def main(args):
btc = BitcoinClient()
tmp_address = btc.validate_address(btc.get_new_address())
print "fetching charter: %s" % CHARTER_URL
charter = fetch_charter(CHARTER_URL)
client_pubkey = tmp_address['pubkey']
oracle_pubkeys = []
for o in charter['nodes']:
# print json.dumps(o)
oracle_pubkeys.append(o['pubkey'])
min_sigs = int(ceil(float(len(oracle_pubkeys)) / 2))
print "number of nodes: %i" % len(charter['nodes'])
print "required signatures: %i" % min_sigs
sum_fees_satoshi = 0
for o in charter['nodes']:
sum_fees_satoshi += Decimal(o['fee']) * 100000000
sum_fees_satoshi += Decimal(charter['org_fee']) * 100000000
key_list = [client_pubkey] + oracle_pubkeys
response = btc.create_multisig_address(min_sigs, key_list)
print ""
print "1. wire the funds to %s" % response['address']
print " oracle & org fees: %i satoshi (as detailed in %s)" % (
sum_fees_satoshi, CHARTER_URL)
print " miners fee: %i satoshi (see MINERS_FEE in src/client/main.py if you want to lower it)" % MINERS_FEE
print "2. wait for transaction to get any confirmations"
print "3. run:"
print "%s main2 %s <locktime_minutes> <return_address>" % (START_COMMAND,
client_pubkey)
def main(args):
btc = BitcoinClient()
tmp_address = btc.validate_address(btc.get_new_address())
print "fetching charter: %s" % CHARTER_URL
charter = fetch_charter(CHARTER_URL)
client_pubkey = tmp_address['pubkey']
oracle_pubkeys = []
for o in charter['nodes']:
# print json.dumps(o)
oracle_pubkeys.append(o['pubkey'])
min_sigs = int(ceil(float(len(oracle_pubkeys))/2))
print "number of nodes: %i" % len(charter['nodes'])
print "required signatures: %i" % min_sigs
sum_fees_satoshi = 0
for o in charter['nodes']:
sum_fees_satoshi += Decimal(o['fee'])*100000000
sum_fees_satoshi += Decimal(charter['org_fee'])*100000000
key_list = [client_pubkey] + oracle_pubkeys
response = btc.create_multisig_address(min_sigs, key_list)
print ""
print "1. wire the funds to %s" % response['address']
print " oracle & org fees: %i satoshi (as detailed in %s)" % (sum_fees_satoshi , CHARTER_URL)
print " miners fee: %i satoshi (see MINERS_FEE in src/client/main.py if you want to lower it)" % MINERS_FEE
print "2. wait for transaction to get any confirmations"
print "3. run:"
print "%s main2 %s <locktime_minutes> <return_address>" % ( START_COMMAND, client_pubkey )
def __init__(self):
self.communication = OracleCommunication()
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
def tx_info(args):
tx = args[0]
btc = BitcoinClient()
prevtxs = '[{"redeemScript": "52210281cf9fa9241f0a9799f27a4d5d60cff74f30eed1d536bf7a72d3dec936c151632102e8e22190b0adfefd0962c6332e74ab68831d56d0bfc2b01b32beccd56e3ef6f021035ff60e6745093b9bcbae93082e1c50ca5b3fcf8bcd186a46da46ded5132530522103a9bd3bfbd9f9b1719d3ecad8658796dc5e778177d77145b5c37247eb3060861854ae", "txid": "10a3ab54e1e19701fcb86c7725621b5b1b26415f94363de35a493ba9ca502b15", "vout": 0, "scriptPubKey": "a914a37ce66d7065157037e90ca4d4b4a20d8d865a2687"}]'
prevtxs = json.loads(prevtxs)
pprint.pprint(btc.decode_raw_transaction(tx))
pprint.pprint(btc.signatures_count(tx, prevtxs))
pprint.pprint(btc.signatures(tx, prevtxs))
def tx_info(args):
tx = args[0]
btc = BitcoinClient()
prevtxs = '[{"redeemScript": "52210281cf9fa9241f0a9799f27a4d5d60cff74f30eed1d536bf7a72d3dec936c151632102e8e22190b0adfefd0962c6332e74ab68831d56d0bfc2b01b32beccd56e3ef6f021035ff60e6745093b9bcbae93082e1c50ca5b3fcf8bcd186a46da46ded5132530522103a9bd3bfbd9f9b1719d3ecad8658796dc5e778177d77145b5c37247eb3060861854ae", "txid": "10a3ab54e1e19701fcb86c7725621b5b1b26415f94363de35a493ba9ca502b15", "vout": 0, "scriptPubKey": "a914a37ce66d7065157037e90ca4d4b4a20d8d865a2687"}]'
prevtxs = json.loads(prevtxs)
pprint.pprint( btc.decode_raw_transaction(tx))
pprint.pprint (btc.signatures_count(tx, prevtxs))
