Python log.removeObserver方法代码示例

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_malformedHeaderCGI(self):
        """
        Check for the error message in the duplicated header
        """
        cgiFilename = self.writeCGI(BROKEN_HEADER_CGI)

        portnum = self.startServer(cgiFilename)
        url = "http://localhost:%d/cgi" % (portnum,)
        agent = client.Agent(reactor)
        d = agent.request(b"GET", url)
        d.addCallback(discardBody)
        loggedMessages = []

        def addMessage(eventDict):
            loggedMessages.append(log.textFromEventDict(eventDict))

        log.addObserver(addMessage)
        self.addCleanup(log.removeObserver, addMessage)

        def checkResponse(ignored):
            self.assertIn("ignoring malformed CGI header: 'XYZ'",
                          loggedMessages)

        d.addCallback(checkResponse)
        return d 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_errorMessageOnConnectionLostBeforeGenerationFailedDoesNotConfuse(self):
        """
        If the request passed to L{HTTP11ClientProtocol} finished generation
        with an error after the L{HTTP11ClientProtocol}'s connection has been
        lost, an error is logged that gives a non-confusing hint to user on what
        went wrong.
        """
        errors = []
        log.addObserver(errors.append)
        self.addCleanup(log.removeObserver, errors.append)

        def check(ignore):
            error = errors[0]
            self.assertEqual(error[u'why'],
                              u'Error writing request, but not in valid state '
                              u'to finalize request: CONNECTION_LOST')

        return self.test_connectionLostDuringRequestGeneration(
            'errback').addCallback(check) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_logStderr(self):
        """
        When the _errFlag is set to L{StandardErrorBehavior.LOG},
        L{endpoints._WrapIProtocol} logs stderr (in childDataReceived).
        """
        d = self.ep.connect(self.factory)
        self.successResultOf(d)
        wpp = self.reactor.processProtocol
        log.addObserver(self._stdLog)
        self.addCleanup(log.removeObserver, self._stdLog)

        wpp.childDataReceived(2, b'stderr1')
        self.assertEqual(self.eventLog['executable'], wpp.executable)
        self.assertEqual(self.eventLog['data'], b'stderr1')
        self.assertEqual(self.eventLog['protocol'], wpp.protocol)
        self.assertIn(
            'wrote stderr unhandled by',
            log.textFromEventDict(self.eventLog)) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_quiet(self):
        """
        L{TLSMemoryBIOFactory.doStart} and L{TLSMemoryBIOFactory.doStop} do
        not log any messages.
        """
        contextFactory = ServerTLSContext()

        logs = []
        logger = logs.append
        log.addObserver(logger)
        self.addCleanup(log.removeObserver, logger)
        wrappedFactory = ServerFactory()
        # Disable logging on the wrapped factory:
        wrappedFactory.doStart = lambda: None
        wrappedFactory.doStop = lambda: None
        factory = TLSMemoryBIOFactory(contextFactory, False, wrappedFactory)
        factory.doStart()
        factory.doStop()
        self.assertEqual(logs, []) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_startLoggingTwice(self):
        """
        There are some obscure error conditions that can occur when logging is
        started twice. See http://twistedmatrix.com/trac/ticket/3289 for more
        information.
        """
        self._startLoggingCleanup()
        # The bug is particular to the way that the t.p.log 'global' function
        # handle stdout. If we use our own stream, the error doesn't occur. If
        # we use our own LogPublisher, the error doesn't occur.
        sys.stdout = StringIO()

        def showError(eventDict):
            if eventDict['isError']:
                sys.__stdout__.write(eventDict['failure'].getTraceback())

        log.addObserver(showError)
        self.addCleanup(log.removeObserver, showError)
        observer = log.startLogging(sys.stdout)
        self.addCleanup(observer.stop)
        # At this point, we expect that sys.stdout is a StdioOnnaStick object.
        self.assertIsInstance(sys.stdout, LoggingFile)
        fakeStdout = sys.stdout
        observer = log.startLogging(sys.stdout)
        self.assertIs(sys.stdout, fakeStdout) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_failureLogger(self):
        """
        The reason argument passed to log.err() appears in the report
        generated by DefaultObserver.
        """
        self.catcher = []
        self.observer = self.catcher.append
        log.addObserver(self.observer)
        self.addCleanup(log.removeObserver, self.observer)

