Python logging.Handler() Examples

def __init__(self, host, port):
        """
        Initializes the handler with a specific host address and port.

        The attribute 'closeOnError' is set to 1 - which means that if
        a socket error occurs, the socket is silently closed and then
        reopened on the next logging call.
        """
        logging.Handler.__init__(self)
        self.host = host
        self.port = port
        self.sock = None
        self.closeOnError = 0
        self.retryTime = None
        #
        # Exponential backoff parameters.
        #
        self.retryStart = 1.0
        self.retryMax = 30.0
        self.retryFactor = 2.0 

def __init__(self, host, port):
        """
        Initializes the handler with a specific host address and port.

        When the attribute *closeOnError* is set to True - if a socket error
        occurs, the socket is silently closed and then reopened on the next
        logging call.
        """
        logging.Handler.__init__(self)
        self.host = host
        self.port = port
        self.sock = None
        self.closeOnError = False
        self.retryTime = None
        #
        # Exponential backoff parameters.
        #
        self.retryStart = 1.0
        self.retryMax = 30.0
        self.retryFactor = 2.0 

def __init__(self, appname, dllname=None, logtype="Application"):
        logging.Handler.__init__(self)
        try:
            import win32evtlogutil, win32evtlog
            self.appname = appname
            self._welu = win32evtlogutil
            if not dllname:
                dllname = os.path.split(self._welu.__file__)
                dllname = os.path.split(dllname[0])
                dllname = os.path.join(dllname[0], r'win32service.pyd')
            self.dllname = dllname
            self.logtype = logtype
            self._welu.AddSourceToRegistry(appname, dllname, logtype)
            self.deftype = win32evtlog.EVENTLOG_ERROR_TYPE
            self.typemap = {
                logging.DEBUG   : win32evtlog.EVENTLOG_INFORMATION_TYPE,
                logging.INFO    : win32evtlog.EVENTLOG_INFORMATION_TYPE,
                logging.WARNING : win32evtlog.EVENTLOG_WARNING_TYPE,
                logging.ERROR   : win32evtlog.EVENTLOG_ERROR_TYPE,
                logging.CRITICAL: win32evtlog.EVENTLOG_ERROR_TYPE,
         }
        except ImportError:
            print("The Python Win32 extensions for NT (service, event "\
                        "logging) appear not to be available.")
            self._welu = None 

def __init__(self, appname, dllname=None, logtype="Application"):
        logging.Handler.__init__(self)
        try:
            import win32evtlogutil, win32evtlog
            self.appname = appname
            self._welu = win32evtlogutil
            if not dllname:
                dllname = os.path.split(self._welu.__file__)
                dllname = os.path.split(dllname[0])
                dllname = os.path.join(dllname[0], r'win32service.pyd')
            self.dllname = dllname
            self.logtype = logtype
            self._welu.AddSourceToRegistry(appname, dllname, logtype)
            self.deftype = win32evtlog.EVENTLOG_ERROR_TYPE
            self.typemap = {
                logging.DEBUG   : win32evtlog.EVENTLOG_INFORMATION_TYPE,
                logging.INFO    : win32evtlog.EVENTLOG_INFORMATION_TYPE,
                logging.WARNING : win32evtlog.EVENTLOG_WARNING_TYPE,
                logging.ERROR   : win32evtlog.EVENTLOG_ERROR_TYPE,
                logging.CRITICAL: win32evtlog.EVENTLOG_ERROR_TYPE,
         }
        except ImportError:
            print("The Python Win32 extensions for NT (service, event "\
                        "logging) appear not to be available.")
            self._welu = None 

def set_formatter(self, handler_id, formatter):
        """Set the formatter of the specified handler.

        Parameters
        ----------
        handler_id : unicode
            Id of the handler whose formatter shoudl be set.

        formatter : Formatter
            Formatter for the handler.

        """
        handlers = self._handlers
        handler_id = str(handler_id)
        if handler_id in handlers:
            handler, _ = handlers[handler_id]
            handler.setFormatter(formatter)

        else:
            logger = logging.getLogger(__name__)
            logger.warning('Handler {} does not exist')

    # ---- Private API --------------------------------------------------------

    # Mapping between handler ids and handler, logger name pairs. 

def __init__(self, appname, dllname=None, logtype="Application"):
        logging.Handler.__init__(self)
        try:
            import win32evtlogutil, win32evtlog
            self.appname = appname
            self._welu = win32evtlogutil
            if not dllname:
                dllname = os.path.split(self._welu.__file__)
                dllname = os.path.split(dllname[0])
                dllname = os.path.join(dllname[0], r'win32service.pyd')
            self.dllname = dllname
            self.logtype = logtype
            self._welu.AddSourceToRegistry(appname, dllname, logtype)
            self.deftype = win32evtlog.EVENTLOG_ERROR_TYPE
            self.typemap = {
                logging.DEBUG   : win32evtlog.EVENTLOG_INFORMATION_TYPE,
                logging.INFO    : win32evtlog.EVENTLOG_INFORMATION_TYPE,
                logging.WARNING : win32evtlog.EVENTLOG_WARNING_TYPE,
                logging.ERROR   : win32evtlog.EVENTLOG_ERROR_TYPE,
                logging.CRITICAL: win32evtlog.EVENTLOG_ERROR_TYPE,
         }
        except ImportError:
            print("The Python Win32 extensions for NT (service, event "\
                        "logging) appear not to be available.")
            self._welu = None 

def __init__(self, address=('localhost', SYSLOG_UDP_PORT),
                 facility=LOG_USER, socktype=socket.SOCK_DGRAM):
        """
        Initialize a handler.

