import threading
import traceback
import urllib
-
+from ltc_scrypt import getPoWHash
from backends.bitcoind import deserialize
from processor import Processor, print_log
from utils import *
self.bitcoind('getinfo')
break
except:
- print_log('cannot contact bitcoind...')
+ print_log('cannot contact novacoind...')
time.sleep(5)
continue
try:
respdata = urllib.urlopen(self.bitcoind_url, postdata).read()
except:
- print_log("error calling bitcoind")
+ print_log("error calling novacoind")
traceback.print_exc(file=sys.stdout)
self.shared.stop()
}
def get_header(self, height):
- block_hash = self.bitcoind('getblockhash', [height])
- b = self.bitcoind('getblock', [block_hash])
+ b = self.bitcoind('getblockbynumber', [height])
return self.block2header(b)
def init_headers(self, db_height):
try:
while height < db_height:
- height = height + 1
+ height += 1
header = self.get_header(height)
if height > 1:
- assert prev_hash == header.get('prev_block_hash')
+ if prev_hash != header.get('prev_block_hash'):
+ # The prev_hash block is orphaned, go back
+ print_log("reorganizing, a block in file is orphaned:", prev_hash)
+ # Go to the parent of the orphaned block
+ height -= 2
+ prev_hash = self.hash_header(self.read_header(height))
+ continue
+
self.write_header(header, sync=False)
prev_hash = self.hash_header(header)
if (height % 1000) == 0:
self.flush_headers()
def hash_header(self, header):
- return rev_hex(Hash(header_to_string(header).decode('hex')).encode('hex'))
+ return rev_hex(getPoWHash(header_to_string(header).decode('hex')).encode('hex'))
def read_header(self, block_height):
if os.path.exists(self.headers_filename):
def get_merkle(self, tx_hash, height):
- block_hash = self.bitcoind('getblockhash', [height])
- b = self.bitcoind('getblock', [block_hash])
+ b = self.bitcoind('getblockbynumber', [height])
tx_list = b.get('tx')
tx_pos = tx_list.index(tx_hash)
def deserialize_block(self, block):
txlist = block.get('tx')
+
tx_hashes = [] # ordered txids
txdict = {} # deserialized tx
- is_coinbase = True
- for raw_tx in txlist:
+
+ for i, raw_tx in enumerate(txlist):
tx_hash = hash_encode(Hash(raw_tx.decode('hex')))
vds = deserialize.BCDataStream()
vds.write(raw_tx.decode('hex'))
try:
- tx = deserialize.parse_Transaction(vds, is_coinbase)
+ tx = deserialize.parse_Transaction(vds, i == 0) # first transaction is always coinbase
except:
print_log("ERROR: cannot parse", tx_hash)
continue
tx_hashes.append(tx_hash)
txdict[tx_hash] = tx
- is_coinbase = False
return tx_hashes, txdict
elif result != '':
self.push_response(session, {'id': message_id, 'result': result})
-
- def getfullblock(self, block_hash):
- block = self.bitcoind('getblock', [block_hash])
-
- rawtxreq = []
- i = 0
- for txid in block['tx']:
- rawtxreq.append({
- "method": "getrawtransaction",
- "params": [txid],
- "id": i,
- })
- i += 1
-
- postdata = dumps(rawtxreq)
- try:
- respdata = urllib.urlopen(self.bitcoind_url, postdata).read()
- except:
- print_log("bitcoind error (getfullblock)")
- traceback.print_exc(file=sys.stdout)
- self.shared.stop()
-
- r = loads(respdata)
- rawtxdata = []
- for ir in r:
- if ir['error'] is not None:
- self.shared.stop()
- print_log("Error: make sure you run bitcoind with txindex=1; use -reindex if needed.")
- raise BaseException(ir['error'])
- rawtxdata.append(ir['result'])
- block['tx'] = rawtxdata
- return block
-
def catch_up(self, sync=True):
prev_root_hash = None
self.up_to_date = True
break
+ # fixme: this is unsafe, if we revert when the undo info is not yet written
+ revert = (random.randint(1, 100) == 1) if self.test_reorgs else False
+
# not done..
self.up_to_date = False
- next_block_hash = self.bitcoind('getblockhash', [self.storage.height + 1])
- next_block = self.getfullblock(next_block_hash)
- self.mtime('daemon')
+ try:
+ next_block = self.bitcoind('getblockbynumber', [self.storage.height + 1, True])
+ except BaseException, e:
+ next_block = self.bitcoind('getblock', [self.storage.last_hash, True])
+ revert = True
- # fixme: this is unsafe, if we revert when the undo info is not yet written
- revert = (random.randint(1, 100) == 1) if self.test_reorgs else False
+ next_block_hash = next_block.get('hash')
+
+ self.mtime('daemon')
if (next_block.get('previousblockhash') == self.storage.last_hash) and not revert:
else:
# revert current block
- block = self.getfullblock(self.storage.last_hash)
+ block = self.bitcoind('getblock', [self.storage.last_hash, True])
print_log("blockchain reorg", self.storage.height, block.get('previousblockhash'), self.storage.last_hash)
self.import_block(block, self.storage.last_hash, self.storage.height, sync, revert=True)
self.pop_header()