def __init__(self): LOG.info('Building a new BGP protocol instance') self.receive_buffer = b'' self.message = BMPMessage(BMP.cap_dict) self.client_ip = None self.client_port = None
def __init__(self): LOG.info('Building a new BGP protocol instance') self.receive_buffer = '' self.message = BMPMessage() self.bgp_peer_dict = {} self.client_ip = None self.client_port = None
def __init__(self): LOG.info('Building a new BGP protocol instance') self.receive_buffer = '' self.message = BMPMessage() self.msg_file_path = None self.bgp_peer_dict = {} self.client_info = None self.channel = None
def parse_buffer(self): """ """ buf = self.receive_buffer if len(buf) < bmp_cons.HEADER_LEN: # Every BMP message is at least 44 octets. Maybe the rest # hasn't arrived yet. return False # Parse the header # +-+-+-+-+-+-+-+-+ # | Version | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Message Length | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Msg. Type | # +---------------+ version, length, msg_type = struct.unpack('!BIB', buf[:6]) if version != bmp_cons.VERSION: # close the connection raise excp.BMPVersionError(local_version=bmp_cons.VERSION, remote_version=version) if msg_type not in bmp_cons.MSG_TYPE_STR.keys(): raise excp.UnknownMessageTypeError(type=msg_type) if length > len(buf): # the hold message does not comming yet. return False msg_value = buf[6:length] self.message.msg_type = msg_type LOG.debug('Received BMP message, type=%s' % msg_type) self.message.raw_body = msg_value LOG.debug('Decoding message...') try: results = self.message.consume() if results: # write msg file self.factory.handler.on_message_received( self.client_ip, self.client_port, results, msg_type) else: LOG.error('decoding message failed.') except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) LOG.debug('Finished decoding.') self.message = BMPMessage() LOG.debug( '-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+' ) self.receive_buffer = self.receive_buffer[length:] return True
def __init__(self): LOG.info('Building a new BGP protocol instance') self.receive_buffer = b'' self.message = BMPMessage() self.bgp_peer_dict = {} self.client_ip = None self.client_port = None
def parse_buffer(self): """ """ buf = self.receive_buffer if len(buf) < bmp_cons.HEADER_LEN: # Every BMP message is at least 44 octets. Maybe the rest # hasn't arrived yet. return False # Parse the header # +-+-+-+-+-+-+-+-+ # | Version | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Message Length | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Msg. Type | # +---------------+ version, length, msg_type = struct.unpack('!BIB', buf[:6]) if version != bmp_cons.VERSION: # close the connection raise excp.BMPVersionError(local_version=bmp_cons.VERSION, remote_version=version) if msg_type not in bmp_cons.MSG_TYPE_STR.keys(): raise excp.UnknownMessageTypeError(type=msg_type) if length > len(buf): # the hold message does not comming yet. return False msg_value = buf[6:length] self.message.msg_type = msg_type LOG.debug('Received BMP message, type=%s' % msg_type) self.message.raw_body = msg_value LOG.debug('Decoding message...') try: results = self.message.consume() if results: # write msg file self.factory.handler.on_message_received( self.client_ip, self.client_port, results, msg_type) else: LOG.error('decoding message failed.') except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) LOG.debug('Finished decoding.') self.message = BMPMessage() LOG.debug('-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+') self.receive_buffer = self.receive_buffer[length:] return True
