def connect_utxo_provider( utxo_opts ):
"""
Set up and return a UTXO provider client.
"""
global SUPPORTED_UTXO_PROVIDERS
if not utxo_opts.has_key("utxo_provider"):
raise Exception("No UTXO provider given")
utxo_provider = utxo_opts['utxo_provider']
if not utxo_provider in SUPPORTED_UTXO_PROVIDERS:
raise Exception("Unsupported UTXO provider '%s'" % utxo_provider)
if utxo_provider == "chain_com":
return pybitcoin.ChainComClient( utxo_opts['api_key_id'], utxo_opts['api_key_secret'] )
elif utxo_provider == "blockcypher":
return pybitcoin.BlockcypherClient( utxo_opts['api_token'] )
elif utxo_provider == "blockchain_info":
return pybitcoin.BlockchainInfoClient( utxo_opts['api_token'] )
elif utxo_provider == "bitcoind_utxo":
return pybitcoin.BitcoindClient( utxo_opts['rpc_username'], utxo_opts['rpc_password'], use_https=utxo_opts['use_https'], server=utxo_opts['server'], port=utxo_opts['port'], version_byte=utxo_opts['version_byte'] )
elif utxo_provider == "mock_utxo":
# requires blockstack tests to be installed
from ..tests import connect_mock_utxo_provider
return connect_mock_utxo_provider( utxo_opts )
else:
raise Exception("Unrecognized UTXO provider '%s'" % utxo_provider )
def tx_get_unspents(address,
utxo_client,
min_confirmations=TX_MIN_CONFIRMATIONS):
"""
Given an address get unspent outputs (UTXOs)
Return array of UTXOs on success
Raise UTXOException on error
"""
assert utxo_client is not None, "Utxo client is null"
min_confirmations = 1
if utxo_client is None:
utxo_opts = get_bitcoin_regtest_opts()
utxo_client = pybitcoin.BitcoindClient(
utxo_opts['bitcoind_user'],
utxo_opts['bitcoind_passwd'],
use_https=utxo_opts['bitcoind_use_https'],
server=utxo_opts['bitcoind_server'],
port=utxo_opts['bitcoind_port'])
data = pybitcoin.get_unspents(address, utxo_client)
try:
assert type(data) == list, "No UTXO list returned"
for d in data:
assert isinstance(d, dict), 'Invalid UTXO information returned'
assert 'value' in d, 'Missing value in UTXOs from {}'.format(
address)
except AssertionError, ae:
log.exception(ae)
raise
def get_tx_broadcaster():
utxo_opts = get_bitcoin_regtest_opts()
return pybitcoin.BitcoindClient(utxo_opts['rpc_username'],
utxo_opts['rpc_password'],
use_https=utxo_opts['use_https'],
server=utxo_opts['server'],
port=utxo_opts['port'],
version_byte=utxo_opts['version_byte'])
def get_utxo_client():
opts = get_bitcoin_regtest_opts()
utxo_provider = pybitcoin.BitcoindClient(opts.get("bitcoind_user", None), opts.get("bitcoind_passwd"), \
use_https=opts.get("bitcoind_use_https", None),server=opts.get("bitcoind_server", None),port=opts.get("bitcoind_port"), version_byte=virtualchain.version_byte)
return utxo_provider