geronimo-opentracing-spec/src/main/java/io/opentracing/propagation/Format.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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 io.opentracing.propagation;

import java.nio.ByteBuffer;

/**
 * Tracer interaction abstraction.
 */
public interface Format<C> {

    final class Builtin<C> implements Format<C> {

        public final static Format<TextMap> TEXT_MAP = new Builtin<TextMap>("TEXT_MAP");

        public final static Format<TextMap> HTTP_HEADERS = new Builtin<TextMap>("HTTP_HEADERS");

        public final static Format<ByteBuffer> BINARY = new Builtin<ByteBuffer>("BINARY");

        private final String name;

        private Builtin(final String name) {
            this.name = name;
        }

        @Override
        public String toString() {
            return Builtin.class.getSimpleName() + "." + name;
        }
    }
}