def verify_app_pre_reqs(splashScreen, app):
def progress_ui(status_update):
splashScreen.showMessage(status_update)
app.processEvents()
progress_ui("Performing required startup tasks")
client = AuthServiceProxy(url_for_client(), timeout=BTC_CONNECTION_TIMEOUT)
try:
current_count = client.getblockcount()
except Exception as e:
return ("Could not connect to bitcoind", traceback.format_exc())
progress_ui("bitcoind connection established")
# splashScreen.bar.setValue(25) # step 1 of 5 complete
if config.TESTNET:
url = 'http://blockexplorer.com/testnet/q/getblockcount'
else:
url = 'https://blockchain.info/q/getblockcount'
def get_last_block():
return urllib.request.urlopen(url).read().decode('utf-8')
last_block = get_last_block()
if current_count != last_block:
progress_ui("Bitcoind blockchain %d blocks behind" % (int(last_block) - int(current_count)))
else:
progress_ui("Bitcoind blockchain up to date")
while current_count != last_block:
try:
current_count = client.getblockcount()
last_block = int(get_last_block())
if current_count == last_block:
progress_ui("Bitcoind blockchain up to date")
break
progress_ui("Current blockchain progress: %s/%s" % (current_count, last_block))
time.sleep(3)
except Exception as e:
return 'Lost bitcoind connection', traceback.format_exc()
if config.START_RPC_SERVER:
progress_ui("Launching counterpartyd")
db = util.connect_to_db()
api_server = api.APIServer()
api_server.daemon = True
api_server.start()
api_server.join(4) # wait 3 seconds, if the thread is dead that means an exception was thrown
if api_server.isAlive():
# fork off in another thread
t = threading.Thread(target=lambda: blocks.follow(db))
t.daemon = True
t.start()
else:
return "Cannot start the API subsystem. Is counterpartyd already running, or is " \
"something else listening on port %s?" % config.RPC_PORT, ''
# splashScreen.bar.setValue(75)
# we've now started up the webserver, finally just wait until the db is in a good state
client = XCPClient()
while True:
try:
response = client.get_running_info()
if response['db_caught_up']:
progress_ui("Counterpartyd finished parsing blockchain")
break
else:
current_block = response['last_block']['block_index'] or 0
current_block = int(current_block)
progress_ui("Current counterpartyd progress: %d/%s" % (current_block, current_count))
time.sleep(3)
except Exception as e:
return 'Lost counterpartyd RPC connection', traceback.format_exc()
return None
