/usr/lib/python2.7/dist-packages/sardana/tango/core/attributehandler.py is in python-sardana 1.6.1-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | #!/usr/bin/env python
##############################################################################
##
## This file is part of Sardana
##
## http://www.sardana-controls.org/
##
## Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
##
## Sardana is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Sardana 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 Lesser General Public License for more details.
##
## You should have received a copy of the GNU Lesser General Public License
## along with Sardana. If not, see <http://www.gnu.org/licenses/>.
##
##############################################################################
"""This is the main macro server module"""
__all__ = ["AttributeLogHandler", "AttributeBufferedLogHandler"]
__docformat__ = 'restructuredtext'
import logging
import weakref
import operator
from taurus.core.util.containers import LIFO
class AttributeLogHandler(logging.Handler):
def __init__(self, dev, attr_name, level=logging.NOTSET, max_buff_size=0):
logging.Handler.__init__(self, level)
self._attr_name = attr_name
self._level = level
self._max_buff_size = max_buff_size
self._dev = weakref.ref(dev)
self._attr = dev.get_device_attr().get_attr_by_name(attr_name)
self._buff = LIFO(max_buff_size)
def emit(self, record):
output = self.getRecordMessage(record)
self.appendBuffer(output)
self.sendText(output)
def getRecordMessage(self, record):
return self.format(record).split('\n')
def sendText(self, output):
dev = self._dev()
attr = self._attr
if attr is None or dev is None:
return
dev.set_attribute(attr, output)
def read(self, attr):
"""Read from the buffer and assign to the attribute value"""
attr.set_value(self._buff.getCopy())
def clearBuffer(self):
self._buff.clear()
def appendBuffer(self, d):
if operator.isSequenceType(d):
if isinstance(d, (str, unicode)):
self._buff.append(d)
else:
self._buff.extend(d)
else:
self._buff.append(str(d))
def sync(self):
pass
def finish(self):
pass
AttributeBufferedLogHandler = AttributeLogHandler
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