def connect_request_handler(msg, gossiper):
"""Handles connection request events.
When a connection request message arrives, the requesting node is added
as a peer and a reply message is sent.
Args:
msg (Message): The received connection request message.
gossiper (Node): The local node.
"""
if msg.SenderID != msg.OriginatorID:
logger.error('connection request must originate from peer; %s not %s',
msg.OriginatorID, msg.SenderID)
return
name = msg.Name
if not name:
name = msg.OriginatorID[:8]
orignode = node.Node(address=msg.NetAddress,
identifier=msg.OriginatorID,
name=name)
orignode.Enabled = True
gossiper.add_node(orignode)
reply = ConnectReplyMessage()
reply.InReplyTo = msg.Identifier
gossiper.send_message(reply, msg.OriginatorID)
def topology_reply_handler(msg, gossiper):
"""Handles incoming topology reply messages.
Args:
msg (message.Message): The incoming topology message.
gossiper (Node): The local node.
"""
logger.debug('received reply to probe %s from node %s', msg.InReplyTo[:8],
msg.Name)
global CurrentTopologyRequestID, CurrentTopologyResponseMap
# Because of the multiple paths through the overlay network, the topology
# request can arrive after replies have started to arrive so we initialize
# the current set of requests with the replies that come in
if not CurrentTopologyRequestID:
CurrentTopologyRequestID = msg.InReplyTo
reactor.callLater(TimeToWaitForTopologyProbe,
update_peers_from_topology_probe, gossiper, None)
if msg.InReplyTo != CurrentTopologyRequestID:
logger.debug('reply for a different probe, %s instead of %s',
msg.InReplyTo[:8], CurrentTopologyRequestID[:8])
return
peer = node.Node(address=msg.NetAddress,
identifier=msg.NodeIdentifier,
name=msg.Name)
CurrentTopologyResponseMap[peer] = msg.Peers
def __init__(self,
baseurl,
creator=None,
name='txnclient',
keystring=None,
keyfile=None,
state=None,
tokenstore=None):
super(MarketPlaceClient, self).__init__(baseurl)
self.CreatorID = creator
self.LastTransaction = None
self.CurrentState = state or MarketPlaceState(self.BaseURL)
self.TokenStore = tokenstore
# set up the signing key
if keystring:
logger.debug("set signing key from string\n%s", keystring)
signingkey = signed_object.generate_signing_key(wifstr=keystring)
elif keyfile:
logger.debug("set signing key from file %s", keyfile)
signingkey = signed_object.generate_signing_key(
wifstr=open(keyfile, "r").read())
else:
raise TypeError('expecting valid signing key, none provided')
identifier = signed_object.generate_identifier(signingkey)
self.LocalNode = node.Node(identifier=identifier,
signingkey=signingkey,
name=name)
def __init__(self,
baseurl,
name='IntegerKeyClient',
keystring=None,
keyfile=None,
state=None):
super(IntegerKeyClient, self).__init__(baseurl)
self.LastTransaction = None
self.CurrentState = state or IntegerKeyState(self.BaseURL)
self.CurrentState.fetch()
# set up the signing key
if keystring:
logger.debug("set signing key from string\n%s", keystring)
signingkey = signed_object.generate_signing_key(wifstr=keystring)
elif keyfile:
logger.debug("set signing key from file %s", keyfile)
signingkey = signed_object.generate_signing_key(
wifstr=open(keyfile, "r").read())
else:
raise TypeError('expecting valid signing key, none provided')
identifier = signed_object.generate_identifier(signingkey)
self.LocalNode = node.Node(identifier=identifier,
signingkey=signingkey,
name=name)
def initialize_ledger_object(self):
# Create the local ledger instance
name = self.Config['NodeName']
if name in self.NodeMap:
nd = self.NodeMap[name]
else:
host = self.Config['Host']
port = self.Config['Port']
addr = (socket.gethostbyname(host), port)
signingkey = signed_object.generate_signing_key(
wifstr=self.Config.get('SigningKey'))
identifier = signed_object.generate_identifier(signingkey)
nd = node.Node(address=addr,
identifier=identifier,
signingkey=signingkey,
name=name)
self.initialize_ledger_from_node(nd)
assert self.Ledger
for txnfamily in self.DefaultTransactionFamilies:
txnfamily.register_transaction_types(self.Ledger)
self.Ledger.onNodeDisconnect += self.handle_node_disconnect_event
logger.info("starting ledger %s with id %s at network address %s",
self.Ledger.LocalNode,
self.Ledger.LocalNode.Identifier[:8],
self.Ledger.LocalNode.NetAddress)
def connect_syn_handler(msg, gossiper):
"""Handles connection syn events.
