def _initialize_transactions_queues(self, chain_state: ChainState):
pending_transactions = views.get_pending_transactions(chain_state)
log.debug(
'Processing pending transactions',
num_pending_transactions=len(pending_transactions),
node=pex(self.address),
)
with self.dispatch_events_lock:
for transaction in pending_transactions:
try:
self.raiden_event_handler.on_raiden_event(self, transaction)
except RaidenRecoverableError as e:
log.error(str(e))
except InvalidDBData:
raise
except RaidenUnrecoverableError as e:
log_unrecoverable = (
self.config['environment_type'] == Environment.PRODUCTION and
not self.config['unrecoverable_error_should_crash']
)
if log_unrecoverable:
log.error(str(e))
else:
raise
def _initialize_transactions_queues(self, chain_state: ChainState):
pending_transactions = views.get_pending_transactions(chain_state)
log.debug(
'Processing pending transactions',
num_pending_transactions=len(pending_transactions),
node=pex(self.address),
)
with self.dispatch_events_lock:
for transaction in pending_transactions:
try:
self.raiden_event_handler.on_raiden_event(self, transaction)
except RaidenRecoverableError as e:
log.error(str(e))
except InvalidDBData:
raise
except RaidenUnrecoverableError as e:
log_unrecoverable = (
self.config['environment_type'] == Environment.PRODUCTION and
not self.config['unrecoverable_error_should_crash']
)
if log_unrecoverable:
log.error(str(e))
else:
raise
def _initialize_transactions_queues(self, chain_state: ChainState):
"""Initialize the pending transaction queue from the previous run.
Note:
This will only send the transactions which don't have their
side-effects applied. Transactions which another node may have sent
already will be detected by the alarm task's first run and cleared
from the queue (e.g. A monitoring service update transfer).
"""
assert self.alarm.is_primed(), f"AlarmTask not primed. node:{self!r}"
pending_transactions = views.get_pending_transactions(chain_state)
log.debug(
"Processing pending transactions",
num_pending_transactions=len(pending_transactions),
node=pex(self.address),
)
for transaction in pending_transactions:
try:
self.raiden_event_handler.on_raiden_event(
raiden=self, chain_state=chain_state, event=transaction)
except RaidenRecoverableError as e:
log.error(str(e))
except InvalidDBData:
raise
except RaidenUnrecoverableError as e:
log_unrecoverable = (
self.config["environment_type"] == Environment.PRODUCTION
and not self.config["unrecoverable_error_should_crash"])
if log_unrecoverable:
log.error(str(e))
else:
raise
def _initialize_transactions_queues(self, chain_state: ChainState):
pending_transactions = views.get_pending_transactions(chain_state)
log.debug(
'Processing pending transactions',
num_pending_transactions=len(pending_transactions),
node=pex(self.address),
)
with self.dispatch_events_lock:
for transaction in pending_transactions:
self.add_pending_greenlet(
self.handle_event(raiden_event=transaction), )
def start(self):
""" Start the node synchronously. Raises directly if anything went wrong on startup """
if not self.stop_event.ready():
raise RuntimeError(f'{self!r} already started')
self.stop_event.clear()
if self.database_dir is not None:
self.db_lock.acquire(timeout=0)
assert self.db_lock.is_locked
# start the registration early to speed up the start
if self.config['transport_type'] == 'udp':
endpoint_registration_greenlet = gevent.spawn(
self.discovery.register,
self.address,
self.config['transport']['udp']['external_ip'],
self.config['transport']['udp']['external_port'],
)
storage = sqlite.SQLiteStorage(self.database_path,
serialize.JSONSerializer())
self.wal = wal.restore_to_state_change(
transition_function=node.state_transition,
storage=storage,
state_change_identifier='latest',
)
if self.wal.state_manager.current_state is None:
log.debug(
'No recoverable state available, created inital state',
node=pex(self.address),
)
block_number = self.chain.block_number()
state_change = ActionInitChain(
random.Random(),
block_number,
self.chain.node_address,
self.chain.network_id,
)
self.wal.log_and_dispatch(state_change)
payment_network = PaymentNetworkState(
self.default_registry.address,
[], # empty list of token network states as it's the node's startup
)
state_change = ContractReceiveNewPaymentNetwork(
constants.EMPTY_HASH,
payment_network,
)
self.handle_state_change(state_change)
# On first run Raiden needs to fetch all events for the payment
# network, to reconstruct all token network graphs and find opened
# channels
last_log_block_number = 0
else:
# The `Block` state change is dispatched only after all the events
# for that given block have been processed, filters can be safely
# installed starting from this position without losing events.
last_log_block_number = views.block_number(
self.wal.state_manager.current_state)
log.debug(
'Restored state from WAL',
last_restored_block=last_log_block_number,
node=pex(self.address),
)
known_networks = views.get_payment_network_identifiers(
views.state_from_raiden(self))
if known_networks and self.default_registry.address not in known_networks:
configured_registry = pex(self.default_registry.address)
known_registries = lpex(known_networks)
raise RuntimeError(
f'Token network address mismatch.\n'
f'Raiden is configured to use the smart contract '
f'{configured_registry}, which conflicts with the current known '
f'smart contracts {known_registries}', )
# Clear ref cache & disable caching
serialize.RaidenJSONDecoder.ref_cache.clear()
serialize.RaidenJSONDecoder.cache_object_references = False
# Restore the current snapshot group
state_change_qty = self.wal.storage.count_state_changes()
self.snapshot_group = state_change_qty // SNAPSHOT_STATE_CHANGES_COUNT
# Install the filters using the correct from_block value, otherwise
# blockchain logs can be lost.
self.install_all_blockchain_filters(
self.default_registry,
self.default_secret_registry,
last_log_block_number,
)
