How to use manage_stdout method in autotest

Best Python code snippet using autotest_python

logging_manager.py

Source:logging_manager.py Github

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...29 manager = FdRedirectionLoggingManager()30 else:31 manager = LoggingManager()32 if manage_stdout_and_stderr:33 manager.manage_stdout()34 manager.manage_stderr()35 return manager36# implementation follows37logger = logging.getLogger()38def _current_handlers():39 return set(logger.handlers)40#保存函数的code对象41_caller_code_to_skip_in_logging_stack = set()42def do_not_report_as_logging_caller(func):43 #装饰器，这个函数不进行log44 """Decorator to annotate functions we will tell logging not to log."""45 # These are not the droids you are looking for.46 # You may go about your business.47 _caller_code_to_skip_in_logging_stack.add(func.func_code)48 return func49# Copied from Python 2.4 logging/​__init__.py Logger.findCaller and enhanced.50# The logging code remains the same and compatible with this monkey patching51# through at least Python version 2.6.2.52#貌似没什么意义，logging中的findcall，查找调用栈，获取当前的行号和函数名等53def _logging_manager_aware_logger__find_caller(unused):54 """55 Find the stack frame of the caller so that we can note the source56 file name, line number and function name.57 """58 f = sys._getframe(2).f_back59 rv = "(unknown file)", 0, "(unknown function)"60 while hasattr(f, "f_code"):61 co = f.f_code62 filename = os.path.normcase(co.co_filename)63 if filename == logging._srcfile:64 f = f.f_back65 continue66 # START additional code.67 #!!!如果我们找到的code对象保存在不log的stack里面，那么这个log就不report68 if co in _caller_code_to_skip_in_logging_stack:69 f = f.f_back70 continue71 # END additional code.72 rv = (filename, f.f_lineno, co.co_name)73 break74 return rv75if sys.version_info[:2] > (2, 7):76 warnings.warn('This module has not been reviewed for Python %s' %77 sys.version)78# Monkey patch our way around logging's design...79# Monkey patch代表着在runtime的时候动态的替换掉原来模块中的方法、类、80#原来的find_caller函数81_original_logger__find_caller = logging.Logger.findCaller82#替换成autotest自己的find_caller，增加了可以主动不log code的功能83logging.Logger.findCaller = _logging_manager_aware_logger__find_caller84class LoggingFile(object):85 """86 File-like object that will receive messages pass them to the logging87 infrastructure in an appropriate way.88 """89 #假装自己是一个文件，但实际是一个log，目的是将一个字符串，分行的输出到log中90 #如果是一个包含换行的string，会分成多个log下发出去91 def __init__(self, prefix='', level=logging.DEBUG,92 logger=logging.getLogger()):93 """94 :param prefix - The prefix for each line logged by this object.95 """96 self._prefix = prefix97 self._level = level98 self._buffer = []99 self._logger = logger100 @do_not_report_as_logging_caller101 def write(self, data):102 """"103 Writes data only if it constitutes a whole line. If it's not the case,104 store it in a buffer and wait until we have a complete line.105 :param data - Raw data (a string) that will be processed.106 """107 #传入data，一个字符串，data进行分行108 #第一行和前一个buffer结合109 #最后一行继续放在buffer里，等待后续的log110 # splitlines() discards a trailing blank line, so use split() instead111 data_lines = data.split('\n')112 if len(data_lines) > 1:113 self._buffer.append(data_lines[0])114 self._flush_buffer()115 for line in data_lines[1:-1]:116 self._log_line(line)117 if data_lines[-1]:118 self._buffer.append(data_lines[-1])119 @do_not_report_as_logging_caller120 def writelines(self, lines):121 """"122 Writes itertable of lines123 :param lines: An iterable of strings that will be processed.124 """125 for data in lines:126 self.write(data)127 @do_not_report_as_logging_caller128 def _log_line(self, line):129 """130 Passes lines of output to the logging module.131 """132 self._logger.log(self._level, self._prefix + line)133 @do_not_report_as_logging_caller134 def _flush_buffer(self):135 if self._buffer:136 self._log_line(''.join(self._buffer))137 self._buffer = []138 @do_not_report_as_logging_caller139 def flush(self):140 self._flush_buffer()141 def isatty(self):142 return False143class SortingLoggingFile(LoggingFile):144 """145 File-like object that will receive messages and pass them to the logging146 infrastructure. It decides where to pass each line by applying a regex147 to it and seeing which level it matched.148 """149 def __init__(self, prefix='', level_list=[('ERROR', logging.ERROR),150 ('WARN', logging.WARN), ('INFO', logging.INFO),151 ('DEBUG', logging.DEBUG)], logger=logging.getLogger()):152 super(SortingLoggingFile, self).