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):
def __init__(self, config):
coin = config.get('server', 'coin')
self.addrtype = 0
if coin == 'litecoin':
- print 'Litecoin settings:'
+ print_log ('Litecoin settings:')
datadir = config.get('server','datadir')
- print ' datadir = ' + datadir
+ print_log (' datadir = ' + datadir)
args.datadir = [{"dirname":datadir,"chain":"Litecoin","code3":"LTC","address_version":"\u0030"}]
- print ' addrtype = 48'
+ print_log (' 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
+ print_log ('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)
def import_block(self, b, chain_ids=frozenset()):
- #print "import block"
+ #print_log ("import block")
block_id = super(AbeStore, self).import_block(b, chain_ids)
for pos in xrange(len(b['transactions'])):
tx = b['transactions'][pos]
if tx_id:
self.update_tx_cache(tx_id)
else:
- print "error: import_block: no tx_id"
+ print_log ("error: import_block: no tx_id")
return block_id
for row in inrows:
_hash = self.binout(row[6])
if not _hash:
- #print "WARNING: missing tx_in for tx", txid
+ #print_log ("WARNING: missing tx_in for tx", txid)
continue
address = hash_to_address(chr(self.addrtype), _hash)
- if self.tx_cache.has_key(address):
- print "cache: invalidating", address
- self.tx_cache.pop(address)
+ with self.cache_lock:
+ if self.tx_cache.has_key(address):
+ print_log ("cache: invalidating", address)
+ self.tx_cache.pop(address)
+
self.address_queue.put(address)
outrows = self.get_tx_outputs(txid, False)
for row in outrows:
_hash = self.binout(row[6])
if not _hash:
- #print "WARNING: missing tx_out for tx", txid
+ #print_log ("WARNING: missing tx_out for tx", txid)
continue
address = hash_to_address(chr(self.addrtype), _hash)
- if self.tx_cache.has_key(address):
- print "cache: invalidating", address
- self.tx_cache.pop(address)
+ with self.cache_lock:
+ if self.tx_cache.has_key(address):
+ print_log ("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')
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:
try:
nTime, chain_id, height, is_in, blk_hash, tx_hash, tx_id, pos, value = row
except:
- print "cannot unpack row", row
+ print_log ("cannot unpack row", row)
break
tx_hash = self.hashout_hex(tx_hash)
txpoint = {
# discard transactions that are too old
if self.last_tx_id - tx_id > 50000:
- print "discarding tx id", tx_id
+ print_log ("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
+ #print_log ("mempool", tx_hash)
txpoint = {
"timestamp": 0,
"height": 0,
for row in inrows:
_hash = self.binout(row[6])
if not _hash:
- #print "WARNING: missing tx_in for tx", tx_id, addr
+ #print_log ("WARNING: missing tx_in for tx", tx_id, addr)
continue
address = hash_to_address(chr(self.addrtype), _hash)
txinputs.append(address)
for row in outrows:
_hash = self.binout(row[6])
if not _hash:
- #print "WARNING: missing tx_out for tx", tx_id, addr
+ #print_log ("WARNING: missing tx_out for tx", tx_id, addr)
continue
address = hash_to_address(chr(self.addrtype), _hash)
txoutputs.append(address)
txpoint.pop('tx_id')
+
+ txpoints = map(lambda x: {'tx_hash':x['tx_hash'], 'height':x['height']}, txpoints)
+ out = []
+ for item in txpoints:
+ if item not in out: out.append(item)
+
# cache result
- # do not cache mempool results because statuses are ambiguous
- if not address_has_mempool:
- self.tx_cache[addr] = txpoints
+ ## do not cache mempool results because statuses are ambiguous
+ #if not address_has_mempool:
+ with self.cache_lock:
+ self.tx_cache[addr] = out
- return txpoints
+ return out
- def get_status(self,addr):
- # get address status, i.e. the last block for that address.
- tx_points = self.get_history(addr)
- if not tx_points:
- status = None
- else:
- lastpoint = tx_points[-1]
- status = lastpoint['block_hash']
- # this is a temporary hack; move it up once old clients have disappeared
- if status == 'mempool': # and session['version'] != "old":
- status = status + ':%d'% len(tx_points)
- return status
+ def get_status(self, addr, cache_only=False):
+ # for 0.5 clients
+ tx_points = self.get_history(addr, cache_only)
+ 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):
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 ORDER BY block_height"""%(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_log ("hash", encode(Hash(msg.decode('hex'))))
+ #if h.get('block_height')==1:break
+
+ with self.cache_lock:
+ self.chunk_cache[index] = msg
+ print_log ("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("""
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)
- block_id = out[0]
+
+ 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)
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,)):
- tx_id, tx_pos, tx_h = row
- merkle.append(tx_h)
+ _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...