        If address is specified as a string, a UNIX socket is used. To log to a
        local syslogd, "SysLogHandler(address="/dev/log")" can be used.
        If facility is not specified, LOG_USER is used.
        """
        logging.Handler.__init__(self)

        self.address = address
        self.facility = facility
        self.socktype = socktype

        if isinstance(address, basestring):
            self.unixsocket = 1
            self._connect_unixsocket(address)
        else:
            self.unixsocket = 0
            self.socket = socket.socket(socket.AF_INET, socktype)
            if socktype == socket.SOCK_STREAM:
                self.socket.connect(address)
        self.formatter = None 

def __init__(self, host, port):
        """
        Initializes the handler with a specific host address and port.

        The attribute 'closeOnError' is set to 1 - which means that if
        a socket error occurs, the socket is silently closed and then
        reopened on the next logging call.
        """
        logging.Handler.__init__(self)
        self.host = host
        self.port = port
        self.sock = None
        self.closeOnError = 0
        self.retryTime = None
        #
        # Exponential backoff parameters.
        #
        self.retryStart = 1.0
        self.retryMax = 30.0
        self.retryFactor = 2.0 

def __init__(self, appname, dllname=None, logtype="Application"):
        logging.Handler.__init__(self)
        try:
            import win32evtlogutil, win32evtlog
            self.appname = appname
            self._welu = win32evtlogutil
            if not dllname:
                dllname = os.path.split(self._welu.__file__)
                dllname = os.path.split(dllname[0])
                dllname = os.path.join(dllname[0], r'win32service.pyd')
            self.dllname = dllname
            self.logtype = logtype
            self._welu.AddSourceToRegistry(appname, dllname, logtype)
            self.deftype = win32evtlog.EVENTLOG_ERROR_TYPE
            self.typemap = {
                logging.DEBUG   : win32evtlog.EVENTLOG_INFORMATION_TYPE,
                logging.INFO    : win32evtlog.EVENTLOG_INFORMATION_TYPE,
                logging.WARNING : win32evtlog.EVENTLOG_WARNING_TYPE,
                logging.ERROR   : win32evtlog.EVENTLOG_ERROR_TYPE,
                logging.CRITICAL: win32evtlog.EVENTLOG_ERROR_TYPE,
         }
        except ImportError:
            print("The Python Win32 extensions for NT (service, event "\
                        "logging) appear not to be available.")
            self._welu = None 

def __init__(self, host, port):
        """
        Initializes the handler with a specific host address and port.

        The attribute 'closeOnError' is set to 1 - which means that if
        a socket error occurs, the socket is silently closed and then
        reopened on the next logging call.
        """
        logging.Handler.__init__(self)
        self.host = host
        self.port = port
        self.sock = None
        self.closeOnError = 0
        self.retryTime = None
        #
        # Exponential backoff parameters.
        #
        self.retryStart = 1.0
        self.retryMax = 30.0
        self.retryFactor = 2.0 

def test_out_of_order(self):
        self.apply_config(self.out_of_order)
        handler = logging.getLogger('mymodule').handlers[0]
        self.assertIsInstance(handler.target, logging.Handler) 

def __init__(self, host, url, method="GET"):
        """
        Initialize the instance with the host, the request URL, and the method
        ("GET" or "POST")
        """
        logging.Handler.__init__(self)
        method = method.upper()
        if method not in ["GET", "POST"]:
            raise ValueError("method must be GET or POST")
        self.host = host
        self.url = url
        self.method = method 

def add_handler(h):
    if not isinstance(h, logging.Handler):
        raise TypeError(h)

    _handlers.append(h) 

def close (self):
        """
        Closes the socket.
        """
        self.acquire()
        try:
            if self.unixsocket:
                self.socket.close()
        finally:
            self.release()
        logging.Handler.close(self) 

def test_set_log_level_format(self):
        mock_log = Mock(spec_set=logging.Logger)
        mock_handler = Mock(spec_set=logging.Handler)
        type(mock_log).handlers = [mock_handler]
        with patch('%s.logging.Formatter' % pbm) as mock_formatter:
            set_log_level_format(mock_log, 5, 'foo')
        assert mock_formatter.mock_calls == [
            call(fmt='foo')
        ]
        assert mock_handler.mock_calls == [
            call.setFormatter(mock_formatter.return_value)
        ]
        assert mock_log.mock_calls == [
            call.setLevel(5)
        ] 

def handleError(self, record):
        """
        Handle an error during logging.

