| /* |
| * 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.geronimo.microprofile.opentracing.impl; |
| |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import javax.ws.rs.core.MultivaluedMap; |
| |
| import io.opentracing.propagation.TextMap; |
| |
| public class HeaderTextMap<T> implements TextMap { |
| |
| private final MultivaluedMap<String, T> headers; |
| |
| public HeaderTextMap(final MultivaluedMap<String, T> headers) { |
| this.headers = headers; |
| } |
| |
| public MultivaluedMap<String, ?> getMap() { |
| return headers; |
| } |
| |
| @Override |
| public Iterator<Map.Entry<String, String>> iterator() { |
| final Iterator<String> iterator = headers.keySet().iterator(); |
| return new Iterator<Map.Entry<String, String>>() { |
| |
| @Override |
| public boolean hasNext() { |
| return iterator.hasNext(); |
| } |
| |
| @Override |
| public Map.Entry<String, String> next() { |
| final String next = iterator.next(); |
| return new Map.Entry<String, String>() { |
| |
| @Override |
| public String getKey() { |
| return next; |
| } |
| |
| @Override |
| public String getValue() { |
| return String.valueOf(headers.getFirst(next)); |
| } |
| |
| @Override |
| public String setValue(final String value) { |
| throw new UnsupportedOperationException(); |
| } |
| }; |
| } |
| }; |
| } |
| |
| @Override |
| public void put(final String key, final String value) { |
| this.headers.putSingle(key, (T) value); |
| } |
| } |