/** * Decrement a metric by name. * * @param name of the metric * @param factory to lazily create the metric if not null */ public void decr(String name, MetricMutableFactory factory) { MetricMutable m = metricsMap.get(name); if (m != null) { if (m instanceof MetricMutableGauge<?>) { ((MetricMutableGauge<?>) m).decr(); } else { throw new MetricsException("Unsupported decr() for metric " + name); } } else if (factory != null) { metricsMap.put(name, factory.newMetric(name)); decr(name, null); } else { throw new MetricsException("Metric " + name + " doesn't exist"); } }
/** * Decrement a metric by name. * * @param name of the metric */ public void decr(String name) { decr(name, mf); }