Mercurial > hg4j

annotate src/org/tmatesoft/hg/internal/COWTransaction.java @ 701:02766745dbe6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added tag v1.2m2 for changeset 6e7786086f77
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Thu, 08 Aug 2013 21:05:21 +0200
parents dde18bc7053b
children
rev   line source
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
1 /*
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
2 * Copyright (c) 2013 TMate Software Ltd
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
3 *
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
4 * This program is free software; you can redistribute it and/or modify
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
5 * it under the terms of the GNU General Public License as published by
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
6 * the Free Software Foundation; version 2 of the License.
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
7 *
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
8 * This program is distributed in the hope that it will be useful,
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
11 * GNU General Public License for more details.
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
12 *
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
13 * For information on how to redistribute this software under
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
14 * the terms of a license other than GNU General Public License
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
15 * contact TMate Software at support@hg4j.com
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
16 */
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
17 package org.tmatesoft.hg.internal;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
18
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
19 import java.io.File;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
20 import java.io.IOException;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
21 import java.util.Iterator;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
22 import java.util.LinkedList;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
23 import java.util.List;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
24
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
25 import org.tmatesoft.hg.core.HgIOException;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
26 import org.tmatesoft.hg.core.SessionContext;
665
dde18bc7053b Test Copy-on-Write transactions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 654
diff changeset
27 import org.tmatesoft.hg.repo.HgInvalidStateException;
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
28
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
29 /**
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
30 * This transaction strategy makes a copy of original file and breaks origin hard links, if any.
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
31 * Changes are directed to actual repository files.
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
32 *
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
33 * On commit, remove all backup copies
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
34 * On rollback, move all backup files in place of original
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
35 *
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
36 * @author Artem Tikhomirov
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
37 * @author TMate Software Ltd.
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
38 */
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
39 public final class COWTransaction extends Transaction {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
40
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
41 private final FileUtils fileHelper;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
42 private final List<RollbackEntry> entries = new LinkedList<RollbackEntry>();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
43
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
44 public COWTransaction(SessionContext.Source ctxSource) {
654
12a4f60ea972 1) Console push tool. 2) Pass class to blame into FileUtils
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 635
diff changeset
45 fileHelper = new FileUtils(ctxSource.getSessionContext().getLog(), this);
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
46 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
47
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
48 @Override
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
49 public File prepare(File f) throws HgIOException {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
50 if (known(f)) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
51 return f;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
52 }
635
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
53 if (!f.exists()) {
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
54 return recordNonExistent(f);
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
55 }
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
56 final File parentDir = f.getParentFile();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
57 assert parentDir.canWrite();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
58 File copy = new File(parentDir, f.getName() + ".hg4j.copy");
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
59 fileHelper.copy(f, copy);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
60 final long lm = f.lastModified();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
61 copy.setLastModified(lm);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
62 File backup = new File(parentDir, f.getName() + ".hg4j.orig");
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
63 if (backup.exists()) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
64 backup.delete();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
65 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
66 if (!f.renameTo(backup)) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
67 throw new HgIOException(String.format("Failed to backup %s to %s", f.getName(), backup.getName()), backup);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
68 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
69 if (!copy.renameTo(f)) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
70 throw new HgIOException(String.format("Failed to bring on-write copy in place (%s to %s)", copy.getName(), f.getName()), copy);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
71 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
72 f.setLastModified(lm);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
73 record(f, backup);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
74 return f;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
75 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
76
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
77 @Override
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
78 public File prepare(File origin, File backup) throws HgIOException {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
79 if (known(origin)) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
80 return origin;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
81 }
635
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
82 if (!origin.exists()) {
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
83 return recordNonExistent(origin);
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
84 }
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
85 fileHelper.copy(origin, backup);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
86 final RollbackEntry e = record(origin, backup);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
87 e.keepBackup = true;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
88 return origin;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
89 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
90
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
91 @Override
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
92 public void done(File f) throws HgIOException {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
93 find(f).success = true;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
94 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
95
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
96 @Override
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
97 public void failure(File f, IOException ex) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
98 find(f).failure = ex;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
99 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
100
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
101 // XXX custom exception for commit and rollback to hold information about files rolled back
