Mercurial > hg4j

annotate src/org/tmatesoft/hg/core/HgCloneCommand.java @ 608:e1b29756f901

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Clean, organize and resolve some TODOs and FIXMEs: minor refactorings and comments
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 07 May 2013 21:27:51 +0200
parents e4ee4bf4c7d0
children 5e0313485eef
rev   line source
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1 /*
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2 * Copyright (c) 2011-2013 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.core;
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19 import static org.tmatesoft.hg.core.Nodeid.NULL;
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20 import static org.tmatesoft.hg.internal.RequiresFile.*;
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21 import static org.tmatesoft.hg.internal.RevlogStreamWriter.preferCompleteOverPatch;
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22 import static org.tmatesoft.hg.internal.RevlogStreamWriter.preferCompressedOverComplete;
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23
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24 import java.io.File;
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25 import java.io.FileOutputStream;
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26 import java.io.IOException;
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27 import java.util.ArrayList;
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28 import java.util.Collections;
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29 import java.util.TreeMap;
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31 import org.tmatesoft.hg.internal.ByteArrayDataAccess;
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32 import org.tmatesoft.hg.internal.DataAccess;
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33 import org.tmatesoft.hg.internal.DataAccessProvider;
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34 import org.tmatesoft.hg.internal.DataSerializer;
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35 import org.tmatesoft.hg.internal.DigestHelper;
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36 import org.tmatesoft.hg.internal.FNCacheFile;
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37 import org.tmatesoft.hg.internal.Internals;
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38 import org.tmatesoft.hg.internal.Lifecycle;
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39 import org.tmatesoft.hg.internal.RepoInitializer;
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40 import org.tmatesoft.hg.internal.RevlogCompressor;
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41 import org.tmatesoft.hg.internal.RevlogStreamWriter;
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42 import org.tmatesoft.hg.repo.HgBundle;
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43 import org.tmatesoft.hg.repo.HgBundle.GroupElement;
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44 import org.tmatesoft.hg.repo.HgInvalidControlFileException;
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45 import org.tmatesoft.hg.repo.HgInvalidFileException;
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46 import org.tmatesoft.hg.repo.HgInvalidStateException;
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47 import org.tmatesoft.hg.repo.HgLookup;
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48 import org.tmatesoft.hg.repo.HgRemoteRepository;
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49 import org.tmatesoft.hg.repo.HgRepository;
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50 import org.tmatesoft.hg.repo.HgRuntimeException;
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51 import org.tmatesoft.hg.util.CancelSupport;
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52 import org.tmatesoft.hg.util.CancelledException;
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53 import org.tmatesoft.hg.util.Path;
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54 import org.tmatesoft.hg.util.PathRewrite;
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55 import org.tmatesoft.hg.util.ProgressSupport;
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56
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57 /**
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58 * WORK IN PROGRESS, DO NOT USE
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59 *
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60 * @author Artem Tikhomirov
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61 * @author TMate Software Ltd.
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62 */
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63 public class HgCloneCommand extends HgAbstractCommand<HgCloneCommand> {
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64
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65 private File destination;
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66 private HgRemoteRepository srcRepo;
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67
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68 public HgCloneCommand() {
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69 }
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70
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71 /**
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72 * @param folder location to become root of the repository (i.e. where <em>.hg</em> folder would reside). Either
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73 * shall not exist or be empty otherwise.
