org.apache.flink.runtime.metrics.groups.GenericKeyMetricGroup 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
* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.metrics.groups;
import org.apache.flink.annotation.Internal;
import org.apache.flink.metrics.MetricGroup;
import org.apache.flink.runtime.metrics.MetricRegistry;
/**
* A {@link GenericMetricGroup} for representing the key part of a key-value metric group pair.
*
* @see GenericValueMetricGroup
* @see MetricGroup#addGroup(String, String)
*/
@Internal
public class GenericKeyMetricGroup extends GenericMetricGroup {
GenericKeyMetricGroup(MetricRegistry registry, AbstractMetricGroup parent, String name) {
super(registry, parent, name);
}
@Override
public MetricGroup addGroup(String key, String value) {
return addGroup(key).addGroup(value);
}
@Override
protected GenericMetricGroup createChildGroup(String name, ChildType childType) {
switch (childType) {
case VALUE:
return new GenericValueMetricGroup(registry, this, name);
default:
return new GenericMetricGroup(registry, this, name);
}
}
}