X-Git-Url: https://git.novaco.in/?a=blobdiff_plain;f=backends%2Fbitcoind%2Fblockchain_processor.py;h=644e74efada3e4d4f4dae3cf384bd377cb336ad6;hb=d0439647dfc60efce32e0a13b0ec02428ba412cf;hp=1de5db643846ef92787611e26d132e483f78c53d;hpb=dec881f99cdda62dfe0459d55a2be129ba491bae;p=electrum-server.git diff --git a/backends/bitcoind/blockchain_processor.py b/backends/bitcoind/blockchain_processor.py index 1de5db6..644e74e 100644 --- a/backends/bitcoind/blockchain_processor.py +++ b/backends/bitcoind/blockchain_processor.py @@ -9,7 +9,7 @@ import time 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 * @@ -38,6 +38,7 @@ class BlockchainProcessor(Processor): self.headers_data = '' self.headers_path = config.get('leveldb', 'path_fulltree') + self.mempool_values = {} self.mempool_addresses = {} self.mempool_hist = {} self.mempool_hashes = set([]) @@ -87,7 +88,8 @@ class BlockchainProcessor(Processor): self.memorypool_update() print_log("Memory pool initialized.") - threading.Timer(10, self.main_iteration).start() + self.timer = threading.Timer(10, self.main_iteration) + self.timer.start() @@ -111,6 +113,7 @@ class BlockchainProcessor(Processor): try: respdata = urllib.urlopen(self.bitcoind_url, postdata).read() except: + print_log("error calling bitcoind") traceback.print_exc(file=sys.stdout) self.shared.stop() @@ -132,8 +135,7 @@ class BlockchainProcessor(Processor): } 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): @@ -171,7 +173,7 @@ class BlockchainProcessor(Processor): 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): @@ -233,7 +235,7 @@ class BlockchainProcessor(Processor): vds = deserialize.BCDataStream() vds.write(raw_tx.decode('hex')) try: - return deserialize.parse_Transaction(vds, is_coinbase=False) + return deserialize.parse_Transaction(vds, is_coinbase=False, is_coinstake=False) except: print_log("ERROR: cannot parse", txid) return None @@ -252,7 +254,8 @@ class BlockchainProcessor(Processor): hist = self.storage.get_history(addr) is_known = True except: - self.shared.stop() + print_log("error get_history") + traceback.print_exc(file=sys.stdout) raise if hist: is_known = True @@ -262,7 +265,7 @@ class BlockchainProcessor(Processor): # add memory pool with self.mempool_lock: - for txid in self.mempool_hist.get(addr, []): + for txid, delta in self.mempool_hist.get(addr, []): hist.append({'tx_hash':txid, 'height':0}) # add something to distinguish between unused and empty addresses @@ -274,6 +277,14 @@ class BlockchainProcessor(Processor): return hist + def get_unconfirmed_value(self, addr): + v = 0 + with self.mempool_lock: + for txid, delta in self.mempool_hist.get(addr, []): + v += delta + return v + + def get_status(self, addr, cache_only=False): tx_points = self.get_history(addr, cache_only) if cache_only and tx_points == -1: @@ -290,8 +301,7 @@ class BlockchainProcessor(Processor): 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) @@ -346,22 +356,27 @@ class BlockchainProcessor(Processor): def deserialize_block(self, block): + is_stake_block = False txlist = block.get('tx') + if "proof-of-stake" in block.get('flags'): # scan block flags list for + is_stake_block = True # "proof-of-stake" substring + tx_hashes = [] # ordered txids txdict = {} # deserialized tx - is_coinbase = True - for raw_tx in txlist: - tx_hash = hash_encode(Hash(raw_tx.decode('hex'))) + + for i in xrange(len(txlist)): + if is_stake_block and i == 0: # skip coinbase for + continue # stake block + tx_hash = hash_encode(Hash(txlist[i].decode('hex'))) vds = deserialize.BCDataStream() - vds.write(raw_tx.decode('hex')) + vds.write(txlist[i].decode('hex')) try: - tx = deserialize.parse_Transaction(vds, is_coinbase) - except: + tx = deserialize.parse_Transaction(vds, i == 0, is_stake_block and i == 1) # first transaction is always coinbase + except: # second transaction is coinstake if we have a