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
102
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
103 @Override
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
104 public void commit() throws HgIOException {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
105 for (Iterator<RollbackEntry> it = entries.iterator(); it.hasNext();) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
106 RollbackEntry e = it.next();
665
dde18bc7053b Test Copy-on-Write transactions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 654
diff changeset
107 if (!e.success) {
dde18bc7053b Test Copy-on-Write transactions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 654
diff changeset
108 throw new HgInvalidStateException(String.format("Attempt to commit transaction without successful clearance of file %s", e.origin));
dde18bc7053b Test Copy-on-Write transactions
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 654
diff changeset
109 }
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
110 if (e.failure != null) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
111 throw new HgIOException("Can't close transaction with a failure.", e.failure, e.origin);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
112 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
113 if (!e.keepBackup && e.backup != null) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
114 e.backup.delete();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
115 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
116 it.remove();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
117 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
118 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
119
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
120 @Override
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
121 public void rollback() throws HgIOException {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
122 LinkedList<RollbackEntry> success = new LinkedList<RollbackEntry>();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
123 for (Iterator<RollbackEntry> it = entries.iterator(); it.hasNext();) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
124 RollbackEntry e = it.next();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
125 e.origin.delete();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
126 if (e.backup != null) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
127 if (!e.backup.renameTo(e.origin)) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
128 String msg = String.format("Transaction rollback failed, could not rename backup %s back to %s", e.backup.getName(), e.origin.getName());
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
129 throw new HgIOException(msg, e.origin);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
130 }
621
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 617
diff changeset
131 // renameTo() doesn't update timestamp, while the rest of the code relies
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 617
diff changeset
132 // on file timestamp to detect revlog changes. Rollback *is* a change,
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 617
diff changeset
133 // even if it brings the old state.
99ad1e3a4e4d RevlogStream: be aware of existence (not HgDataFile), facilitate use of an added HgDataFile over a commit; Rollback: be more sensitive about file changes (file size is not enough: write/rollback leaves it intact); tests
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 617
diff changeset
134 e.origin.setLastModified(System.currentTimeMillis());
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
135 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
136 success.add(e);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
137 it.remove();
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
138 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
139 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
140
635
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
141 private File recordNonExistent(File f) throws HgIOException {
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
142 record(f, null);
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
143 try {
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
144 f.getParentFile().mkdirs();
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
145 f.createNewFile();
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
146 return f;
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
147 } catch (IOException ex) {
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
148 throw new HgIOException("Failed to create new file", ex, f);
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
149 }
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
150 }
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
151
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
152 private RollbackEntry record(File origin, File backup) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
153 final RollbackEntry e = new RollbackEntry(origin, backup);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
154 entries.add(e);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
155 return e;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
156 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
157
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
158 private boolean known(File f) {
635
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
159 RollbackEntry e = lookup(f);
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
160 return e != null;
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
161 }
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
162
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
163 private RollbackEntry find(File f) {
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
164 RollbackEntry e = lookup(f);
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
165 if (e != null) {
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
166 return e;
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
167 }
635
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
168 assert false;
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
169 return new RollbackEntry(f,f);
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
170 }
635
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
171
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
172 private RollbackEntry lookup(File f) {
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
173 for (RollbackEntry e : entries) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
174 if (e.origin.equals(f)) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
175 return e;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
176 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
177 }
635
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
178 return null;
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
179 }
635
4ec2d44e2bf3 Compound test scenario for checkout, add, remove, revert and commit
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 621
diff changeset
180
617
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
181 private static class RollbackEntry {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
182 public final File origin;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
183 public final File backup; // may be null to indicate file didn't exist
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
184 public boolean success = false;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
185 public IOException failure = null;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
186 public boolean keepBackup = false;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
187
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
188 public RollbackEntry(File o, File b) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
189 origin = o;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
190 backup = b;
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
191 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
192 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
193
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
194 public static class Factory implements Transaction.Factory {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
195
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
196 public Transaction create(SessionContext.Source ctxSource) {
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
197 return new COWTransaction(ctxSource);
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
198 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
199
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
200 }
65c01508f002 Rollback support for commands that modify repository. Strategy to keep complete copy of a file being changed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
201 }