+import ast
+import hashlib
from json import dumps, loads
-import leveldb, urllib
-import deserialize
-import ast, time, threading, hashlib
+import os
from Queue import Queue
+import random
+import sys
+import time
+import threading
+import traceback
+import urllib
+
+from backends.bitcoind import deserialize
+from processor import Processor, print_log
+from utils import *
-
-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)
+from storage import Storage
-from processor import Processor, print_log
+class BlockchainProcessor(Processor):
+ def __init__(self, config, shared):
+ Processor.__init__(self)
-class Blockchain2Processor(Processor):
+ self.mtimes = {} # monitoring
+ self.shared = shared
+ self.config = config
+ self.up_to_date = False
- def __init__(self, config):
- Processor.__init__(self)
+ self.watch_lock = threading.Lock()
+ self.watch_blocks = []
+ self.watch_headers = []
+ self.watched_addresses = {}
- self.watched_addresses = []
self.history_cache = {}
self.chunk_cache = {}
self.cache_lock = threading.Lock()
+ self.headers_data = ''
+ self.headers_path = config.get('leveldb', 'path_fulltree')
+ self.mempool_addresses = {}
self.mempool_hist = {}
- self.known_mempool_hashes = []
+ self.mempool_hashes = set([])
+ self.mempool_lock = threading.Lock()
+
self.address_queue = Queue()
- self.dblock = threading.Lock()
try:
- self.db = leveldb.LevelDB(config.get('leveldb', 'path'))
+ self.test_reorgs = config.getboolean('leveldb', 'test_reorgs') # simulate random blockchain reorgs
except:
- traceback.print_exc(file=sys.stdout)
- self.shared.stop()
+ self.test_reorgs = False
+ self.storage = Storage(config, shared, self.test_reorgs)
+
+ self.dblock = threading.Lock()
self.bitcoind_url = 'http://%s:%s@%s:%s/' % (
- config.get('bitcoind','user'),
- config.get('bitcoind','password'),
- config.get('bitcoind','host'),
- config.get('bitcoind','port'))
+ config.get('bitcoind', 'user'),
+ config.get('bitcoind', 'password'),
+ config.get('bitcoind', 'host'),
+ config.get('bitcoind', 'port'))
+
+ while True:
+ try:
+ self.bitcoind('getinfo')
+ break
+ except:
+ print_log('cannot contact bitcoind...')
+ time.sleep(5)
+ continue
- self.height = 0
self.sent_height = 0
self.sent_header = None
- # catch_up first
- try:
- hist = self.deserialize(self.db.Get('0'))
- hh, self.height = hist[0]
- self.block_hashes = [hh]
- print_log( "hist", hist )
- except:
- traceback.print_exc(file=sys.stdout)
- self.height = 0
- self.block_hashes = [ '000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f' ]
+ # catch_up headers
+ self.init_headers(self.storage.height)
+
+ threading.Timer(0, lambda: self.catch_up(sync=False)).start()
+ while not shared.stopped() and not self.up_to_date:
+ try:
+ time.sleep(1)
+ except:
+ print "keyboard interrupt: stopping threads"
+ shared.stop()
+ sys.exit(0)
+
+ print_log("Blockchain is up to date.")
+ self.memorypool_update()
+ print_log("Memory pool initialized.")
