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Add the Distribution data type for instrumentation

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This is one of a series of CLs adding a new metric type, EventMetric, which
is used for tracking numerical distributions.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=132103552
This commit is contained in:
shikhman 2016-09-02 14:23:08 -07:00 • committed by Ben McIlwain
parent 180240ae04
commit dcb189943b
13 changed files with 961 additions and 0 deletions
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53
java/google/registry/monitoring/metrics/CustomFitter.java Normal file
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// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
//
// 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 google.registry.monitoring.metrics;
import static com.google.common.base.Preconditions.checkArgument;
import static google.registry.monitoring.metrics.MetricsUtils.checkDouble;
import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSortedSet;
import com.google.common.collect.Ordering;
/**
* Models a {@link DistributionFitter} with arbitrary sized intervals.
*
* <p>If only only one boundary is provided, then the fitter will consist of an overflow and
* underflow interval separated by that boundary.
*/
@AutoValue
public abstract class CustomFitter implements DistributionFitter {
/**
* Create a new {@link CustomFitter} with the given interval boundaries.
*
* @param boundaries is a sorted list of interval boundaries
* @throws IllegalArgumentException if {@code boundaries} is empty or not sorted in ascending
* order, or if a value in the set is infinite, {@code NaN}, or {@code -0.0}.
*/
public static CustomFitter create(ImmutableSet<Double> boundaries) {
checkArgument(boundaries.size() > 0, "boundaries must not be empty");
checkArgument(Ordering.natural().isOrdered(boundaries), "boundaries must be sorted");
for (Double d : boundaries) {
checkDouble(d);
}
return new AutoValue_CustomFitter(ImmutableSortedSet.copyOf(boundaries));
}
@Override
public abstract ImmutableSortedSet<Double> boundaries();
}