def get_utxo_provider_client():
"""
Get or instantiate our blockchain UTXO provider's client (i.e. chain.com; falling back to bitcoind otherwise).
Return None if we were unable to connect
"""
global blockchain_client
global chaincom_opts
global blockchain_opts
# acquire configuration (which we should already have)
bitcoin_opts, chaincom_opts = configure( interactive=False )
chaincom_id = chaincom_opts['api_key_id']
chaincom_secret = chaincom_opts['api_key_secret']
try:
blockchain_client = pybitcoin.ChainComClient( chaincom_id, chaincom_secret )
return blockchain_client
except Exception, e:
log.exception(e)
# try bitcoind...
try:
blockchain_client = BitcoindClient( blockchain_opts['bitcoind_user'], blockchain_opts['bitcoind_passwd'],
server=blockchain_opts['bitcoind_server'], port=str(blockchain_opts['bitcoind_port']), use_https=blockchain_opts.get('bitcoind_use_https', False) )
return blockchain_client
except Exception, e:
log.exception(e)
return None
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 )
privkey_str = None
pp = pprint.PrettyPrinter()
if len(sys.argv) != 4:
print >> sys.stderr, "Usage: %s [json_file] [namespace_id] [private_key]"
sys.exit(1)
# try to connect to our broadcast provider
try:
chaincom_id, chaincom_secret = get_chaincom_api_keys()
except Exception, e:
traceback.print_exc()
print >> sys.stderr, "Failed to get Chain.com API keys"
sys.exit(1)
chaincom_client = pybitcoin.ChainComClient(chaincom_id, chaincom_secret)
# get our namespace's names
try:
with open(sys.argv[1], "r") as f:
names_json = f.read()
except Exception, e:
traceback.print_exc()
print >> sys.stderr, "Failed to read '%s'" % sys.argv[1]
sys.exit(1)
privkey_str = sys.argv[3]
namespace_id = sys.argv[2]
print "--------------------------------------------------------------"
