1 /*
2 * Copyright (C) 2015, Google Inc.
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43
44 package org.eclipse.jgit.transport;
45
46 import java.io.IOException;
47 import java.io.PipedInputStream;
48 import java.io.PipedOutputStream;
49
50 import org.eclipse.jgit.errors.TransportException;
51 import org.eclipse.jgit.internal.JGitText;
52 import org.eclipse.jgit.lib.Repository;
53 import org.eclipse.jgit.transport.resolver.ServiceNotAuthorizedException;
54 import org.eclipse.jgit.transport.resolver.ServiceNotEnabledException;
55 import org.eclipse.jgit.transport.resolver.UploadPackFactory;
56
57 class InternalFetchConnection<C> extends BasePackFetchConnection {
58 private Thread worker;
59
60 /**
61 * Constructor for InternalFetchConnection.
62 *
63 * @param transport
64 * a {@link org.eclipse.jgit.transport.PackTransport}
65 * @param uploadPackFactory
66 * a
67 * {@link org.eclipse.jgit.transport.resolver.UploadPackFactory}
68 * @param req
69 * request
70 * @param remote
71 * the remote {@link org.eclipse.jgit.lib.Repository}
72 * @throws org.eclipse.jgit.errors.TransportException
73 * if any.
74 */
75 public InternalFetchConnection(PackTransport transport,
76 final UploadPackFactory<C> uploadPackFactory,
77 final C req, final Repository remote) throws TransportException {
78 super(transport);
79
80 final PipedInputStream in_r;
81 final PipedOutputStream in_w;
82
83 final PipedInputStream out_r;
84 final PipedOutputStream out_w;
85 try {
86 in_r = new PipedInputStream();
87 in_w = new PipedOutputStream(in_r);
88
89 out_r = new PipedInputStream() {
90 // The client (BasePackFetchConnection) can write
91 // a huge burst before it reads again. We need to
92 // force the buffer to be big enough, otherwise it
93 // will deadlock both threads.
94 {
95 buffer = new byte[MIN_CLIENT_BUFFER];
96 }
97 };
98 out_w = new PipedOutputStream(out_r);
99 } catch (IOException err) {
100 remote.close();
101 throw new TransportException(uri, JGitText.get().cannotConnectPipes, err);
102 }
103
104 worker = new Thread("JGit-Upload-Pack") { //$NON-NLS-1$
105 @Override
106 public void run() {
107 try {
108 final UploadPack rp = uploadPackFactory.create(req, remote);
109 rp.upload(out_r, in_w, null);
110 } catch (ServiceNotEnabledException e) {
111 // Ignored. Client cannot use this repository.
112 } catch (ServiceNotAuthorizedException e) {
113 // Ignored. Client cannot use this repository.
114 } catch (IOException err) {
115 // Client side of the pipes should report the problem.
116 err.printStackTrace();
117 } catch (RuntimeException err) {
118 // Client side will notice we went away, and report.
119 err.printStackTrace();
120 } finally {
121 try {
122 out_r.close();
123 } catch (IOException e2) {
124 // Ignore close failure, we probably crashed above.
125 }
126
127 try {
128 in_w.close();
129 } catch (IOException e2) {
130 // Ignore close failure, we probably crashed above.
131 }
132
133 remote.close();
134 }
135 }
136 };
137 worker.start();
138
139 init(in_r, out_w);
140 readAdvertisedRefs();
141 }
142
143 /** {@inheritDoc} */
144 @Override
145 public void close() {
146 super.close();
147
148 try {
149 if (worker != null) {
150 worker.join();
151 }
152 } catch (InterruptedException ie) {
153 // Stop waiting and return anyway.
154 } finally {
155 worker = null;
156 }
157 }
158 }