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Diffstat (limited to 'framework/src/onos/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java')
| -rw-r--r-- | framework/src/onos/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java | 304 |
1 files changed, 0 insertions, 304 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java deleted file mode 100644 index 6c9314ad..00000000 --- a/framework/src/onos/utils/misc/src/main/java/org/onlab/metrics/MetricsManager.java +++ /dev/null @@ -1,304 +0,0 @@ -/* - * Copyright 2014 Open Networking Laboratory - * - * 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.onlab.metrics; - -import java.util.Map; -import java.util.concurrent.ConcurrentHashMap; -import java.util.concurrent.ConcurrentMap; - -import com.codahale.metrics.Counter; -import com.codahale.metrics.Gauge; -import com.codahale.metrics.Histogram; -import com.codahale.metrics.Meter; -import com.codahale.metrics.Metric; -import com.codahale.metrics.MetricFilter; -import com.codahale.metrics.MetricRegistry; -import com.codahale.metrics.Timer; - -/** - * This class holds the Metrics registry for ONOS. - * All metrics (Counter, Histogram, Timer, Meter, Gauge) use a hierarchical - * string-based naming scheme: COMPONENT.FEATURE.NAME. - * Example: "Topology.Counters.TopologyUpdates". - * The COMPONENT and FEATURE names have to be registered in advance before - * a metric can be created. Example: - * <pre> - * <code> - * private final MetricsManager.MetricsComponent COMPONENT = - * MetricsManager.registerComponent("Topology"); - * private final MetricsManager.MetricsFeature FEATURE = - * COMPONENT.registerFeature("Counters"); - * private final Counter counterTopologyUpdates = - * MetricsManager.createCounter(COMPONENT, FEATURE, "TopologyUpdates"); - * </code> - * </pre> - * Gauges are slightly different because they are not created directly in - * this class, but are allocated by the caller and passed in for registration: - * <pre> - * <code> - * private final Gauge<Long> gauge = - * new {@literal Gauge<Long>}() { - * {@literal @}Override - * public Long getValue() { - * return gaugeValue; - * } - * }; - * MetricsManager.registerMetric(COMPONENT, FEATURE, GAUGE_NAME, gauge); - * </code> - * </pre> - */ -public class MetricsManager implements MetricsService { - - /** - * Registry to hold the Components defined in the system. - */ - private ConcurrentMap<String, MetricsComponent> componentsRegistry = - new ConcurrentHashMap<>(); - - /** - * Registry for the Metrics objects created in the system. - */ - private MetricRegistry metricsRegistry = new MetricRegistry(); - - /** - * Clears the internal state. - */ - protected void clear() { - this.componentsRegistry = new ConcurrentHashMap<>(); - this.metricsRegistry = new MetricRegistry(); - } - - /** - * Registers a component. - * - * @param name name of the Component to register - * @return MetricsComponent object that can be used to create Metrics. - */ - @Override - public MetricsComponent registerComponent(final String name) { - MetricsComponent component = componentsRegistry.get(name); - if (component == null) { - final MetricsComponent createdComponent = - new MetricsComponent(name); - component = componentsRegistry.putIfAbsent(name, createdComponent); - if (component == null) { - component = createdComponent; - } - } - return component; - } - - /** - * Generates a name for a Metric from its component and feature. - * - * @param component component the metric is defined in - * @param feature feature the metric is defined in - * @param metricName local name of the metric - * - * @return full name of the metric - */ - private String generateName(final MetricsComponent component, - final MetricsFeature feature, - final String metricName) { - return MetricRegistry.name(component.getName(), - feature.getName(), - metricName); - } - - /** - * Creates a Counter metric. - * - * @param component component the Counter is defined in - * @param feature feature the Counter is defined in - * @param metricName local name of the metric - * @return the created Counter Meteric - */ - @Override - public Counter createCounter(final MetricsComponent component, - final MetricsFeature feature, - final String metricName) { - final String name = generateName(component, feature, metricName); - return metricsRegistry.counter(name); - } - - /** - * Creates a Histogram metric. - * - * @param component component the Histogram is defined in - * @param feature feature the Histogram is defined in - * @param metricName local name of the metric - * @return the created Histogram Metric - */ - @Override - public Histogram