org.apache.flink.runtime.metrics.groups.GenericMetricGroup Maven / Gradle / Ivy
/*
* 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.flink.runtime.metrics.groups;
import org.apache.flink.annotation.Internal;
import org.apache.flink.metrics.CharacterFilter;
import org.apache.flink.runtime.metrics.MetricRegistry;
import org.apache.flink.runtime.metrics.dump.QueryScopeInfo;
/**
* A simple named {@link org.apache.flink.metrics.MetricGroup} that is used to hold
* subgroups of metrics.
*/
@Internal
public class GenericMetricGroup extends AbstractMetricGroup> {
/** The name of this group. */
private String name;
public GenericMetricGroup(MetricRegistry registry, AbstractMetricGroup parent, String name) {
super(registry, makeScopeComponents(parent, name), parent);
this.name = name;
}
@Override
protected QueryScopeInfo createQueryServiceMetricInfo(CharacterFilter filter) {
return parent.getQueryServiceMetricInfo(filter).copy(filter.filterCharacters(this.name));
}
// ------------------------------------------------------------------------
private static String[] makeScopeComponents(AbstractMetricGroup parent, String name) {
if (parent != null) {
String[] parentComponents = parent.getScopeComponents();
if (parentComponents != null && parentComponents.length > 0) {
String[] parts = new String[parentComponents.length + 1];
System.arraycopy(parentComponents, 0, parts, 0, parentComponents.length);
parts[parts.length - 1] = name;
return parts;
}
}
return new String[] { name };
}
@Override
protected String getGroupName(CharacterFilter filter) {
return filter.filterCharacters(name);
}
}