Python twisted.python.log.startLoggingWithObserver() Examples

def start(self, application):
        """
        Initialize the logging system.

        If an L{ILogObserver} component has been set on C{application}, then
        it will be used as the log observer.  Otherwise a log observer will be
        created based on the command-line options.

        @param application: The application on which to check for an
            L{ILogObserver}.
        """
        observer = application.getComponent(ILogObserver, None)

        if observer is None:
            observer = self._getLogObserver()
        self._observer = observer
        log.startLoggingWithObserver(self._observer)
        self._initialLog() 

def _startLoggingWithObserver(observer, setStdout=1):
    """Replacement for `t.p.log.startLoggingWithObserver`.

    When `twistd` starts in 16.0 it initialises the legacy logging system.
    Intercept this to DTRT with either a modern or legacy observer.

    In Xenial (with Twisted 16.0) `observer` is probably a legacy observer,
    like twisted.python.log.FileLogObserver, but we should check if it's
    modern. In either case we should call through to the `globalLogBeginner`
    ourselves. In Yakkety (with Twisted 16.4) this function will not be
    called; `t.application.app.AppLogger` does the right thing already.
    """
    if not twistedModern.ILogObserver.providedBy(observer):
        observer = twistedModern.LegacyLogObserverWrapper(observer)
    twistedModern.globalLogBeginner.beginLoggingTo(
        [observer], discardBuffer=False, redirectStandardIO=bool(setStdout)
    ) 

def carml(ctx, timestamps, no_color, info, quiet, debug, debug_protocol, password, connect, color, json):
    if (color == 'always' and no_color) or \
       (color == 'no' and no_color is True):
        raise click.UsageError(
            "--no-color={} but --color={}".format(no_color, color)
        )

    cfg = Config()
    ctx.obj = cfg

    cfg.timestamps = timestamps
    cfg.no_color = no_color
    cfg.info = info
    cfg.quiet = quiet
    cfg.debug = debug
    cfg.password = password
    cfg.connect = connect
    cfg.color = color
    cfg.debug_protocol = debug_protocol
    cfg.json = True if json else False

    # start logging
    _log_observer = LogObserver()
    log.startLoggingWithObserver(_log_observer, setStdout=False) 

def startLogging(self, filePath=None, stealStdio=False, printToConsole=True):
        '''
        Begin logging. The output class is ready to go out of the box, but in order
        to prevent mere imports from stealing stdio or console logging to vanish
        these must be manually turned on.

        :param filePath: if provided, begin logging to the given directory. If
            not provided, do not write out logs.
        :type filePath: str
        :param stealStdio: choose to intercept stdio (including vanilla print
            statements) or allow it to passthrough
        :type stealStdio: bool.
        :param printToConsole: output the results of all logging to the console. This
            is primarily a performance consideration when running in production
        :type printToConsole: bool.

        '''

        # Initialize printer thread
        self.__dict__['logpath'] = None

        if filePath is not None:
            self.__dict__['queue'] = queue.Queue()
            self.__dict__['printer'] = PrintLogThread(filePath, self.queue, LOG_NAME)
            self.__dict__['logpath'] = filePath
            self.printer.start()

        # by default, stdio gets captures. This can be toggled off
        self.stealStdio(stealStdio)
        self.logToConsole(printToConsole)

        # Override twisted logging (allows us to cleanly catch all exceptions)
        # This must come after the setattr calls so we get the wrapped object
        log.startLoggingWithObserver(self.twisted, setStdout=False)
        log.startLoggingWithObserver(self.twistedErr, setStdout=False) 

def _setUpLogFile(self):
        self._tearDownLogFile()
        if self.logfile == '-':
            logFile = sys.stdout
        else:
            logFile = open(self.logfile, 'a')
        self._logFileObject = logFile
        self._logFileObserver = log.FileLogObserver(logFile)
        log.startLoggingWithObserver(self._logFileObserver.emit, 0) 

def startLogging(prefix='Twisted', options=DEFAULT_OPTIONS,
                 facility=DEFAULT_FACILITY, setStdout=1):
    """
    Send all Twisted logging output to syslog from now on.

