/*
* 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 gobblin.metrics.metric.filter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.codahale.metrics.Metric;
import com.codahale.metrics.MetricFilter;
/**
* Implementation of {@link MetricFilter} that takes in a regex, and {@link #matches(String, Metric)} a {@link Metric}
* if the name of the {@link Metric} matches the regex.
*/
public class MetricNameRegexFilter implements MetricFilter {
private final Pattern regex;
private final Matcher matcher;
public MetricNameRegexFilter(String regex) {
this.regex = Pattern.compile(regex);
this.matcher = this.regex.matcher("");
}
@Override
public boolean matches(String name, Metric metric) {
return this.matcher.reset(name).matches();
}
}