When a connection syn message arrives, the requesting node is added
as a node and an ack message is sent. We do not yet know whether the
requester can hear us, so we'll not set the node to a peer just yet.
Args:
msg (message.Message): The received connection request message.
gossiper (Node): The local node.
"""
if msg.OriginatorID in gossiper.blacklist:
logger.warning('msg originator %s blacklisted', msg.OriginatorID)
return
if msg.SenderID != msg.OriginatorID:
logger.error('connection request must originate from peer; %s not %s',
msg.OriginatorID, msg.SenderID)
return
name = msg.Name
if not name:
name = msg.OriginatorID[:8]
orignode = node.Node(address=msg.NetAddress,
identifier=msg.OriginatorID,
name=name)
gossiper.add_node(orignode)
reply = ConnectAckMessage()
reply.InReplyTo = msg.Identifier
gossiper.send_message(reply, msg.OriginatorID)
def send_to_closest_nodes(ledger, msg, addr, count=1, initialize=True):
"""
Send a message to a set of "close" nodes where close is defined
by the distance metric in EndpointRegistryStore (XOR distance).
If the nodes are not currently in the ledger's node map, then
add them.
"""
storemap = ledger.GlobalStore
epstore = storemap.GetTransactionStore(
EndpointRegistryTransaction.TransactionTypeName)
assert epstore
nodes = epstore.FindClosestNodes(addr, count)
if ledger.LocalNode.Identifier in nodes:
nodes.remove(ledger.LocalNode.Identifier)
if nodes:
# make sure the nodes are all in the node map
for nodeid in nodes:
if nodeid not in ledger.NodeMap:
ninfo = epstore[nodeid]
addr = (ninfo['Host'], int(ninfo['Port']))
ledger.AddNode(
node.Node(address=addr,
identifier=nodeid,
name=ninfo['Name']))
logger.debug('send %s to %s', str(msg), ",".join(nodes))
ledger.MulticastMessage(msg, nodes)
return nodes
def initialize_node_map(self):
self.NodeMap = {}
for nodedata in self.config.get("Nodes", []):
addr = (socket.gethostbyname(nodedata["Host"]), nodedata["Port"])
nd = node.Node(address=addr,
identifier=nodedata["Identifier"],
name=nodedata["NodeName"])
self.NodeMap[nodedata["NodeName"]] = nd
def __init__(self,
base_url,
store_name=None,
name='SawtoothClient',
transaction_type=None,
message_type=None,
keystring=None,
keyfile=None,
disable_client_validation=False):