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74 * @return <code>this</code> for convenience
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75 */
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76 public HgCloneCommand destination(File folder) {
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77 destination = folder;
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78 return this;
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79 }
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81 public HgCloneCommand source(HgRemoteRepository hgRemote) {
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82 srcRepo = hgRemote;
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83 return this;
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84 }
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85
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86 /**
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87 *
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88 * @return
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89 * @throws HgBadArgumentException
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90 * @throws HgRemoteConnectionException
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91 * @throws HgRepositoryNotFoundException
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92 * @throws HgException
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93 * @throws CancelledException
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94 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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95 */
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96 public HgRepository execute() throws HgException, CancelledException {
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97 if (destination == null) {
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98 throw new IllegalArgumentException("Destination not set", null);
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99 }
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100 if (srcRepo == null || srcRepo.isInvalid()) {
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101 throw new HgBadArgumentException("Bad source repository", null);
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102 }
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103 if (destination.exists()) {
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104 if (!destination.isDirectory()) {
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105 throw new HgBadArgumentException(String.format("%s is not a directory", destination), null);
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106 } else if (destination.list().length > 0) {
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107 throw new HgBadArgumentException(String.format("%s shall be empty", destination), null);
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108 }
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109 } else {
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110 destination.mkdirs();
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111 }
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112 ProgressSupport progress = getProgressSupport(null);
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113 CancelSupport cancel = getCancelSupport(null, true);
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114 cancel.checkCancelled();
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115 // if cloning remote repo, which can stream and no revision is specified -
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116 // can use 'stream_out' wireproto
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117 //
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118 // pull all changes from the very beginning
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119 // XXX consult getContext() if by any chance has a bundle ready, if not, then read and register
186
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120 HgBundle completeChanges = srcRepo.getChanges(Collections.singletonList(NULL));
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121 cancel.checkCancelled();
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122 WriteDownMate mate = new WriteDownMate(srcRepo.getSessionContext(), destination, progress, cancel);
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123 try {
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124 // instantiate new repo in the destdir
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125 mate.initEmptyRepository();
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126 // pull changes
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127 completeChanges.inspectAll(mate);
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128 mate.checkFailure();
186
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129 mate.complete();
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130 } catch (IOException ex) {
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131 throw new HgInvalidFileException(getClass().getName(), ex);
186
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132 } finally {
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133 completeChanges.unlink();
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134 progress.done();
186
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135 }
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136 return new HgLookup().detect(destination);
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137 }
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138
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139
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140 // 1. process changelog, memorize nodeids to index
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141 // 2. process manifest, using map from step 3, collect manifest nodeids
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142 // 3. process every file, using map from 3, and consult set from step 4 to ensure repo is correct
512
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143 private static class WriteDownMate implements HgBundle.Inspector, Lifecycle {
186
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144 private final File hgDir;
190
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145 private final PathRewrite storagePathHelper;
512
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146 private final ProgressSupport progressSupport;
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147 private final CancelSupport cancelSupport;
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148 private final SessionContext ctx;
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149 private final Path.Source pathFactory;
186
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150 private FileOutputStream indexFile;
190
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151 private String filename; // human-readable name of the file being written, for log/exception purposes
186
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152
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153 private final TreeMap<Nodeid, Integer> changelogIndexes = new TreeMap<Nodeid, Integer>();
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154 private boolean collectChangelogIndexes = false;
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155
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156 private DataAccess prevRevContent;
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157 private final DigestHelper dh = new DigestHelper();
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158 // recently processed nodes last, so that index in the array may be used as a linkRevision or baseRevision
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159 private final ArrayList<Nodeid> revisionSequence = new ArrayList<Nodeid>();
186
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160
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161 private FNCacheFile fncacheFile;
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162 private RepoInitializer repoInit;
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163 private Lifecycle.Callback lifecycleCallback;
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164 private CancelledException cancelException;
186
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165
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166 private RevlogStreamWriter.HeaderWriter revlogHeader = new RevlogStreamWriter.HeaderWriter(true);
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167 private RevlogCompressor revlogDataZip;
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168
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169 public WriteDownMate(SessionContext sessionCtx, File destDir, ProgressSupport progress, CancelSupport cancel) {
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170 ctx = sessionCtx;
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171 hgDir = new File(destDir, ".hg");
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172 repoInit = new RepoInitializer();
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173 repoInit.setRequires(STORE | FNCACHE | DOTENCODE);
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174 storagePathHelper = repoInit.buildDataFilesHelper(sessionCtx);
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175 progressSupport = progress;
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176 cancelSupport = cancel;
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177 revlogDataZip = new RevlogCompressor(sessionCtx);
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178 pathFactory = ctx.getPathFactory();
186
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179 }
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180
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181 public void initEmptyRepository() throws IOException {
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182 repoInit.initEmptyRepository(hgDir);
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183 try {
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184 assert (repoInit.getRequires() & FNCACHE) != 0;
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185 fncacheFile = new FNCacheFile(Internals.getInstance(new HgLookup(ctx).detect(hgDir)));
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186 } catch (HgRepositoryNotFoundException ex) {
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187 // SHALL NOT HAPPEN provided we initialized empty repository successfully
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188 // TODO perhaps, with WriteDownMate moving to a more appropriate location,
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189 // we could instantiate HgRepository (or Internals) by other means, without exception?