threading.Timer(10, self.main_iteration).start()
+
+ def mtime(self, name):
+ now = time.time()
+ if name != '':
+ delta = now - self.now
+ t = self.mtimes.get(name, 0)
+ self.mtimes[name] = t + delta
+ self.now = now
+
+ def print_mtime(self):
+ s = ''
+ for k, v in self.mtimes.items():
+ s += k+':'+"%.2f"%v+' '
+ print_log(s)
+
+
def bitcoind(self, method, params=[]):
- postdata = dumps({"method": method, 'params': params, 'id':'jsonrpc'})
- respdata = urllib.urlopen(self.bitcoind_url, postdata).read()
+ postdata = dumps({"method": method, 'params': params, 'id': 'jsonrpc'})
+ try:
+ respdata = urllib.urlopen(self.bitcoind_url, postdata).read()
+ except:
+ traceback.print_exc(file=sys.stdout)
+ self.shared.stop()
+
r = loads(respdata)
- if r['error'] != None:
+ if r['error'] is not None:
raise BaseException(r['error'])
return r.get('result')
-
-
- def serialize(self, h):
- s = ''
- for txid, height in h:
- s += txid + int_to_hex(height, 4)
- return s.decode('hex')
-
- def deserialize(self, s):
- h = []
- while s:
- txid = s[0:32].encode('hex')
- height = s[32:36].encode('hex')
- height = int( rev_hex( height ), 16 )
- h.append( ( txid, height ) )
- s = s[36:]
- return h
def block2header(self, b):
- return {"block_height":b.get('height'), "version":b.get('version'), "prev_block_hash":b.get('previousblockhash'),
- "merkle_root":b.get('merkleroot'), "timestamp":b.get('time'), "bits":b.get('bits'), "nonce":b.get('nonce')}
+ return {
+ "block_height": b.get('height'),
+ "version": b.get('version'),
+ "prev_block_hash": b.get('previousblockhash'),
+ "merkle_root": b.get('merkleroot'),
+ "timestamp": b.get('time'),
+ "bits": int(b.get('bits'), 16),
+ "nonce": b.get('nonce'),
+ }
def get_header(self, height):
block_hash = self.bitcoind('getblockhash', [height])
b = self.bitcoind('getblock', [block_hash])
return self.block2header(b)
-
- def get_chunk(self):
+ def init_headers(self, db_height):
+ self.chunk_cache = {}
+ self.headers_filename = os.path.join(self.headers_path, 'blockchain_headers')
+
+ if os.path.exists(self.headers_filename):
+ height = os.path.getsize(self.headers_filename)/80 - 1 # the current height
+ if height > 0:
+ prev_hash = self.hash_header(self.read_header(height))
+ else:
+ prev_hash = None
+ else:
+ open(self.headers_filename, 'wb').close()
+ prev_hash = None
+ height = -1
+
+ if height < db_height:
+ print_log("catching up missing headers:", height, db_height)
+
+ try:
+ while height < db_height:
+ height = height + 1
+ header = self.get_header(height)
+ if height > 1:
+ assert prev_hash == header.get('prev_block_hash')
+ self.write_header(header, sync=False)
+ prev_hash = self.hash_header(header)
+ if (height % 1000) == 0:
+ print_log("headers file:", height)
+ except KeyboardInterrupt:
+ self.flush_headers()
+ sys.exit()
+
+ self.flush_headers()
+
+ def hash_header(self, header):
+ return rev_hex(Hash(header_to_string(header).decode('hex')).encode('hex'))
+
+ def read_header(self, block_height):
+ if os.path.exists(self.headers_filename):
+ with open(self.headers_filename, 'rb') as f:
+ f.seek(block_height * 80)
+ h = f.read(80)
+ if len(h) == 80:
+ h = header_from_string(h)
+ return h
+
+ def read_chunk(self, index):
+ with open(self.headers_filename, 'rb') as f:
+ f.seek(index*2016*80)
+ chunk = f.read(2016*80)
+ return chunk.encode('hex')
+
+ def write_header(self, header, sync=True):
+ if not self.headers_data:
+ self.headers_offset = header.get('block_height')
+
+ self.headers_data += header_to_string(header).decode('hex')
+ if sync or len(self.headers_data) > 40*100:
+ self.flush_headers()
+
+ with self.cache_lock:
+ chunk_index = header.get('block_height')/2016
+ if self.chunk_cache.get(chunk_index):
+ self.chunk_cache.pop(chunk_index)
+
+ def pop_header(self):
+ # we need to do this only if we have not flushed
+ if self.headers_data:
+ self.headers_data = self.headers_data[:-40]
+
+ def flush_headers(self):
+ if not self.headers_data:
+ return
+ with open(self.headers_filename, 'rb+') as f:
+ f.seek(self.headers_offset*80)
+ f.write(self.headers_data)
+ self.headers_data = ''
+
+ def get_chunk(self, i):
# store them on disk; store the current chunk in memory
- pass
+ with self.cache_lock:
+ chunk = self.chunk_cache.get(i)
+ if not chunk:
+ chunk = self.read_chunk(i)
+ self.chunk_cache[i] = chunk
+
+ return chunk
+ def get_mempool_transaction(self, txid):
+ try:
+ raw_tx = self.bitcoind('getrawtransaction', [txid, 0])
+ except:
+ return None
- def get_transaction(self, txid, block_height=-1):
- raw_tx = self.bitcoind('getrawtransaction', [txid, 0, block_height])
vds = deserialize.BCDataStream()
vds.write(raw_tx.decode('hex'))
- return deserialize.parse_Transaction(vds)
+ try:
+ return deserialize.parse_Transaction(vds, is_coinbase=False)
+ except:
+ print_log("ERROR: cannot parse", txid)
+ return None
def get_history(self, addr, cache_only=False):
- with self.cache_lock: hist = self.history_cache.get( addr )
- if hist is not None: return hist
- if cache_only: return -1
+ with self.cache_lock:
+ hist = self.history_cache.get(addr)
+ if hist is not None:
+ return hist
+ if cache_only:
+ return -1
with self.dblock:
try:
- hist = self.deserialize(self.db.Get(addr))
- except:
+ hist = self.storage.get_history(addr)
+ is_known = True
+ except:
+ self.shared.stop()
+ raise
+ if hist:
+ is_known = True
+ else:
hist = []
-
- # should not be necessary
- hist.sort( key=lambda tup: tup[1])
- # check uniqueness too...