createHistogram(final MetricsComponent component, - final MetricsFeature feature, - final String metricName) { - final String name = generateName(component, feature, metricName); - return metricsRegistry.histogram(name); - } - - /** - * Creates a Timer metric. - * - * @param component component the Timer is defined in - * @param feature feature the Timer is defined in - * @param metricName local name of the metric - * @return the created Timer Metric - */ - @Override - public Timer createTimer(final MetricsComponent component, - final MetricsFeature feature, - final String metricName) { - final String name = generateName(component, feature, metricName); - return metricsRegistry.timer(name); - } - - /** - * Creates a Meter metric. - * - * @param component component the Meter is defined in - * @param feature feature the Meter is defined in - * @param metricName local name of the metric - * @return the created Meter Metric - */ - @Override - public Meter createMeter(final MetricsComponent component, - final MetricsFeature feature, - final String metricName) { - final String name = generateName(component, feature, metricName); - return metricsRegistry.meter(name); - } - - /** - * Registers an already created Metric. This is used for situation where a - * caller needs to allocate its own Metric, but still register it with the - * system. - * - * @param <T> Metric type - * @param component component the Metric is defined in - * @param feature feature the Metric is defined in - * @param metricName local name of the metric - * @param metric Metric to register - * @return the registered Metric - */ - @Override - public <T extends Metric> T registerMetric( - final MetricsComponent component, - final MetricsFeature feature, - final String metricName, - final T metric) { - final String name = generateName(component, feature, metricName); - metricsRegistry.register(name, metric); - return metric; - } - - /** - * Removes the metric with the given name. - * - * @param component component the Metric is defined in - * @param feature feature the Metric is defined in - * @param metricName local name of the metric - * @return true if the metric existed and was removed, otherwise false - */ - @Override - public boolean removeMetric(final MetricsComponent component, - final MetricsFeature feature, - final String metricName) { - final String name = generateName(component, feature, metricName); - return metricsRegistry.remove(name); - } - - /** - * Fetches the existing Timers. - * - * @param filter filter to use to select Timers - * @return a map of the Timers that match the filter, with the key as the - * name String to the Timer. - */ - @Override - public Map<String, Timer> getTimers(final MetricFilter filter) { - return metricsRegistry.getTimers(filter); - } - - /** - * Fetches the existing Gauges. - * - * @param filter filter to use to select Gauges - * @return a map of the Gauges that match the filter, with the key as the - * name String to the Gauge. - */ - @Override - public Map<String, Gauge> getGauges(final MetricFilter filter) { - return metricsRegistry.getGauges(filter); - } - - /** - * Fetches the existing Counters. - * - * @param filter filter to use to select Counters - * @return a map of the Counters that match the filter, with the key as the - * name String to the Counter. - */ - @Override - public Map<String, Counter> getCounters(final MetricFilter filter) { - return metricsRegistry.getCounters(filter); - } - - /** - * Fetches the existing Meters. - * - * @param filter filter to use to select Meters - * @return a map of the Meters that match the filter, with the key as the - * name String to the Meter. - */ - @Override - public Map<String, Meter> getMeters(final MetricFilter filter) { - return metricsRegistry.getMeters(filter); - } - - /** - * Fetches the existing Histograms. - * - * @param filter filter to use to select Histograms - * @return a map of the Histograms that match the filter, with the key as - * the name String to the Histogram. - */ - @Override - public Map<String, Histogram> getHistograms(final MetricFilter filter) { - return metricsRegistry.getHistograms(filter); - } - - /** - * Removes all Metrics that match a given filter. - * - * @param filter filter to use to select the Metrics to remove. - */ - @Override - public void removeMatching(final MetricFilter filter) { - metricsRegistry.removeMatching(filter); - } - - /** - * Fetches the existing Meters. - * - * - * @return a map of all metrics with the key as the - * name String to the Meter. - */ - public Map<String, Metric> getMetrics() { - return metricsRegistry.getMetrics(); - } -} |