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Facade over tracing concepts

There is a newer version: 1.4.0

/**
 * Copyright 2022 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 io.micrometer.tracing.http;

import io.micrometer.observation.transport.Kind;

import java.util.Collection;

/**
 * This API is taken from OpenZipkin Brave.
 * 
 * Abstract request type used for parsing and sampling.
 *
 * @author OpenZipkin Brave Authors
 * @author Marcin Grzejszczak
 * @since 1.10.0
 * @deprecated scheduled for removal in 1.4.0
 */
@Deprecated
public interface Request {

    /**
     * Returns the header names.
     * @return collection of header names
     */
    Collection headerNames();

    /**
     * Returns the transport kind.
     * @return the remote kind describing the direction and type of the request
     */
    Kind kind();

    /**
     * Returns the underlying request object.
     * @return the underlying request object or {@code null} if there is none
     */
    Object unwrap();

}