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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this file,
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# You can obtain one at http://mozilla.org/MPL/2.0/.
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from logging import getLogger as getSysLogger
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# Some of the build slave environments don't see the following when doing
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# 'from logging import *'
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# see https://bugzilla.mozilla.org/show_bug.cgi?id=700415#c35
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from logging import getLoggerClass, addLevelName, setLoggerClass, shutdown
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_LoggerClass = getLoggerClass()
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# Define mozlog specific log levels
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START = _default_level + 1
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END = _default_level + 2
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PASS = _default_level + 3
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KNOWN_FAIL = _default_level + 4
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FAIL = _default_level + 5
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# Define associated text of log levels
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addLevelName(START, 'TEST-START')
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addLevelName(END, 'TEST-END')
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addLevelName(PASS, 'TEST-PASS')
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addLevelName(KNOWN_FAIL, 'TEST-KNOWN-FAIL')
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addLevelName(FAIL, 'TEST-UNEXPECTED-FAIL')
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class _MozLogger(_LoggerClass):
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MozLogger class which adds three convenience log levels
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related to automated testing in Mozilla
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def testStart(self, message, *args, **kwargs):
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self.log(START, message, *args, **kwargs)
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def testEnd(self, message, *args, **kwargs):
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self.log(END, message, *args, **kwargs)
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def testPass(self, message, *args, **kwargs):
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self.log(PASS, message, *args, **kwargs)
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def testFail(self, message, *args, **kwargs):
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self.log(FAIL, message, *args, **kwargs)
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def testKnownFail(self, message, *args, **kwargs):
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self.log(KNOWN_FAIL, message, *args, **kwargs)
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class _MozFormatter(Formatter):
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MozFormatter class used for default formatting
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This can easily be overriden with the log handler's setFormatter()
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max_level_length = len('TEST-START')
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def format(self, record):
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record.message = record.getMessage()
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# Handles padding so record levels align nicely
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if len(record.levelname) > self.level_length:
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if len(record.levelname) <= self.max_level_length:
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self.level_length = len(record.levelname)
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pad = self.level_length - len(record.levelname) + 1
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fmt = '%(name)s %(levelname)s ' + sep + ' %(message)s'
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return fmt % record.__dict__
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def getLogger(name, logfile=None):
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Returns the logger with the specified name.
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If the logger doesn't exist, it is created.
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name - The name of the logger to retrieve
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[filePath] - If specified, the logger will log to the specified filePath
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Otherwise, the logger logs to stdout
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This parameter only has an effect if the logger doesn't exist
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setLoggerClass(_MozLogger)
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if name in Logger.manager.loggerDict:
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return getSysLogger(name)
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logger = getSysLogger(name)
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logger.setLevel(_default_level)
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handler = FileHandler(logfile)
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handler = StreamHandler()
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handler.setFormatter(_MozFormatter())
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logger.addHandler(handler)