def start(self): """ Start the node. """ # XXX Should this really be here? Or will start() never be called again # after stop() in the lifetime of Raiden apart from the tests? This is # at least at the moment prompted by tests/integration/test_transer.py if self.stop_event and self.stop_event.is_set(): self.stop_event.clear() if self.database_dir is not None: self.db_lock.acquire(timeout=0) assert self.db_lock.is_locked # The database may be :memory: storage = sqlite.SQLiteStorage(self.database_path, serialize.PickleSerializer()) self.wal, unapplied_events = wal.restore_from_latest_snapshot( node.state_transition, storage, ) last_log_block_number = None # First run, initialize the basic state if self.wal.state_manager.current_state is None: block_number = self.chain.block_number() state_change = ActionInitNode( random.Random(), block_number, ) self.wal.log_and_dispatch(state_change, block_number) else: # Get the last known block number after reapplying all the state changes from the log last_log_block_number = views.block_number(self.wal.state_manager.current_state) # The alarm task must be started after the snapshot is loaded or the # state is primed, the callbacks assume the node is initialized. self.alarm.start() self.alarm.register_callback(self.poll_blockchain_events) self.alarm.register_callback(self.set_block_number) self._block_number = self.chain.block_number() # Registry registration must start *after* the alarm task. This # avoids corner cases where the registry is queried in block A, a new # block B is mined, and the alarm starts polling at block C. # If last_log_block_number is None, the wal.state_manager.current_state was # None in the log, meaning we don't have any events we care about, so just # read the latest state from the network self.register_payment_network(self.default_registry.address, last_log_block_number) # Start the protocol after the registry is queried to avoid warning # about unknown channels. self.protocol.start() # Health check needs the protocol layer self.start_neighbours_healthcheck() self.start_event.set() for event in unapplied_events: on_raiden_event(self, event)
def cross_handle_recieved_locked_transfer(self, transfer, cross_id): self.start_health_check_for(transfer.initiator) state_change = target_init(transfer) block_number = self.get_block_number() event_list = self.wal.log_and_dispatch(state_change, block_number) for event in event_list: log.debug('RAIDEN EVENT', node=pex(self.address), raiden_event=event) if type(event) == SendSecretRequest: secret_request_message = message_from_sendevent( event, self.address) self.sign(secret_request_message) cross_secret_request_message = CrossSecretRequest( secret_request_message, cross_id) self.sign(cross_secret_request_message) self.transport.send_async( event.recipient, event.queue_name, cross_secret_request_message, ) continue on_raiden_event(self, event) return event_list
def handle_state_change(self, state_change): log.debug('STATE CHANGE', node=pex(self.address), state_change=state_change) # Take a snapshot every SNAPSHOT_BLOCK_COUNT # TODO: Gather more data about storage requirements # and update the value to specify how often we need # capturing a snapshot should take place block_number = self.get_block_number() new_snapshot_group = block_number // SNAPSHOT_BLOCK_COUNT if new_snapshot_group > self.snapshot_group: log.debug(f'Storing snapshot at block: {block_number}') self.wal.snapshot() self.snapshot_group = new_snapshot_group event_list = self.wal.log_and_dispatch(state_change) if self.dispatch_events_lock.locked(): return [] for event in event_list: log.debug('RAIDEN EVENT', node=pex(self.address), raiden_event=event) on_raiden_event(self, event) return event_list
def handle_cross_state_change(self, state_change, cross_id, secret, btc_amount, block_number=None): if block_number is None: block_number = self.get_block_number() event_list = self.wal.log_and_dispatch(state_change, block_number) row = self.wal.storage.get_lnd(1) macaroon = row[4] lnd_url = "https://{}/v1/invoices".format(self.config['lnd_address']) lnd_headers = {'Grpc-Metadata-macaroon': macaroon} lnd_r = base64.b64encode(secret) lnd_data = { 'value': btc_amount, 'r_preimage': lnd_r.decode('utf-8'), 'type': "CROSS_CHAIN_INVOICE" } res = requests.post(lnd_url, headers=lnd_headers, data=json.dumps(lnd_data), verify=False) res_json = res.json() lnd_r_hash = res_json['r_hash'] lnd_payment_request = res_json['payment_request'] print('send invoice succ, lnd_r_hash:', lnd_r_hash) for event in event_list: log.debug('RAIDEN EVENT', node=pex(self.address), raiden_event=event) if type(event) == SendLockedTransfer: locked_transfer_message = message_from_sendevent( event, self.address) self.sign(locked_transfer_message) self.wal.storage.change_crosstransaction_r( cross_id, encode_hex(locked_transfer_message.lock.secrethash), lnd_r_hash) tmp_r_hash = base64.b64decode(lnd_r_hash) raiden_r_hash = locked_transfer_message.lock.secrethash hex_r_hash = encode_hex(tmp_r_hash) lnd_string = bytes(lnd_payment_request, "utf-8") cross_transfer_message = CrossLockedTransfer( locked_transfer_message, cross_id, lnd_string) self.sign(cross_transfer_message) self.transport.send_async(cross_transfer_message.recipient, bytes("456", 'utf-8'), cross_transfer_message) print('corss_message send ok') continue on_raiden_event(self, event)
