__init__.py

import logging
from logging.handlers import RotatingFileHandler
import os
import sys
import HardwareRepository

#
# Add path to root BlissFramework directory
#
hwrpath = os.path.dirname(__file__)
sys.path.insert(0, hwrpath)

#
# this makes it possible for Hardware Objects to import
# standard Hardware Objects easily
#
def getStdHardwareObjectsPath():
    import HardwareObjects #first looks in containing package
    return os.path.dirname(HardwareObjects.__file__)

sys.path.insert(0, getStdHardwareObjectsPath())

hwobj_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)),
                         "HardwareObjects")
hwobj_dir_list = []
hwobj_dir_list.append(hwobj_dir)

for sub_dir in ("abstract", "generic", "mockup", "core", "sample_changer", "EMBL"):
    hwobj_dir_list.append(os.path.join(hwobj_dir, sub_dir))

HardwareRepository.addHardwareObjectsDirs(hwobj_dir_list)

#
# create the HardwareRepository logger
#
_hwr_logger = logging.getLogger('HWR')
_hwr_logger.setLevel(logging.DEBUG)
_oldLevel = logging.DEBUG
_hwr_formatter = logging.Formatter('%(asctime)s |%(levelname)-7s| %(message)s')

if len(logging.root.handlers) == 0:
    #
    # log to stdout
    #
    _hdlr = logging.StreamHandler(sys.stdout)
    _hdlr.setFormatter(_hwr_formatter)
    _hwr_logger.addHandler(_hdlr)
    

def removeLoggingHandlers():
    for handler in _hwr_logger.handlers:
        _hwr_logger.removeHandler(handler)


def setLoggingOff():
    global _oldLevel
    _oldLevel = _hwr_logger.getEffectiveLevel()
    _hwr_logger.setLevel(1000) #disable all logging events less severe than 1000 (CRITICAL is 50...)


def setLoggingOn():
    _hwr_logger.setLevel(_oldLevel)
    

def addLoggingHandler(handler):
    _hwr_logger.addHandler(handler)

    
def setLoggingHandler(handler):
    global _hdlr
    
    removeLoggingHandlers() #_logger.removeHandler(_hdlr)

    _hdlr = handler
    addLoggingHandler(_hdlr)


def setLogFile(filename):
    #
    # log to rotating files
    #
    hdlr = RotatingFileHandler(filename, 'a', 1048576, 5) #1 MB by file, 5 files max.           
    hdlr.setFormatter(_hwr_formatter)
    
    setLoggingHandler(hdlr)