- 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()
merkle = map(decode, merkle)
target_hash = decode(tx_hash)
while merkle:
new_hash = Hash( merkle[0] + merkle[1] )
if merkle[0] == target_hash:
- s.append( "L" + encode(merkle[1]))
+ s.append( encode(merkle[1]))
target_hash = new_hash
elif merkle[1] == target_hash:
- s.append( "R" + encode(merkle[0]))
+ 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}
+ return {"block_height":block_height, "merkle":s, "pos":tx_pos}
ds = BCDataStream.BCDataStream()
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']
+ print_log (r['error'])
return
mempool_hashes = r.get('result')
+ num_new_tx = 0
+
for tx_hash in mempool_hashes:
if tx_hash in store.known_mempool_hashes: continue
store.known_mempool_hashes.append(tx_hash)
+ num_new_tx += 1
postdata = dumps({"method": 'getrawtransaction', 'params': [tx_hash], 'id':'jsonrpc'})
respdata = urllib.urlopen(store.bitcoind_url, postdata).read()
else:
tx_id = store.import_tx(tx, False)
store.update_tx_cache(tx_id)
- #print tx_hash
+ #print_log (tx_hash)
store.commit()
store.known_mempool_hashes = mempool_hashes
+ return num_new_tx
def send_tx(self,tx):
return out
- def main_iteration(store):
- with store.dblock:
- store.catch_up()
- store.memorypool_update()
- block_number = store.get_block_number(store.chain_id)
- return block_number
+ def main_iteration(self):
+ with self.lock:
+ t1 = time.time()
+ self.catch_up()
+ t2 = time.time()
+ time_catch_up = t2 - t1
+ n = self.memorypool_update()
+ time_mempool = time.time() - t2
+ height = self.get_block_number( self.chain_id )
+
+ with self.cache_lock:
+ try:
+ self.chunk_cache.pop(height/2016)
+ except:
+ pass
+
+ block_header = self.get_block_header( height )
+ return block_header, time_catch_up, time_mempool, n
-from processor import Processor
+from processor import Processor, print_log
class BlockchainProcessor(Processor):
- def __init__(self, config):
+ def __init__(self, config, shared):
Processor.__init__(self)
self.store = AbeStore(config)
- self.block_number = -1
self.watched_addresses = []
+ self.shared = shared
# catch_up first
- n = self.store.main_iteration()
- print "blockchain: %d blocks"%n
+ self.block_header, time_catch_up, time_mempool, n = self.store.main_iteration()
+ self.block_number = self.block_header.get('block_height')
+ print_log ("blockchain: %d blocks"%self.block_number)
threading.Timer(10, self.run_store_iteration).start()
- def process(self, request):
- #print "abe process", 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_log ("abe process", request)
message_id = request['id']
method = request['method']
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
+ print_log ("error:", error)
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
+ print_log ("error:", error)
elif method == 'blockchain.block.get_header':
- try:
- height = params[0]
- result = self.store.get_block_header( height )
- except BaseException, e:
- error = str(e) + ': %d'% height
- print "error:", error
-
+ 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_log ("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_log ("error:", error)
+
elif method == 'blockchain.transaction.broadcast':
txo = self.store.send_tx(params[0])
- print "sent tx:", txo
+ print_log ("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_log ("error:", error)
+
+ elif method == 'blockchain.transaction.get':
try:
tx_hash = params[0]
- result = self.store.get_tx_merkle(tx_hash )
+ height = params[1]
+ result = self.store.get_raw_tx(tx_hash, height )
except BaseException, e:
error = str(e) + ': ' + tx_hash
- print "error:", error
+ print_log ("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:
- block_number = self.store.main_iteration()
+ block_header, time_catch_up, time_mempool, n = self.store.main_iteration()
except:
traceback.print_exc(file=sys.stdout)
- print "terminating"
+ print_log ("terminating")
self.shared.stop()
if self.shared.stopped():
- print "exit timer"
+ print_log ("exit timer")
return
- if self.block_number != block_number:
- self.block_number = block_number
- print "block number:", self.block_number
+ #print_log ("block number: %d (%.3fs) mempool:%d (%.3fs)"%(self.block_number, time_catch_up, n, time_mempool))
+
+ if self.block_number != block_header.get('block_height'):
+ self.block_number = block_header.get('block_height')
+ print_log ("block number: %d (%.3fs)"%(self.block_number, time_catch_up))
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:
addr = self.store.address_queue.get(False)
except:
break
if addr in self.watched_addresses:
- status = self.store.get_status( addr )
- self.push_response({ 'id': None, 'method':'blockchain.address.subscribe', 'params':[addr, status] })
+ try:
+ status = self.store.get_status( addr )
+ self.push_response({ 'id': None, 'method':'blockchain.address.subscribe', 'params':[addr, status] })
+ except:
+ break
threading.Timer(10, self.run_store_iteration).start()
git://git.novaco.in / electrum-server.git / blobdiff