Main entry point.

def run(self, error_on_warning=False, verbose=False):
        """
        Main entry point.
        """
        warnings, criticals = self.check_limits(verbose=verbose)
        # output
        if len(warnings) > 0:
            print("\nWARNING:\n")
            for w in warnings:
                print(w)
        if len(criticals) > 0:
            print("\nCRITICAL:\n")
            for c in criticals:
                print(c)

        # summary
        if len(warnings) > 0 or len(criticals) > 0:
            print("\n{c} limit(s) above CRITICAL threshold; {w} limit(s) above "
                  "WARNING threshold".format(c=len(criticals), w=len(warnings)))
        else:
            print("All limits are within thresholds.")
        if (len(warnings) > 0 and error_on_warning) or len(criticals) > 0:
            raise SystemExit(1)