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190 throw new IOException("Can't access fncache for newly created repository", ex);
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191 }
186
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192 }
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193
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194 public void complete() throws IOException {
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195 fncacheFile.write();
186
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196 }
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197
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198 public void changelogStart() {
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199 try {
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200 revlogHeader.offset(0).baseRevision(-1);
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201 revisionSequence.clear();
190
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202 indexFile = new FileOutputStream(new File(hgDir, filename = "store/00changelog.i"));
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203 collectChangelogIndexes = true;
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204 } catch (IOException ex) {
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205 throw new HgInvalidControlFileException("Failed to write changelog", ex, new File(hgDir, filename));
186
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206 }
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207 stopIfCancelled();
186
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208 }
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209
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210 public void changelogEnd() {
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211 try {
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212 clearPreviousContent();
186
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213 collectChangelogIndexes = false;
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214 closeIndexFile();
186
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215 } catch (IOException ex) {
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216 throw new HgInvalidControlFileException("Failed to write changelog", ex, new File(hgDir, filename));
186
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217 }
513
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218 progressSupport.worked(1);
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219 stopIfCancelled();
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220 }
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221
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222 public void manifestStart() {
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223 try {
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224 revlogHeader.offset(0).baseRevision(-1);
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225 revisionSequence.clear();
190
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226 indexFile = new FileOutputStream(new File(hgDir, filename = "store/00manifest.i"));
186
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227 } catch (IOException ex) {
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228 throw new HgInvalidControlFileException("Failed to write manifest", ex, new File(hgDir, filename));
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229 }
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230 stopIfCancelled();
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231 }
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232
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233 public void manifestEnd() {
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234 try {
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235 clearPreviousContent();
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236 closeIndexFile();
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237 } catch (IOException ex) {
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238 throw new HgInvalidControlFileException("Failed to write manifest", ex, new File(hgDir, filename));
186
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239 }
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240 progressSupport.worked(1);
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241 stopIfCancelled();
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242 }
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243
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244 public void fileStart(String name) {
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245 try {
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246 revlogHeader.offset(0).baseRevision(-1);
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247 revisionSequence.clear();
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248 fncacheFile.add(pathFactory.path(name));
292
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249 File file = new File(hgDir, filename = storagePathHelper.rewrite(name).toString());
186
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250 file.getParentFile().mkdirs();
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251 indexFile = new FileOutputStream(file);
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252 } catch (IOException ex) {
423
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253 String m = String.format("Failed to write file %s", filename);
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254 throw new HgInvalidControlFileException(m, ex, new File(filename));
186
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255 }
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256 stopIfCancelled();
186
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257 }
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258
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259 public void fileEnd(String name) {
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260 try {
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261 clearPreviousContent();
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262 closeIndexFile();
186
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263 } catch (IOException ex) {
423
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264 String m = String.format("Failed to write file %s", filename);
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265 throw new HgInvalidControlFileException(m, ex, new File(filename));
186
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266 }
513
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267 progressSupport.worked(1);
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268 stopIfCancelled();
186
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269 }
532
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270
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271 private void clearPreviousContent() {
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272 if (prevRevContent != null) {
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273 prevRevContent.done();
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274 prevRevContent = null;
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275 }
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276 }
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277
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278 private void closeIndexFile() throws IOException {
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279 indexFile.close();
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280 indexFile = null;
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281 filename = null;
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282 }
186
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283
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284 private int knownRevision(Nodeid p) {
274
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285 if (p.isNull()) {
186
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286 return -1;
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287 } else {
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288 for (int i = revisionSequence.size() - 1; i >= 0; i--) {
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289 if (revisionSequence.get(i).equals(p)) {
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290 return i;
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291 }
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292 }
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293 }
423
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294 String m = String.format("Can't find index of %s for file %s", p.shortNotation(), filename);
532
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295 throw new HgInvalidControlFileException(m, null, new File(hgDir, filename)).setRevision(p);
186
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296 }
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297
186
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298 public boolean element(GroupElement ge) {
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299 try {
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300 assert indexFile != null;
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301 boolean writeComplete = false;
532
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302 Nodeid deltaBase = ge.patchBase();
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303 if (deltaBase.isNull()) {
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304 // NOTE, can't use both parents isNull == true to empty prevRevContent
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305 // see build.gradle sample below why.