pprint.pprint (btc.signatures(tx, prevtxs))
def __init__(self):
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
last_received = self.kv.get_by_section_key('fastcast', 'last_epoch')
if not last_received:
self.kv.store('fastcast', 'last_epoch', {'last': 0})
self.set_fastcast_address()
def __init__(self):
self.communication = MockBitmessageCommunication()
self.db = MockOracleDb()
self.btc = BitcoinClient(account=TEST_ACCOUNT)
self.evaluator = Evaluator()
self.task_queue = TaskQueue(self.db)
self.handlers = defaultdict(lambda: None, handlers)
def __init__(self):
self.communication = OracleCommunication()
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
def __init__(self):
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
last_received = self.kv.get_by_section_key('fastcast', 'last_epoch')
if not last_received:
self.kv.store('fastcast', 'last_epoch', {'last': 0})
if not self.kv.exists('fastcast', 'address'):
pub, priv = generateKey()
self.kv.store('fastcast', 'address', {"pub": pub, "priv": priv})
logging.info('fastcast pubkey: %r' %
self.kv.get_by_section_key('fastcast', 'address')['pub'])
def __init__(self):
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
last_received = self.kv.get_by_section_key('fastcast', 'last_epoch')
if not last_received:
self.kv.store('fastcast', 'last_epoch', {'last':0})
self.set_fastcast_address()
def __init__(self):
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
last_received = self.kv.get_by_section_key('fastcast', 'last_epoch')
if not last_received:
self.kv.store('fastcast', 'last_epoch', {'last':0})
if not self.kv.exists('fastcast', 'address'):
pub, priv = generateKey()
self.kv.store('fastcast', 'address', {"pub": pub, "priv": priv})
logging.info('fastcast pubkey: %r' % self.kv.get_by_section_key('fastcast', 'address')['pub'])
class Oracle:
def __init__(self):
self.communication = OracleCommunication()
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
def handle_request(self, request):
logging.debug(request)
operation, message = request
if not operation in self.handlers:
logging.debug("operation {} not supported".format(operation))
return
handler = self.handlers[operation]
try:
message.message = json.loads(message.message)
if 'message_id' in message.message:
logging.info('parsing message_id: %r' % message.message['message_id'])
handler(self).handle_request(message)
except:
logging.debug(message)
logging.exception('error handling the request')
# Save object to database for future reference
db_class = self.db.operations[operation]
if db_class:
db_class(self.db).save(message)
def handle_task(self, task):
operation = task['operation']
assert(operation in self.handlers)
handler = self.handlers[operation]
handler(self).handle_task(task)
operation = task['operation']
handler = self.handlers[operation]
if handler:
if handler(self).valid_task(task):
return task
else:
logging.debug('Task marked as invalid by handler')
self.task_queue.done(task)
return None
else:
logging.debug("Task has invalid operation")
self.task_queue.done(task)
return None
def is_fee_sufficient(self, addr, fee):
if addr != self.oracle_address:
return False
if fee < Decimal(ORACLE_FEE):
return False
return True
def run(self):
if not ORACLE_ADDRESS:
self.oracle_address = self.kv.get_by_section_key('config','ORACLE_ADDRESS')
if self.oracle_address is None:
new_addr = self.btc.server.getnewaddress()
self.oracle_address = new_addr
logging.error("created a new address: '%s'" % new_addr)
self.kv.store('config','ORACLE_ADDRESS',new_addr)
else:
self.oracle_address = ORACLE_ADDRESS
logging.info("my multisig address is %s" % self.oracle_address)
logging.info( "my pubkey: %r" % self.btc.validate_address(self.oracle_address)['pubkey'] )
logging.debug("awaiting requests...")
