| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.beam.runners.core.metrics; |
| |
| import com.google.auto.value.AutoValue; |
| import java.io.Serializable; |
| import java.util.Collections; |
| import org.apache.beam.sdk.annotations.Experimental; |
| import org.apache.beam.sdk.annotations.Experimental.Kind; |
| import org.apache.beam.sdk.metrics.MetricKey; |
| import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Iterables; |
| |
| /** Representation of multiple metric updates. */ |
| @Experimental(Kind.METRICS) |
| @AutoValue |
| public abstract class MetricUpdates { |
| |
| public static final MetricUpdates EMPTY = |
| MetricUpdates.create( |
| Collections.emptyList(), Collections.emptyList(), Collections.emptyList()); |
| |
| /** |
| * Representation of a single metric update. |
| * |
| * @param <T> The type of value representing the update. |
| */ |
| @AutoValue |
| public abstract static class MetricUpdate<T> implements Serializable { |
| |
| /** The key being updated. */ |
| public abstract MetricKey getKey(); |
| /** The value of the update. */ |
| public abstract T getUpdate(); |
| |
| public static <T> MetricUpdate<T> create(MetricKey key, T update) { |
| return new AutoValue_MetricUpdates_MetricUpdate(key, update); |
| } |
| } |
| |
| /** Returns true if there are no updates in this MetricUpdates object. */ |
| public boolean isEmpty() { |
| return Iterables.isEmpty(counterUpdates()) && Iterables.isEmpty(distributionUpdates()); |
| } |
| |
| /** All of the counter updates. */ |
| public abstract Iterable<MetricUpdate<Long>> counterUpdates(); |
| |
| /** All of the distribution updates. */ |
| public abstract Iterable<MetricUpdate<DistributionData>> distributionUpdates(); |
| |
| /** All of the gauges updates. */ |
| public abstract Iterable<MetricUpdate<GaugeData>> gaugeUpdates(); |
| |
| /** Create a new {@link MetricUpdates} bundle. */ |
| public static MetricUpdates create( |
| Iterable<MetricUpdate<Long>> counterUpdates, |
| Iterable<MetricUpdate<DistributionData>> distributionUpdates, |
| Iterable<MetricUpdate<GaugeData>> gaugeUpdates) { |
| return new AutoValue_MetricUpdates(counterUpdates, distributionUpdates, gaugeUpdates); |
| } |
| } |