+ is_known = False
# add memory pool
- for txid in self.mempool_hist.get(addr,[]):
- hist.append((txid, 0))
+ with self.mempool_lock:
+ for txid in self.mempool_hist.get(addr, []):
+ hist.append({'tx_hash':txid, 'height':0})
+
+ # add something to distinguish between unused and empty addresses
+ if hist == [] and is_known:
+ hist = ['*']
- hist = map(lambda x: {'tx_hash':x[0], 'height':x[1]}, hist)
- with self.cache_lock: self.history_cache[addr] = hist
+ with self.cache_lock:
+ self.history_cache[addr] = hist
return hist
def get_status(self, addr, cache_only=False):
tx_points = self.get_history(addr, cache_only)
- if cache_only and tx_points == -1: return -1
+ if cache_only and tx_points == -1:
+ return -1
- if not tx_points: return None
+ if not tx_points:
+ return None
+ if tx_points == ['*']:
+ return '*'
status = ''
for tx in tx_points:
status += tx.get('tx_hash') + ':%d:' % tx.get('height')
- return hashlib.sha256( status ).digest().encode('hex')
-
+ return hashlib.sha256(status).digest().encode('hex')
- def get_merkle(self, target_hash, height):
+ def get_merkle(self, tx_hash, height):
block_hash = self.bitcoind('getblockhash', [height])
b = self.bitcoind('getblock', [block_hash])
- merkle = b.get('tx')
+ tx_list = b.get('tx')
+ tx_pos = tx_list.index(tx_hash)
+ merkle = map(hash_decode, tx_list)
+ target_hash = hash_decode(tx_hash)
s = []
while len(merkle) != 1:
- if len(merkle)%2: merkle.append( merkle[-1] )
+ if len(merkle) % 2:
+ merkle.append(merkle[-1])
n = []
while merkle:
- new_hash = Hash( merkle[0] + merkle[1] )
+ new_hash = Hash(merkle[0] + merkle[1])
if merkle[0] == target_hash:
- s.append( merkle[1])
+ s.append(hash_encode(merkle[1]))
target_hash = new_hash
elif merkle[1] == target_hash:
- s.append( merkle[0])
+ s.append(hash_encode(merkle[0]))
target_hash = new_hash
- n.append( new_hash )
+ n.append(new_hash)
merkle = merkle[2:]
merkle = n
- return {"block_height":height, "merkle":s, "pos":tx_pos}
+ return {"block_height": height, "merkle": s, "pos": tx_pos}
-
+ def add_to_history(self, addr, tx_hash, tx_pos, tx_height):
+ # keep it sorted
+ s = self.serialize_item(tx_hash, tx_pos, tx_height) + 40*chr(0)
+ assert len(s) == 80
- def import_block(self, block, block_hash, block_height):
- #print "importing block", block_hash, block_height
+ serialized_hist = self.batch_list[addr]
- txlist = block.get('tx')
- batch_list = {}
+ l = len(serialized_hist)/80
+ for i in range(l-1, -1, -1):
+ item = serialized_hist[80*i:80*(i+1)]
+ item_height = int(rev_hex(item[36:39].encode('hex')), 16)
+ if item_height <= tx_height:
+ serialized_hist = serialized_hist[0:80*(i+1)] + s + serialized_hist[80*(i+1):]
+ break
+ else:
+ serialized_hist = s + serialized_hist
+
+ self.batch_list[addr] = serialized_hist
+
+ # backlink
+ txo = (tx_hash + int_to_hex(tx_pos, 4)).decode('hex')
+ self.batch_txio[txo] = addr
- for txid in txlist:
- tx = self.get_transaction(txid, block_height)
- for x in tx.get('inputs') + tx.get('outputs'):
- addr = x.get('address')
- serialized_hist = batch_list.get(addr)
- if serialized_hist is None:
- try:
- serialized_hist = self.db.Get(addr)
- except:
- serialized_hist = ''
-
- s = (txid + int_to_hex(block_height, 4)).decode('hex')
-
- found = False
- for i in range(len(serialized_hist)/36):
- item = serialized_hist[-36*(1+i):]
- item = item[0:36]
-
- h = int( rev_hex( item[32:36].encode('hex') ), 16 )
- if h > block_height:
- txhash = item[0:32].encode('hex')
- print_log('warning: non-chronological order at', addr, (txhash, h), (txid, block_height))
- hist = self.deserialize(serialized_hist)
- print_log(hist)
- hist.sort( key=lambda tup: tup[1])
- while hist:
- last = hist[-1]
- if last[1] > block_height:
- hist = hist[0:-1]
- else:
- break
- found = (txhash, h) in hist
- print_log('new sorted hist', hist, found)