class BMP(protocol.Protocol): """ BGP Monitoring Protocol """ def __init__(self): LOG.info('Building a new BGP protocol instance') self.receive_buffer = b'' self.message = BMPMessage() self.bgp_peer_dict = {} self.client_ip = None self.client_port = None def connectionMade(self): """ TCP Conection made """ self.client_ip = self.transport.getPeer().host self.client_port = self.transport.getPeer().port LOG.info("BMP Client %s:%s connected.", self.client_ip, self.client_port) self.factory.handler.on_connection_made(self.client_ip, self.client_port) def connectionLost(self, reason): """ TCP conection lost :param reason: """ LOG.info( "BMP Client %s disconnected,Connection was closed cleanly: %s", self.transport.getPeer().host, reason.getErrorMessage()) self.client_ip = self.transport.getPeer().host self.client_port = self.transport.getPeer().port self.factory.handler.on_connection_lost(self.client_ip, self.client_port) def closeConnection(self): """Close the connection""" if self.transport.connected: self.transport.loseConnection() def dataReceived(self, data): """ Data has been received. :param data: """ self.receive_buffer += data try: while self.parse_buffer(): pass except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) self.closeConnection() def parse_buffer(self): """ """ buf = self.receive_buffer if len(buf) < bmp_cons.HEADER_LEN: # Every BMP message is at least 44 octets. Maybe the rest # hasn't arrived yet. return False # Parse the header # +-+-+-+-+-+-+-+-+ # | Version | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Message Length | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Msg. Type | # +---------------+ version, length, msg_type = struct.unpack('!BIB', buf[:6]) if version != bmp_cons.VERSION: # close the connection raise excp.BMPVersionError(local_version=bmp_cons.VERSION, remote_version=version) if msg_type not in bmp_cons.MSG_TYPE_STR.keys(): raise excp.UnknownMessageTypeError(type=msg_type) if length > len(buf): # the hold message does not comming yet. return False msg_value = buf[6:length] self.message.msg_type = msg_type LOG.debug('Received BMP message, type=%s' % msg_type) self.message.raw_body = msg_value LOG.debug('Decoding message...') try: results = self.message.consume() if results: # write msg file self.factory.handler.on_message_received( self.client_ip, self.client_port, results, msg_type) else: LOG.error('decoding message failed.') except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) LOG.debug('Finished decoding.') self.message = BMPMessage() LOG.debug( '-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+' ) self.receive_buffer = self.receive_buffer[length:] return True
class BMP(protocol.Protocol): """ BGP Monitoring Protocol """ def __init__(self): LOG.info('Building a new BGP protocol instance') self.receive_buffer = '' self.message = BMPMessage() self.msg_file_path = None self.bgp_peer_dict = {} self.client_info = None self.channel = None def connectionMade(self): """ TCP Conection made """ LOG.info( "BMP Client %s:%s connected." % (self.transport.getPeer().host, self.transport.getPeer().port)) self.client_info = '%s:%s' % (self.transport.getPeer().host, self.transport.getPeer().port) file_path = os.path.join(self.factory.msg_path, self.transport.getPeer().host) if not os.path.exists(file_path): try: os.makedirs(file_path) LOG.info('create directory: %s' % file_path) except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) sys.exit() self.msg_file_path = file_path def connectionLost(self, reason): """ TCP conection lost :param reason: """ LOG.info("BMP Client %s disconnected,Connection was closed cleanly." % self.transport.getPeer().host) self.client_info = '%s:%s' % (self.transport.getPeer().host, self.transport.getPeer().port) def closeConnection(self): """Close the connection""" if self.transport.connected: self.transport.loseConnection() @staticmethod def init_statistic(): statistic_dict = {} for msg_type in bmp_cons.MSG_TYPE_STR: statistic_dict[bmp_cons.MSG_TYPE_STR[msg_type]] = 0 return statistic_dict def dataReceived(self, data): """ Data has been received. :param data: """ self.receive_buffer += data try: while self.parse_buffer(): pass except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) self.closeConnection() def parse_buffer(self): buf = self.receive_buffer if len(buf) < bmp_cons.HEADER_LEN: # Every BMP message is at least 44 octets. Maybe the rest # hasn't arrived yet. return False # Parse the header # +-+-+-+-+-+-+-+-+ # | Version | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Message Length | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Msg. Type | # +---------------+ version, length, msg_type = struct.unpack('!BIB', buf[:6]) if version != bmp_cons.VERSION: # close the connection raise