count = 0
while True:
# Proceed all requests
requests = self.communication.get_new_requests()
if len(requests) == 0:
count = count + 1
if count > 30:
logging.debug("{0} new requests".format(len(requests)))
count = 0
else:
logging.debug("{0} new requests".format(len(requests)))
for request in requests:
self.handle_request(request)
self.communication.mark_request_done(request)
task = self.task_queue.get_oldest_task()
while task is not None:
self.handle_task(task)
self.task_queue.done(task)
task = self.task_queue.get_oldest_task()
time.sleep(1)
def pricecheck_create(args):
if len(args)<5:
print "USAGE: `%s pricecheck_create <pubkey_once> <locktime_minutes> <return_address_if_greater> <return_address_if_smaller> <value>`" % START_COMMAND
print "- run `%s main` to obtain pubkey_once" % START_COMMAND
print "- keep in mind that this is alpha, don't expect oracles to run properly for any extended periods of time"
return
btc = BitcoinClient()
request = {}
client_pubkey = args[0]
request['locktime'] = time.time() + int(args[1])*60
request['return_if_greater'] = args[2]
request['return_if_lesser'] = args[3]
request['price'] = float(args[4])
print "fetching charter url" # hopefully it didn't check between running main1 and main2
charter = fetch_charter(CHARTER_URL)
oracle_pubkeys = []
oracle_fees = {}
oracle_bms = []
for o in charter['nodes']:
oracle_pubkeys.append(o['pubkey'])
oracle_fees[o['address']] = o['fee']
oracle_bms.append(o['bm'])
oracle_fees[charter['org_address']] = charter['org_fee']
min_sigs = int(ceil(float(len(oracle_pubkeys))/2))
key_list = [client_pubkey] + oracle_pubkeys
response = btc.create_multisig_address(min_sigs, key_list)
msig_addr = response['address'] # we're using this as an identificator
redeemScript = response['redeemScript']
request['message_id'] = "%s-%s" % (msig_addr, str(randrange(1000000000,9000000000)))
request['pubkey_list'] = key_list
request['miners_fee_satoshi'] = MINERS_FEE
print "fetching transactions incoming to %s ..." % msig_addr
# for production purposes you might want to fetch the data using bitcoind, but that's expensive
address_json = liburl_wrapper.safe_read("https://blockchain.info/address/%s?format=json" % msig_addr, timeout_time=10)
try:
address_history = json.loads(address_json)
except:
print "blockchain.info problem"
print address_json
return
prevtxs = []
sum_satoshi = 0
for tx in address_history['txs']:
outputs = []
if 'out' in tx:
outputs = outputs + tx['out']
if 'outputs' in tx:
outputs = outputs + tx['outputs']
for vout in tx['out']:
print vout
if vout['addr'] == msig_addr:
prevtx = {
'scriptPubKey' : vout['script'],
'vout': vout['n'],
'txid': tx['hash'],
'redeemScript': redeemScript,
}
sum_satoshi += vout['value']
prevtxs.append(prevtx)
if len(prevtxs) == 0:
print "ERROR: couldn't find transactions sending money to %s" % msig_addr
return
request['prevtxs'] = prevtxs
request['outputs'] = oracle_fees
request["req_sigs"] = min_sigs
request['operation'] = 'pricecheck_create'
request['sum_satoshi'] = sum_satoshi
bm = BitmessageClient()
print "sending: %r" % json.dumps(request)
print bm.chan_address
request_content = json.dumps(request)
print bm.send_message(bm.chan_address, request['operation'], request_content)
def main2(args):
if len(args) < 3:
print "USAGE: `%s main2 <pubkey_once> <locktime_minutes> <return_address>`" % START_COMMAND
print "- run `%s main` to obtain pubkey_once" % START_COMMAND
print "- keep in mind that this is alpha, don't expect oracles to run properly for any extended periods of time"
return
btc = BitcoinClient()
request = {}
client_pubkey = args[0]
request['locktime'] = time.time() + int(args[1]) * 60
request['return_address'] = args[2]
print "fetching charter url" # hopefully it didn't check between running main1 and main2
charter = fetch_charter(CHARTER_URL)
oracle_pubkeys = []
oracle_fees = {}
oracle_bms = []
for o in charter['nodes']:
oracle_pubkeys.append(o['pubkey'])
oracle_fees[o['address']] = o['fee']
