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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  
28  package org.apache.http.impl.nio.codecs;
29  
30  import org.apache.http.HttpException;
31  import org.apache.http.HttpRequest;
32  import org.apache.http.HttpRequestFactory;
33  import org.apache.http.ParseException;
34  import org.apache.http.RequestLine;
35  import org.apache.http.config.MessageConstraints;
36  import org.apache.http.impl.DefaultHttpRequestFactory;
37  import org.apache.http.message.LineParser;
38  import org.apache.http.message.ParserCursor;
39  import org.apache.http.nio.reactor.SessionInputBuffer;
40  import org.apache.http.params.HttpParams;
41  import org.apache.http.util.Args;
42  import org.apache.http.util.CharArrayBuffer;
43  
44  /**
45   * Default {@link org.apache.http.nio.NHttpMessageParser} implementation
46   * for {@link HttpRequest}s.
47   *
48   * @since 4.1
49   */
50  @SuppressWarnings("deprecation")
51  public class DefaultHttpRequestParser extends AbstractMessageParser<HttpRequest> {
52  
53      private final HttpRequestFactory requestFactory;
54  
55      /**
56       * Creates an instance of this class.
57       *
58       * @param buffer the session input buffer.
59       * @param parser the line parser.
60       * @param params HTTP parameters.
61       *
62       * @deprecated (4.3) use
63       *   {@link DefaultHttpRequestParser#DefaultHttpRequestParser(
64       *   SessionInputBuffer, LineParser, HttpRequestFactory, MessageConstraints)}
65       */
66      @Deprecated
67      public DefaultHttpRequestParser(
68              final SessionInputBuffer buffer,
69              final LineParser parser,
70              final HttpRequestFactory requestFactory,
71              final HttpParams params) {
72          super(buffer, parser, params);
73          Args.notNull(requestFactory, "Request factory");
74          this.requestFactory = requestFactory;
75      }
76  
77      /**
78       * Creates an instance of DefaultHttpRequestParser.
79       *
80       * @param buffer the session input buffer.
81       * @param parser the line parser. If {@code null}
82       *   {@link org.apache.http.message.BasicLineParser#INSTANCE} will be used.
83       * @param requestFactory the request factory. If {@code null}
84       *   {@link DefaultHttpRequestFactory#INSTANCE} will be used.
85       * @param constraints Message constraints. If {@code null}
86       *   {@link MessageConstraints#DEFAULT} will be used.
87       *
88       * @since 4.3
89       */
90      public DefaultHttpRequestParser(
91              final SessionInputBuffer buffer,
92              final LineParser parser,
93              final HttpRequestFactory requestFactory,
94              final MessageConstraints constraints) {
95          super(buffer, parser, constraints);
96          this.requestFactory = requestFactory != null ? requestFactory : DefaultHttpRequestFactory.INSTANCE;
97      }
98  
99      /**
100     * @since 4.3
101     */
102     public DefaultHttpRequestParser(final SessionInputBuffer buffer, final MessageConstraints constraints) {
103         this(buffer, null, null, constraints);
104     }
105 
106     /**
107     * @since 4.3
108     */
109     public DefaultHttpRequestParser(final SessionInputBuffer buffer) {
110         this(buffer, null);
111     }
112 
113     @Override
114     protected HttpRequest createMessage(final CharArrayBuffer buffer)
115             throws HttpException, ParseException {
116         final ParserCursor cursor = new ParserCursor(0, buffer.length());
117         final RequestLine requestLine = lineParser.parseRequestLine(buffer, cursor);
118         return this.requestFactory.newHttpRequest(requestLine);
119     }
120 
121 }