excp.BMPVersionError(local_version=bmp_cons.VERSION, remote_version=version) if msg_type not in bmp_cons.MSG_TYPE_STR.keys(): raise excp.UnknownMessageTypeError(type=msg_type) if length > len(buf): # the hold message does not comming yet. return False msg_value = buf[6:length] self.message.msg_type = msg_type LOG.debug('Received BMP message, type=%s' % msg_type) self.message.raw_body = msg_value LOG.debug('Decoding message...') try: results = self.message.consume() if results: # write msg file self.write_msg_file(msg_type, results) else: LOG.error('decoding message failed.') except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) LOG.debug('Finished decoding.') self.message = BMPMessage() LOG.debug( '-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+' ) self.receive_buffer = self.receive_buffer[length:] return True def write_msg_file(self, msg_type, msg): """ write msg to file """ if msg_type in [4, 5, 6]: return peer_ip = msg[0]['addr'] if peer_ip not in self.bgp_peer_dict: self.bgp_peer_dict[peer_ip] = {} peer_msg_path = os.path.join(self.msg_file_path, peer_ip) if not os.path.exists(peer_msg_path): # this peer first come out # create a peer path and open the first message file os.makedirs(peer_msg_path) LOG.info('Create directory for peer: %s' % peer_msg_path) msg_file_name = os.path.join(peer_msg_path, '%s.msg' % time.time()) self.bgp_peer_dict[peer_ip]['msg_seq'] = 1 else: # this peer is not first come out # find the latest message file and get the last message sequence number file_list = os.listdir(peer_msg_path) file_list.sort() msg_file_name = os.path.join(peer_msg_path, file_list[-1]) self.bgp_peer_dict[peer_ip]['msg_seq'] = self.get_last_seq( msg_file_name) self.bgp_peer_dict[peer_ip]['file'] = open(msg_file_name, 'a') if msg_type == 0: # route monitoring message if msg[0]['flags']['L']: # pos-policy RIB msg_list = [ time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], 130, msg[1], (1, 1) ] else: # pre-policy RIB msg_list = [ time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], msg[1][0], msg[1][1], (1, 1) ] self.bgp_peer_dict[peer_ip]['file'].write(str(msg_list) + '\n') self.bgp_peer_dict[peer_ip]['msg_seq'] += 1 self.bgp_peer_dict[peer_ip]['file'].flush() elif msg_type == 1: # statistic message msg_list = [ time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], 129, msg[1], (0, 0) ] self.bgp_peer_dict[peer_ip]['file'].write(str(msg_list) + '\n') self.bgp_peer_dict[peer_ip]['msg_seq'] += 1 self.bgp_peer_dict[peer_ip]['file'].flush() elif msg_type == 2: # peer down message msg_list = [ time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], 3, msg[1], (0, 0) ] self.bgp_peer_dict[peer_ip]['file'].write(str(msg_list) + '\n') self.bgp_peer_dict[peer_ip]['msg_seq'] += 1 self.bgp_peer_dict[peer_ip]['file'].flush() if self.channel: self.channel.send_message(exchange='', message={ 'type': 7, 'msg_type': 2, 'peer_ip': peer_ip }) elif msg_type == 3: # peer up message msg_list = [ time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], 1, msg[1]['received_open_msg'], (0, 0) ] self.bgp_peer_dict[peer_ip]['file'].write(str(msg_list) + '\n') self.bgp_peer_dict[peer_ip]['msg_seq'] += 1 self.bgp_peer_dict[peer_ip]['file'].flush() if self.channel: self.channel.send_message(exchange='', message={ 'type': 7, 'msg_type': 3, 'peer_ip': peer_ip }) @staticmethod def get_last_seq(file_name): """ Get the last sequence number in the log file. """ lines_2find = 1 f = open(file_name) f.seek(0, 2) # go to the end of the file bytes_in_file = f.tell() lines_found, total_bytes_scanned = 0, 0 while (lines_2find + 1 > lines_found and bytes_in_file > total_bytes_scanned): byte_block = min(1024, bytes_in_file - total_bytes_scanned) f.seek(-(byte_block + total_bytes_scanned), 2) total_bytes_scanned += byte_block lines_found += f.read(1024).count('\n') f.seek(-total_bytes_scanned, 2) line_list = list(f.readlines()) last_line = line_list[-lines_2find:][0] try: last_line = eval(last_line) return last_line[1] + 1 except Exception as e: LOG.info(e) return 1
