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authorTomás Touceda <chiiph@leap.se>2013-07-12 12:26:42 -0300
committerTomás Touceda <chiiph@leap.se>2013-07-12 12:26:42 -0300
commit55f7638041a66cfd94baf49df947e71e50bedd3a (patch)
treed2dbef6b15e5f95e59259a61d28ffce316cc75a8 /src/leap/util/streamtologger.py
parent0ba84b70e18450e13b9270b552def941fb5cb0d6 (diff)
parente008d98a9407f3cd2ac4cee88c78c5c577bfaffe (diff)
Merge remote-tracking branch 'ivan/feature/3134_redirect-output-to-logger' into develop
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+# -*- coding: utf-8 -*-
+# streamtologger.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+"""
+Stream object that redirects writes to a logger instance.
+"""
+import logging
+
+
+class StreamToLogger(object):
+ """
+ Fake file-like stream object that redirects writes to a logger instance.
+
+ Credits to:
+ http://www.electricmonk.nl/log/2011/08/14/\
+ redirect-stdout-and-stderr-to-a-logger-in-python/
+ """
+ def __init__(self, logger, log_level=logging.INFO):
+ """
+ Constructor, defines the logger and level to use to log messages.
+
+ :param logger: logger object to log messages.
+ :type logger: logging.Handler
+ :param log_level: the level to use to log messages through the logger.
+ :type log_level: int
+ look at logging-levels in 'logging' docs.
+ """
+ self._logger = logger
+ self._log_level = log_level
+
+ def write(self, data):
+ """
+ Simulates the 'write' method in a file object.
+ It writes the data receibed in buf to the logger 'self._logger'.
+
+ :param data: data to write to the 'file'
+ :type data: str
+ """
+ for line in data.rstrip().splitlines():
+ self._logger.log(self._log_level, line.rstrip())
+
+ def flush(self):
+ """
+ Dummy method. Needed to replace the twisted.log output.
+ """
+ pass