package org.skywalking.apm.collector.worker.tools;
import java.util.Map;
/**
* @author pengys5
*/
public enum ParameterTools {
INSTANCE;
public String toString(Map<String, String[]> request, String key) {
if (request.get(key) != null) {
return request.get(key)[0];
} else {
return "";
}
}
}