| /* |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| |
| package org.apache.hc.core5.http.protocol; |
| |
| import java.util.Map; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import org.apache.hc.core5.annotation.Contract; |
| import org.apache.hc.core5.annotation.ThreadingBehavior; |
| import org.apache.hc.core5.http.HttpVersion; |
| import org.apache.hc.core5.http.ProtocolVersion; |
| import org.apache.hc.core5.util.Args; |
| |
| /** |
| * Default implementation of {@link HttpContext}. |
| * <p> |
| * Please note instances of this class can be thread unsafe if the |
| * parent context is not thread safe. |
| * |
| * @since 4.0 |
| */ |
| @Contract(threading = ThreadingBehavior.SAFE_CONDITIONAL) |
| public class BasicHttpContext implements HttpContext { |
| |
| private final HttpContext parentContext; |
| private final Map<String, Object> map; |
| |
| private ProtocolVersion version; |
| |
| public BasicHttpContext() { |
| this(null); |
| } |
| |
| public BasicHttpContext(final HttpContext parentContext) { |
| super(); |
| this.map = new ConcurrentHashMap<>(); |
| this.parentContext = parentContext; |
| } |
| |
| @Override |
| public Object getAttribute(final String id) { |
| Args.notNull(id, "Id"); |
| Object obj = this.map.get(id); |
| if (obj == null && this.parentContext != null) { |
| obj = this.parentContext.getAttribute(id); |
| } |
| return obj; |
| } |
| |
| @Override |
| public Object setAttribute(final String id, final Object obj) { |
| Args.notNull(id, "Id"); |
| if (obj != null) { |
| return this.map.put(id, obj); |
| } |
| return this.map.remove(id); |
| } |
| |
| @Override |
| public Object removeAttribute(final String id) { |
| Args.notNull(id, "Id"); |
| return this.map.remove(id); |
| } |
| |
| /** |
| * @since 5.0 |
| */ |
| @Override |
| public ProtocolVersion getProtocolVersion() { |
| return this.version != null ? this.version : HttpVersion.DEFAULT; |
| } |
| |
| /** |
| * @since 5.0 |
| */ |
| @Override |
| public void setProtocolVersion(final ProtocolVersion version) { |
| this.version = version; |
| } |
| |
| /** |
| * @since 4.2 |
| */ |
| public void clear() { |
| this.map.clear(); |
| } |
| |
| @Override |
| public String toString() { |
| return this.map.toString(); |
| } |
| |
| } |