| /* |
| * 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.spark.structuredstreaming.metrics; |
| |
| import org.apache.beam.runners.core.metrics.MetricsContainerStepMap; |
| import org.apache.spark.util.AccumulatorV2; |
| |
| /** {@link AccumulatorV2} implementation for {@link MetricsContainerStepMap}. */ |
| public class MetricsContainerStepMapAccumulator |
| extends AccumulatorV2<MetricsContainerStepMap, MetricsContainerStepMap> { |
| private static final MetricsContainerStepMap empty = new MetricsContainerStepMap(); |
| |
| private MetricsContainerStepMap value; |
| |
| public MetricsContainerStepMapAccumulator(MetricsContainerStepMap value) { |
| this.value = value; |
| } |
| |
| @Override |
| public boolean isZero() { |
| return value.equals(empty); |
| } |
| |
| @Override |
| public MetricsContainerStepMapAccumulator copy() { |
| MetricsContainerStepMap newContainer = new MetricsContainerStepMap(); |
| newContainer.updateAll(value); |
| return new MetricsContainerStepMapAccumulator(newContainer); |
| } |
| |
| @Override |
| public void reset() { |
| this.value = new MetricsContainerStepMap(); |
| } |
| |
| @Override |
| public void add(MetricsContainerStepMap other) { |
| this.value.updateAll(other); |
| } |
| |
| @Override |
| public void merge(AccumulatorV2<MetricsContainerStepMap, MetricsContainerStepMap> other) { |
| this.value.updateAll(other.value()); |
| } |
| |
| @Override |
| public MetricsContainerStepMap value() { |
| return this.value; |
| } |
| } |