func RangeSub(large *mesosproto.Value_Range, small *mesosproto.Value_Range) (*mesosproto.Value_Range, *mesosproto.Value_Range) {
subedLeftBegin := large.GetBegin()
subedLeftEnd := small.GetBegin() - 1
subedLeftRange := &mesosproto.Value_Range{
Begin: &subedLeftBegin,
End: &subedLeftEnd,
}
if subedLeftEnd < subedLeftBegin {
subedLeftRange = nil
}
subedRightBegin := small.GetEnd() + 1
subedRightEnd := large.GetEnd()
subedRightRange := &mesosproto.Value_Range{
Begin: &subedRightBegin,
End: &subedRightEnd,
}
if subedRightBegin > subedRightEnd {
subedRightRange = nil
}
return subedLeftRange, subedRightRange
}
func RangeInside(large *mesosproto.Value_Range, small *mesosproto.Value_Range) bool {
return large.GetBegin() <= small.GetBegin() && large.GetEnd() >= small.GetEnd()
}