oracle_bms.append(o['bm'])
oracle_fees[charter['org_address']] = charter['org_fee']
min_sigs = int(ceil(float(len(oracle_pubkeys)) / 2))
key_list = [client_pubkey] + oracle_pubkeys
response = btc.create_multisig_address(min_sigs, key_list)
msig_addr = response['address'] # we're using this as an identificator
redeemScript = response['redeemScript']
request['message_id'] = "%s-%s" % (msig_addr,
str(randrange(1000000000, 9000000000)))
request['pubkey_list'] = key_list
request['miners_fee_satoshi'] = MINERS_FEE
print "fetching transactions incoming to %s ..." % msig_addr
# for production purposes you might want to fetch the data using bitcoind, but that's expensive
address_json = liburl_wrapper.safe_read(
"https://blockchain.info/address/%s?format=json" % msig_addr,
timeout_time=10)
try:
address_history = json.loads(address_json)
except:
print "blockchain.info problem"
print address_json
return
prevtxs = []
sum_satoshi = 0
for tx in address_history['txs']:
outputs = []
if 'out' in tx:
outputs = outputs + tx['out']
if 'outputs' in tx:
outputs = outputs + tx['outputs']
for vout in tx['out']:
print vout
if vout['addr'] == msig_addr:
prevtx = {
'scriptPubKey': vout['script'],
'vout': vout['n'],
'txid': tx['hash'],
'redeemScript': redeemScript,
}
sum_satoshi += vout['value']
prevtxs.append(prevtx)
if len(prevtxs) == 0:
print "ERROR: couldn't find transactions sending money to %s" % msig_addr
return
request['prevtxs'] = prevtxs
request['outputs'] = oracle_fees
request["req_sigs"] = min_sigs
request['operation'] = 'timelock_create'
request['sum_satoshi'] = sum_satoshi
bm = BitmessageClient()
print "sending: %r" % json.dumps(request)
print bm.chan_address
request_content = json.dumps(request)
print bm.send_message(bm.chan_address, request['operation'],
request_content)
print ""
print "Gathering oracle responses. It may take BitMessage 30-60 seconds to deliver a message one way."
print "Although we've seen delays up to half an hour, especially if BitMessage client was just launched."
print ""
oracles_confirmed = 0
while oracle_bms:
messages = bm.get_unread_messages()
print "oracles confirmed: {}".format(oracles_confirmed)
for msg in messages:
if msg.from_address in oracle_bms:
try:
content = json.loads(msg.message)
except:
print msg.message
print 'failed decoding message'
continue
if 'in_reply_to' not in content:
continue
if content['in_reply_to'] == request['message_id']:
print "[%r][%r] %r" % (msg.subject, msg.from_address,
msg.message)
print ""
oracle_bms.remove(msg.from_address)
if oracle_bms: #if still awaiting replies from some oracles
time.sleep(10)
def main2(args):
if len(args) < 3:
print "USAGE: `%s main2 <pubkey_once> <locktime_minutes> <return_address>`" % START_COMMAND
print "- run `%s main` to obtain pubkey_once" % START_COMMAND
print "- keep in mind that this is alpha, don't expect oracles to run properly for any extended periods of time"
return
btc = BitcoinClient()
request = {}
client_pubkey = args[0]
request['locktime'] = time.time() + int(args[1]) * 60
request['return_address'] = args[2]
print "fetching charter url" # hopefully it didn't check between running main1 and main2
charter = fetch_charter(CHARTER_URL)
oracle_pubkeys = []
oracle_fees = {}
oracle_bms = []
for o in charter['nodes']:
oracle_pubkeys.append(o['pubkey'])
oracle_fees[o['address']] = o['fee']
#oracle_bms.append(o['bm'])
oracle_fees[charter['org_address']] = charter['org_fee']
min_sigs = int(ceil(float(len(oracle_pubkeys)) / 2))
key_list = [client_pubkey] + oracle_pubkeys
response = btc.create_multisig_address(min_sigs, key_list)
msig_addr = response['address'] # we're using this as an identificator
redeemScript = response['redeemScript']
request['message_id'] = "%s-%s" % (msig_addr,
str(randrange(1000000000, 9000000000)))
request['pubkey_list'] = key_list
request['miners_fee_satoshi'] = MINERS_FEE
print "fetching transactions incoming to %s ..." % msig_addr
import requests