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306 prevRevContent = new DataAccess(); // empty data
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307 writeComplete = true;
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308 // if (writeComplete) would set baseRevision correctly,
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309 } else {
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310 Nodeid prevRevision = revisionSequence.size() > 0 ? revisionSequence.get(revisionSequence.size()-1) : Nodeid.NULL;
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311 if (!prevRevision.equals(deltaBase)) {
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312 // presently, bundle group elements always patch previous, see
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313 // (a) changegroup.py#builddeltaheader(): # do nothing with basenode, it is implicitly the previous one in HG10
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314 // (b) revlog.py#group(): prev, curr = revs[r], revs[r + 1]
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315 // for c in bundler.revchunk(self, curr, prev):
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316 // so there's no reason to have code here to extract contents of deltaBase revision
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317 String m = String.format("Revision %s import failed: delta base %s is not the last node we've handled (and know content for) %s", ge.node(), deltaBase, prevRevision);
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318 throw new HgInvalidStateException(m);
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319 }
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320 }
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321 //
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322 byte[] content = ge.apply(prevRevContent.byteArray());
186
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323 Nodeid p1 = ge.firstParent();
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324 Nodeid p2 = ge.secondParent();
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325 byte[] calculated = dh.sha1(p1, p2, content).asBinary();
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326 final Nodeid node = ge.node();
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327 if (!node.equalsTo(calculated)) {
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328 String m = String.format("Checksum failed: expected %s, calculated %s. File %s", node, calculated, filename);
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329 throw new HgRevisionIntegrityException(m, null, new File(hgDir, filename));
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330 }
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331 revlogHeader.nodeid(node);
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332 //
186
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333 if (collectChangelogIndexes) {
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334 changelogIndexes.put(node, revisionSequence.size());
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335 revlogHeader.linkRevision(revisionSequence.size());
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336 } else {
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337 Integer csRev = changelogIndexes.get(ge.cset());
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338 if (csRev == null) {
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339 throw new HgInvalidStateException(String.format("Changelog doesn't contain revision %s of %s", ge.cset().shortNotation(), filename));
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340 }
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341 revlogHeader.linkRevision(csRev.intValue());
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342 }
532
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343 //
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344 revlogHeader.parents(knownRevision(p1), knownRevision(p2));
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345 //
358
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346 byte[] patchContent = ge.rawDataByteArray();
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347 // no reason to keep patch if it's close (here, >75%) in size to the complete contents,
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348 // save patching effort in this case
534
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349 writeComplete = writeComplete || preferCompleteOverPatch(patchContent.length, content.length);
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350
186
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351 if (writeComplete) {
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352 revlogHeader.baseRevision(revisionSequence.size());
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353 }
532
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354 assert revlogHeader.baseRevision() >= 0;
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355
358
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356 final byte[] sourceData = writeComplete ? content : patchContent;
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357 revlogDataZip.reset(new DataSerializer.ByteArrayDataSource(sourceData));
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358 final int compressedLen;
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359 final boolean useUncompressedData = preferCompressedOverComplete(revlogDataZip.getCompressedLength(), sourceData.length);
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360 if (useUncompressedData) {
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361 // compression wasn't too effective,
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362 compressedLen = sourceData.length + 1 /*1 byte for 'u' - uncompressed prefix byte*/;
