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/*
* Copyright 2018, OpenCensus 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
*
* 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 io.opencensus.metrics;
import io.opencensus.common.ExperimentalApi;
import io.opencensus.metrics.export.MetricProducerManager;
import java.util.Collection;
/**
* A {@link Metric} producer that can be registered for exporting using {@link
* MetricProducerManager}.
*
* <p>All implementation MUST be thread-safe.
*
* @since 0.17
*/
@ExperimentalApi
public abstract class MetricProducer {
/**
* Returns a collection of produced {@link Metric}s to be exported.
*
* @return a collection of produced {@link Metric}s to be exported.
*/
public abstract Collection<Metric> getMetrics();
}
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