    The prefix, options and facility arguments are passed to
    C{syslog.openlog()}, see the Python syslog documentation for details. For
    other parameters, see L{twisted.python.log.startLoggingWithObserver}.
    """
    obs = SyslogObserver(prefix, options, facility)
    log.startLoggingWithObserver(obs.emit, setStdout=setStdout) 

def _setUpLogFile(self):
        self._tearDownLogFile()
        if self.logfile == '-':
            logFile = sys.stdout
        else:
            logFile = open(self.logfile, 'a')
        self._logFileObject = logFile
        self._logFileObserver = log.FileLogObserver(logFile)
        log.startLoggingWithObserver(self._logFileObserver.emit, 0) 

def startLogging(prefix='Twisted', options=DEFAULT_OPTIONS,
                 facility=DEFAULT_FACILITY, setStdout=1):
    """
    Send all Twisted logging output to syslog from now on.

    The prefix, options and facility arguments are passed to
    C{syslog.openlog()}, see the Python syslog documentation for details. For
    other parameters, see L{twisted.python.log.startLoggingWithObserver}.
    """
    obs = SyslogObserver(prefix, options, facility)
    log.startLoggingWithObserver(obs.emit, setStdout=setStdout) 

def _setUpLogFile(self):
        self._tearDownLogFile()
        if self.logfile == '-':
            logFile = sys.stdout
        else:
            logFile = file(self.logfile, 'a')
        self._logFileObject = logFile
        self._logFileObserver = log.FileLogObserver(logFile)
        log.startLoggingWithObserver(self._logFileObserver.emit, 0) 

def startLogging(prefix='Twisted', options=DEFAULT_OPTIONS,
                 facility=DEFAULT_FACILITY, setStdout=1):
    """
    Send all Twisted logging output to syslog from now on.

    The prefix, options and facility arguments are passed to
    C{syslog.openlog()}, see the Python syslog documentation for details. For
    other parameters, see L{twisted.python.log.startLoggingWithObserver}.
    """
    obs = SyslogObserver(prefix, options, facility)
    log.startLoggingWithObserver(obs.emit, setStdout=setStdout) 

def start(error_log_level = logging.ERROR,
          info_log_level = logging.INFO ):
    """Writes twisted output to a logger using 'twisted' as the
       logger name (i.e., 'twisted' is passed as name arg to logging.getLogger(name)).
       """
    o = LogLogObserver(error_log_level, info_log_level)

    # We do not use twisted setStdout logging because it is not clear to me
    # how to differentiate twisted-generated log entries and
    # redirected output.  It is possible that all stdout and stderr
    # output has system '-', but from looking at twisted source code
    # there does not appear to be any guarantee that this is the case.
    # A simpler way of handling this is to simply separate
    # stdio and stderr redirection from twisted logging.   --Dave
    log.startLoggingWithObserver(o.emit , setStdout = 0) #setStdout=int(capture_output)) 

def start(error_log_level = logging.ERROR,
          info_log_level = logging.INFO ):
    """Writes twisted output to a logger using 'twisted' as the
       logger name (i.e., 'twisted' is passed as name arg to logging.getLogger(name)).
       """
    o = LogLogObserver(error_log_level, info_log_level)

    # We do not use twisted setStdout logging because it is not clear to me
    # how to differentiate twisted-generated log entries and
    # redirected output.  It is possible that all stdout and stderr
    # output has system '-', but from looking at twisted source code
    # there does not appear to be any guarantee that this is the case.
    # A simpler way of handling this is to simply separate
    # stdio and stderr redirection from twisted logging.   --Dave
    log.startLoggingWithObserver(o.emit , setStdout = 0) #setStdout=int(capture_output)) 

def _setUpLogFile(self):
        self._tearDownLogFile()
        if self.logfile == '-':
            logFile = sys.stdout
        else:
            logFile = file(self.logfile, 'a')
        self._logFileObject = logFile
        self._logFileObserver = log.FileLogObserver(logFile)
        log.startLoggingWithObserver(self._logFileObserver.emit, 0) 

def __init__(self, timestamp=False, flush=True):
        self.timestamp = timestamp
        self.flush = flush
        # we keep our own copies of these, because Twisted's
        # startLoggingWithObserver overwrites them with its own
        # monitoring machinery
        self.stdout = sys.stdout
        self.stderr = sys.stderr