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 public InternalFetchConnection(PackTransport transport,
61 final UploadPackFactory<C> uploadPackFactory,
62 final C req, final Repository remote) throws TransportException {
63 super(transport);
64
65 final PipedInputStream in_r;
66 final PipedOutputStream in_w;
67
68 final PipedInputStream out_r;
69 final PipedOutputStream out_w;
70 try {
71 in_r = new PipedInputStream();
72 in_w = new PipedOutputStream(in_r);
73
74 out_r = new PipedInputStream() {
75 // The client (BasePackFetchConnection) can write
76 // a huge burst before it reads again. We need to
77 // force the buffer to be big enough, otherwise it
78 // will deadlock both threads.
79 {
80 buffer = new byte[MIN_CLIENT_BUFFER];
81 }
82 };
83 out_w = new PipedOutputStream(out_r);
84 } catch (IOException err) {
85 remote.close();
86 throw new TransportException(uri, JGitText.get().cannotConnectPipes, err);
87 }
88
89 worker = new Thread("JGit-Upload-Pack") { //$NON-NLS-1$
90 @Override
91 public void run() {
92 try {
93 final UploadPack rp = uploadPackFactory.create(req, remote);
94 rp.upload(out_r, in_w, null);
95 } catch (ServiceNotEnabledException e) {
96 // Ignored. Client cannot use this repository.
97 } catch (ServiceNotAuthorizedException e) {
98 // Ignored. Client cannot use this repository.
99 } catch (IOException err) {
100 // Client side of the pipes should report the problem.
101 err.printStackTrace();
102 } catch (RuntimeException err) {
103 // Client side will notice we went away, and report.
104 err.printStackTrace();
105 } finally {
106 try {
107 out_r.close();
108 } catch (IOException e2) {
109 // Ignore close failure, we probably crashed above.
110 }
111
112 try {
113 in_w.close();
114 } catch (IOException e2) {
115 // Ignore close failure, we probably crashed above.
116 }
117
118 remote.close();
119 }
120 }
121 };
122 worker.start();
123
124 init(in_r, out_w);
125 readAdvertisedRefs();
126 }
127
128 @Override
129 public void close() {
130 super.close();
131
132 try {
133 if (worker != null) {
134 worker.join();
135 }
136 } catch (InterruptedException ie) {
137 // Stop waiting and return anyway.
138 } finally {
139 worker = null;
140 }
141 }
142 }