import time, threading
+import hashlib
+encode = lambda x: x[::-1].encode('hex')
+decode = lambda x: x.decode('hex')[::-1]
+Hash = lambda x: hashlib.sha256(hashlib.sha256(x).digest()).digest()
+
+def rev_hex(s):
+ return s.decode('hex')[::-1].encode('hex')
+
+def int_to_hex(i, length=1):
+ s = hex(i)[2:].rstrip('L')
+ s = "0"*(2*length - len(s)) + s
+ return rev_hex(s)
+
+def header_to_string(res):
+ s = int_to_hex(res.get('version'),4) \
+ + rev_hex(res.get('prev_block_hash')) \
+ + rev_hex(res.get('merkle_root')) \
+ + int_to_hex(int(res.get('timestamp')),4) \
+ + int_to_hex(int(res.get('bits')),4) \
+ + int_to_hex(int(res.get('nonce')),4)
+ return s
+
class AbeStore(Datastore_class):
elif args.dbtype == 'psycopg2':
args.connect_args = { 'database' : config.get('database','database') }
+ coin = config.get('server', 'coin')
+ self.addrtype = 0
+ if coin == 'litecoin':
+ print 'Litecoin settings:'
+ datadir = config.get('server','datadir')
+ print ' datadir = ' + datadir
+ args.datadir = [{"dirname":datadir,"chain":"Litecoin","code3":"LTC","address_version":"\u0030"}]
+ print ' addrtype = 48'
+ self.addrtype = 48
+
Datastore_class.__init__(self,args)
+ # Use 1 (Bitcoin) if chain_id is not sent
+ self.chain_id = self.datadirs[0]["chain_id"] or 1
+ print 'Coin chain_id = %d' % self.chain_id
+
self.sql_limit = int( config.get('database','limit') )
self.tx_cache = {}
self.bitcoind_url = 'http://%s:%s@%s:%s/' % ( config.get('bitcoind','user'), config.get('bitcoind','password'), config.get('bitcoind','host'), config.get('bitcoind','port'))
+ self.chunk_cache = {}
+
self.address_queue = Queue()
- self.dblock = thread.allocate_lock()
+ self.lock = threading.Lock() # for the database
+ self.cache_lock = threading.Lock() # for the cache
+ self.last_tx_id = 0
+ self.known_mempool_hashes = []
+
+
+
+ def import_tx(self, tx, is_coinbase):
+ tx_id = super(AbeStore, self).import_tx(tx, is_coinbase)
+ self.last_tx_id = tx_id
+ return tx_id
+
#print "WARNING: missing tx_in for tx", txid
continue
- address = hash_to_address(chr(0), _hash)
- if self.tx_cache.has_key(address):
- print "cache: invalidating", address
- self.tx_cache.pop(address)
+ address = hash_to_address(chr(self.addrtype), _hash)
+ with self.cache_lock:
+ if self.tx_cache.has_key(address):
+ print "cache: invalidating", address
+ self.tx_cache.pop(address)
+
self.address_queue.put(address)
outrows = self.get_tx_outputs(txid, False)
#print "WARNING: missing tx_out for tx", txid
continue
- address = hash_to_address(chr(0), _hash)
- if self.tx_cache.has_key(address):
- print "cache: invalidating", address
- self.tx_cache.pop(address)
+ address = hash_to_address(chr(self.addrtype), _hash)
+ with self.cache_lock:
+ if self.tx_cache.has_key(address):
+ print "cache: invalidating", address
+ self.tx_cache.pop(address)
+
self.address_queue.put(address)
def safe_sql(self,sql, params=(), lock=True):
error = False
try:
- if lock: self.dblock.acquire()
+ if lock: self.lock.acquire()
ret = self.selectall(sql,params)
except:
error = True
traceback.print_exc(file=sys.stdout)
finally:
- if lock: self.dblock.release()
+ if lock: self.lock.release()
if error:
raise BaseException('sql error')
JOIN txout prevout ON (txin.txout_id = prevout.txout_id)
JOIN pubkey ON (pubkey.pubkey_id = prevout.pubkey_id)
WHERE pubkey.pubkey_hash = ?
+ AND cc.chain_id = ?