self._base_url = base_url
self._message_type = message_type
self._transaction_type = transaction_type
# An explicit store name takes precedence over a store name
# implied by the transaction type.
self._store_name = None
if store_name is not None:
self._store_name = store_name.strip('/')
elif transaction_type is not None:
self._store_name = transaction_type.TransactionTypeName.strip('/')
self._communication = _Communication(base_url)
self._last_transaction = None
self._local_node = None
self._update_batch = None
self._disable_client_validation = disable_client_validation
# We only keep current state if we have a store name
self._current_state = None
if self._store_name is not None:
state_type = global_store_manager.KeyValueStore
if transaction_type is not None:
state_type = transaction_type.TransactionStoreType
self._current_state = \
_ClientState(client=self, state_type=state_type)
self.fetch_state()
signing_key = None
if keystring:
LOGGER.debug("set signing key from string\n%s", keystring)
signing_key = signed_object.generate_signing_key(wifstr=keystring)
elif keyfile:
LOGGER.debug("set signing key from file %s", keyfile)
try:
signing_key = signed_object.generate_signing_key(
wifstr=open(keyfile, "r").read().strip())
except IOError as ex:
raise ClientException("Failed to load key file: {}".format(
str(ex)))
if signing_key:
identifier = signed_object.generate_identifier(signing_key)
self._local_node = node.Node(identifier=identifier,
signingkey=signing_key,
name=name)
def random_walk_handler(msg, gossiper):
"""Function called when the gossiper receives a RandomWalkMessage
from one of its peers.
Args:
msg (message.Message): The received random walk message.
gossiper (Node): The local node.
"""
if msg.OriginatorID == gossiper.LocalNode.Identifier:
logger.debug('node %s received its own random walk request, ignore',
gossiper.LocalNode)
return
logger.debug('random walk request %s from %s with ttl %d',
msg.Identifier[:8], msg.Name, msg.TimeToLive)
peers = gossiper.peer_id_list()
# if the source is not already one of our peers, then check to see if we
# should add it to our list
if msg.OriginatorID not in peers:
if len(peers) < random_connections():
logger.debug(
'add connection to node %s based on random walk request %s',
msg.Name, msg.Identifier[:8])
onode = node.Node(address=msg.NetAddress,
identifier=msg.NodeIdentifier,
name=msg.Name)
onode.enable()
send_connection_request(gossiper, onode)
return
# if there is still life in the message, then see if we should forward it
# to another node
if msg.TimeToLive > 0:
# see if we can find a peer other than the peer who forwarded the
# message to us, if not then we'll just drop the request
try:
peers.remove(msg.SenderID)
peers.remove(msg.OriginatorID)
except:
pass
if len(peers) > 0:
peerid = random.choice(peers)
gossiper.send_message(msg, peerid, initialize=False)
def node_from_config(config):
name = config['NodeName']
signing_key = generate_signing_key(wifstr=read_key_file(config['KeyFile']))
listen_info = config.get("Listen")
(gossip_host, gossip_port) = parse_listen_directives(listen_info)['gossip']
# stubbing endpoint address for now
endpoint_addr = (None, None)
nd = node.Node(
address=(socket.gethostbyname(gossip_host), gossip_port),
identifier=generate_identifier(signing_key),
signingkey=signing_key,
name=name,
endpoint_address=endpoint_addr,
)
return nd
def initialize_quorum_map(self, quorum, nodes):
q = quorum
if self.local_node.Name not in q:
logger.fatal("node must be in its own quorum")
self.shutdown()
return
if len(q) < self.VotingQuorumTargetSize:
logger.fatal('insufficient quorum configuration; need %s but " \
"specified %s', len(q), self.VotingQuorumTargetSize)
self.shutdown()
return
self.QuorumMap = {}
for nd_dict in nodes:
if nd_dict["NodeName"] in q:
addr = (socket.gethostbyname(nd_dict["Host"]), nd_dict["Port"])
nd = node.Node(address=addr,
identifier=nd_dict["Identifier"],
name=nd_dict["NodeName"])
nd.HttpPort = nd_dict["HttpPort"]
self.QuorumMap[nd_dict["NodeName"]] = nd
def __init__(self,
base_url,
store_name,
name='SawtoothClient',
transaction_type=None,
message_type=None,
keystring=None,
keyfile=None):
self._transaction_type = transaction_type
self._message_type = message_type
self._base_url = base_url
self._communication = _Communication(base_url)
self._last_transaction = None
self._local_node = None
state_communication = self._communication if base_url else None
self._current_state = _ClientState(
communication=state_communication,
store_name=store_name,
state_type=transaction_type.TransactionStoreType
if transaction_type else global_store_manager.KeyValueStore)
self._update_batch = None
self.fetch_state()
signing_key = None
if keystring:
LOGGER.debug("set signing key from string\n%s", keystring)
signing_key = signed_object.generate_signing_key(wifstr=keystring)
elif keyfile:
LOGGER.debug("set signing key from file %s", keyfile)
try:
signing_key = signed_object.generate_signing_key(
wifstr=open(keyfile, "r").read().strip())
except IOError as ex:
raise ClientException("Failed to load key file: {}".format(
str(ex)))
if signing_key:
identifier = signed_object.generate_identifier(signing_key)
self._local_node = node.Node(identifier=identifier,
signingkey=signing_key,
name=name)
def quorum_advertisement_handler(msg, journal):
"""Function called when the journal receives a
QuorumAdvertisementMessage from one of its peers.
