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1   /*
2    * Copyright (C) 2012, Google Inc.
3    * and other copyright owners as documented in the project's IP log.
4    * * This program and the accompanying materials are made available
5    * under the terms of the Eclipse Distribution License v1.0 which
6    * accompanies this distribution, is reproduced below, and is
7    * available at http://www.eclipse.org/org/documents/edl-v10.php
8    *
9    * All rights reserved.
10   *
11   * Redistribution and use in source and binary forms, with or
12   * without modification, are permitted provided that the following
13   * conditions are met:
14   *
15   * - Redistributions of source code must retain the above copyright
16   *   notice, this list of conditions and the following disclaimer.
17   *
18   * - Redistributions in binary form must reproduce the above
19   *   copyright notice, this list of conditions and the following
20   *   disclaimer in the documentation and/or other materials provided
21   *   with the distribution.
22   *
23   * - Neither the name of the Eclipse Foundation, Inc. nor the
24   *   names of its contributors may be used to endorse or promote
25   *   products derived from this software without specific prior
26   *   written permission.
27   *
28   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
29   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
30   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
33   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
36   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
37   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
38   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
40   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41   */
42  
43  package org.eclipse.jgit.transport;
44  
45  import java.io.IOException;
46  
47  /**
48   * Hook to allow callers to take over advertising refs to the client.
49   *
50   * @since 2.0
51   */
52  public interface AdvertiseRefsHook {
53  	/**
54  	 * A simple hook that advertises the default refs.
55  	 * <p>
56  	 * The method implementations do nothing to preserve the default behavior;
57  	 * see {@link UploadPack#setAdvertisedRefs(java.util.Map)} and
58  	 * {@link ReceivePack#setAdvertisedRefs(java.util.Map,java.util.Set)}.
59  	 */
60  	AdvertiseRefsHook DEFAULT = new AdvertiseRefsHook() {
61  		@Override
62  		public void advertiseRefs(UploadPack uploadPack) {
63  			// Do nothing.
64  		}
65  
66  		@Override
67  		public void advertiseRefs(ReceivePack receivePack) {
68  			// Do nothing.
69  		}
70  	};
71  
72  	/**
73  	 * Advertise refs for upload-pack.
74  	 *
75  	 * @param uploadPack
76  	 *            instance on which to call
77  	 *            {@link org.eclipse.jgit.transport.UploadPack#setAdvertisedRefs(java.util.Map)}
78  	 *            if necessary.
79  	 * @throws org.eclipse.jgit.transport.ServiceMayNotContinueException
80  	 *             abort; the message will be sent to the user.
81  	 */
82  	void advertiseRefs(UploadPack uploadPack)
83  			throws ServiceMayNotContinueException;
84  
85  	/**
86  	 * Advertise refs for receive-pack.
87  	 *
88  	 * @param receivePack
89  	 *            instance on which to call
90  	 *            {@link org.eclipse.jgit.transport.ReceivePack#setAdvertisedRefs(java.util.Map,java.util.Set)}
91  	 *            if necessary.
92  	 * @throws org.eclipse.jgit.transport.ServiceMayNotContinueException
93  	 *             abort; the message will be sent to the user.
94  	 * @throws IOException
95  	 * @since 5.6
96  	 */
97  	void advertiseRefs(ReceivePack receivePack)
98  			throws ServiceMayNotContinueException, IOException;
99  }