co.elastic.apm.agent.tracer.configuration.ListValueConverter Maven / Gradle / Ivy
/*
* Licensed to Elasticsearch B.V. under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch B.V. 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 co.elastic.apm.agent.tracer.configuration;
import org.stagemonitor.configuration.converter.AbstractCollectionValueConverter;
import org.stagemonitor.configuration.converter.ValueConverter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class ListValueConverter extends AbstractCollectionValueConverter, T> {
/**
* Specialized delimiter supporting split by comma which is not enclosed in brackets.
*/
public static final String COMMA_OUT_OF_BRACKETS = ",(?![^()]*\\))";
protected final String delimiter;
public ListValueConverter(ValueConverter valueConverter) {
super(valueConverter);
this.delimiter = ",";
}
public ListValueConverter(ValueConverter valueConverter, String delimiter) {
super(valueConverter);
this.delimiter = delimiter;
}
public List convert(String s) {
if (s != null && s.length() > 0) {
final ArrayList result = new ArrayList<>();
for (String split : s.split(delimiter)) {
result.add(valueConverter.convert(split.trim()));
}
return Collections.unmodifiableList(result);
}
return Collections.emptyList();
}
}