Args:
msg (QuorumAdvertisementMessage): The received quorum
advertisement message.
journal (QuorumJournal): The journal which received the
message.
"""
logger.info("quorum advertisement received from %s", msg.OriginatorID[:8])
if msg.OriginatorID == journal.LocalNode.Identifier:
logger.debug(
'node %s received its own quorum advertisement request, ignore',
journal.LocalNode)
return
onode = node.Node(address=msg.NetAddress,
identifier=msg.Identifier,
name=msg.Name)
journal.add_quorum_node(onode)
# if there is still life in the message, then see if we should forward it
# to another node
if msg.TimeToLive > 0:
# see if we can find a peer other than the peer who forwarded the
# message to us, if not then we'll just drop the request
try:
peers = journal.peer_id_list()
peers.remove(msg.SenderID)
peers.remove(msg.OriginatorID)
except:
pass
if len(peers) > 0:
peerid = random.choice(peers)
journal.send_message(msg, peerid, initialize=False)
def initialize_quorum_map(self, config):
q = config.get('Quorum', [])
if self.LocalNode.Name not in q:
logger.fatal("node must be in its own quorum")
self.shutdown()
return
if len(q) < config.get("VotingQuorumTargetSize"):
logger.fatal(
'insufficient quorum configuration; need %s but " \
"specified %s', len(q),
config.get('VotingQuorumTargetSize', None))
self.shutdown()
return
self.QuorumMap = {}
for nd_dict in config.get("Nodes", []):
if nd_dict["NodeName"] in q:
addr = (socket.gethostbyname(nd_dict["Host"]), nd_dict["Port"])
nd = node.Node(address=addr,
identifier=nd_dict["Identifier"],
name=nd_dict["NodeName"])
nd.HttpPort = nd_dict["HttpPort"]
self.QuorumMap[nd_dict["NodeName"]] = nd
def get_endpoints(self, count, domain='/'):
endpoints = []
eplist = self.LedgerWebClient.get_store(
endpoint_registry.EndpointRegistryTransaction)
if not eplist:
return endpoints
for ep in eplist:
epinfo = self.LedgerWebClient.get_store(
endpoint_registry.EndpointRegistryTransaction, ep)
if epinfo.get('Domain', '/').startswith(domain):
addr = (socket.gethostbyname(epinfo["Host"]), epinfo["Port"])
endpoint = node.Node(address=addr,
identifier=epinfo["NodeIdentifier"],
name=epinfo["Name"])
endpoints.append(endpoint)
logger.info('found %d endpoints', len(endpoints))
if count <= 0:
return endpoints
return random.sample(endpoints, min(count, len(endpoints)))
def _prepare_genesis_transactions(journal):
logger.debug('prepare marketplace transactions for genesis block')
# Set up a random key for generating the genesis objects, we
# "trust" that the key is not kept. At some point this should be
# revisited, suggestions about "burning" the private key
signingkey = signed_object.generate_signing_key()
identifier = signed_object.generate_identifier(signingkey)
signnode = node.Node(identifier=identifier, signingkey=signingkey)
# Create a participant for the global market
txn = MarketPlaceTransaction(
minfo={
'Updates':
[{
'UpdateType': participant_update.Register.UpdateType,
'Name': 'marketplace',
'Description': 'The ROOT participant for the marketplace',
}]
})
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created market participant: %s', txn.Identifier)
lasttxn = txn.Identifier
mktid = txn.Identifier
# Create an asset type for participants
txn = MarketPlaceTransaction(
minfo={
'Updates': [{
'UpdateType': asset_type_update.Register.UpdateType,
'CreatorId': mktid,
'Restricted': False,
'Name': '/asset-type/participant',
'Description': 'Canonical type for participant assets'
}]
})
txn.Dependencies = [lasttxn]
