)
tx_iter = iter(processor)
out = Outputter(mode)
while True:
@@ -112,6 +142,9 @@ def main():
except StopIteration:
break
tx_hex = tx_bytes.hex()
if sender != None:
r = sender.send(tx_hex)
logg.info('sent {} result {}'.format(tx_hex, r))
print(out.do(tx_hex))

View File

@@ -3,20 +3,23 @@ import os
import logging
# external imports
import chainlib.eth.cli
import chainlib.cli
import chainsyncer.cli
import chaind.cli
from chaind.setup import Environment
from chaind.filter import StateFilter
from chaind.adapters.fs import ChaindFsAdapter
from chainlib.eth.block import block_latest
from chainlib.eth.connection import EthHTTPConnection
from chainlib.chain import ChainSpec
from hexathon import strip_0x
from chainsyncer.store.fs import SyncFsStore
from chainsyncer.driver.chain_interface import ChainInterfaceDriver
from chainsyncer.error import SyncDone
# local imports
from chaind.eth.settings import ChaindEthSettings
# local imports
from chaind.eth.cache import EthCacheTx
from chaind.eth.chain import EthChainInterface
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
@@ -26,91 +29,46 @@ 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('--dispatch-delay', dest='dispatch_delay', type=float, help='socket timeout before processing queue')
argparser.add_argument('--offset', type=int, default=0, help='Start sync on this block')
argparser.add_argument('--until', type=int, default=0, help='Terminate sync on this block')
argparser.add_argument('--head', action='store_true', help='Start at current block height (overrides --offset, assumes --keep-alive)')
argparser.add_argument('--keep-alive', action='store_true', dest='keep_alive', help='Continue to sync head after history sync complete')
arg_flags = chainlib.cli.argflag_std_base | chainlib.cli.Flag.CHAIN_SPEC
argparser = chainlib.cli.ArgumentParser(arg_flags)
local_arg_flags = chaind.cli.argflag_local_base
chaind.cli.process_flags(argparser, local_arg_flags)
sync_flags = chainsyncer.cli.SyncFlag.RANGE | chainsyncer.cli.SyncFlag.HEAD
chainsyncer.cli.process_flags(argparser, sync_flags)
args = argparser.parse_args()
extra_args = {
'runtime_dir': 'SESSION_RUNTIME_DIR',
'data_dir': 'SESSION_DATA_DIR',
'session_id': 'SESSION_ID',
'dispatch_delay': 'SESSION_DISPATCH_DELAY',
}
config = chainlib.eth.cli.Config.from_args(args, arg_flags, extra_args=extra_args, base_config_dir=config_dir)
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)
config.add(args.keep_alive, '_KEEP_ALIVE', True)
config.add(args.head, '_HEAD', True)
config.add(args.offset, '_SYNC_OFFSET', True)
base_config_dir = [
chainsyncer.cli.config_dir,
chaind.cli.config_dir,
]
config = chainlib.cli.Config.from_args(args, arg_flags, base_config_dir=base_config_dir)
config = chainsyncer.cli.process_config(config, args, sync_flags)
config = chaind.cli.process_config(config, args, local_arg_flags)
config.add('eth', 'CHAIND_ENGINE', False)
config.add('sync', 'CHAIND_COMPONENT', False)
logg.debug('config loaded:\n{}'.format(config))
chain_spec = ChainSpec.from_chain_str(config.get('CHAIN_SPEC'))
settings = ChaindEthSettings(include_sync=True)
settings.process(config)
conn = EthHTTPConnection(url=config.get('RPC_PROVIDER'), chain_spec=chain_spec)
logg.debug('settings:\n{}'.format(settings))
def main():
o = block_latest()
r = conn.do(o)
block_offset = int(strip_0x(r), 16) + 1
logg.info('network block height is {}'.format(block_offset))
keep_alive = False
session_block_offset = 0
block_limit = 0
if args.head:
session_block_offset = block_offset
block_limit = -1
keep_alive = True
else:
session_block_offset = args.offset
if args.until > 0:
if not args.head and args.until <= session_block_offset:
raise ValueError('sync termination block number must be later than offset ({} >= {})'.format(session_block_offset, args.until))
block_limit = args.until
elif config.true('_KEEP_ALIVE'):
keep_alive=True
block_limit = -1
if session_block_offset == -1:
session_block_offset = block_offset
elif not config.true('_KEEP_ALIVE'):
if block_limit == 0:
block_limit = block_offset
queue_adapter = ChaindFsAdapter(
chain_spec,
config.get('SESSION_DATA_DIR'),
EthCacheTx,
None,
)
fltr = StateFilter(queue_adapter)
sync_store = SyncFsStore(config.get('SESSION_RUNTIME_DIR'), session_id=config.get('SESSION_ID'))
fltr = StateFilter(settings.get('CHAIN_SPEC'), settings.dir_for('queue'), EthCacheTx)
sync_store = SyncFsStore(settings.get('SESSION_DATA_DIR'), session_id=settings.get('SESSION_ID'))
sync_store.register(fltr)
logg.debug('session block ofset {}'.format(session_block_offset))
logg.debug('session block offset {}'.format(settings.get('SYNCER_OFFSET')))
chain_interface = EthChainInterface()
drv = ChainInterfaceDriver(sync_store, chain_interface, offset=session_block_offset, target=block_limit)
drv.run(conn)
drv = ChainInterfaceDriver(sync_store, settings.get('SYNCER_INTERFACE'), offset=settings.get('SYNCER_OFFSET'), target=settings.get('SYNCER_LIMIT'))
try:
drv.run(settings.get('RPC'))
except SyncDone as e:
logg.info('sync done: {}'.format(e))
if __name__ == '__main__':

