| /* |
| * Copyright (c) 2012, Niclas Hedhman. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * |
| * You may obtain a copy of the License at |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.qi4j.spi.metrics; |
| |
| import java.util.concurrent.TimeUnit; |
| import org.qi4j.api.metrics.Metric; |
| import org.qi4j.api.metrics.MetricsCounter; |
| import org.qi4j.api.metrics.MetricsCounterFactory; |
| import org.qi4j.api.metrics.MetricsGauge; |
| import org.qi4j.api.metrics.MetricsGaugeFactory; |
| import org.qi4j.api.metrics.MetricsHealthCheck; |
| import org.qi4j.api.metrics.MetricsHealthCheckFactory; |
| import org.qi4j.api.metrics.MetricsHistogram; |
| import org.qi4j.api.metrics.MetricsHistogramFactory; |
| import org.qi4j.api.metrics.MetricsMeter; |
| import org.qi4j.api.metrics.MetricsMeterFactory; |
| import org.qi4j.api.metrics.MetricsTimer; |
| import org.qi4j.api.metrics.MetricsTimerFactory; |
| import org.qi4j.functional.Iterables; |
| |
| /** |
| * Factory for Metrics null objects. |
| */ |
| public final class NullMetricsFactory |
| { |
| public static class NullCounterFactory implements MetricsCounterFactory |
| { |
| @Override |
| public MetricsCounter createCounter( Class<?> origin, String name ) |
| { |
| return DefaultMetric.NULL; |
| } |
| |
| @Override |
| public Iterable<Metric> registered() |
| { |
| return Iterables.iterable( (Metric) DefaultMetric.NULL ); |
| } |
| } |
| |
| public static class NullGaugeFactory implements MetricsGaugeFactory |
| { |
| @Override |
| @SuppressWarnings( "unchecked" ) |
| public <T> MetricsGauge<T> registerGauge( Class<?> origin, String name, MetricsGauge<T> gauge ) |
| { |
| return DefaultMetric.NULL; |
| } |
| |
| @Override |
| public Iterable<Metric> registered() |
| { |
| return Iterables.iterable( (Metric) DefaultMetric.NULL ); |
| } |
| } |
| |
| public static class NullHealthCheckFactory implements MetricsHealthCheckFactory |
| { |
| @Override |
| public MetricsHealthCheck registerHealthCheck( Class<?> origin, String name, MetricsHealthCheck check ) |
| { |
| return DefaultMetric.NULL; |
| } |
| |
| @Override |
| public Iterable<Metric> registered() |
| { |
| return Iterables.iterable( (Metric) DefaultMetric.NULL ); |
| } |
| } |
| |
| public static class NullHistogramFactory implements MetricsHistogramFactory |
| { |
| @Override |
| public MetricsHistogram createHistogram( Class<?> origin, String name ) |
| { |
| return DefaultMetric.NULL; |
| } |
| |
| @Override |
| public Iterable<Metric> registered() |
| { |
| return Iterables.iterable( (Metric) DefaultMetric.NULL ); |
| } |
| } |
| |
| public static class NullMeterFactory implements MetricsMeterFactory |
| { |
| @Override |
| public MetricsMeter createMeter( Class<?> origin, String name, String eventType, TimeUnit rate ) |
| { |
| |
| return DefaultMetric.NULL; |
| } |
| |
| @Override |
| public Iterable<Metric> registered() |
| { |
| return Iterables.iterable( (Metric) DefaultMetric.NULL ); |
| } |
| } |
| |
| public static class NullTimerFactory implements MetricsTimerFactory |
| { |
| @Override |
| public MetricsTimer createTimer( Class<?> origin, String name, TimeUnit duration, TimeUnit rate ) |
| { |
| return DefaultMetric.NULL; |
| } |
| |
| @Override |
| public Iterable<Metric> registered() |
| { |
| return Iterables.iterable( (Metric) DefaultMetric.NULL ); |
| } |
| } |
| } |