Page History

public class Metrics {

    /** The metrics reporters container. */
  	private final List<MetricsReporter> reporters = new ArrayList<>();

	/** The metrics group. */
	private final Map<String, MetricGroup> metricGroups = new HashMap<>();

	/** Add a metrics reporter. */
	public void addReporter(MetricsReporter reporter) {};

	/** Add a metric group. */
	public void addGroup(String groupName, MetricGroup group) {};

	/** Get metrics reporters. */
	public List<MetricsReporter> getReporters() {};

	/** Get metric groups. */
	public Map<String, MetricGroup> getMetricGroups() {};
}

public class MetricGroup {
	private final String groupName;
	
	/** tags of metric group. */
	private final Map<String, Set<String>> tags = new HashMap<>();

	/** Map of gauge metrics. */
    private final Map<String, Gauge<?>> gauges = new HashMap<>();

    /** Map of counter metrics. */
    private final Map<String, Counter> counters = new HashMap<>();

	/** Map of counter metrics. */
    private final Map<String, Histogram> histograms = new HashMap<>();

   /** Register gauge metric. */
 	public void gauge(String name, Gauge gauge) {}

	/** Register counter metric. */
	public void counter(String name, Counter counter) {}

	/** Register histogram metric. */
	public void histogram(String name, Histogram counter) {}    

	/** Add tag for metric group. */
	public void addTag(String tag, String value) {}  
}