__init__(prefix=prefix, logger=logger)153 #生成一个新list[(re对象,40),(re对象，30)]154 self._level_list = [(re.compile(x), y) for x, y in level_list]155 @do_not_report_as_logging_caller156 def _log_line(self, line):157 #如果line中存在以上4个级别的re字段，则logging158 for pattern, level in self._level_list:159 if pattern.search(line):160 self._logger.log(level, self._prefix + line)161 break162 #否则添加一个UNMATCHED_LOG_LEVEL163 else:164 self._logger.log(logging.ERROR, 'UNMATCHED_LOG_LEVEL: ' +165 self._prefix + line)166class _StreamManager(object):167 """168 Redirects all output for some output stream (normally stdout or stderr) to169 the logging module by replacing the file objects with a new LoggingFile170 that calls logging.log().171 """172 #将stdout和stderr中的所有内容重定向到log中去173 def __init__(self, stream, level, stream_setter):174 """175 :param stream: stream object to manage176 :param level: level at which data written to the stream will be logged177 :param stream_setter: function accepting a stream object that will178 replace the given stream in its original location.179 """180 self._stream = stream #需要manage的流181 self._level = level182 self._stream_setter = stream_setter #方法，接受一个流对象183 self._logging_stream = None184 def _replace_with_logger(self):185 #将logging流替换成LoggingFile对象，调用_stream_setter函数186 self._logging_stream = LoggingFile(level=self._level)187 self._stream_setter(self._logging_stream)188 def _restore_stream(self):189 self._stream_setter(self._stream)190 def flush(self):191 self._logging_stream.flush()192 def start_logging(self):193 """Start directing the stream to the logging module."""194 self._replace_with_logger()195 def stop_logging(self):196 """Restore the stream to its original settings."""197 self._restore_stream()198 def on_push_context(self, context):199 """200 Called when the logging manager is about to push a new context onto the201 stack and has changed logging settings. The StreamHandler can modify202 the context to be saved before returning.203 """204 pass205 def on_restore_context(self, context):206 """207 Called when the logging manager is restoring a previous context.208 """209 pass210class LoggingManager(object):211 """212 Manages a stack of logging configurations, allowing clients to conveniently213 add and remove logging destinations. Also keeps a list of StreamManagers214 to easily direct streams into the logging module.215 """216 #管理一堆logging配置，允许clients方便的增删logging位置，另外保持一个StreamManger列表217 #用于streams redirect218 STREAM_MANAGER_CLASS = _StreamManager219 logging_config_object = None220 def __init__(self):221 """222 This class should not ordinarily be constructed directly (other than in223 tests). Use the module-global factory method get_logging_manager()224 instead.225 """226 #使用全局函数get_logging_manager，不要多次init这个类227 if self.logging_config_object is None:228 raise RuntimeError('You must call configure_logging() before this')229 # _context_stack holds a stack of context dicts. Each context dict230 # contains:231 # * old_handlers: list of registered logging Handlers232 # contexts may also be extended by _StreamHandlers233 self._context_stack = []234 self._streams = []235 self._started = False236 def manage_stream(self, stream, level, stream_setter):237 """238 Tells this manager to manage the given stream. All data written to the239 stream will be directed to the logging module instead. Must be called240 before start_logging().241 :param stream: stream to manage242 :param level: level to log data written to this stream243 :param stream_setter: function to set the stream to a new object244 """245 if self._started:246 raise RuntimeError('You must call this before start_logging()')247 self._streams.append(self.STREAM_MANAGER_CLASS(stream, level,248 stream_setter))249 def _sys_stream_setter(self, stream_name):250 #!重要，将sys.stdout和stderr设置为一个文件对象，251 assert stream_name in ('stdout', 'stderr'), stream_name252 def set_stream(file_object):253 setattr(sys, stream_name, file_object)254 return set_stream255 def manage_stdout(self):256 self.manage_stream(sys.stdout, logging.INFO,257 self._sys_stream_setter('stdout'))258 def manage_stderr(self):259 self.manage_stream(sys.stderr, self.logging_config_object.stderr_level,260 self._sys_stream_setter('stderr'))261 def start_logging(self):262 """263 Begin capturing output to the logging module.264 """265 for stream_manager in self._streams:266 stream_manager.start_logging()267 self._started = True268 def stop_logging(self):269 """...

