io.opentracing.contrib.elasticsearch.common.HttpTextMapInjectAdapter.java Source code

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Here is the source code for io.opentracing.contrib.elasticsearch.common.HttpTextMapInjectAdapter.java

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/*
 * Copyright 2017-2018 The OpenTracing 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
 *
 * 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.contrib.elasticsearch.common;

import io.opentracing.propagation.TextMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.http.HttpRequest;

public class HttpTextMapInjectAdapter implements TextMap {

    private final HttpRequest httpRequest;

    public HttpTextMapInjectAdapter(HttpRequest request) {
        this.httpRequest = request;
    }

    @Override
    public Iterator<Map.Entry<String, String>> iterator() {
        throw new UnsupportedOperationException("iterator should never be used with Tracer.inject()");
    }

    @Override
    public void put(String key, String value) {
        httpRequest.addHeader(key, value);
    }
}