        obs = log.DefaultObserver()
        obs.stderr = StringIO()
        obs.start()
        self.addCleanup(obs.stop)

        reason = "The reason."
        log.err(Exception(), reason)
        errors = self.flushLoggedErrors()

        self.assertIn(reason, obs.stderr.getvalue())
        self.assertEqual(len(errors), 1) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_outputReceivedCompleteLine(self):
        """
        Getting a complete output line generates a log message.
        """
        events = []
        self.addCleanup(log.removeObserver, events.append)
        log.addObserver(events.append)
        self.pm.addProcess("foo", ["foo"])
        # Schedule the process to start
        self.pm.startService()
        # Advance the reactor to start the process
        self.reactor.advance(0)
        self.assertIn("foo", self.pm.protocols)
        # Long time passes
        self.reactor.advance(self.pm.threshold)
        # Process greets
        self.pm.protocols["foo"].outReceived(b'hello world!\n')
        self.assertEquals(len(events), 1)
        message = events[0]['message']
        self.assertEquals(message, tuple([u'[foo] hello world!'])) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_outputReceivedCompleteLineInvalidUTF8(self):
        """
        Getting invalid UTF-8 results in the repr of the raw message
        """
        events = []
        self.addCleanup(log.removeObserver, events.append)
        log.addObserver(events.append)
        self.pm.addProcess("foo", ["foo"])
        # Schedule the process to start
        self.pm.startService()
        # Advance the reactor to start the process
        self.reactor.advance(0)
        self.assertIn("foo", self.pm.protocols)
        # Long time passes
        self.reactor.advance(self.pm.threshold)
        # Process greets
        self.pm.protocols["foo"].outReceived(b'\xffhello world!\n')
        self.assertEquals(len(events), 1)
        messages = events[0]['message']
        self.assertEquals(len(messages), 1)
        message = messages[0]
        tag, output = message.split(' ', 1)
        self.assertEquals(tag, '[foo]')
        self.assertEquals(output, repr(b'\xffhello world!')) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_outputReceivedPartialLine(self):
        """
        Getting partial line results in no events until process end
        """
        events = []
        self.addCleanup(log.removeObserver, events.append)
        log.addObserver(events.append)
        self.pm.addProcess("foo", ["foo"])
        # Schedule the process to start
        self.pm.startService()
        # Advance the reactor to start the process
        self.reactor.advance(0)
        self.assertIn("foo", self.pm.protocols)
        # Long time passes
        self.reactor.advance(self.pm.threshold)
        # Process greets
        self.pm.protocols["foo"].outReceived(b'hello world!')
        self.assertEquals(len(events), 0)
        self.pm.protocols["foo"].processEnded(Failure(ProcessDone(0)))
        self.assertEquals(len(events), 1)
        message = events[0]['message']
        self.assertEquals(message, tuple([u'[foo] hello world!'])) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_startStopObserver(self):
        """
        Test that start and stop methods of the observer actually register
        and unregister to the log system.
        """
        oldAddObserver = log.addObserver
        oldRemoveObserver = log.removeObserver
        l = []
        try:
            log.addObserver = l.append
            log.removeObserver = l.remove
            obs = log.PythonLoggingObserver()
            obs.start()
            self.assertEqual(l[0], obs.emit)
            obs.stop()
            self.assertEqual(len(l), 0)
        finally:
            log.addObserver = oldAddObserver
            log.removeObserver = oldRemoveObserver 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_errorMessageOnConnectionLostBeforeGenerationFailedDoesNotConfuse(self):
        """
        If the request passed to L{HTTP11ClientProtocol} finished generation
        with an error after the L{HTTP11ClientProtocol}'s connection has been
        lost, an error is logged that gives a non-confusing hint to user on what
        went wrong.
        """
        errors = []
        log.addObserver(errors.append)
        self.addCleanup(log.removeObserver, errors.append)

