/*
* 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.flink.metrics;
import org.apache.beam.runners.core.metrics.MetricsContainerStepMap;
import org.apache.flink.api.common.accumulators.Accumulator;
import org.apache.flink.api.common.accumulators.SimpleAccumulator;
/**
* Accumulator of {@link MetricsContainerStepMap}.
*/
public class MetricsAccumulator implements SimpleAccumulator<MetricsContainerStepMap> {
private MetricsContainerStepMap metricsContainers = new MetricsContainerStepMap();
@Override
public void add(MetricsContainerStepMap value) {
metricsContainers.updateAll(value);
}
@Override
public MetricsContainerStepMap getLocalValue() {
return metricsContainers;
}
@Override
public void resetLocal() {
this.metricsContainers = new MetricsContainerStepMap();
}
@Override
public void merge(Accumulator<MetricsContainerStepMap, MetricsContainerStepMap> other) {
this.add(other.getLocalValue());
}
@Override
public Accumulator<MetricsContainerStepMap, MetricsContainerStepMap> clone() {
try {
super.clone();
} catch (CloneNotSupportedException ignored) {
}
MetricsAccumulator metricsAccumulator = new MetricsAccumulator();
metricsAccumulator.getLocalValue().updateAll(this.getLocalValue());
return metricsAccumulator;
}
}