AND cc.in_longest = 1
- LIMIT ? """, (dbhash,self.sql_limit))
+ LIMIT ? """, (dbhash, self.chain_id, self.sql_limit))
if len(out)==self.sql_limit:
raise BaseException('limit reached')
JOIN txout ON (txout.tx_id = tx.tx_id)
JOIN pubkey ON (pubkey.pubkey_id = txout.pubkey_id)
WHERE pubkey.pubkey_hash = ?
+ AND cc.chain_id = ?
AND cc.in_longest = 1
- LIMIT ? """, (dbhash,self.sql_limit))
+ LIMIT ? """, (dbhash, self.chain_id, self.sql_limit))
if len(out)==self.sql_limit:
raise BaseException('limit reached')
raise BaseException('limit reached')
return out
- def get_history(self, addr):
- cached_version = self.tx_cache.get( addr )
- if cached_version is not None:
- return cached_version
+
+ def get_history(self, addr, cache_only=False):
+ with self.cache_lock:
+ cached_version = self.tx_cache.get( addr )
+ if cached_version is not None:
+ return cached_version
+
+ if cache_only: return -1
version, binaddr = decode_check_address(addr)
if binaddr is None:
rows += self.get_address_out_rows_memorypool( dbhash )
address_has_mempool = False
- current_id = self.safe_sql("""SELECT last_value FROM tx_seq""")
- current_id = current_id[0][0]
-
for row in rows:
is_in, tx_hash, tx_id, pos, value = row
tx_hash = self.hashout_hex(tx_hash)
if tx_hash in known_tx:
continue
- # this means that pending transactions were added to the db, even if they are not returned by getmemorypool
- address_has_mempool = True
-
- # fixme: we need to detect transactions that became invalid
- if current_id - tx_id > 10000:
+ # discard transactions that are too old
+ if self.last_tx_id - tx_id > 50000:
+ print "discarding tx id", tx_id
continue
+ # this means that pending transactions were added to the db, even if they are not returned by getmemorypool
+ address_has_mempool = True
#print "mempool", tx_hash
txpoint = {
if not _hash:
#print "WARNING: missing tx_in for tx", tx_id, addr
continue
- address = hash_to_address(chr(0), _hash)
+ address = hash_to_address(chr(self.addrtype), _hash)
txinputs.append(address)
txpoint['inputs'] = txinputs
txoutputs = []
if not _hash:
#print "WARNING: missing tx_out for tx", tx_id, addr
continue
- address = hash_to_address(chr(0), _hash)
+ address = hash_to_address(chr(self.addrtype), _hash)
txoutputs.append(address)
txpoint['outputs'] = txoutputs
if row:
if not row[4]: txpoint['raw_output_script'] = row[1]
+ txpoint.pop('tx_id')
+
# cache result
# do not cache mempool results because statuses are ambiguous
if not address_has_mempool:
- self.tx_cache[addr] = txpoints
+ with self.cache_lock:
+ self.tx_cache[addr] = txpoints
return txpoints
+ def get_history2(self, addr, cache_only=False):
+ h = self.get_history(addr, cache_only)
+ if cache_only and h==-1: return -1
+
+ out = map(lambda x: {'tx_hash':x['tx_hash'], 'height':x['height']}, h)
+ out2 = []
+ for item in out:
+ if item not in out2: out2.append(item)
+ return out2
- def get_status(self,addr):
+
+ def get_status(self, addr, cache_only=False):
