org.springframework.cloud.sleuth.SpanNamer Maven / Gradle / Ivy
/*
* Copyright 2013-2021 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.cloud.sleuth;
/**
* Describes how for a given object a span should be named. In the vast majority of cases
* a name should be provided explicitly. In case of instrumentation where the name has to
* be resolved at runtime this interface will provide the name of the span.
*
* @author Marcin Grzejszczak
* @since 1.0.0
*/
public interface SpanNamer {
/**
* Retrieves the span name for the given object.
* @param object - object for which span name should be picked
* @param defaultValue - the default valued to be returned if span name can't be
* calculated
* @return span name
*/
String name(Object object, String defaultValue);
}