# for production purposes you might want to fetch the data using bitcoind, but that's expensive
print "get"
address_json = requests.get(
"https://blockchain.info/address/%s?format=json" % msig_addr).text
#try:
print address_json
address_history = json.loads(address_json)
#except:
#print "blockchain.info problem"
#print address_json
#return
prevtxs = []
sum_satoshi = 0
for tx in address_history['txs']:
outputs = []
if 'out' in tx:
outputs = outputs + tx['out']
if 'outputs' in tx:
outputs = outputs + tx['outputs']
for vout in tx['out']:
print vout
if vout['addr'] == msig_addr:
prevtx = {
'scriptPubKey': vout['script'],
'vout': vout['n'],
'txid': tx['hash'],
'redeemScript': redeemScript,
}
sum_satoshi += vout['value']
prevtxs.append(prevtx)
if len(prevtxs) == 0:
print "ERROR: couldn't find transactions sending money to %s" % msig_addr
# return
request['prevtxs'] = prevtxs
request['outputs'] = oracle_fees
request["req_sigs"] = min_sigs
request['operation'] = 'timelock_create'
request['sum_satoshi'] = sum_satoshi
pub, priv = generateKey()
meta_request = {}
meta_request['source'] = pub
meta_request['channel'] = 0
meta_request['signature'] = 0
meta_request['body'] = json.dumps(request)
print sendMessage(constructMessage(priv, **meta_request))
def main2(args):
if len(args)<3:
print "USAGE: `%s main2 <pubkey_once> <locktime_minutes> <return_address>`" % START_COMMAND
print "- run `%s main` to obtain pubkey_once" % START_COMMAND
print "- keep in mind that this is alpha, don't expect oracles to run properly for any extended periods of time"
return
btc = BitcoinClient()
request = {}
client_pubkey = args[0]
request['locktime'] = time.time() + int(args[1])*60
request['return_address'] = args[2]
print "fetching charter url" # hopefully it didn't check between running main1 and main2
charter = fetch_charter(CHARTER_URL)
oracle_pubkeys = []
oracle_fees = {}
oracle_bms = []
for o in charter['nodes']:
oracle_pubkeys.append(o['pubkey'])
oracle_fees[o['address']] = o['fee']
oracle_bms.append(o['bm'])
oracle_fees[charter['org_address']] = charter['org_fee']
min_sigs = int(ceil(float(len(oracle_pubkeys))/2))
key_list = [client_pubkey] + oracle_pubkeys
response = btc.create_multisig_address(min_sigs, key_list)
msig_addr = response['address'] # we're using this as an identificator
redeemScript = response['redeemScript']
request['message_id'] = "%s-%s" % (msig_addr, str(randrange(1000000000,9000000000)))
request['pubkey_list'] = key_list
request['miners_fee_satoshi'] = MINERS_FEE
print "fetching transactions incoming to %s ..." % msig_addr
# for production purposes you might want to fetch the data using bitcoind, but that's expensive
address_json = liburl_wrapper.safe_read("https://blockchain.info/address/%s?format=json" % msig_addr, timeout_time=10)
try:
address_history = json.loads(address_json)
except:
print "blockchain.info problem"
print address_json
return
prevtxs = []
sum_satoshi = 0
for tx in address_history['txs']:
outputs = []
if 'out' in tx:
outputs = outputs + tx['out']
if 'outputs' in tx:
outputs = outputs + tx['outputs']
for vout in tx['out']:
print vout
if vout['addr'] == msig_addr:
prevtx = {
'scriptPubKey' : vout['script'],
'vout': vout['n'],
'txid': tx['hash'],
'redeemScript': redeemScript,
}
sum_satoshi += vout['value']
prevtxs.append(prevtx)
if len(prevtxs) == 0:
print "ERROR: couldn't find transactions sending money to %s" % msig_addr
return
request['prevtxs'] = prevtxs
request['outputs'] = oracle_fees
request["req_sigs"] = min_sigs
request['operation'] = 'timelock_create'
request['sum_satoshi'] = sum_satoshi
bm = BitmessageClient()
print "sending: %r" % json.dumps(request)
print bm.chan_address
request_content = json.dumps(request)
print bm.send_message(bm.chan_address, request['operation'], request_content)
print ""
print "Gathering oracle responses. It may take BitMessage 30-60 seconds to deliver a message one way."
print "Although we've seen delays up to half an hour, especially if BitMessage client was just launched."
