67 lines
2.4 KiB
Java
67 lines
2.4 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* Copyright 2015 Cloudius Systems
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*
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* Modified by Cloudius Systems
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*/
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package org.apache.cassandra.metrics;
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import javax.management.MalformedObjectNameException;
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/**
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* Metrics for {@code ICache}.
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*/
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public class CacheMetrics implements Metrics {
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private final String type;
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private final String url;
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private String compose(String value) {
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return "/cache_service/metrics/" + url + "/" + value;
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}
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/**
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* Create metrics for given cache.
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*
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* @param type
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* Type of Cache to identify metrics.
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* @param cache
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* Cache to measure metrics
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*/
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public CacheMetrics(String type, final String url) {
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this.type = type;
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this.url = url;
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}
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@Override
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public void register(MetricsRegistry registry) throws MalformedObjectNameException {
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MetricNameFactory factory = new DefaultNameFactory("Cache", type);
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registry.register(() -> registry.gauge(compose("capacity")), factory.createMetricName("Capacity"));
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registry.register(() -> registry.meter(compose("hits_moving_avrage")), factory.createMetricName("Hits"));
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registry.register(() -> registry.meter(compose("requests_moving_avrage")),
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factory.createMetricName("Requests"));
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registry.register(() -> registry.gauge(Double.class, compose("hit_rate")), factory.createMetricName("HitRate"));
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registry.register(() -> registry.gauge(compose("size")), factory.createMetricName("Size"));
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registry.register(() -> registry.gauge(Integer.class, compose("entries")), factory.createMetricName("Entries"));
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}
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}
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