stake block print_log("ERROR: cannot parse", tx_hash) continue tx_hashes.append(tx_hash) txdict[tx_hash] = tx - is_coinbase = False return tx_hashes, txdict @@ -446,7 +461,7 @@ class BlockchainProcessor(Processor): if session in l: l.remove(session) if session in l: - print "error rc!!" + print_log("error rc!!") self.shared.stop() if l == []: self.watched_addresses.pop(addr) @@ -482,18 +497,28 @@ class BlockchainProcessor(Processor): error = str(e) + ': ' + address print_log("error:", error) + elif method == 'blockchain.address.get_mempool': + try: + address = str(params[0]) + result = self.get_unconfirmed_history(address, cache_only) + except BaseException, e: + error = str(e) + ': ' + address + print_log("error:", error) + elif method == 'blockchain.address.get_balance': try: address = str(params[0]) - result = self.storage.get_balance(address) + confirmed = self.storage.get_balance(address) + unconfirmed = self.get_unconfirmed_value(address) + result = { 'confirmed':confirmed, 'unconfirmed':unconfirmed } except BaseException, e: error = str(e) + ': ' + address print_log("error:", error) - elif method == 'blockchain.address.get_path': + elif method == 'blockchain.address.get_proof': try: address = str(params[0]) - result = self.storage.get_address_path(address) + result = self.storage.get_proof(address) except BaseException, e: error = str(e) + ': ' + address print_log("error:", error) @@ -506,12 +531,22 @@ class BlockchainProcessor(Processor): error = str(e) + ': ' + address print_log("error:", error) + elif method == 'blockchain.utxo.get_address': + try: + txid = str(params[0]) + pos = int(params[1]) + txi = (txid + int_to_hex(pos, 4)).decode('hex') + result = self.storage.get_address(txi) + except BaseException, e: + error = str(e) + print_log("error:", error, params) + elif method == 'blockchain.block.get_header': if cache_only: result = -1 else: try: - height = params[0] + height = int(params[0]) result = self.get_header(height) except BaseException, e: error = str(e) + ': %d' % height @@ -522,7 +557,7 @@ class BlockchainProcessor(Processor): result = -1 else: try: - index = params[0] + index = int(params[0]) result = self.get_chunk(index) except BaseException, e: error = str(e) + ': %d' % index @@ -568,41 +603,9 @@ class BlockchainProcessor(Processor): 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: - 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): - prh = None + prev_root_hash = None while not self.shared.stopped(): self.mtime('') @@ -617,8 +620,8 @@ class BlockchainProcessor(Processor): # not done.. self.up_to_date = False - next_block_hash = self.bitcoind('getblockhash', [self.storage.height + 1]) - next_block = self.getfullblock(next_block_hash) + next_block = self.bitcoind('getblockbynumber', [self.storage.height + 1, True]) + next_block_hash = next_block.get('hash') self.mtime('daemon') # fixme: this is unsafe, if we revert when the undo info is not yet written @@ -626,6 +629,8 @@ class BlockchainProcessor(Processor): if (next_block.get('previousblockhash') == self.storage.last_hash) and not revert: + prev_root_hash = self.storage.get_root_hash() + self.import_block(next_block, next_block_hash, self.storage.height+1, sync) self.storage.height = self.storage.height + 1 self.write_header(self.block2header(next_block), sync) @@ -639,18 +644,10 @@ class BlockchainProcessor(Processor): self.mtimes['daemon'] = 0 self.mtimes['import'] = 0 - if prh: - if prh != self.storage.get_root_hash().encode('hex'): - print_log("root hash error", prh) - self.shared.stop() - raise - prh = None - else: - prh = self.storage.get_root_hash().encode('hex') # 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() @@ -662,8 +659,13 @@ class BlockchainProcessor(Processor): self.header = self.read_header(self.storage.height) self.storage.last_hash = self.hash_header(self.header) + if