        def check(ignore):
            error = errors[0]
            self.assertEquals(error['why'],
                              'Error writing request, but not in valid state '
                              'to finalize request: CONNECTION_LOST')

        return self.test_connectionLostDuringRequestGeneration(
            'errback').addCallback(check) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_stop(self):
        """
        L{app.AppLogger.stop} removes the observer created in C{start}, and
        reinitialize its C{_observer} so that if C{stop} is called several
        times it doesn't break.
        """
        removed = []
        observer = object()
        def remove(observer):
            removed.append(observer)
        self.patch(log, 'removeObserver', remove)
        logger = app.AppLogger({})
        logger._observer = observer
        logger.stop()
        self.assertEquals(removed, [observer])
        logger.stop()
        self.assertEquals(removed, [observer])
        self.assertIdentical(logger._observer, None) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_startLoggingTwice(self):
        """
        There are some obscure error conditions that can occur when logging is
        started twice. See http://twistedmatrix.com/trac/ticket/3289 for more
        information.
        """
        # The bug is particular to the way that the t.p.log 'global' function
        # handle stdout. If we use our own stream, the error doesn't occur. If
        # we use our own LogPublisher, the error doesn't occur.
        sys.stdout = StringIO()
        self.addCleanup(setattr, sys, 'stdout', sys.__stdout__)

        def showError(eventDict):
            if eventDict['isError']:
                sys.__stdout__.write(eventDict['failure'].getTraceback())

        log.addObserver(showError)
        self.addCleanup(log.removeObserver, showError)
        observer = log.startLogging(sys.stdout)
        self.addCleanup(observer.stop)
        # At this point, we expect that sys.stdout is a StdioOnnaStick object.
        self.assertIsInstance(sys.stdout, log.StdioOnnaStick)
        fakeStdout = sys.stdout
        observer = log.startLogging(sys.stdout)
        self.assertIdentical(sys.stdout, fakeStdout) 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_startStopObserver(self):
        """
        Test that start and stop methods of the observer actually register
        and unregister to the log system.
        """
        oldAddObserver = log.addObserver
        oldRemoveObserver = log.removeObserver
        l = []
        try:
            log.addObserver = l.append
            log.removeObserver = l.remove
            obs = log.PythonLoggingObserver()
            obs.start()
            self.assertEquals(l[0], obs.emit)
            obs.stop()
            self.assertEquals(len(l), 0)
        finally:
            log.addObserver = oldAddObserver
            log.removeObserver = oldRemoveObserver 

# 需要导入模块: from twisted.python import log [as 别名]
# 或者: from twisted.python.log import removeObserver [as 别名]
def test_wsgiErrors(self):
        """
        The C{'wsgi.errors'} key of the C{environ} C{dict} passed to the
        application is a file-like object (as defined in the U{Input and Errors
        Streams<http://www.python.org/dev/peps/pep-0333/#input-and-error-streams>}
        section of PEP 333) which converts bytes written to it into events for
        the logging system.
        """
        events = []
        addObserver(events.append)
        self.addCleanup(removeObserver, events.append)

        errors = self.render('GET', '1.1', [], [''])
        def cbErrors(result):
            environ, startApplication = result
            errors = environ['wsgi.errors']
            errors.write('some message\n')
            errors.writelines(['another\nmessage\n'])
            errors.flush()
            self.assertEqual(events[0]['message'], ('some message\n',))
            self.assertEqual(events[0]['system'], 'wsgi')
            self.assertTrue(events[0]['isError'])
            self.assertEqual(events[1]['message'], ('another\nmessage\n',))
            self.assertEqual(events[1]['system'], 'wsgi')
            self.assertTrue(events[1]['isError'])
            self.assertEqual(len(events), 2)
        errors.addCallback(cbErrors)
        return errors