class BMP(protocol.Protocol): """ BGP Monitoring Protocol """ def __init__(self): LOG.info('Building a new BGP protocol instance') self.receive_buffer = b'' self.message = BMPMessage() self.bgp_peer_dict = {} self.client_ip = None self.client_port = None def connectionMade(self): """ TCP Conection made """ self.client_ip = self.transport.getPeer().host self.client_port = self.transport.getPeer().port LOG.info( "BMP Client %s:%s connected.", self.client_ip, self.client_port) self.factory.handler.on_connection_made( self.client_ip, self.client_port) def connectionLost(self, reason): """ TCP conection lost :param reason: """ LOG.info( "BMP Client %s disconnected,Connection was closed cleanly: %s", self.transport.getPeer().host, reason.getErrorMessage() ) self.client_ip = self.transport.getPeer().host self.client_port = self.transport.getPeer().port self.factory.handler.on_connection_lost( self.client_ip, self.client_port ) def closeConnection(self): """Close the connection""" if self.transport.connected: self.transport.loseConnection() def dataReceived(self, data): """ Data has been received. :param data: """ self.receive_buffer += data try: while self.parse_buffer(): pass except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) self.closeConnection() def parse_buffer(self): """ """ buf = self.receive_buffer if len(buf) < bmp_cons.HEADER_LEN: # Every BMP message is at least 44 octets. Maybe the rest # hasn't arrived yet. return False # Parse the header # +-+-+-+-+-+-+-+-+ # | Version | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Message Length | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Msg. Type | # +---------------+ version, length, msg_type = struct.unpack('!BIB', buf[:6]) if version != bmp_cons.VERSION: # close the connection raise excp.BMPVersionError(local_version=bmp_cons.VERSION, remote_version=version) if msg_type not in bmp_cons.MSG_TYPE_STR.keys(): raise excp.UnknownMessageTypeError(type=msg_type) if length > len(buf): # the hold message does not comming yet. return False msg_value = buf[6:length] self.message.msg_type = msg_type LOG.debug('Received BMP message, type=%s' % msg_type) self.message.raw_body = msg_value LOG.debug('Decoding message...') try: results = self.message.consume() if results: # write msg file self.factory.handler.on_message_received( self.client_ip, self.client_port, results, msg_type) else: LOG.error('decoding message failed.') except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) LOG.debug('Finished decoding.') self.message = BMPMessage() LOG.debug('-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+') self.receive_buffer = self.receive_buffer[length:] return True
class BMP(protocol.Protocol): """ BGP Monitoring Protocol """ def __init__(self): LOG.info('Building a new BGP protocol instance') self.receive_buffer = '' self.message = BMPMessage() self.msg_file_path = None self.bgp_peer_dict = {} self.client_info = None def connectionMade(self): """ TCP Conection made """ LOG.info("BMP Client %s:%s connected." % (self.transport.getPeer().host, self.transport.getPeer().port)) self.client_info = '%s:%s' % (self.transport.getPeer().host, self.transport.getPeer().port) file_path = os.path.join(self.factory.msg_path, self.transport.getPeer().host) if not os.path.exists(file_path): try: os.makedirs(file_path) LOG.info('create directory: %s' % file_path) except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) sys.exit() self.msg_file_path = file_path def connectionLost(self, reason): """ TCP conection lost :param reason: """ LOG.info("BMP Client %s disconnected,Connection was closed cleanly." % self.transport.getPeer().host) self.client_info = '%s:%s' % (self.transport.getPeer().host, self.transport.getPeer().port) def closeConnection(self): """Close the connection""" if self.transport.connected: self.transport.loseConnection() @staticmethod def init_statistic(): statistic_dict = {} for msg_type in bmp_cons.MSG_TYPE_STR: statistic_dict[bmp_cons.MSG_TYPE_STR[msg_type]] = 0 return statistic_dict def dataReceived(self, data): """ Data has been received. :param data: """ self.receive_buffer += data try: while self.parse_buffer(): pass except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) self.closeConnection() def parse_buffer(self): buf = self.receive_buffer if len(buf) < bmp_cons.HEADER_LEN: # Every BMP message is at least 44 octets. Maybe