SSM_PiMonitorElewarr/pimonitor/PM.py

"""
Created on 22-04-2013

@author: citan
"""


class PM(object):
    _instance = None

    def __new__(cls, *args, **kwargs):
        if not cls._instance:
            cls._instance = super(PM, cls).__new__(cls, *args)
        return cls._instance

    def __init__(self):
        pass

    def set(self, log):
        self._log = log

    @classmethod
    def log(cls, message, mid=0):
        return PM().log_impl(message, mid)

    def log_impl(self, message, mid):
        if self._log is not None:
            return self._log(message, mid)
        else:
            return -1