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SpectatorDistributionSummary.java
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SpectatorDistributionSummary.java
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/*
* Copyright 2017 VMware, Inc.
*
* 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
*
* https://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 io.micrometer.atlas;
import com.netflix.spectator.api.Measurement;
import com.netflix.spectator.api.Statistic;
import io.micrometer.core.instrument.AbstractDistributionSummary;
import io.micrometer.core.instrument.Clock;
import io.micrometer.core.instrument.distribution.DistributionStatisticConfig;
import io.micrometer.core.instrument.util.MeterEquivalence;
import io.micrometer.core.lang.Nullable;
import static java.util.stream.StreamSupport.stream;
public class SpectatorDistributionSummary extends AbstractDistributionSummary {
private final com.netflix.spectator.api.DistributionSummary summary;
SpectatorDistributionSummary(Id id,
com.netflix.spectator.api.DistributionSummary distributionSummary,
Clock clock,
DistributionStatisticConfig distributionStatisticConfig,
double scale) {
super(id, clock, distributionStatisticConfig, scale, false);
this.summary = distributionSummary;
}
/**
* @param amount Amount for an event being measured. For this implementation,
* amount is truncated to a long because the underlying Spectator
* implementation takes a long.
*/
@Override
protected void recordNonNegative(double amount) {
summary.record((long) amount);
}
@Override
public long count() {
return summary.count();
}
@Override
public double totalAmount() {
return summary.totalAmount();
}
@Override
public double max() {
for (Measurement measurement : summary.measure()) {
if (stream(measurement.id().tags().spliterator(), false)
.anyMatch(tag -> tag.key().equals("statistic") && tag.value().equals(Statistic.max.toString()))) {
return measurement.value();
}
}
return Double.NaN;
}
@SuppressWarnings("EqualsWhichDoesntCheckParameterClass")
@Override
public boolean equals(@Nullable Object o) {
return MeterEquivalence.equals(this, o);
}
@Override
public int hashCode() {
return MeterEquivalence.hashCode(this);
}
}