self.dblock = threading.Lock()
try:
- self.db = leveldb.LevelDB(self.dbpath)
+ self.db = leveldb.LevelDB(self.dbpath, paranoid_checks=True)
except:
traceback.print_exc(file=sys.stdout)
self.shared.stop()
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.is_test = False
self.sent_height = 0
shared.stop()
sys.exit(0)
- print_log("blockchain is up to date.")
+ print_log("Blockchain is up to date.")
+ self.memorypool_update()
+ print_log("Memory pool initialized.")
threading.Timer(10, self.main_iteration).start()
def memorypool_update(self):
mempool_hashes = self.bitcoind('getrawmempool')
+ touched_addresses = []
for tx_hash in mempool_hashes:
if tx_hash in self.mempool_hashes:
continue
if not tx:
continue
+ mpa = self.mempool_addresses.get(tx_hash, [])
for x in tx.get('inputs'):
- txi = (x.get('prevout_hash') + int_to_hex(x.get('prevout_n'), 4)).decode('hex')
- try:
- addr = self.db.Get(txi)
- except:
- continue
- l = self.mempool_addresses.get(tx_hash, [])
- if addr not in l:
- l.append(addr)
- self.mempool_addresses[tx_hash] = l
+ # 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.append(addr)
for x in tx.get('outputs'):
addr = x.get('address')
- l = self.mempool_addresses.get(tx_hash, [])
- if addr not in l:
- l.append(addr)
- self.mempool_addresses[tx_hash] = l
+ if addr and addr not in mpa:
+ mpa.append(addr)
+ touched_addresses.append(addr)
+ self.mempool_addresses[tx_hash] = mpa
self.mempool_hashes.append(tx_hash)
# remove older entries from mempool_hashes
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.append(addr)
# rebuild mempool histories
new_mempool_hist = {}
h.append(tx_hash)
new_mempool_hist[addr] = h
- # invalidate cache for mempool addresses whose mempool history has changed
- new_mempool_hist_keys = new_mempool_hist.keys()
- self_mempool_hist_keys = self.mempool_hist.keys()
-
- for addr in new_mempool_hist_keys:
- if addr in self_mempool_hist_keys:
- if self.mempool_hist[addr] != new_mempool_hist[addr]:
- self.invalidate_cache(addr)
- else:
- self.invalidate_cache(addr)
-
- # invalidate cache for addresses that are removed from mempool ?
- # this should not be necessary if they go into a block, but they might not
- for addr in self_mempool_hist_keys:
- if addr not in new_mempool_hist_keys:
- self.invalidate_cache(addr)
-
-
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 invalidate_cache(self, address):
with self.cache_lock:
if address in self.history_cache:
self.history_cache.pop(address)
if address in self.watched_addresses:
+ # TODO: update cache here. if new value equals cached value, do not send notification
self.address_queue.put(address)
def main_iteration(self):
t2 = time.time()
self.memorypool_update()
- t3 = time.time()
- # print "mempool:", len(self.mempool_addresses), len(self.mempool_hist), "%.3fs"%(t3 - t2)
if self.sent_height != self.height:
self.sent_height = self.height