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363 } else {
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364 compressedLen= revlogDataZip.getCompressedLength();
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365 }
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366
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367 revlogHeader.length(content.length, compressedLen);
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368
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369 // XXX may be wise not to create DataSerializer for each revision, but for a file
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370 DataAccessProvider.StreamDataSerializer sds = new DataAccessProvider.StreamDataSerializer(ctx.getLog(), indexFile) {
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371 @Override
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372 public void done() {
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373 // override parent behavior not to close stream in use
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374 }
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375 };
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376 revlogHeader.serialize(sds);
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377
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378 if (useUncompressedData) {
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379 indexFile.write((byte) 'u');
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380 indexFile.write(sourceData);
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381 } else {
534
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382 int actualCompressedLenWritten = revlogDataZip.writeCompressedData(sds);
530
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383 if (actualCompressedLenWritten != compressedLen) {
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384 throw new HgInvalidStateException(String.format("Expected %d bytes of compressed data, but actually wrote %d in %s", compressedLen, actualCompressedLenWritten, filename));
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385 }
186
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386 }
534
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387 sds.done();
186
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388 //
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389 revisionSequence.add(node);
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390 prevRevContent.done();
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391 prevRevContent = new ByteArrayDataAccess(content);
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392 } catch (IOException ex) {
423
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393 String m = String.format("Failed to write revision %s of file %s", ge.node().shortNotation(), filename);
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394 throw new HgInvalidControlFileException(m, ex, new File(hgDir, filename));
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395 }
513
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396 return cancelException == null;
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397 }
530
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398 /*
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399 $ hg debugindex build.gradle
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400 rev offset length base linkrev nodeid p1 p2
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401 0 0 857 0 454 b2a1b20d1933 000000000000 000000000000
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402 1 857 319 0 455 5324c8f2b550 b2a1b20d1933 000000000000
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403 2 1176 533 0 460 4011d52141cd 5324c8f2b550 000000000000
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404 3 1709 85 0 463 d0be58845306 4011d52141cd 000000000000
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405 4 1794 105 0 464 3ddd456244a0 d0be58845306 000000000000
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406 5 1899 160 0 466 a3f374fbf33a 3ddd456244a0 000000000000
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407 6 2059 133 0 468 0227d28e0db6 a3f374fbf33a 000000000000
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408
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409 once we get a bundle for this repository and look into it for the same file:
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410
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411 $hg debugbundle -a /tmp/hg-bundle-4418325145435980614.tmp
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412 format: id, p1, p2, cset, delta base, len(delta)
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413
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414 build.gradle
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415 62a101b7994c6c5b0423ba6c802f8c64d24ef784 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 6ec4af642ba8024edd636af15e672c97cc3294e4 0000000000000000000000000000000000000000 1368
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parents: 513
diff changeset
416 b2a1b20d1933d0605aab6780ee52fe5ab3073832 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 7dcc920e2d57d5850ee9f08ac863251460565bd3 62a101b7994c6c5b0423ba6c802f8c64d24ef784 2373
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
417 5324c8f2b5503a4d1ead3ac40a9851c27572166b b2a1b20d1933d0605aab6780ee52fe5ab3073832 0000000000000000000000000000000000000000 7b883bf03b14ccea8ee74db0a34f9f66ca644a3c b2a1b20d1933d0605aab6780ee52fe5ab3073832 579
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
