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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.client;
29  
30  import org.apache.http.annotation.Immutable;
31  import org.apache.http.conn.HttpClientConnectionManager;
32  import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
33  
34  /**
35   * Factory methods for {@link CloseableHttpClient} instances.
36   * @since 4.3
37   */
38  @Immutable
39  public class HttpClients {
40  
41      private HttpClients() {
42          super();
43      }
44  
45      /**
46       * Creates builder object for construction of custom
47       * {@link CloseableHttpClient} instances.
48       */
49      public static HttpClientBuilder custom() {
50          return HttpClientBuilder.create();
51      }
52  
53      /**
54       * Creates {@link CloseableHttpClient} instance with default
55       * configuration.
56       */
57      public static CloseableHttpClient createDefault() {
58          return HttpClientBuilder.create().build();
59      }
60  
61      /**
62       * Creates {@link CloseableHttpClient} instance with default
63       * configuration based on ssytem properties.
64       */
65      public static CloseableHttpClient createSystem() {
66          return HttpClientBuilder.create().useSystemProperties().build();
67      }
68  
69      /**
70       * Creates {@link CloseableHttpClient} instance that implements
71       * the most basic HTTP protocol support.
72       */
73      public static CloseableHttpClient createMinimal() {
74          return new MinimalHttpClient(new PoolingHttpClientConnectionManager());
75      }
76  
77      /**
78       * Creates {@link CloseableHttpClient} instance that implements
79       * the most basic HTTP protocol support.
80       */
81      public static CloseableHttpClient createMinimal(final HttpClientConnectionManager connManager) {
82          return new MinimalHttpClient(connManager);
83      }
84  
85  }