        An error has occurred during logging. Most likely cause -
        connection lost. Close the socket so that we can retry on the
        next event.
        """
        if self.closeOnError and self.sock:
            self.sock.close()
            self.sock = None        #try to reconnect next time
        else:
            logging.Handler.handleError(self, record) 

def close(self):
        """
        Closes the socket.
        """
        self.acquire()
        try:
            if self.sock:
                self.sock.close()
                self.sock = None
        finally:
            self.release()
        logging.Handler.close(self) 

def __init__(self, address=('localhost', SYSLOG_UDP_PORT),
                 facility=LOG_USER, socktype=None):
        """
        Initialize a handler.

        If address is specified as a string, a UNIX socket is used. To log to a
        local syslogd, "SysLogHandler(address="/dev/log")" can be used.
        If facility is not specified, LOG_USER is used. If socktype is
        specified as socket.SOCK_DGRAM or socket.SOCK_STREAM, that specific
        socket type will be used. For Unix sockets, you can also specify a
        socktype of None, in which case socket.SOCK_DGRAM will be used, falling
        back to socket.SOCK_STREAM.
        """
        logging.Handler.__init__(self)

        self.address = address
        self.facility = facility
        self.socktype = socktype

        if isinstance(address, basestring):
            self.unixsocket = 1
            self._connect_unixsocket(address)
        else:
            self.unixsocket = 0
            if socktype is None:
                socktype = socket.SOCK_DGRAM
            self.socket = socket.socket(socket.AF_INET, socktype)
            if socktype == socket.SOCK_STREAM:
                self.socket.connect(address)
            self.socktype = socktype
        self.formatter = None 

def __init__(self, host, url, method="GET"):
        """
        Initialize the instance with the host, the request URL, and the method
        ("GET" or "POST")
        """
        logging.Handler.__init__(self)
        method = method.upper()
        if method not in ["GET", "POST"]:
            raise ValueError("method must be GET or POST")
        self.host = host
        self.url = url
        self.method = method 

def __init__(self, capacity):
        """
        Initialize the handler with the buffer size.
        """
        logging.Handler.__init__(self)
        self.capacity = capacity
        self.buffer = [] 

def __init__(self):
            self.num_emits = 0
            logging.Handler.__init__(self) 

def __init__(self):
        self.emitted = []
        logging.Handler.__init__(self) 

def close(self):
        """
        Close the handler.

        This version just flushes and chains to the parent class' close().
        """
        try:
            self.flush()
        finally:
            logging.Handler.close(self) 

def __init__(self, capacity):
        """
        Initialize the handler with the buffer size.
        """
        logging.Handler.__init__(self)
        self.capacity = capacity
        self.buffer = [] 

def _set_logging(
        logger_name="colin",
        level=logging.INFO,
        handler_class=logging.StreamHandler,
        handler_kwargs=None,
        format='%(asctime)s.%(msecs).03d %(filename)-17s %(levelname)-6s %(message)s',
        date_format='%H:%M:%S'):
    """
    Set personal logger for this library.

    :param logger_name: str, name of the logger
    :param level: int, see logging.{DEBUG,INFO,ERROR,...}: level of logger and handler
    :param handler_class: logging.Handler instance, default is StreamHandler (/dev/stderr)
    :param handler_kwargs: dict, keyword arguments to handler's constructor
    :param format: str, formatting style
    :param date_format: str, date style in the logs
    """
    if level != logging.NOTSET:
        logger = logging.getLogger(logger_name)
        logger.setLevel(level)

        # do not readd handlers if they are already present
        if not [x for x in logger.handlers if isinstance(x, handler_class)]:
            handler_kwargs = handler_kwargs or {}
            handler = handler_class(**handler_kwargs)
            handler.setLevel(level)

            formatter = logging.Formatter(format, date_format)
            handler.setFormatter(formatter)
            logger.addHandler(handler) 

def close(self):
        """
        Clean up this handler.

        You can remove the application name from the registry as a
        source of event log entries. However, if you do this, you will
        not be able to see the events as you intended in the Event Log
        Viewer - it needs to be able to access the registry to get the
        DLL name.
        """
        #self._welu.RemoveSourceFromRegistry(self.appname, self.logtype)
        logging.Handler.close(self) 

def close(self):
        """
        Closes the socket.
        """
        self.acquire()
        try:
            if self.unixsocket:
                self.socket.close()
        finally:
            self.release()
        logging.Handler.close(self) 

def close(self):
        """
        Closes the socket.
        """
        self.acquire()
        try:
            sock = self.sock
            if sock:
                self.sock = None
                sock.close()
        finally:
            self.release()
        logging.Handler.close(self) 

def handleError(self, record):
        """
        Handle an error during logging.

        An error has occurred during logging. Most likely cause -
        connection lost. Close the socket so that we can retry on the
        next event.
        """
        if self.closeOnError and self.sock:
            self.sock.close()
            self.sock = None        #try to reconnect next time
        else:
            logging.Handler.handleError(self, record) 

def __init__(self, *args, **kwargs):
        """Create the instance, and add a records attribute."""
        logging.Handler.__init__(self, *args, **kwargs)
        self.records = []