418 4011d52141cd717c92cbf350a93522d2f3ee415e 5324c8f2b5503a4d1ead3ac40a9851c27572166b 0000000000000000000000000000000000000000 55e9588b84b83aa96fe76a06ee8bf067c5d3c90e 5324c8f2b5503a4d1ead3ac40a9851c27572166b 1147
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
419 d0be588453068787dcb3ee05f8edfe47fdd5ae78 4011d52141cd717c92cbf350a93522d2f3ee415e 0000000000000000000000000000000000000000 ad0322a4af204547c400e1846b2b83d446ab8da5 4011d52141cd717c92cbf350a93522d2f3ee415e 85
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
420 3ddd456244a08f81779163d9faf922a6dcd9e53e d0be588453068787dcb3ee05f8edfe47fdd5ae78 0000000000000000000000000000000000000000 3ace1fc95d0a1a941b6427c60b6e624f96dd71ad d0be588453068787dcb3ee05f8edfe47fdd5ae78 151
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
421 a3f374fbf33aba1cc3b4f472db022b5185880f5d 3ddd456244a08f81779163d9faf922a6dcd9e53e 0000000000000000000000000000000000000000 3ca4ae7bdd3890b8ed89bfea1b42af593e04b373 3ddd456244a08f81779163d9faf922a6dcd9e53e 195
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
422 0227d28e0db69afebee34cd5a4151889fb6271da a3f374fbf33aba1cc3b4f472db022b5185880f5d 0000000000000000000000000000000000000000 31bd09da0dcfe48e1fc662143f91ff402238aa84 a3f374fbf33aba1cc3b4f472db022b5185880f5d 145
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
423
532
688c1ab113bb Introduce explicit reference to base patch in bundle's group element, use it when cloning to fix defect when few revisions list null,null parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 531
diff changeset
424 but there's no delta base information in the bundle file, it's merely a hard-coded convention
530
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
425
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
426 It's unclear where the first chunk (identified 62a101b7...) comes from (by the way, there's no such changeset as 6ec4af... as specified in the chunk, while 7dcc920e.. IS changeset 454)
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
427
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
428 EXPLANATION:
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
429 if cloned repository comes from svnkit repo (where's the gradle branch):
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
430 $hg debugindex build.gradle
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
431 rev offset length base linkrev nodeid p1 p2
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
432 0 0 590 0 213 62a101b7994c 000000000000 000000000000
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
433 1 590 872 0 452 b2a1b20d1933 000000000000 000000000000
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
434 2 1462 319 0 453 5324c8f2b550 b2a1b20d1933 000000000000
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
435 3 1781 533 0 459 4011d52141cd 5324c8f2b550 000000000000
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
436 4 2314 85 0 462 d0be58845306 4011d52141cd 000000000000
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
437 5 2399 105 0 466 3ddd456244a0 d0be58845306 000000000000
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
438 6 2504 160 0 468 a3f374fbf33a 3ddd456244a0 000000000000
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
439 7 2664 133 0 470 0227d28e0db6 a3f374fbf33a 000000000000
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
440
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
441 and the aforementioned bundle was result of hg incoming svnkit!!!
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
442 */
512
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
443
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
444 public void start(int count, Callback callback, Object token) {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
445 progressSupport.start(count);
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
446 lifecycleCallback = callback;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
447 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
448
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
449 public void finish(Object token) {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
450 progressSupport.done();
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
451 lifecycleCallback = null;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
452 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
453
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
454 public void checkFailure() throws CancelledException {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
455 if (cancelException != null) {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
456 throw cancelException;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
457 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
458 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
459
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
460 private void stopIfCancelled() {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
461 try {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
462 cancelSupport.checkCancelled();
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
463 return;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
464 } catch (CancelledException ex) {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
465 cancelException = ex;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
466 lifecycleCallback.stop();
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
467 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
468 }
186
44a34baabea0 Clone refactored into a command. HgBundle needs means to control its lifecycle, to be deleted when no longer needed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
469 }
44a34baabea0 Clone refactored into a command. HgBundle needs means to control its lifecycle, to be deleted when no longer needed
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
470 }