| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.cassandra.distributed.impl; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.function.Predicate; |
| |
| import com.codahale.metrics.Counter; |
| import com.codahale.metrics.Gauge; |
| import com.codahale.metrics.Histogram; |
| import com.codahale.metrics.Meter; |
| import com.codahale.metrics.Snapshot; |
| import com.codahale.metrics.Timer; |
| import org.apache.cassandra.distributed.shared.Metrics; |
| import org.apache.cassandra.metrics.CassandraMetricsRegistry; |
| |
| /** |
| * Pulls metrics out of in-JVM dtest cluster instance. |
| */ |
| class InstanceMetrics implements Metrics |
| { |
| private final CassandraMetricsRegistry metricsRegistry; |
| |
| InstanceMetrics(CassandraMetricsRegistry metricsRegistry) |
| { |
| this.metricsRegistry = metricsRegistry; |
| } |
| |
| public List<String> getNames() |
| { |
| return new ArrayList<>(metricsRegistry.getNames()); |
| } |
| |
| public long getCounter(String name) |
| { |
| return metricsRegistry.getCounters().get(name).getCount(); |
| } |
| |
| public Map<String, Long> getCounters(Predicate<String> filter) |
| { |
| Map<String, Long> values = new HashMap<>(); |
| for (Map.Entry<String, Counter> e : metricsRegistry.getCounters().entrySet()) |
| { |
| if (filter.test(e.getKey())) |
| values.put(e.getKey(), e.getValue().getCount()); |
| } |
| return values; |
| } |
| |
| public double getHistogram(String name, MetricValue value) |
| { |
| Histogram histogram = metricsRegistry.getHistograms().get(name); |
| if (value == MetricValue.COUNT) |
| return histogram.getCount(); |
| |
| return getValue(histogram.getSnapshot(), value); |
| } |
| |
| public Map<String, Double> getHistograms(Predicate<String> filter, MetricValue value) |
| { |
| Map<String, Double> values = new HashMap<>(); |
| for (Map.Entry<String, Histogram> e : metricsRegistry.getHistograms().entrySet()) |
| { |
| if (filter.test(e.getKey())) |
| values.put(e.getKey(), getValue(e.getValue().getSnapshot(), value)); |
| } |
| return values; |
| } |
| |
| public Object getGauge(String name) |
| { |
| return metricsRegistry.getGauges().get(name).getValue(); |
| } |
| |
| public Map<String, Object> getGauges(Predicate<String> filter) |
| { |
| Map<String, Object> values = new HashMap<>(); |
| for (Map.Entry<String, Gauge> e : metricsRegistry.getGauges().entrySet()) |
| { |
| if (filter.test(e.getKey())) |
| values.put(e.getKey(), e.getValue().getValue()); |
| } |
| return values; |
| } |
| |
| public double getMeter(String name, Rate value) |
| { |
| return getRate(metricsRegistry.getMeters().get(name), value); |
| } |
| |
| public Map<String, Double> getMeters(Predicate<String> filter, Rate rate) |
| { |
| Map<String, Double> values = new HashMap<>(); |
| for (Map.Entry<String, Meter> e : metricsRegistry.getMeters().entrySet()) |
| { |
| if (filter.test(e.getKey())) |
| values.put(e.getKey(), getRate(e.getValue(), rate)); |
| } |
| return values; |
| } |
| |
| public double getTimer(String name, MetricValue value) |
| { |
| return getValue(metricsRegistry.getTimers().get(name).getSnapshot(), value); |
| } |
| |
| public Map<String, Double> getTimers(Predicate<String> filter, MetricValue value) |
| { |
| Map<String, Double> values = new HashMap<>(); |
| for (Map.Entry<String, Timer> e : metricsRegistry.getTimers().entrySet()) |
| { |
| if (filter.test(e.getKey())) |
| values.put(e.getKey(), getValue(e.getValue().getSnapshot(), value)); |
| } |
| |
| return values; |
| } |
| |
| static double getValue(Snapshot snapshot, MetricValue value) |
| { |
| switch (value) |
| { |
| case MEDIAN: |
| return snapshot.getMedian(); |
| case P75: |
| return snapshot.get75thPercentile(); |
| case P95: |
| return snapshot.get95thPercentile(); |
| case P98: |
| return snapshot.get98thPercentile(); |
| case P99: |
| return snapshot.get99thPercentile(); |
| case P999: |
| return snapshot.get999thPercentile(); |
| case MAX: |
| return snapshot.getMax(); |
| case MEAN: |
| return snapshot.getMean(); |
| case MIN: |
| return snapshot.getMin(); |
| case STDDEV: |
| return snapshot.getStdDev(); |
| default: |
| throw new RuntimeException("Shouldn't happen"); |
| } |
| } |
| |
| static double getRate(Meter meter, Rate rate) |
| { |
| switch (rate) |
| { |
| case RATE15_MIN: |
| return meter.getFifteenMinuteRate(); |
| case RATE5_MIN: |
| return meter.getFiveMinuteRate(); |
| case RATE1_MIN: |
| return meter.getOneMinuteRate(); |
| case RATE_MEAN: |
| return meter.getMeanRate(); |
| default: |
| throw new RuntimeException("Shouldn't happen"); |
| } |
| } |
| } |