/*
 * 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 org.apache.camel.opentracing.propagation;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import io.opentracing.propagation.TextMap;

public final class CamelMessagingHeadersExtractAdapter implements TextMap {

    private final Map<String, String> map = new HashMap<>();
    private final boolean jmsEncoding;

    public CamelMessagingHeadersExtractAdapter(final Map<String, Object> map, boolean jmsEncoding) {
        // Extract string valued map entries
        this.jmsEncoding = jmsEncoding;
        map.entrySet().stream().filter(e -> e.getValue() instanceof String).forEach(e -> this.map.put(decodeDash(e.getKey()), (String)e.getValue()));
    }

    @Override
    public Iterator<Map.Entry<String, String>> iterator() {
        return map.entrySet().iterator();
    }

    @Override
    public void put(String key, String value) {
        throw new UnsupportedOperationException("CamelMessagingHeadersExtractAdapter should only be used with Tracer.extract()");
    }

    /**
     * Decode dashes (encoded in {@link CamelMessagingHeadersInjectAdapter} Dash
     * encoding and decoding is required by JMS. This is implemented here rather
     * than specifically to JMS so that other Camel messaging endpoints can take
     * part in traces where the peer is using JMS.
     * 
     */
    private String decodeDash(String key) {
        if (jmsEncoding) {
            return key.replace(CamelMessagingHeadersInjectAdapter.JMS_DASH, "-");
        } else {
            return key;
        }
    }
}

@@ -847,16 +847,58 @@
 ation;%0A%0A
+import java.nio.charset.StandardCharsets;%0A
 import j
@@ -1451,22 +1451,257 @@
 ring
-).forEach(e -%3E
+ %7C%7C e.getValue() instanceof byte%5B%5D).forEach(e -%3E %7B%0A            if (e.getValue() instanceof byte%5B%5D) %7B%0A                this.map.put(decodeDash(e.getKey()), new String((byte%5B%5D)e.getValue(), StandardCharsets.UTF_8));%0A            %7D else %7B%0A               
  thi
@@ -1755,16 +1755,41 @@
 Value())
+;%0A            %7D%0A        %7D
 );%0A    %7D

Convert []byte header to string (#3994)