the rest # hasn't arrived yet. return False # Parse the header # +-+-+-+-+-+-+-+-+ # | Version | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Message Length | # +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ # | Msg. Type | # +---------------+ version, length, msg_type = struct.unpack('!BIB', buf[:6]) if version != bmp_cons.VERSION: # close the connection raise excp.BMPVersionError(local_version=bmp_cons.VERSION, remote_version=version) if msg_type not in bmp_cons.MSG_TYPE_STR.keys(): raise excp.UnknownMessageTypeError(type=msg_type) if length > len(buf): # the hold message does not comming yet. return False msg_value = buf[6:length] self.message.msg_type = msg_type LOG.debug('Received BMP message, type=%s' % msg_type) self.message.raw_body = msg_value LOG.debug('Decoding message...') try: results = self.message.consume() if results: # write msg file self.write_msg_file(msg_type, results) else: LOG.error('decoding message failed.') except Exception as e: LOG.error(e) error_str = traceback.format_exc() LOG.debug(error_str) LOG.debug('Finished decoding.') self.message = BMPMessage() LOG.debug('-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+') self.receive_buffer = self.receive_buffer[length:] return True def write_msg_file(self, msg_type, msg): """ write msg to file """ if msg_type in [4, 5]: return peer_ip = msg[0]['addr'] if peer_ip not in self.bgp_peer_dict: self.bgp_peer_dict[peer_ip] = {} peer_msg_path = os.path.join(self.msg_file_path, peer_ip) if not os.path.exists(peer_msg_path): # this peer first come out # create a peer path and open the first message file os.makedirs(peer_msg_path) LOG.info('Create directory for peer: %s' % peer_msg_path) msg_file_name = os.path.join(peer_msg_path, '%s.msg' % time.time()) self.bgp_peer_dict[peer_ip]['msg_seq'] = 1 else: # this peer is not first come out # find the latest message file and get the last message sequence number file_list = os.listdir(peer_msg_path) file_list.sort() msg_file_name = os.path.join(peer_msg_path, file_list[-1]) self.bgp_peer_dict[peer_ip]['msg_seq'] = self.get_last_seq(msg_file_name) self.bgp_peer_dict[peer_ip]['file'] = open(msg_file_name, 'a') if msg_type == 0: # route monitoring message if msg[0]['flags']['L']: # pos-policy RIB msg_list = [time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], 130, msg[1], (1, 1)] else: # pre-policy RIB msg_list = [time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], msg[1][0], msg[1][1], (1, 1)] self.bgp_peer_dict[peer_ip]['file'].write(str(msg_list) + '\n') self.bgp_peer_dict[peer_ip]['msg_seq'] += 1 self.bgp_peer_dict[peer_ip]['file'].flush() elif msg_type == 1: # statistic message msg_list = [time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], 129, msg[1], (0, 0)] self.bgp_peer_dict[peer_ip]['file'].write(str(msg_list) + '\n') self.bgp_peer_dict[peer_ip]['msg_seq'] += 1 self.bgp_peer_dict[peer_ip]['file'].flush() elif msg_type == 2: # peer down message msg_list = [time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], 3, msg[1], (0, 0)] self.bgp_peer_dict[peer_ip]['file'].write(str(msg_list) + '\n') self.bgp_peer_dict[peer_ip]['msg_seq'] += 1 self.bgp_peer_dict[peer_ip]['file'].flush() elif msg_type == 3: # peer up message msg_list = [time.time(), self.bgp_peer_dict[peer_ip]['msg_seq'], 1, msg[1]['received_open_msg'], (0, 0)] self.bgp_peer_dict[peer_ip]['file'].write(str(msg_list) + '\n') self.bgp_peer_dict[peer_ip]['msg_seq'] += 1 self.bgp_peer_dict[peer_ip]['file'].flush() @staticmethod def get_last_seq(file_name): """ Get the last sequence number in the log file. """ lines_2find = 1 f = open(file_name) f.seek(0, 2) # go to the end of the file bytes_in_file = f.tell() lines_found, total_bytes_scanned = 0, 0 while (lines_2find + 1 > lines_found and bytes_in_file > total_bytes_scanned): byte_block = min(1024, bytes_in_file - total_bytes_scanned) f.seek(-(byte_block + total_bytes_scanned), 2) total_bytes_scanned += byte_block lines_found += f.read(1024).count('\n') f.seek(-total_bytes_scanned, 2) line_list = list(f.readlines()) last_line = line_list[-lines_2find:][0] try: last_line = eval(last_line) return last_line[1] + 1 except Exception as e: LOG.info(e) return 1