| #!/usr/bin/python3 |
| # |
| # Copyright 2015 The ChromiumOS Authors |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| |
| from __future__ import absolute_import |
| from __future__ import division |
| from __future__ import print_function |
| |
| import argparse |
| import ctypes |
| import logging |
| import logging.handlers |
| import multiprocessing |
| import signal |
| import sys |
| import time |
| |
| import common |
| from autotest_lib.client.common_lib.global_config import global_config as config |
| from autotest_lib.site_utils import log_socket_server |
| |
| |
| DEFAULT_PORT = 9080 |
| LOGGING_FORMAT = '%(asctime)s.%(msecs)03d %(levelname)-5.5s| %(message)s' |
| MEGABYTE = 1024 * 1024 |
| |
| |
| class LogServerAlreadyRunningError(Exception): |
| pass |
| |
| |
| class LogServer(object): |
| """A wrapper class to start and stop a TCP server for logging.""" |
| |
| process = None |
| |
| @staticmethod |
| def start(port, log_handler): |
| """Start Log Record Socket Receiver in a new process. |
| |
| @param port: Port to listen on. |
| @param log_handler: Logging handler. |
| |
| @raise Exception: if TCP server is already running. |
| """ |
| if LogServer.process: |
| raise LogServerAlreadyRunningError('LogServer is already running.') |
| server_started = multiprocessing.Value(ctypes.c_bool, False) |
| LogServer.process = multiprocessing.Process( |
| target=LogServer._run, |
| args=(server_started, port, log_handler)) |
| LogServer.process.start() |
| while not server_started.value: |
| time.sleep(0.1) |
| print('LogServer is started at port %d.' % port) |
| |
| |
| @staticmethod |
| def _run(server_started, port, log_handler): |
| """Run LogRecordSocketReceiver to receive log. |
| |
| @param server_started: True if socket log server is started. |
| @param port: Port used by socket log server. |
| @param log_handler: Logging handler. |
| """ |
| # Clear all existing log handlers. |
| logging.getLogger().handlers = [] |
| logging.getLogger().addHandler(log_handler) |
| |
| tcp_server = log_socket_server.LogRecordSocketReceiver( |
| port=port) |
| print('Starting LogServer...') |
| server_started.value = True |
| tcp_server.serve_until_stopped() |
| |
| |
| @staticmethod |
| def stop(): |
| """Stop LogServer.""" |
| if LogServer.process: |
| LogServer.process.terminate() |
| LogServer.process = None |
| |
| |
| def signal_handler(signal, frame): |
| """Handler for signal SIGINT. |
| |
| @param signal: SIGINT |
| @param frame: the current stack frame |
| """ |
| LogServer.stop() |
| sys.exit(0) |
| |
| |
| def get_logging_handler(): |
| """Return a logging handler. |
| |
| Configure a RPC logging handler based on global_config and return |
| the handler. |
| """ |
| max_log_size = config.get_config_value('SERVER', 'rpc_max_log_size_mb', |
| type=int) |
| number_of_old_logs = config.get_config_value('SERVER', 'rpc_num_old_logs', |
| type=int) |
| log_path = config.get_config_value('SERVER', 'rpc_log_path') |
| |
| formatter = logging.Formatter( |
| fmt=LOGGING_FORMAT, datefmt='%m/%d %H:%M:%S') |
| handler = logging.handlers.RotatingFileHandler( |
| log_path, |
| maxBytes=max_log_size*MEGABYTE, |
| backupCount=number_of_old_logs) |
| handler.setFormatter(formatter) |
| return handler |
| |
| |
| def main(): |
| parser = argparse.ArgumentParser( |
| formatter_class=argparse.ArgumentDefaultsHelpFormatter) |
| parser.add_argument('-p', type=int, dest='port', |
| help=('Listening port number'), default=DEFAULT_PORT) |
| options = parser.parse_args() |
| |
| signal.signal(signal.SIGINT, signal_handler) |
| |
| LogServer.start(options.port, get_logging_handler()) |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |