| /* |
| * 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.export; |
| |
| import io.opencensus.common.ExperimentalApi; |
| 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. |
| * @since 0.17 |
| */ |
| public abstract Collection<Metric> getMetrics(); |
| } |