print ""
oracles_confirmed = 0
while oracle_bms:
messages = bm.get_unread_messages()
print "oracles confirmed: {}".format(oracles_confirmed)
for msg in messages:
if msg.from_address in oracle_bms:
try:
content = json.loads(msg.message)
except:
print msg.message
print 'failed decoding message'
continue
if 'in_reply_to' not in content:
continue
if content['in_reply_to'] == request['message_id']:
print "[%r][%r] %r" % (msg.subject, msg.from_address, msg.message)
print ""
oracle_bms.remove(msg.from_address)
if oracle_bms: #if still awaiting replies from some oracles
time.sleep(10)
class Oracle:
def __init__(self):
self.communication = OracleCommunication()
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
def handle_request(self, request):
logging.debug(request)
operation, message = request
if not operation in self.handlers:
logging.debug("operation {} not supported".format(operation))
return
handler = self.handlers[operation]
try:
message.message = json.loads(message.message)
if 'message_id' in message.message:
logging.info('parsing message_id: %r' %
message.message['message_id'])
handler(self).handle_request(message)
except:
logging.debug(message)
logging.exception('error handling the request')
# Save object to database for future reference
db_class = self.db.operations[operation]
if db_class:
db_class(self.db).save(message)
def handle_task(self, task):
operation = task['operation']
assert (operation in self.handlers)
handler = self.handlers[operation]
handler(self).handle_task(task)
operation = task['operation']
handler = self.handlers[operation]
if handler:
if handler(self).valid_task(task):
return task
else:
logging.debug('Task marked as invalid by handler')
self.task_queue.done(task)
return None
else:
logging.debug("Task has invalid operation")
self.task_queue.done(task)
return None
def is_fee_sufficient(self, addr, fee):
if addr != self.oracle_address:
return False
if fee < Decimal(ORACLE_FEE):
return False
return True
def run(self):
if not ORACLE_ADDRESS:
self.oracle_address = self.kv.get_by_section_key(
'config', 'ORACLE_ADDRESS')
if self.oracle_address is None:
new_addr = self.btc.server.getnewaddress()
self.oracle_address = new_addr
logging.error("created a new address: '%s'" % new_addr)
self.kv.store('config', 'ORACLE_ADDRESS', new_addr)
else:
self.oracle_address = ORACLE_ADDRESS
logging.info("my multisig address is %s" % self.oracle_address)
logging.info("my pubkey: %r" %
self.btc.validate_address(self.oracle_address)['pubkey'])
logging.debug("awaiting requests...")
count = 0
while True:
# Proceed all requests
requests = self.communication.get_new_requests()
if len(requests) == 0:
count = count + 1
if count > 30:
logging.debug("{0} new requests".format(len(requests)))
count = 0
else:
logging.debug("{0} new requests".format(len(requests)))
for request in requests:
self.handle_request(request)
self.communication.mark_request_done(request)
task = self.task_queue.get_oldest_task()
while task is not None:
self.handle_task(task)
self.task_queue.done(task)
task = self.task_queue.get_oldest_task()
time.sleep(1)
class Oracle:
def __init__(self):
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
last_received = self.kv.get_by_section_key('fastcast', 'last_epoch')
if not last_received:
self.kv.store('fastcast', 'last_epoch', {'last':0})
self.set_fastcast_address()
def set_fastcast_address(self):
if self.kv.exists('fastcast', 'address'):
return
pub, priv = generateKey()
self.kv.store('fastcast', 'address', {"pub": pub, "priv": priv})
def broadcast_with_fastcast(self, message):
data = self.kv.get_by_section_key('fastcast', 'address')
pub = data['pub']
priv = data['priv']
broadcastMessage(message, pub, priv)
def handle_request(self, request):
logging.debug(request)
operation, message = request
if not operation in self.handlers:
logging.debug("operation {} not supported".format(operation))
return
handler = self.handlers[operation]
try:
message.message = json.loads(message.message)
if 'message_id' in message.message:
logging.info('parsing message_id: %r' % message.message['message_id'])
handler(self).handle_request(message)
except:
logging.debug(message)
logging.exception('error handling the request')
# Save object to database for future reference
db_class = self.db.operations[operation]
if db_class:
db_class(self.db).save(message)
def get_last_block_number(self):
val = KeyValue(self.db).get_by_section_key('blocks', 'last_block_number')
if not val:
return 0
last_block = val['last_block']
return last_block
def set_last_block(self):
last_block_number = self.btc.get_block_count()
# We need to satisfy a condition on looking only for blocks with at
# least CONFIRMATIONS of confirmations
satisfied = False
while not satisfied:
block_hash = self.btc.get_block_hash(last_block_number)
block = self.btc.get_block(block_hash)