# Complete the first_run of the alarm task and synchronize with the
# blockchain since the last run.
#
# Notes about setup order:
# - The filters must be polled after the node state has been primed,
# otherwise the state changes won't have effect.
# - The alarm must complete its first run before the transport is started,
# to avoid rejecting messages for unknown channels.
self.alarm.register_callback(self._callback_new_block)
# alarm.first_run may process some new channel, which would start_health_check_for
# a partner, that's why transport needs to be already started at this point
self.transport.start(self)
self.alarm.first_run()
chain_state = views.state_from_raiden(self)
# Dispatch pending transactions
pending_transactions = views.get_pending_transactions(chain_state, )
log.debug(
'Processing pending transactions',
num_pending_transactions=len(pending_transactions),
node=pex(self.address),
)
with self.dispatch_events_lock:
for transaction in pending_transactions:
try:
self.raiden_event_handler.on_raiden_event(
self, transaction)
except RaidenRecoverableError as e:
log.error(str(e))
except RaidenUnrecoverableError as e:
if self.config['network_type'] == NetworkType.MAIN:
if isinstance(e, InvalidDBData):
raise
log.error(str(e))
else:
raise
self.alarm.start()
# after transport and alarm is started, send queued messages
events_queues = views.get_all_messagequeues(chain_state)
for queue_identifier, event_queue in events_queues.items():
self.start_health_check_for(queue_identifier.recipient)
# repopulate identifier_to_results for pending transfers
for event in event_queue:
if type(event) == SendDirectTransfer:
self.identifier_to_results[
event.payment_identifier] = AsyncResult()
message = message_from_sendevent(event, self.address)
self.sign(message)
self.transport.send_async(queue_identifier, message)
# exceptions on these subtasks should crash the app and bubble up
self.alarm.link_exception(self.on_error)
self.transport.link_exception(self.on_error)
# Health check needs the transport layer
self.start_neighbours_healthcheck()
if self.config['transport_type'] == 'udp':
endpoint_registration_greenlet.get(
) # re-raise if exception occurred
super().start()
def start_async(self) -> RaidenGreenletEvent:
""" Start the node asynchronously. """
self.start_event.clear()
self.stop_event.clear()
if self.database_dir is not None:
self.db_lock.acquire(timeout=0)
assert self.db_lock.is_locked
# start the registration early to speed up the start
if self.config['transport_type'] == 'udp':
endpoint_registration_greenlet = gevent.spawn(
self.discovery.register,
self.address,
self.config['transport']['udp']['external_ip'],
self.config['transport']['udp']['external_port'],
)
# The database may be :memory:
storage = sqlite.SQLiteStorage(self.database_path, serialize.PickleSerializer())
self.wal = wal.restore_from_latest_snapshot(
node.state_transition,
storage,
)
if self.wal.state_manager.current_state is None:
log.debug('No recoverable state available, created inital state')
block_number = self.chain.block_number()
state_change = ActionInitChain(
random.Random(),
block_number,
self.chain.node_address,
self.chain.network_id,
)
self.wal.log_and_dispatch(state_change, block_number)
payment_network = PaymentNetworkState(
self.default_registry.address,
[], # empty list of token network states as it's the node's startup
)
state_change = ContractReceiveNewPaymentNetwork(
constants.NULL_ADDRESS,
payment_network,
)
self.handle_state_change(state_change)
# On first run Raiden needs to fetch all events for the payment
# network, to reconstruct all token network graphs and find opened
# channels
last_log_block_number = 0
else:
# The `Block` state change is dispatched only after all the events
# for that given block have been processed, filters can be safely
# installed starting from this position without losing events.
last_log_block_number = views.block_number(self.wal.state_manager.current_state)
log.debug('Restored state from WAL', last_restored_block=last_log_block_number)
# Restore the current snapshot group
self.snapshot_group = last_log_block_number // SNAPSHOT_BLOCK_COUNT
# Install the filters using the correct from_block value, otherwise
# blockchain logs can be lost.
self.install_all_blockchain_filters(
self.default_registry,
self.default_secret_registry,
last_log_block_number,
)
# Complete the first_run of the alarm task and synchronize with the
# blockchain since the last run.
#
# Notes about setup order:
# - The filters must be polled after the node state has been primed,
# otherwise the state changes won't have effect.
# - The alarm must complete its first run before the transport is started,
# to avoid rejecting messages for unknown channels.
self.alarm.register_callback(self._callback_new_block)
self.alarm.first_run()
chain_state = views.state_from_raiden(self)
# Dispatch pending transactions
pending_transactions = views.get_pending_transactions(
chain_state,
)
log.debug(
'Processing pending transactions',
num_pending_transactions=len(pending_transactions),
)
with self.dispatch_events_lock:
for transaction in pending_transactions:
on_raiden_event(self, transaction)
self.alarm.start()
queueids_to_queues = views.get_all_messagequeues(chain_state)
self.transport.start(self, queueids_to_queues)
# Health check needs the transport layer
self.start_neighbours_healthcheck()
if self.config['transport_type'] == 'udp':
def set_start_on_registration(_):
self.start_event.set()
endpoint_registration_greenlet.link_safe(set_start_on_registration)
else:
self.start_event.set()
return self.start_event
