io.micrometer.tracing.brave.sampler.RateLimitingSampler Maven / Gradle / Ivy
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/**
* Copyright 2022 the original author or authors.
*
* 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.tracing.brave.sampler;
import java.util.function.Supplier;
import brave.sampler.Sampler;
/**
* The rate-limited sampler allows you to choose an amount of traces to accept on a
* per-second interval. The minimum number is 0 and the max is 2,147,483,647 (max int).
*
* You can read more about it in {@link brave.sampler.RateLimitingSampler}
*
* @author Marcin Grzejszczak
* @since 1.0.0
*/
public class RateLimitingSampler extends Sampler {
private final Sampler sampler;
/**
* Creates a new instance of {@link RateLimitingSampler}.
* @param rate supplier of rate
*/
public RateLimitingSampler(Supplier rate) {
this.sampler = brave.sampler.RateLimitingSampler.create(rateLimit(rate));
}
private Integer rateLimit(Supplier rate) {
return rate.get() != null ? rate.get() : 0;
}
@Override
public boolean isSampled(long traceId) {
return this.sampler.isSampled(traceId);
}
}