prev_root_hash: + assert prev_root_hash == self.storage.get_root_hash() + prev_root_hash = None + self.header = self.block2header(self.bitcoind('getblock', [self.storage.last_hash])) + self.header['utxo_root'] = self.storage.get_root_hash().encode('hex') if self.shared.stopped(): print_log( "closing database" ) @@ -674,6 +676,8 @@ class BlockchainProcessor(Processor): mempool_hashes = set(self.bitcoind('getrawmempool')) touched_addresses = set([]) + # get new transactions + new_tx = {} for tx_hash in mempool_hashes: if tx_hash in self.mempool_hashes: continue @@ -682,40 +686,74 @@ class BlockchainProcessor(Processor): if not tx: continue - mpa = self.mempool_addresses.get(tx_hash, []) - for x in tx.get('inputs'): - # we assume that the input address can be parsed by deserialize(); this is true for Electrum transactions - addr = x.get('address') - if addr and addr not in mpa: - mpa.append(addr) - touched_addresses.add(addr) + new_tx[tx_hash] = tx + self.mempool_hashes.add(tx_hash) + # remove older entries from mempool_hashes + self.mempool_hashes = mempool_hashes + + + # check all tx outputs + for tx_hash, tx in new_tx.items(): + mpa = self.mempool_addresses.get(tx_hash, {}) + out_values = [] for x in tx.get('outputs'): + out_values.append( x['value'] ) + addr = x.get('address') - if addr and addr not in mpa: - mpa.append(addr) - touched_addresses.add(addr) + if not addr: + continue + v = mpa.get(addr,0) + v += x['value'] + mpa[addr] = v + touched_addresses.add(addr) + + self.mempool_addresses[tx_hash] = mpa + self.mempool_values[tx_hash] = out_values + + # check all inputs + for tx_hash, tx in new_tx.items(): + mpa = self.mempool_addresses.get(tx_hash, {}) + for x in tx.get('inputs'): + # we assume that the input address can be parsed by deserialize(); this is true for Electrum transactions + addr = x.get('address') + if not addr: + continue + + v = self.mempool_values.get(x.get('prevout_hash')) + if v: + value = v[ x.get('prevout_n')] + else: + txi = (x.get('prevout_hash') + int_to_hex(x.get('prevout_n'), 4)).decode('hex') + try: + value = self.storage.get_utxo_value(addr,txi) + except: + print_log("utxo not in database; postponing mempool update") + return + + v = mpa.get(addr,0) + v -= value + mpa[addr] = v + touched_addresses.add(addr) self.mempool_addresses[tx_hash] = mpa - self.mempool_hashes.add(tx_hash) - # remove older entries from mempool_hashes - self.mempool_hashes = mempool_hashes # remove deprecated entries from mempool_addresses for tx_hash, addresses in self.mempool_addresses.items(): if tx_hash not in self.mempool_hashes: self.mempool_addresses.pop(tx_hash) + self.mempool_values.pop(tx_hash) for addr in addresses: touched_addresses.add(addr) # rebuild mempool histories new_mempool_hist = {} for tx_hash, addresses in self.mempool_addresses.items(): - for addr in addresses: + for addr, delta in addresses.items(): h = new_mempool_hist.get(addr, []) if tx_hash not in h: - h.append(tx_hash) + h.append((tx_hash, delta)) new_mempool_hist[addr] = h with self.mempool_lock: @@ -739,10 +777,17 @@ class BlockchainProcessor(Processor): # TODO: update cache here. if new value equals cached value, do not send notification self.address_queue.put((address,sessions)) + + def close(self): + self.timer.join() + print_log("Closing database...") + self.storage.close() + print_log("Database is closed") + + def main_iteration(self): if self.shared.stopped(): - print_log("blockchain processor terminating") - self.storage.close() + print_log("Stopping timer") return with self.dblock: @@ -785,7 +830,7 @@ class BlockchainProcessor(Processor): 'params': [addr, status], }) - if not self.shared.stopped(): - threading.Timer(10, self.main_iteration).start() - else: - print_log("blockchain processor terminating") + # next iteration + self.timer = threading.Timer(10, self.main_iteration) + self.timer.start() +