vendordata_json.py 文件源码

def __init__(self, *args, **kwargs):
        super(JsonFileVendorData, self).__init__(*args, **kwargs)
        data = {}
        fpath = CONF.vendordata_jsonfile_path
        logprefix = "%s[%s]:" % (file_opt.name, fpath)
        if fpath:
            try:
                with open(fpath, "r") as fp:
                    data = jsonutils.load(fp)
            except IOError as e:
                if e.errno == errno.ENOENT:
                    LOG.warning(_LW("%(logprefix)s file does not exist"),
                                {'logprefix': logprefix})
                else:
                    LOG.warning(_LW("%(logprefix)s unexpected IOError when "
                                    "reading"), {'logprefix': logprefix})
                raise e
            except ValueError:
                LOG.warning(_LW("%(logprefix)s failed to load json"),
                            {'logprefix': logprefix})
                raise

        self._data = data