- serialized_hist = self.serialize(hist)
- break
- elif h < block_height:
- break
- elif item == s:
- found = True
- break
-
- if not found:
- serialized_hist += s
-
- batch_list[addr] = serialized_hist
-
- # batch write
- batch = leveldb.WriteBatch()
- for addr, hist in batch_list.items():
- batch.Put(addr, serialized_hist)
- batch.Put('0', self.serialize( [(block_hash, block_height)] ) )
- self.db.Write(batch, sync = True)
-
- # invalidate cache
- for addr in batch_list.keys(): self.update_history_cache(addr)
-
- return len(txlist)
-
-
-
- def revert_block(self, block, block_hash, block_height):
+
+
+
+
+ def deserialize_block(self, block):
txlist = block.get('tx')
- batch_list = {}
+ tx_hashes = [] # ordered txids
+ txdict = {} # deserialized tx
+ is_coinbase = True
+ for raw_tx in 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)
+ 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
- for txid in txlist:
- tx = self.get_transaction(txid, block_height)
- for x in tx.get('inputs') + tx.get('outputs'):
- addr = x.get('address')
- hist = batch_list.get(addr)
- if hist is None:
- try:
- hist = self.deserialize(self.db.Get(addr))
- except:
- hist = []
+ def import_block(self, block, block_hash, block_height, sync, revert=False):
+
+ touched_addr = set([])
+
+ # deserialize transactions
+ tx_hashes, txdict = self.deserialize_block(block)
- if (txid, block_height) in hist:
- hist.remove( (txid, block_height) )
- else:
- print "error: txid not found during block revert", txid, block_height
+ # undo info
+ if revert:
+ undo_info = self.storage.get_undo_info(block_height)
+ tx_hashes.reverse()
+ else:
+ undo_info = {}
+
+ for txid in tx_hashes: # must be ordered
+ tx = txdict[txid]
+ if not revert:
+ undo = self.storage.import_transaction(txid, tx, block_height, touched_addr)
+ undo_info[txid] = undo
+ else:
+ undo = undo_info.pop(txid)
+ self.storage.revert_transaction(txid, tx, block_height, touched_addr, undo)
- batch_list[addr] = hist
+ if revert:
+ assert undo_info == {}
- # batch write
- batch = leveldb.WriteBatch()
- for addr, hist in batch_list.items():
- batch.Put(addr, self.serialize(hist))
- batch.Put('0', self.serialize( [(block_hash, block_height)] ) )
- self.db.Write(batch, sync = True)
+ # add undo info
+ if not revert:
+ self.storage.write_undo_info(block_height, self.bitcoind_height, undo_info)
- # invalidate cache
- for addr in batch_list.keys(): self.update_history_cache(addr)
+ # add the max
+ self.storage.db_undo.put('height', repr( (block_hash, block_height, self.storage.db_version) ))
- return len(txlist)
+ for addr in touched_addr:
+ self.invalidate_cache(addr)
+ self.storage.update_hashes()
- def add_request(self, request):
+ def add_request(self, session, 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)
+ if self.process(session, request, cache_only=True) == -1:
+ self.queue.put((session, request))
+ def do_subscribe(self, method, params, session):
+ with self.watch_lock:
+ if method == 'blockchain.numblocks.subscribe':
+ if session not in self.watch_blocks:
+ self.watch_blocks.append(session)
- def process(self, request, cache_only = False):
- #print "abe process", request
+ elif method == 'blockchain.headers.subscribe':
+ if session not in self.watch_headers:
+ self.watch_headers.append(session)
+ elif method == 'blockchain.address.subscribe':
+ address = params[0]
+ l = self.watched_addresses.get(address)
+ if l is None:
+ self.watched_addresses[address] = [session]
+ elif session not in l:
+ l.append(session)
+
+
+ def do_unsubscribe(self, method, params, session):
+ with self.watch_lock:
+ if method == 'blockchain.numblocks.subscribe':
+ if session in self.watch_blocks:
+ self.watch_blocks.remove(session)
+ elif method == 'blockchain.headers.subscribe':
+ if session in self.watch_headers:
+ self.watch_headers.remove(session)
+ elif method == "blockchain.address.subscribe":
+ addr = params[0]
+ l = self.watched_addresses.get(addr)
+ if not l:
+ return
+ if session in l:
+ l.remove(session)
+ if session in l:
+ print "error rc!!"
+ self.shared.stop()
+ if l == []:
+ self.watched_addresses.pop(addr)
+
+
+ def process(self, session, request, cache_only=False):
+
message_id = request['id']
method = request['method']
- params = request.get('params',[])
+ params = request.get('params', [])
result = None
error = None
- if method == 'blockchain2.numblocks.subscribe':
- result = self.height
+ if method == 'blockchain.numblocks.subscribe':
+ result = self.storage.height
- elif method == 'blockchain2.headers.subscribe':
+ elif method == 'blockchain.headers.subscribe':
result = self.header
- elif method == 'blockchain2.address.subscribe':
+ elif method == 'blockchain.address.subscribe':
try:
- address = params[0]
+ address = str(params[0])
result = self.get_status(address, cache_only)
- self.watch_address(address)
except BaseException, e:
error = str(e) + ': ' + address
- print_log( "error:", error )
+ print_log("error:", error)
- elif method == 'blockchain2.address.subscribe2':
+ elif method == 'blockchain.address.get_history':
try:
- address = params[0]
- result = self.get_status2(address, cache_only)
- self.watch_address(address)
+ address = str(params[0])
+ result = self.get_history(address, cache_only)
except BaseException, e:
error = str(e) + ': ' + address
- print_log( "error:", error )
+ print_log("error:", error)
- elif method == 'blockchain2.address.get_history':
+ elif method == 'blockchain.address.get_balance':
try:
- address = params[0]
- result = self.get_history( address, cache_only )
+ address = str(params[0])
+ result = self.storage.get_balance(address)
+ except BaseException, e:
+ error = str(e) + ': ' + address
+ print_log("error:", error)
+
+ elif method == 'blockchain.address.get_proof':
+ try:
+ address = str(params[0])
+ result = self.storage.get_proof(address)
except BaseException, e:
error = str(e) + ': ' + address
- print_log( "error:", error )
+ print_log("error:", error)
+
+ elif method == 'blockchain.address.listunspent':
+ try:
+ address = str(params[0])
+ result = self.storage.listunspent(address)
+ except BaseException, e:
+ 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, txid, pos)
- elif method == 'blockchain2.block.get_header':
- if cache_only:
+ elif method == 'blockchain.block.get_header':
+ if cache_only:
result = -1
else:
try:
- height = params[0]
- result = self.get_header( height )
+ height = int(params[0])
+ result = self.get_header(height)
except BaseException, e:
- error = str(e) + ': %d'% height
- print_log( "error:", error )
-
- elif method == 'blockchain2.block.get_chunk':
+ 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.get_chunk( index )
+ index = int(params[0])
+ result = self.get_chunk(index)
except BaseException, e:
- error = str(e) + ': %d'% index
- print_log( "error:", error)
+ error = str(e) + ': %d' % index
+ print_log("error:", error)
- elif method == 'blockchain2.transaction.broadcast':
- txo = self.bitcoind('sendrawtransaction', params[0])
- print_log( "sent tx:", txo )
- result = txo
+ elif method == 'blockchain.transaction.broadcast':
+ try:
+ txo = self.bitcoind('sendrawtransaction', params)
+ print_log("sent tx:", txo)
+ result = txo
+ except BaseException, e:
+ result = str(e) # do not send an error
+ print_log("error:", result, params)
- elif method == 'blockchain2.transaction.get_merkle':
+ elif method == 'blockchain.transaction.get_merkle':
if cache_only:
result = -1
else:
try:
tx_hash = params[0]
tx_height = params[1]
- result = self.get_merkle(tx_hash, tx_height)
+ result = self.get_merkle(tx_hash, tx_height)
except BaseException, e:
- error = str(e) + ': ' + tx_hash
- print_log( "error:", error )
-
- elif method == 'blockchain2.transaction.get':
+ error = str(e) + ': ' + repr(params)
+ print_log("get_merkle error:", error)
+
+ elif method == 'blockchain.transaction.get':
try:
tx_hash = params[0]
- height = params[1]
- result = self.bitcoind('getrawtransaction', [tx_hash, 0, height] )
+ result = self.bitcoind('getrawtransaction', [tx_hash, 0])
except BaseException, e:
- error = str(e) + ': ' + tx_hash
- print_log( "error:", error )
+ error = str(e) + ': ' + repr(params)
+ print_log("tx get error:", error)
else:
- error = "unknown method:%s"%method
+ error = "unknown method:%s" % method
- if cache_only and result == -1: return -1
+ if cache_only and result == -1:
+ return -1
if error:
- response = { 'id':message_id, 'error':error }
- self.push_response(response)
+ self.push_response(session, {'id': message_id, 'error': error})
elif result != '':
- response = { 'id':message_id, 'result':result }
- self.push_response(response)
-
-
- def watch_address(self, addr):
- if addr not in self.watched_addresses:
- self.watched_addresses.append(addr)
-
+ self.push_response(session, {'id': message_id, 'result': result})
- def last_hash(self):
- return self.block_hashes[-1]
+ 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
- def catch_up(self):
-
- t1 = time.time()
+ 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):
+
+ prev_root_hash = None
while not self.shared.stopped():
+ self.mtime('')
+
# are we done yet?
info = self.bitcoind('getinfo')
- bitcoind_height = info.get('blocks')
- bitcoind_block_hash = self.bitcoind('getblockhash', [bitcoind_height])
- if self.last_hash() == bitcoind_block_hash: break
+ self.bitcoind_height = info.get('blocks')
+ bitcoind_block_hash = self.bitcoind('getblockhash', [self.bitcoind_height])
+ if self.storage.last_hash == bitcoind_block_hash:
+ self.up_to_date = True
+ break
# not done..
- block_hash = self.bitcoind('getblockhash', [self.height+1])
- block = self.bitcoind('getblock', [block_hash])
+ 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')
+
+ # 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
- if block.get('previousblockhash') == self.last_hash():
+ if (next_block.get('previousblockhash') == self.storage.last_hash) and not revert:
- self.import_block(block, block_hash, self.height+1)
+ prev_root_hash = self.storage.get_root_hash()
- if (self.height+1)%100 == 0:
- t2 = time.time()
- print_log( "bc2: block %d (%.3fs)"%( self.height+1, t2 - t1 ) )
- t1 = t2
+ 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)
+ self.storage.last_hash = next_block_hash
+ self.mtime('import')
+
+ if self.storage.height % 1000 == 0 and not sync:
+ t_daemon = self.mtimes.get('daemon')
+ t_import = self.mtimes.get('import')
+ print_log("catch_up: block %d (%.3fs %.3fs)" % (self.storage.height, t_daemon, t_import), self.storage.get_root_hash().encode('hex'))
+ self.mtimes['daemon'] = 0
+ self.mtimes['import'] = 0
- self.height = self.height + 1
- self.block_hashes.append(block_hash)
- self.block_hashes = self.block_hashes[-10:]
-
else:
+
# revert current block
- print_log( "bc2: reorg", self.height, block.get('previousblockhash'), self.last_hash() )
- block_hash = self.last_hash()
- block = self.bitcoind('getblock', [block_hash])
- self.height = self.height -1
- self.block_hashes.remove(block_hash)
- self.revert_block(block, self.last_hash(), self.height)
-
+ block = self.getfullblock(self.storage.last_hash)
+ 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()
+ self.flush_headers()
- self.header = self.block2header(self.bitcoind('getblock', [self.last_hash()]))
+ self.storage.height -= 1
-
+ # read previous header from disk
+ 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
-
- def memorypool_update(self):