# get address status, i.e. the last block for that address.
- tx_points = self.get_history(addr)
+ tx_points = self.get_history(addr, cache_only)
+ if cache_only and tx_points == -1: return -1
+
if not tx_points:
status = None
else:
status = status + ':%d'% len(tx_points)
return status
+ def get_status2(self, addr, cache_only=False):
+ # for 0.5 clients
+ tx_points = self.get_history2(addr)
+ if cache_only and tx_points == -1: return -1
+
+ if not tx_points: return None
+ status = ''
+ for tx in tx_points:
+ status += tx.get('tx_hash') + ':%d:' % tx.get('height')
+ return hashlib.sha256( status ).digest().encode('hex')
+
+
+ def get_block_header(self, block_height):
+ out = self.safe_sql("""
+ SELECT
+ block_hash,
+ block_version,
+ block_hashMerkleRoot,
+ block_nTime,
+ block_nBits,
+ block_nNonce,
+ block_height,
+ prev_block_hash,
+ block_id
+ FROM chain_summary
+ WHERE block_height = %d AND in_longest = 1"""%block_height)
+
+ if not out: raise BaseException("block not found")
+ row = out[0]
+ (block_hash, block_version, hashMerkleRoot, nTime, nBits, nNonce, height,prev_block_hash, block_id) \
+ = ( self.hashout_hex(row[0]), int(row[1]), self.hashout_hex(row[2]), int(row[3]), int(row[4]), int(row[5]), int(row[6]), self.hashout_hex(row[7]), int(row[8]) )
+
+ out = {"block_height":block_height, "version":block_version, "prev_block_hash":prev_block_hash,
+ "merkle_root":hashMerkleRoot, "timestamp":nTime, "bits":nBits, "nonce":nNonce}
+ return out
+
+
+ def get_chunk(self, index):
+ with self.cache_lock:
+ msg = self.chunk_cache.get(index)
+ if msg: return msg
+
+ sql = """
+ SELECT
+ block_hash,
+ block_version,
+ block_hashMerkleRoot,
+ block_nTime,
+ block_nBits,
+ block_nNonce,
+ block_height,
+ prev_block_hash,
+ block_height
+ FROM chain_summary
+ WHERE block_height >= %d AND block_height< %d AND in_longest = 1"""%(index*2016, (index+1)*2016)
+
+ out = self.safe_sql(sql)
+ msg = ''
+ for row in out:
+ (block_hash, block_version, hashMerkleRoot, nTime, nBits, nNonce, height, prev_block_hash, block_height) \
+ = ( self.hashout_hex(row[0]), int(row[1]), self.hashout_hex(row[2]), int(row[3]), int(row[4]), int(row[5]), int(row[6]), self.hashout_hex(row[7]), int(row[8]) )
+ h = {"block_height":block_height, "version":block_version, "prev_block_hash":prev_block_hash,
+ "merkle_root":hashMerkleRoot, "timestamp":nTime, "bits":nBits, "nonce":nNonce}
+
+ if h.get('block_height')==0: h['prev_block_hash'] = "0"*64
+ msg += header_to_string(h)
+
+ #print "hash", encode(Hash(msg.decode('hex')))
+ #if h.get('block_height')==1:break
+
+ with self.cache_lock:
+ self.chunk_cache[index] = msg
+ print "get_chunk", index, len(msg)
+ return msg
+
+
+
+ def get_raw_tx(self, tx_hash, height):
+ postdata = dumps({"method": 'getrawtransaction', 'params': [tx_hash, 0, height], 'id':'jsonrpc'})
+ respdata = urllib.urlopen(self.bitcoind_url, postdata).read()
+ r = loads(respdata)
+ if r['error'] != None:
+ raise BaseException(r['error'])
+
+ hextx = r.get('result')
+ return hextx
+
+
+ def get_tx_merkle(self, tx_hash):
+
+ out = self.safe_sql("""
+ SELECT block_tx.block_id FROM tx
+ JOIN block_tx on tx.tx_id = block_tx.tx_id
+ JOIN chain_summary on chain_summary.block_id = block_tx.block_id
+ WHERE tx_hash='%s' AND in_longest = 1"""%tx_hash)
+
+ if not out: raise BaseException("not in a block")
+ block_id = int(out[0][0])
+
+ # get block height
+ out = self.safe_sql("SELECT block_height FROM chain_summary WHERE block_id = %d AND in_longest = 1"%block_id)
+
+ if not out: raise BaseException("block not found")
+ block_height = int(out[0][0])
+
+ merkle = []
+ tx_pos = None
+
+ # list all tx in block
+ for row in self.safe_sql("""
+ SELECT DISTINCT tx_id, tx_pos, tx_hash
+ FROM txin_detail
+ WHERE block_id = ?
+ ORDER BY tx_pos""", (block_id,)):
+ _id, _pos, _hash = row
+ merkle.append(_hash)
+ if _hash == tx_hash: tx_pos = int(_pos)
+
+ # find subset.