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created participant asset type: %s', txn.Identifier)
lasttxn = txn.Identifier
# Create an asset type for random tokens
txn = MarketPlaceTransaction(
minfo={
'Updates': [{
'UpdateType':
asset_type_update.Register.UpdateType,
'CreatorId':
mktid,
'Restricted':
True,
'Name':
'/asset-type/token',
'Description':
'Canonical type for meaningless tokens that '
'are useful for bootstrapping'
}]
})
txn.Dependencies = [lasttxn]
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created token asset type: %s', txn.Identifier)
lasttxn = txn.Identifier
assettypeid = txn.Identifier
# Create an asset for the tokens
txn = MarketPlaceTransaction(
minfo={
'Updates': [{
'UpdateType': asset_update.Register.UpdateType,
'CreatorId': mktid,
'AssetTypeId': assettypeid,
'Restricted': False,
'Consumable': False,
'Divisible': False,
'Name': '/asset/token',
'Description': 'Canonical asset for tokens'
}]
})
txn.Dependencies = [lasttxn]
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created token asset: %s', txn.Identifier)
# Create an asset for the validation tokens
txn = MarketPlaceTransaction(
minfo={
'Updates': [{
'UpdateType': asset_update.Register.UpdateType,
'CreatorId': mktid,
'AssetTypeId': assettypeid,
'Restricted': True,
'Consumable': True,
'Divisible': False,
'Name': '/asset/validation-token',
'Description': 'Canonical asset for validation tokens'
}]
})
txn.Dependencies = [lasttxn]
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created validation token asset: %s', txn.Identifier)
def _prepare_genesis_transactions(journal):
logger.debug('prepare marketplace transactions for genesis block')
# Set up a random key for generating the genesis objects, we
# "trust" that the key is not kept. At some point this should be
# revisited, suggestions about "burning" the private key
signingkey = signed_object.generate_signing_key()
identifier = signed_object.generate_identifier(signingkey)
signnode = node.Node(identifier=identifier, signingkey=signingkey)
# Create a participant for the global market
txn = MarketPlaceTransaction()
update = participant_update.Register(txn)
update.Name = 'marketplace'
update.Description = 'The ROOT participant for the marketplace'
txn.Update = update
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created market participant: %s', txn.Identifier)
lasttxn = txn.Identifier
mktid = update.ObjectID
# Create an asset type for participants
txn = MarketPlaceTransaction()
update = asset_type_update.Register(txn)
update.CreatorID = mktid
# anyone can create participant assets for themselves
update.Restricted = False
update.Name = '/asset-type/participant'
update.Description = 'Canonical type for participant assets'
txn.Update = update
txn.Dependencies = [lasttxn]
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created participant asset type: %s', txn.Identifier)
lasttxn = txn.Identifier
assettypeid = update.ObjectID
# Create an asset type for random tokens
txn = MarketPlaceTransaction()
update = asset_type_update.Register(txn)
update.CreatorID = mktid
update.Restricted = True # there is only one asset based on the token type
update.Name = '/asset-type/token'
update.Description = 'Canonical type for meaningless tokens that are ' \
'very useful for bootstrapping'
txn.Update = update
txn.Dependencies = [lasttxn]
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created token asset type: %s', txn.Identifier)
lasttxn = txn.Identifier
assettypeid = update.ObjectID
# Create an asset for the tokens
txn = MarketPlaceTransaction()
