diff options
| -rw-r--r-- | src/leap/util/leap_log_handler.py | 74 |
1 files changed, 57 insertions, 17 deletions
diff --git a/src/leap/util/leap_log_handler.py b/src/leap/util/leap_log_handler.py index 0e598032..3264e05c 100644 --- a/src/leap/util/leap_log_handler.py +++ b/src/leap/util/leap_log_handler.py @@ -14,32 +14,30 @@ # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. - """ Custom handler for the logger window. """ import logging +from functools import partial from PySide import QtCore - -class LeapLogHandler(logging.Handler, QtCore.QObject): +class LogHandler(logging.Handler): """ - Custom logging handler. It emits Qt signals so it can be plugged to a gui. - Also stores an history of logs that can be fetched after connect to a gui. + This is the custom handler that implements our desired formatting + and also keeps a history of all the logged events. """ - # All dicts returned are of the form - # {'record': LogRecord, 'message': str} - new_log = QtCore.Signal(dict) MESSAGE_KEY = 'message' RECORD_KEY = 'record' - def __init__(self): - logging.Handler.__init__(self) - QtCore.QObject.__init__(self) + # TODO This is going to eat lots of memory after some time. + # Should be pruned at some moment. + _log_history = [] - self._log_history = [] + def __init__(self, qtsignal): + logging.Handler.__init__(self) + self._qtsignal = qtsignal def _set_format(self, logging_level): """ @@ -66,6 +64,7 @@ class LeapLogHandler(logging.Handler, QtCore.QObject): format_attrs = [time, name, level, message] log_format = ' - '.join(format_attrs) formatter = logging.Formatter(log_format) + self.setFormatter(formatter) def emit(self, logRecord): @@ -74,8 +73,6 @@ class LeapLogHandler(logging.Handler, QtCore.QObject): logging module. This method reimplements logging.Handler.emit that is fired in every logged message. - QObject.emit gets in the way on the PySide signal model but we - workarouded that issue. :param logRecord: the record emitted by the logging module. :type logRecord: logging.LogRecord. @@ -83,17 +80,60 @@ class LeapLogHandler(logging.Handler, QtCore.QObject): self._set_format(logRecord.levelname) log = self.format(logRecord) log_item = {self.RECORD_KEY: logRecord, self.MESSAGE_KEY: log} - self._log_history.append(log_item) + self._qtsignal(log_item) + + +class HandlerAdapter(object): + """ + New style class that accesses all attributes from the LogHandler. + + Used as a workaround for a problem with multiple inheritance with Pyside + that surfaced under OSX with pyside 1.1.0. + """ + MESSAGE_KEY = 'message' + RECORD_KEY = 'record' + + def __init__(self, qtsignal): + self._handler = LogHandler(qtsignal=qtsignal) + + def setLevel(self, *args, **kwargs): + return self._handler.setLevel(*args, **kwargs) + + def handle(self, *args, **kwargs): + return self._handler.handle(*args, **kwargs) + + @property + def level(self): + return self._handler.level + + +class LeapLogHandler(QtCore.QObject, HandlerAdapter): + """ + Custom logging handler. It emits Qt signals so it can be plugged to a gui. + + Its inner handler also stores an history of logs that can be fetched after + having been connected to a gui. + """ + # All dicts returned are of the form + # {'record': LogRecord, 'message': str} + new_log = QtCore.Signal(dict) + + def __init__(self): + QtCore.QObject.__init__(self) + HandlerAdapter.__init__(self, qtsignal=self.qtsignal) + def qtsignal(self, log_item): # WARNING: the new-style connection does NOT work because PySide # translates the emit method to self.emit, and that collides with # the emit method for logging.Handler # self.new_log.emit(log_item) - QtCore.QObject.emit(self, QtCore.SIGNAL('new_log(PyObject)'), log_item) + QtCore.QObject.emit( + self, + QtCore.SIGNAL('new_log(PyObject)'), log_item) @property def log_history(self): """ Returns the history of the logged messages. """ - return self._log_history + return self._handler._log_history |