if block['confirmations'] >= CONFIRMATIONS:
satisfied = True
else:
last_block_number -= 1
KeyValue(self.db).store('blocks', 'last_block_number', {'last_block':last_block_number})
return last_block_number
def get_new_block(self):
last_block_number = self.get_last_block_number()
if last_block_number == 0:
last_block_number = self.set_last_block()
newer_block = last_block_number + 1
block_hash = self.btc.get_block_hash(newer_block)
if not block_hash:
return None
block = self.btc.get_block(block_hash)
# We are waiting for enough confirmations
if block['confirmations'] < CONFIRMATIONS:
return None
logging.info("New block {}".format(newer_block))
return block
def handle_task(self, task):
operation = task['operation']
assert(operation in self.handlers)
handler = self.handlers[operation]
handler(self).handle_task(task)
operation = task['operation']
handler = self.handlers[operation]
if handler:
if handler(self).valid_task(task):
return task
else:
logging.debug('Task marked as invalid by handler')
self.task_queue.done(task)
return None
else:
logging.debug("Task has invalid operation")
self.task_queue.done(task)
return None
def is_fee_sufficient(self, addr, fee):
if addr != self.oracle_address:
return False
if fee < Decimal(ORACLE_FEE):
return False
return True
def prepare_request(self, request):
try:
fmsg = FastcastMessage(request)
except:
raise FastcastProtocolError()
msg_body = json.loads(fmsg.message)
if not 'operation' in msg_body:
raise MissingOperationError()
operation = msg_body['operation']
return (operation, fmsg)
def filter_requests(self, old_req):
new_req = []
last_received = self.kv.get_by_section_key('fastcast','last_epoch')['last']
max_received = last_received
for r in old_req:
received_epoch = int(r['epoch'])
if received_epoch > last_received:
new_req.append(r)
max_received = max(max_received, received_epoch)
if len(new_req) > 0:
self.kv.update('fastcast', 'last_epoch', {'last':max_received})
return new_req
def run(self):
if not ORACLE_ADDRESS:
self.oracle_address = self.kv.get_by_section_key('config','ORACLE_ADDRESS')
if self.oracle_address is None:
new_addr = self.btc.server.getnewaddress()
self.oracle_address = new_addr
logging.error("created a new address: '%s'" % new_addr)
self.kv.store('config','ORACLE_ADDRESS',new_addr)
else:
self.oracle_address = ORACLE_ADDRESS
logging.info("my multisig address is %s" % self.oracle_address)
logging.info( "my pubkey: %r" % self.btc.validate_address(self.oracle_address)['pubkey'] )
while True:
# Proceed all requests
requests = getMessages()
requests = requests['results']
requests = self.filter_requests(requests)
for prev_request in requests:
try:
request = self.prepare_request(prev_request)
except MissingOperationError:
logging.info('message doesn\'t have operation field, invalid')
logging.info(prev_request)
continue
except FastcastProtocolError:
logging.info('message does not have all required fields')
logging.info(prev_request)
continue
self.handle_request(request)
task = self.task_queue.get_oldest_task()
while task is not None:
self.handle_task(task)
self.task_queue.done(task)
task = self.task_queue.get_oldest_task()
new_block = self.get_new_block()
if new_block:
handlers = op_handlers.itervalues()
# Every available handler should get a chance to handle new block
for h in handlers:
h(self).handle_new_block(new_block)
KeyValue(self.db).update('blocks', 'last_block_number', {'last_block':new_block['height']})
time.sleep(1)
class Oracle:
def __init__(self):
self.db = OracleDb()
self.btc = BitcoinClient()
self.kv = KeyValue(self.db)
self.task_queue = TaskQueue(self.db)
self.handlers = op_handlers
self.signer = TransactionSigner(self)
last_received = self.kv.get_by_section_key('fastcast', 'last_epoch')
if not last_received:
self.kv.store('fastcast', 'last_epoch', {'last': 0})
if not self.kv.exists('fastcast', 'address'):
pub, priv = generateKey()
self.kv.store('fastcast', 'address', {"pub": pub, "priv": priv})
logging.info('fastcast pubkey: %r' %
self.kv.get_by_section_key('fastcast', 'address')['pub'])
def broadcast_with_fastcast(self, message):
data = self.kv.get_by_section_key('fastcast', 'address')
pub = data['pub']
priv = data['priv']
broadcastMessage(message, pub, priv)
def handle_request(self, request):
logging.debug(request)
operation, message = request
if not operation in self.handlers:
logging.debug("operation {} not supported".format(operation))
return
handler = self.handlers[operation]
try:
message.message = json.loads(message.message)
if 'message_id' in message.message:
logging.info('parsing message_id: %r' %
message.message['message_id'])
handler(self).handle_request(message)
except:
logging.debug(message)
logging.exception('error handling the request')
# Save object to database for future reference
db_class = self.db.operations[operation]
if db_class:
