cic-stack/apps/cic-eth/cic_eth/task.py

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# import
import time
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import requests
import logging
import uuid
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# external imports
import celery
import sqlalchemy
from chainlib.chain import ChainSpec
from chainlib.connection import RPCConnection
from chainlib.eth.constant import ZERO_ADDRESS
from chainlib.eth.nonce import RPCNonceOracle
from chainlib.eth.gas import RPCGasOracle
from cic_eth_registry import CICRegistry
from cic_eth_registry.error import UnknownContractError
import liveness.linux
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# local imports
from cic_eth.error import SeppukuError
from cic_eth.db.models.base import SessionBase
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#logg = logging.getLogger().getChild(__name__)
logg = logging.getLogger()
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celery_app = celery.current_app
class BaseTask(celery.Task):
session_func = SessionBase.create_session
call_address = ZERO_ADDRESS
create_nonce_oracle = RPCNonceOracle
create_gas_oracle = RPCGasOracle
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default_token_address = None
default_token_symbol = None
default_token_name = None
default_token_decimals = None
run_dir = '/run'
def create_session(self):
return BaseTask.session_func()
def log_banner(self):
logg.debug('task {} root uuid {}'.format(self.__class__.__name__, self.request.root_id))
return
def on_failure(self, exc, task_id, args, kwargs, einfo):
if isinstance(exc, SeppukuError):
liveness.linux.reset(rundir=self.run_dir)
logg.critical(einfo)
msg = 'received critical exception {}, calling shutdown'.format(str(exc))
s = celery.signature(
'cic_eth.admin.ctrl.shutdown',
[msg],
queue=self.request.delivery_info.get('routing_key'),
)
s.apply_async()
class CriticalTask(BaseTask):
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retry_jitter = True
retry_backoff = True
retry_backoff_max = 8
class CriticalSQLAlchemyTask(CriticalTask):
autoretry_for = (
sqlalchemy.exc.DatabaseError,
sqlalchemy.exc.TimeoutError,
sqlalchemy.exc.ResourceClosedError,
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)
class CriticalWeb3Task(CriticalTask):
autoretry_for = (
requests.exceptions.ConnectionError,
)
safe_gas_threshold_amount = 2000000000 * 60000 * 3
safe_gas_refill_amount = safe_gas_threshold_amount * 5
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class CriticalSQLAlchemyAndWeb3Task(CriticalTask):
autoretry_for = (
sqlalchemy.exc.DatabaseError,
sqlalchemy.exc.TimeoutError,
requests.exceptions.ConnectionError,
sqlalchemy.exc.ResourceClosedError,
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)
safe_gas_threshold_amount = 2000000000 * 60000 * 3
safe_gas_refill_amount = safe_gas_threshold_amount * 5
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class CriticalSQLAlchemyAndSignerTask(CriticalTask):
autoretry_for = (
sqlalchemy.exc.DatabaseError,
sqlalchemy.exc.TimeoutError,
sqlalchemy.exc.ResourceClosedError,
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)
class CriticalWeb3AndSignerTask(CriticalTask):
autoretry_for = (
requests.exceptions.ConnectionError,
)
safe_gas_threshold_amount = 2000000000 * 60000 * 3
safe_gas_refill_amount = safe_gas_threshold_amount * 5
@celery_app.task()
def check_health(self):
pass
# TODO: registry / rpc methods should perhaps be moved to better named module
@celery_app.task()
def registry():
return CICRegistry.address
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@celery_app.task(bind=True, base=BaseTask)
def registry_address_lookup(self, chain_spec_dict, address, connection_tag='default'):
chain_spec = ChainSpec.from_dict(chain_spec_dict)
conn = RPCConnection.connect(chain_spec, tag=connection_tag)
registry = CICRegistry(chain_spec, conn)
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r = registry.by_address(address, sender_address=self.call_address)
return r
@celery_app.task(throws=(UnknownContractError,))
def registry_name_lookup(chain_spec_dict, name, connection_tag='default'):
chain_spec = ChainSpec.from_dict(chain_spec_dict)
conn = RPCConnection.connect(chain_spec, tag=connection_tag)
registry = CICRegistry(chain_spec, conn)
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return registry.by_name(name, sender_address=self.call_address)
@celery_app.task()
def rpc_proxy(chain_spec_dict, o, connection_tag='default'):
chain_spec = ChainSpec.from_dict(chain_spec_dict)
conn = RPCConnection.connect(chain_spec, tag=connection_tag)
return conn.do(o)