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ReaderManager.py

Source:ReaderManager.py Github

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1#!/​usr/​bin/​env python2# -*- encoding: utf-8 -*-3import re4import sys5import time6import json7import socket8import datetime9import ProcReader.util as util_utils10from collections import OrderedDict11from DaemonClass import Daemon12from ProcReader.settings import (MANAGE_PIDFILE, MANAGE_STDIN,13 MANAGE_STDOUT, MANAGE_STDERR,14 MANAGE_WR_URL)15class ReaderManager(Daemon):16 _intvl = None17 _wr_url = None18 _readersters = OrderedDict()19 def __init__(self,20 pidfile=MANAGE_PIDFILE,21 stdin=MANAGE_STDIN,22 stdout=MANAGE_STDOUT,23 stderr=MANAGE_STDERR,24 intvl=10,25 wr_url=MANAGE_WR_URL):26 super(ReaderManager, self).__init__(pidfile=pidfile,27 stdin=stdin, stdout=stdout, stderr=stderr)28 self._wr_url = wr_url29 tmp_str = util_utils.rd_data('%s%s' % (self._wr_url, 'getintvl'))30 if tmp_str:31 self._intvl = int(tmp_str)32 else:33 self._intvl = intvl34 tmp_list = None35 tmp_str = util_utils.rd_data('%s%s' % (self._wr_url, 'getreadersters'))36 if tmp_str:37 tmp_list = eval(tmp_str)38 if type(tmp_list) == type(''):39 tmp_list = eval(tmp_list)40 for reader in tmp_list:41 p_name, cls = util_utils.load_class(reader)42 if p_name and cls:43 self._readersters[p_name] = cls()44 else:45 self._readersters = OrderedDict()46 def set_intvl(self, intvl):47 if intvl > 1:48 self._intvl = intvl49 util_utils.wr_data('%s%s' % (self._wr_url, 'setintvl'), intvl)50 self.restart()51 def set_readersters(self, readersters):52 reader_list = eval(readersters)53 self._readersters = OrderedDict()54 for reader in reader_list:55 p_name, cls = util_utils.load_class(reader)56 if p_name and cls:57 self._readersters[p_name] = cls()58 util_utils.wr_data('%s%s' %59 (self._wr_url, 'setreadersters'), readersters)60 self.restart()61 def _reader(self):62 reader_data = OrderedDict()63 if self._readersters:64 for readerster in self._readersters:65 reader_data[readerster] = {}66 reader_data[readerster]['timestamp'] = time.asctime(67 time.localtime())68 reader_data[readerster]['data'] = self._readersters[readerster].get_data()69 return reader_data70 def run(self):71 cnt = 072 while True:73 wr_obj = {}74 try:75 wr_obj['data'] = self._reader()76 wr_obj['timestamp'] = time.asctime(time.localtime())77 wr_obj['hostname'] = socket.gethostname()78 wr_obj['ip_address'] = socket.gethostbyname(wr_obj['hostname'])79 except socket.gaierror as e:80 wr_obj['ip_address'] = ''81 finally:82 util_utils.wr_data('%s%s' % (self._wr_url, 'setdata'), wr_obj)83 time.sleep(self._intvl)84 cnt += 185if __name__ == '__main__':86 daemon = ReaderManager()87 if len(sys.argv) == 2:88 if sys.argv[1] == 'start':89 daemon.start()90 elif sys.argv[1] == 'stop':91 daemon.stop()92 elif sys.argv[1] == 'restart':93 daemon.restart()94 else:95 print('Unknown command')96 sys.exit(2)97 elif len(sys.argv) == 3:98 if sys.argv[1] == 'setintvl':99 if re.match(r'^-?\d+$', sys.argv[2]) or re.match(r'^-?(\.\d+|\d+(\.\d+)?)', sys.argv[2]):100 daemon.set_intvl(int(sys.argv[2]))101 print('Set interval: %s' % sys.argv[2])102 elif sys.argv[1] == 'setreader':103 reader_list = None104 try:105 reader_list = eval(sys.argv[2])106 except:107 print('%s is not a list.' % sys.argv[2])108 if reader_list:109 daemon.set_readersters(sys.argv[2])110 else:111 print('USAGE: %s start/​stop/​restart' % sys.argv[0])...