+ # TODO: do not compute this on client request, better store the hash tree of each block in a database...
+
+ merkle = map(decode, merkle)
+ target_hash = decode(tx_hash)
+
+ s = []
+ while len(merkle) != 1:
+ if len(merkle)%2: merkle.append( merkle[-1] )
+ n = []
+ while merkle:
+ new_hash = Hash( merkle[0] + merkle[1] )
+ if merkle[0] == target_hash:
+ s.append( encode(merkle[1]))
+ target_hash = new_hash
+ elif merkle[1] == target_hash:
+ s.append( encode(merkle[0]))
+ target_hash = new_hash
+ n.append( new_hash )
+ merkle = merkle[2:]
+ merkle = n
+
+ # send result
+ return {"block_height":block_height, "merkle":s, "pos":tx_pos}
+
+
def memorypool_update(store):
ds = BCDataStream.BCDataStream()
- postdata = dumps({"method": 'getmemorypool', 'params': [], 'id':'jsonrpc'})
-
+ postdata = dumps({"method": 'getrawmempool', 'params': [], 'id':'jsonrpc'})
respdata = urllib.urlopen(store.bitcoind_url, postdata).read()
r = loads(respdata)
if r['error'] != None:
+ print r['error']
return
- v = r['result'].get('transactions')
- for hextx in v:
+ mempool_hashes = r.get('result')
+ for tx_hash in mempool_hashes:
+
+ if tx_hash in store.known_mempool_hashes: continue
+ store.known_mempool_hashes.append(tx_hash)
+
+ postdata = dumps({"method": 'getrawtransaction', 'params': [tx_hash], 'id':'jsonrpc'})
+ respdata = urllib.urlopen(store.bitcoind_url, postdata).read()
+ r = loads(respdata)
+ if r['error'] != None:
+ continue
+ hextx = r.get('result')
ds.clear()
ds.write(hextx.decode('hex'))
tx = deserialize.parse_Transaction(ds)
tx['hash'] = util.double_sha256(tx['tx'])
- tx_hash = store.hashin(tx['hash'])
-
+
if store.tx_find_id_and_value(tx):
pass
else:
tx_id = store.import_tx(tx, False)
store.update_tx_cache(tx_id)
#print tx_hash
-
+
store.commit()
+ store.known_mempool_hashes = mempool_hashes
def send_tx(self,tx):
- postdata = dumps({"method": 'importtransaction', 'params': [tx], 'id':'jsonrpc'})
+ postdata = dumps({"method": 'sendrawtransaction', 'params': [tx], 'id':'jsonrpc'})
respdata = urllib.urlopen(self.bitcoind_url, postdata).read()
r = loads(respdata)
if r['error'] != None:
return out
- def main_iteration(store):
- try:
- store.dblock.acquire()
- store.catch_up()
- store.memorypool_update()
- block_number = store.get_block_number(1)
-
- except IOError:
- print "IOError: cannot reach bitcoind"
- block_number = 0
- except:
- traceback.print_exc(file=sys.stdout)
- block_number = 0
- finally:
- store.dblock.release()
+ def main_iteration(self):
+ with self.lock:
+ self.catch_up()
+ self.memorypool_update()
+ height = self.get_block_number( self.chain_id )
+ try: self.chunk_cache.pop(height/2016)
+ except: pass
+
+ block_header = self.get_block_header( height )
+ return block_header
+
- return block_number
def catch_up(store):
def __init__(self, config):
Processor.__init__(self)
self.store = AbeStore(config)
- self.block_number = -1
self.watched_addresses = []
+
+ # catch_up first
+ self.block_header = self.store.main_iteration()
+ self.block_number = self.block_header.get('block_height')
+ print "blockchain: %d blocks"%self.block_number
+
threading.Timer(10, self.run_store_iteration).start()
- def process(self, request):
+
+ def add_request(self, request):
+ # see if we can get if from cache. if not, add to queue
+ if self.process( request, cache_only=True) == -1:
+ self.queue.put(request)
+
+
+ def process(self, request, cache_only = False):
#print "abe process", request
message_id = request['id']
if method == 'blockchain.numblocks.subscribe':
result = self.block_number
+ elif method == 'blockchain.headers.subscribe':
+ result = self.block_header
+
elif method == 'blockchain.address.subscribe':
try:
address = params[0]