db_class(self.db).save(message)
def get_last_block_number(self):
val = KeyValue(self.db).get_by_section_key('blocks',
'last_block_number')
if not val:
return 0
last_block = val['last_block']
return last_block
def set_last_block(self):
last_block_number = self.btc.get_block_count()
# We need to satisfy a condition on looking only for blocks with at
# least CONFIRMATIONS of confirmations
satisfied = False
while not satisfied:
block_hash = self.btc.get_block_hash(last_block_number)
block = self.btc.get_block(block_hash)
if block['confirmations'] >= CONFIRMATIONS:
satisfied = True
else:
last_block_number -= 1
print "not enough confirmations - checking previous block %r" % last_block_number
KeyValue(self.db).store('blocks', 'last_block_number',
{'last_block': last_block_number})
return last_block_number
def get_new_block(self):
last_block_number = self.get_last_block_number()
logging.debug("last_block_number: %r" % last_block_number)
if last_block_number == 0:
last_block_number = self.set_last_block()
newer_block = last_block_number + 1
block_hash = self.btc.get_block_hash(newer_block)
logging.info("block hash: %r" % block_hash)
if not block_hash:
return None
block = self.btc.get_block(block_hash)
# We are waiting for enough confirmations
if block['confirmations'] < CONFIRMATIONS:
return None
logging.info("New block {}".format(newer_block))
return block
def handle_task(self, task):
operation = task['operation']
assert (operation in self.handlers)
handler = self.handlers[operation]
handler(self).handle_task(task)
operation = task['operation']
handler = self.handlers[operation]
if handler:
if handler(self).valid_task(task):
return task
else:
logging.debug('Task marked as invalid by handler')
self.task_queue.done(task)
return None
else:
logging.debug("Task has invalid operation")
self.task_queue.done(task)
return None
def is_fee_sufficient(self, addr, fee):
if addr != self.oracle_address:
return False
if fee < Decimal(ORACLE_FEE):
return False
return True
def prepare_request(self, request):
try:
fmsg = FastcastMessage(request)
except:
raise FastcastProtocolError()
msg_body = json.loads(fmsg.message)
if not 'operation' in msg_body:
raise MissingOperationError()
operation = msg_body['operation']
return (operation, fmsg)
def filter_requests(self, old_req):
new_req = []
last_received = self.kv.get_by_section_key('fastcast',
'last_epoch')['last']
max_received = last_received
for r in old_req:
received_epoch = int(r['epoch'])
if received_epoch > last_received:
new_req.append(r)
max_received = max(max_received, received_epoch)
if len(new_req) > 0:
self.kv.update('fastcast', 'last_epoch', {'last': max_received})
return new_req
def run(self):
if not ORACLE_ADDRESS:
self.oracle_address = self.kv.get_by_section_key(
'config', 'ORACLE_ADDRESS')
if self.oracle_address is None:
new_addr = self.btc.server.getnewaddress()
self.oracle_address = new_addr
logging.error("created a new address: '%s'" % new_addr)
self.kv.store('config', 'ORACLE_ADDRESS', new_addr)
else:
self.oracle_address = ORACLE_ADDRESS
logging.info("my fee: %r" % ORACLE_FEE)
logging.info("my bitcoin address is %s" % self.oracle_address)
logging.info("my bitcoin pubkey: %r" %
self.btc.validate_address(self.oracle_address)['pubkey'])
while True:
# Proceed all requests
requests = getMessages()
requests = requests['results']
requests = self.filter_requests(requests)
for prev_request in requests:
try:
request = self.prepare_request(prev_request)
except MissingOperationError:
logging.info(
'message doesn\'t have operation field, invalid')
logging.info(prev_request)
continue
except FastcastProtocolError:
logging.info('message does not have all required fields')
logging.info(prev_request)
continue
self.handle_request(request)
task = self.task_queue.get_oldest_task()
while task is not None:
self.handle_task(task)
self.task_queue.done(task)
task = self.task_queue.get_oldest_task()
try:
new_block = self.get_new_block()
except:
new_block = None
logging.exception('problematic block!')
if new_block:
handlers = op_handlers.iteritems()
addresses_per_handler = {}
all_addresses = set()
# Every handler can wait for transactions occuring on some addresses
for name, handler in handlers:
addresses = handler(self).get_observed_addresses()
addresses_per_handler[name] = addresses
for address in addresses:
all_addresses.add(address)
transactions = self.btc.get_transactions_from_block(
new_block, list(all_addresses))
handlers = op_handlers.iteritems()
for name, handler in handlers:
addresses = addresses_per_handler[name]
handler_transactions = []
for address in addresses:
if address in transactions:
handler_transactions.extend(transactions[address])
handler(self).handle_new_transactions(handler_transactions)
KeyValue(self.db).update('blocks', 'last_block_number',
{'last_block': new_block['height']})
time.sleep(10)