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settings.py

Source:settings.py Github

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1#!/​usr/​bin/​env python2# -*- encoding: utf-8 -*-3BASE_RATE = 10244# cpu.py5PROC_CPU_INFO = '/​proc/​cpuinfo'6PROC_CPU_STAT = '/​proc/​stat'7# disk.py8PROC_DISK_STAT = '/​proc/​diskstats'9PROC_FILE_SYST = '/​proc/​filesystems'10DISK_UNIT_LIST = ('B', 'KB', 'MB', 'GB', 'TB', 'PB')11DISK_RATE_LIST = (12 pow(BASE_RATE, 0), pow(BASE_RATE, 1),13 pow(BASE_RATE, 2), pow(BASE_RATE, 3),14 pow(BASE_RATE, 4), pow(BASE_RATE, 5),15)16DISK_ETC_MTAB = '/​etc/​mtab'17# load.py18PROC_LOAD_STAT = '/​proc/​loadavg'19# mem.py20PROC_MEM_INFO = '/​proc/​meminfo'21MEM_UNIT_LIST = ('KB', 'MB', 'GB')22MEM_RATE_LIST = (23 pow(BASE_RATE, 0), pow(BASE_RATE, 1),24 pow(BASE_RATE, 2),25)26# net.py27PROC_NET_DEV = '/​proc/​net/​dev'28# uptime.py29PROC_UPTIME_INFO = '/​proc/​uptime'30# daemon.py31DEV_STD_IN = '/​dev/​stdin'32DEV_STD_OUT = '/​dev/​stdout'33DEV_STD_ERR = '/​dev/​stderr'34# httpserver.py35READER_PATH = '/​usr/​local/​procagent'36READERS_LIST = [37 'ProcReader.cpu.CPUUsageReader',38 'ProcReader.mem.MemInfoReader',39 'ProcReader.load.LoadStatReader',40 'ProcReader.disk.DiskUsageReader',41 'ProcReader.net.NetStatReader',42 'ProcReader.uptime.UptimeReader',43]44# readermanager.py45MANAGE_PIDFILE = '/​tmp/​readercls.pid'46MANAGE_STDIN = '/​dev/​null'47MANAGE_STDOUT = '/​dev/​null'48MANAGE_STDERR = '/​dev/​null'...

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