org.apache.flink.runtime.metrics.groups.OperatorMetricGroup Maven / Gradle / Ivy
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* 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
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* 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,
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* limitations under the License.
*/
package org.apache.flink.runtime.metrics.groups;
import org.apache.flink.runtime.metrics.MetricRegistry;
import org.apache.flink.runtime.metrics.scope.OperatorScopeFormat;
import java.util.Collections;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* Special {@link org.apache.flink.metrics.MetricGroup} representing an Operator.
*/
public class OperatorMetricGroup extends ComponentMetricGroup {
/** The task metric group that contains this operator metric groups */
private final TaskMetricGroup parent;
public OperatorMetricGroup(MetricRegistry registry, TaskMetricGroup parent, String operatorName) {
this(registry, parent, registry.getScopeFormats().getOperatorFormat(), operatorName);
}
public OperatorMetricGroup(
MetricRegistry registry,
TaskMetricGroup parent,
OperatorScopeFormat scopeFormat,
String operatorName) {
super(registry, scopeFormat.formatScope(parent, operatorName));
this.parent = checkNotNull(parent);
}
// ------------------------------------------------------------------------
public final TaskMetricGroup parent() {
return parent;
}
// ------------------------------------------------------------------------
// Component Metric Group Specifics
// ------------------------------------------------------------------------
@Override
protected Iterable subComponents() {
return Collections.emptyList();
}
}