def handle_state_change(self, state_change, block_number=None): log.debug('STATE CHANGE', node=pex(self.address), state_change=state_change) if block_number is None: block_number = self.get_block_number() event_list = self.wal.log_and_dispatch(state_change, block_number) for event in event_list: log.debug('EVENT', node=pex(self.address), raiden_event=event) on_raiden_event(self, event) return event_list
def handle_state_change(self, state_change, block_number=None): log.debug('STATE CHANGE', node=pex(self.address), state_change=state_change) if block_number is None: block_number = self.get_block_number() event_list = self.wal.log_and_dispatch(state_change, block_number) for event in event_list: log.debug('RAIDEN EVENT', node=pex(self.address), raiden_event=event) on_raiden_event(self, event) return event_list
def start(self): """ Start the node. """ if self.stop_event and self.stop_event.is_set(): self.stop_event.clear() if self.database_dir is not None: self.db_lock.acquire(timeout=0) assert self.db_lock.is_locked # The database may be :memory: storage = sqlite.SQLiteStorage(self.database_path, serialize.PickleSerializer()) self.wal, unapplied_events = wal.restore_from_latest_snapshot( node.state_transition, storage, ) if self.wal.state_manager.current_state is None: block_number = self.chain.block_number() state_change = ActionInitChain( random.Random(), block_number, 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(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) # 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() self.alarm.start() queueids_to_queues = views.get_all_messagequeues( views.state_from_raiden(self)) self.transport.start(self, queueids_to_queues) # Health check needs the transport layer self.start_neighbours_healthcheck() for event in unapplied_events: on_raiden_event(self, event) self.start_event.set()
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'], ) # The database may be :memory: storage = sqlite.SQLiteStorage(self.database_path, serialize.JSONSerializer()) 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', 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.NULL_HASH_BYTES, 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 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), node=pex(self.address), ) 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) # repopulate identifier_to_results for pending transfers for queue_messages in queueids_to_queues.values(): for message in queue_messages: if isinstance(message, SendDirectTransfer): self.identifier_to_results[ message.payment_identifier] = AsyncResult() self.transport.start(self, queueids_to_queues) # 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(self): """ Start the node. """ if self.stop_event and self.stop_event.is_set(): self.stop_event.clear() if self.database_dir is not None: self.db_lock.acquire(timeout=0) assert self.db_lock.is_locked # The database may be :memory: storage = sqlite.SQLiteStorage(self.database_path, serialize.PickleSerializer()) self.wal, unapplied_events = wal.restore_from_latest_snapshot( node.state_transition, storage, ) if self.wal.state_manager.current_state is None: block_number = self.chain.block_number() state_change = ActionInitNode( random.Random(), block_number, ) self.wal.log_and_dispatch(state_change, block_number) # 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 = None 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) # The time the alarm task is started or the callbacks are installed doesn't # really matter. # # But it is of paramount importance to: # - Install the filters which will be polled by poll_blockchain_events # after the state has been primed, otherwise the state changes won't # have effect. # - Install the filters using the correct from_block value, otherwise # blockchain logs can be lost. self.alarm.register_callback(self._callback_new_block) self.alarm.start() self.install_payment_network_filters( self.default_registry.address, last_log_block_number, ) # Start the transport after the registry is queried to avoid warning # about unknown channels. queueids_to_queues = views.get_all_messagequeues(views.state_from_raiden(self)) self.transport.start(self, queueids_to_queues) # Health check needs the transport layer self.start_neighbours_healthcheck() for event in unapplied_events: on_raiden_event(self, event) self.start_event.set()
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
def start(self): """ Start the node. """ if self.stop_event and self.stop_event.is_set(): self.stop_event.clear() if self.database_dir is not None: self.db_lock.acquire(timeout=0) assert self.db_lock.is_locked # The database may be :memory: storage = sqlite.SQLiteStorage(self.database_path, serialize.PickleSerializer()) self.wal, unapplied_events = wal.restore_from_latest_snapshot( node.state_transition, storage, ) if self.wal.state_manager.current_state is None: block_number = self.chain.block_number() state_change = ActionInitChain( random.Random(), block_number, 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(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) # 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() self.alarm.start() queueids_to_queues = views.get_all_messagequeues(views.state_from_raiden(self)) self.transport.start(self, queueids_to_queues) # Health check needs the transport layer self.start_neighbours_healthcheck() for event in unapplied_events: on_raiden_event(self, event) self.start_event.set()