- mempool_hashes = self.bitcoind('getrawmempool')
+ 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" )
+ self.storage.close()
+
+
+ def memorypool_update(self):
+ mempool_hashes = set(self.bitcoind('getrawmempool'))
+ touched_addresses = set([])
for tx_hash in mempool_hashes:
- if tx_hash in self.known_mempool_hashes: continue
- self.known_mempool_hashes.append(tx_hash)
+ if tx_hash in self.mempool_hashes:
+ continue
- tx = self.get_transaction(tx_hash)
- if not tx: continue
+ tx = self.get_mempool_transaction(tx_hash)
+ 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)
- for x in tx.get('inputs') + tx.get('outputs'):
+ for x in tx.get('outputs'):
addr = x.get('address')
- hist = self.mempool_hist.get(addr, [])
- if tx_hash not in hist:
- hist.append( tx_hash )
- self.mempool_hist[addr] = hist
- self.update_history_cache(addr)
+ if addr and addr not in mpa:
+ mpa.append(addr)
+ 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)
+ 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:
+ h = new_mempool_hist.get(addr, [])
+ if tx_hash not in h:
+ h.append(tx_hash)
+ new_mempool_hist[addr] = h
- self.known_mempool_hashes = mempool_hashes
+ with self.mempool_lock:
+ self.mempool_hist = new_mempool_hist
+ # invalidate cache for touched addresses
+ for addr in touched_addresses:
+ self.invalidate_cache(addr)
- def update_history_cache(self, address):
+
+ def invalidate_cache(self, address):
with self.cache_lock:
- if self.history_cache.has_key(address):
- print_log( "cache: invalidating", address )
+ if address in self.history_cache:
+ print_log("cache: invalidating", address)
self.history_cache.pop(address)
+ with self.watch_lock:
+ sessions = self.watched_addresses.get(address)
+ if sessions:
+ # TODO: update cache here. if new value equals cached value, do not send notification
+ self.address_queue.put((address,sessions))
def main_iteration(self):
-
- if self.shared.stopped():
- print_log( "bc2 terminating")
+ if self.shared.stopped():
+ print_log("blockchain processor terminating")
+ self.storage.close()
return
with self.dblock:
t1 = time.time()
self.catch_up()
t2 = time.time()
- print_log( "blockchain: %d (%.3fs)"%( self.height+1, t2 - t1 ) )
+
self.memorypool_update()
- if self.sent_height != self.height:
- self.sent_height = self.height
- self.push_response({ 'id': None, 'method':'blockchain2.numblocks.subscribe', 'params':[self.height] })
+ if self.sent_height != self.storage.height:
+ self.sent_height = self.storage.height
+ for session in self.watch_blocks:
+ self.push_response(session, {
+ 'id': None,
+ 'method': 'blockchain.numblocks.subscribe',
+ 'params': [self.storage.height],
+ })
if self.sent_header != self.header:
+ print_log("blockchain: %d (%.3fs)" % (self.storage.height, t2 - t1))
self.sent_header = self.header
- self.push_response({ 'id': None, 'method':'blockchain2.headers.subscribe', 'params':[self.header] })
+ for session in self.watch_headers:
+ self.push_response(session, {
+ 'id': None,
+ 'method': 'blockchain.headers.subscribe',
+ 'params': [self.header],
+ })
while True:
try:
- addr = self.address_queue.get(False)
+ addr, sessions = self.address_queue.get(False)
except:
break
- if addr in self.watched_addresses:
- status = self.get_status( addr )
- self.push_response({ 'id': None, 'method':'blockchain.address.subscribe', 'params':[addr, status] })
+ status = self.get_status(addr)
+ for session in sessions:
+ self.push_response(session, {
+ 'id': None,
+ 'method': 'blockchain.address.subscribe',
+ 'params': [addr, status],
+ })
- if not self.shared.stopped():
+ if not self.shared.stopped():
threading.Timer(10, self.main_iteration).start()
else:
- print_log( "bc2 terminating" )
-
-
-
-
+ print_log("blockchain processor terminating")
git://git.novaco.in / electrum-server.git / blobdiff