update = asset_update.Register(txn)
update.CreatorID = mktid
update.AssetTypeID = assettypeid
# anyone can create holdings with token instances
update.Restricted = False
# and these are infinitely replaceable
update.Consumable = False
update.Divisible = False
update.Name = '/asset/token'
update.Description = 'Canonical asset for tokens'
txn.Update = update
txn.Dependencies = [lasttxn]
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created token asset: %s', txn.Identifier)
# Create an asset for the validation tokens
txn = MarketPlaceTransaction()
update = asset_update.Register(txn)
update.CreatorID = mktid
update.AssetTypeID = assettypeid
update.Restricted = True # these assets are only created by the market
update.Consumable = True
update.Divisible = False
update.Name = '/asset/validation-token'
update.Description = 'Canonical asset for validation tokens'
txn.Update = update
txn.Dependencies = [lasttxn]
txn.sign_from_node(signnode)
journal.add_pending_transaction(txn)
logger.info('Created validation token asset: %s', txn.Identifier)
def _endpoint_info_to_node(epinfo):
addr = (socket.gethostbyname(epinfo["Host"]), epinfo["Port"])
nd = node.Node(address=addr,
identifier=epinfo["NodeIdentifier"],
name=epinfo["Name"])
return nd
def parse_networking_info(config):
'''
Provides a DRY location for parsing a validator's intended network
interface specifications from that validator's configuration
Args:
config: (dict) - fully resolved configuration dictionary (c.f.
sawtooth.Config)
Returns:
(nd, http_port): an ordered pair, where:
nd: (gossip.Node)
http_port: (int) or (None)
'''
# Parse the listen directives from the configuration so
# we know what to bind gossip protocol to
listen_info = config.get("Listen")
listen_directives = parse_listen_directives(listen_info)
# If the gossip listen address is 0.0.0.0, then there must be
# an Endpoint.Host entry as we don't know what to put in the
# endpoint registry otherwise.
if listen_directives['gossip'].host == '0.0.0.0' and \
('Endpoint' not in config or
'Port' not in config['Endpoint']):
raise Exception('gossip listen address is 0.0.0.0, but endpoint host '
'missing from configuration')
gossip_host = listen_directives['gossip'].host
gossip_port = listen_directives['gossip'].port
# The endpoint host/port and HTTP port come from the listen data, but
# can be overridden by the configuration.
endpoint_host = gossip_host
endpoint_port = gossip_port
endpoint_http_port = None
if 'http' in listen_directives:
endpoint_http_port = listen_directives['http'].port
# See if we need to override the endpoint data
endpoint_cfg = config.get('Endpoint', None)
if endpoint_cfg is not None:
if 'Host' in endpoint_cfg:
endpoint_host = endpoint_cfg['Host']
if 'Port' in endpoint_cfg:
endpoint_port = int(endpoint_cfg['Port'])
if 'HttpPort' in endpoint_cfg:
endpoint_http_port = int(endpoint_cfg['HttpPort'])
# Finally, if the endpoint host is 'localhost', we need to convert it
# because to another host, obviously 'localhost' won't mean "us"
if endpoint_host == 'localhost':
endpoint_host = socket.gethostbyname(endpoint_host)
name = config['NodeName']
addr = (socket.gethostbyname(gossip_host), gossip_port)
endpoint_addr = (endpoint_host, endpoint_port)
signingkey = signed_object.generate_signing_key(
wifstr=config.get('SigningKey'))
identifier = signed_object.generate_identifier(signingkey)
nd = node.Node(address=addr,
identifier=identifier,
signingkey=signingkey,
name=name,
endpoint_address=endpoint_addr)
return (nd, endpoint_http_port)