- result = self.store.get_status(address)
+ result = self.store.get_status(address, cache_only)
+ self.watch_address(address)
+ except BaseException, e:
+ error = str(e) + ': ' + address
+ print "error:", error
+
+ elif method == 'blockchain.address.subscribe2':
+ try:
+ address = params[0]
+ result = self.store.get_status2(address, cache_only)
self.watch_address(address)
except BaseException, e:
error = str(e) + ': ' + address
elif method == 'blockchain.address.get_history':
try:
address = params[0]
- result = self.store.get_history( address )
+ result = self.store.get_history( address, cache_only )
+ except BaseException, e:
+ error = str(e) + ': ' + address
+ print "error:", error
+
+ elif method == 'blockchain.address.get_history2':
+ try:
+ address = params[0]
+ result = self.store.get_history2( address, cache_only )
except BaseException, e:
error = str(e) + ': ' + address
print "error:", error
+ elif method == 'blockchain.block.get_header':
+ if cache_only:
+ result = -1
+ else:
+ try:
+ height = params[0]
+ result = self.store.get_block_header( height )
+ except BaseException, e:
+ error = str(e) + ': %d'% height
+ print "error:", error
+
+ elif method == 'blockchain.block.get_chunk':
+ if cache_only:
+ result = -1
+ else:
+ try:
+ index = params[0]
+ result = self.store.get_chunk( index )
+ except BaseException, e:
+ error = str(e) + ': %d'% index
+ print "error:", error
+
elif method == 'blockchain.transaction.broadcast':
txo = self.store.send_tx(params[0])
print "sent tx:", txo
result = txo
+ elif method == 'blockchain.transaction.get_merkle':
+ if cache_only:
+ result = -1
+ else:
+ try:
+ tx_hash = params[0]
+ result = self.store.get_tx_merkle(tx_hash )
+ except BaseException, e:
+ error = str(e) + ': ' + tx_hash
+ print "error:", error
+
+ elif method == 'blockchain.transaction.get':
+ try:
+ tx_hash = params[0]
+ height = params[1]
+ result = self.store.get_raw_tx(tx_hash, height )
+ except BaseException, e:
+ error = str(e) + ': ' + tx_hash
+ print "error:", error
+
else:
error = "unknown method:%s"%method
+ if cache_only and result == -1: return -1
if error:
response = { 'id':message_id, 'error':error }
def run_store_iteration(self):
+
+ try:
+ t1 = time.time()
+ block_header = self.store.main_iteration()
+ t2 = time.time() - t1
+ except:
+ traceback.print_exc(file=sys.stdout)
+ print "terminating"
+ self.shared.stop()
+
if self.shared.stopped():
print "exit timer"
return
-
- block_number = self.store.main_iteration()
- if self.block_number != block_number:
- self.block_number = block_number
- print "block number:", self.block_number
- self.push_response({ 'method':'blockchain.numblocks.subscribe', 'params':[self.block_number] })
+
+ if self.block_number != block_header.get('block_height'):
+ self.block_number = block_header.get('block_height')
+ print "block number: %d (%.3f seconds)"%(self.block_number, t2)
+ self.push_response({ 'id': None, 'method':'blockchain.numblocks.subscribe', 'params':[self.block_number] })
+
+ if self.block_header != block_header:
+ self.block_header = block_header
+ self.push_response({ 'id': None, 'method':'blockchain.headers.subscribe', 'params':[self.block_header] })
+
while True:
try:
break
if addr in self.watched_addresses:
status = self.store.get_status( addr )
- self.push_response({ 'method':'blockchain.address.subscribe', 'params':[addr, status] })
+ status2 = self.store.get_status2( addr )
+ self.push_response({ 'id': None, 'method':'blockchain.address.subscribe', 'params':[addr, status] })
+ self.push_response({ 'id': None, 'method':'blockchain.address.subscribe2', 'params':[addr, status2] })
threading.Timer(10, self.run_store_iteration).start()
git://git.novaco.in / electrum-server.git / blobdiff