18
chaind/eth/settings.py Normal file
View File

@@ -0,0 +1,18 @@
# external imports
from chainlib.eth.connection import EthHTTPConnection
from chaind.settings import ChaindSettings
from chaind.eth.chain import EthChainInterface
class ChaindEthSettings(ChaindSettings):
def process_sync_interface(self, config):
self.o['SYNCER_INTERFACE'] = EthChainInterface()
def process_common(self, config):
super(ChaindEthSettings, self).process_common(config)
rpc_provider = config.get('RPC_PROVIDER')
if rpc_provider == None:
rpc_provider = 'http://localhost:8545'
self.o['RPC'] = EthHTTPConnection(url=rpc_provider, chain_spec=self.o['CHAIN_SPEC'])

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@@ -9,7 +9,7 @@ logg = logging.getLogger(__name__)
class BaseTokenResolver:
def __init__(self, chain_spec, sender, signer, gas_oracle, nonce_oracle):
def __init__(self, chain_spec, sender, signer, gas_oracle, nonce_oracle, advance_nonce=False):
self.chain_spec = chain_spec
self.chain_id = chain_spec.chain_id()
self.signer = signer
@@ -19,6 +19,10 @@ class BaseTokenResolver:
self.factory = None
self.gas_limit_start = None
self.gas_price_start = None
if advance_nonce:
self.nonce_getter = self.nonce_oracle.next_nonce
else:
self.nonce_getter = self.nonce_oracle.get_nonce
def reset(self):
@@ -28,7 +32,7 @@ class BaseTokenResolver:
def get_values(self, gas_value, value, executable_address=None):
nonce = self.nonce_oracle.next_nonce()
nonce = self.nonce_getter()
if executable_address == None:
return (value, 0, nonce)

View File

@@ -9,7 +9,7 @@ from chaind.eth.token import BaseTokenResolver
class GasTokenResolver(BaseTokenResolver):
def __init__(self, chain_spec, sender, signer, gas_oracle, nonce_oracle):
super(GasTokenResolver, self).__init__(chain_spec, sender, signer, gas_oracle, nonce_oracle)
super(GasTokenResolver, self).__init__(chain_spec, sender, signer, gas_oracle, nonce_oracle, advance_nonce=True)
self.factory = Gas(self.chain_spec, signer=self.signer, gas_oracle=self.gas_oracle, nonce_oracle=self.nonce_oracle)

View File

@@ -3,7 +3,10 @@ import logging
# external imports
from chaind.error import TxSourceError
from chainlib.eth.address import is_checksum_address
from chainlib.eth.address import (
is_checksum_address,
to_checksum_address,
)
from chainlib.eth.tx import unpack
from chainlib.eth.gas import Gas
from hexathon import (
@@ -17,10 +20,11 @@ logg = logging.getLogger(__name__)
class Processor:
def __init__(self, resolver, source):
def __init__(self, resolver, source, use_checksum=True):
self.resolver = resolver
self.source = source
self.processor = []
self.safe = use_checksum
self.conn = None
@@ -50,9 +54,14 @@ class Processor:
txs = []
for i, r in enumerate(self.content):
logg.debug('processing {}'.format(r))
if not is_checksum_address(r[0]):
raise ValueError('invalid checksum address {} in record {}'.format(r[0], i))
self.content[i][0] = add_0x(r[0])
address = r[0]
if self.safe:
if not is_checksum_address(address):
raise ValueError('invalid checksum address {} in record {}'.format(address, i))
else:
address = to_checksum_address(address)
self.content[i][0] = add_0x(address)
try:
self.content[i][1] = int(r[1])
except ValueError:

View File

@@ -1,6 +1,6 @@
chaind~=0.1.0
hexathon~=0.1.5
chainlib-eth~=0.1.0
chaind~=0.2.7
hexathon~=0.1.6
chainlib-eth~=0.1.2
pyxdg~=0.27
shep~=0.2.3
funga-eth~=0.6.0
shep~=0.2.5
funga-eth~=0.6.1

View File

@@ -1,6 +1,6 @@
[metadata]
name = chaind-eth
version = 0.1.0
version = 0.2.6
description = Queue server for ethereum
author = Louis Holbrook
author_email = dev@holbrook.no
@@ -31,10 +31,11 @@ packages =
chaind.eth
chaind.eth.runnable
chaind.eth.cli
chaind.eth.token
[options.entry_points]
console_scripts =
chaind-eth-tasker = chaind.eth.runnable.tasker:main
chaind-eth-queuer = chaind.eth.runnable.queuer:main
chaind-eth-syncer = chaind.eth.runnable.syncer:main
chaind-eth-send = chaind.eth.runnable.send:main
#chaind-eth-resend = chaind_eth.runnable.resend:main

View File

@@ -27,7 +27,7 @@ while True:
l = f.readline()
if l == '':
break
test_requirements.append(l.rstrip())
erc20_requirements.append(l.rstrip())
f.close()

View File

@@ -1,7 +1,7 @@
[Unit]
Description=Chainqueue transaction dispatch interface
Requires=chaind-eth-sync@.service
After=chaind-eth-sync@.service
#Requires=chaind-eth-sync@.service
#After=chaind-eth-sync@.service
[Service]
Environment="SESSION_ID=%i"

View File

@@ -11,7 +11,7 @@ from chainlib.chain import ChainSpec
from chainqueue.cache import CacheTokenTx
from chainlib.error import RPCException
from chainlib.status import Status as TxStatus
from chaind.unittest.common import TestChaindFsBase
from chaind.unittest.fs import TestChaindFsBase
from chaind.driver import QueueDriver
from chaind.filter import StateFilter
from chainlib.eth.gas import Gas