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TraceContextHandler.java
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TraceContextHandler.java
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/*
* Copyright (c) 2017-2018 eBay Inc.
*
* 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
*
* 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 com.ebay.opentracing.basic;
import java.util.List;
import java.util.Map;
/**
* Interface used to encapsulate required interactions with a provider of trace context objects.
*/
public interface TraceContextHandler<T> {
/**
* Create a new span context which is not associated with any other spans. i.e., a new root/initial span.
*
* @return span context
*/
InternalSpanContext<T> createNew();
/**
* Create a new span context given the span's configured references. This would typically look for
* child-of or follows-from relationships and create a new span context configured with the same
* trace ID but a new/unique span ID.
*
* @param references reference map
* @return span context
*/
InternalSpanContext<T> createForContext(Map<String, List<InternalSpanContext<T>>> references);
}