annotate src/org/tmatesoft/hg/core/HgCloneCommand.java @ 534:243202f1bda5

Commit: refactor revision creation code from clone command to work separately, fit into existing library structure
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Mon, 04 Feb 2013 18:00:55 +0100
parents 688c1ab113bb
children 9edfd5a223b8
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.LinkedList;
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30 import java.util.TreeMap;
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32 import org.tmatesoft.hg.internal.ByteArrayDataAccess;
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33 import org.tmatesoft.hg.internal.DataAccess;
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34 import org.tmatesoft.hg.internal.DataAccessProvider;
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35 import org.tmatesoft.hg.internal.DataSerializer;
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36 import org.tmatesoft.hg.internal.DigestHelper;
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37 import org.tmatesoft.hg.internal.Lifecycle;
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38 import org.tmatesoft.hg.internal.RepoInitializer;
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39 import org.tmatesoft.hg.internal.RevlogCompressor;
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40 import org.tmatesoft.hg.internal.RevlogStreamWriter;
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41 import org.tmatesoft.hg.repo.HgBundle;
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42 import org.tmatesoft.hg.repo.HgBundle.GroupElement;
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43 import org.tmatesoft.hg.repo.HgInvalidControlFileException;
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44 import org.tmatesoft.hg.repo.HgInvalidFileException;
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45 import org.tmatesoft.hg.repo.HgInvalidStateException;
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46 import org.tmatesoft.hg.repo.HgLookup;
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47 import org.tmatesoft.hg.repo.HgRemoteRepository;
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48 import org.tmatesoft.hg.repo.HgRepository;
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49 import org.tmatesoft.hg.repo.HgRuntimeException;
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50 import org.tmatesoft.hg.util.CancelSupport;
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51 import org.tmatesoft.hg.util.CancelledException;
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52 import org.tmatesoft.hg.util.PathRewrite;
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53 import org.tmatesoft.hg.util.ProgressSupport;
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54
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55 /**
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56 * WORK IN PROGRESS, DO NOT USE
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57 *
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58 * @author Artem Tikhomirov
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59 * @author TMate Software Ltd.
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60 */
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61 public class HgCloneCommand extends HgAbstractCommand<HgCloneCommand> {
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62
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63 private File destination;
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64 private HgRemoteRepository srcRepo;
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65
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66 public HgCloneCommand() {
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67 }
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68
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69 /**
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70 * @param folder location to become root of the repository (i.e. where <em>.hg</em> folder would reside). Either
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71 * shall not exist or be empty otherwise.
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72 * @return <code>this</code> for convenience
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73 */
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74 public HgCloneCommand destination(File folder) {
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75 destination = folder;
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76 return this;
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77 }
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79 public HgCloneCommand source(HgRemoteRepository hgRemote) {
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80 srcRepo = hgRemote;
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81 return this;
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82 }
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83
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84 /**
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85 *
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86 * @return
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87 * @throws HgBadArgumentException
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88 * @throws HgRemoteConnectionException
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89 * @throws HgRepositoryNotFoundException
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90 * @throws HgException
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91 * @throws CancelledException
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92 * @throws HgRuntimeException subclass thereof to indicate issues with the library. <em>Runtime exception</em>
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93 */
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94 public HgRepository execute() throws HgException, CancelledException {
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95 if (destination == null) {
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96 throw new IllegalArgumentException("Destination not set", null);
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97 }
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98 if (srcRepo == null || srcRepo.isInvalid()) {
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99 throw new HgBadArgumentException("Bad source repository", null);
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100 }
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101 if (destination.exists()) {
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102 if (!destination.isDirectory()) {
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103 throw new HgBadArgumentException(String.format("%s is not a directory", destination), null);
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104 } else if (destination.list().length > 0) {
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105 throw new HgBadArgumentException(String.format("%s shall be empty", destination), null);
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106 }
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107 } else {
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108 destination.mkdirs();
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109 }
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110 ProgressSupport progress = getProgressSupport(null);
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111 CancelSupport cancel = getCancelSupport(null, true);
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112 cancel.checkCancelled();
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113 // if cloning remote repo, which can stream and no revision is specified -
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114 // can use 'stream_out' wireproto
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115 //
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116 // pull all changes from the very beginning
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117 // XXX consult getContext() if by any chance has a bundle ready, if not, then read and register
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118 HgBundle completeChanges = srcRepo.getChanges(Collections.singletonList(NULL));
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119 cancel.checkCancelled();
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120 WriteDownMate mate = new WriteDownMate(srcRepo.getSessionContext(), destination, progress, cancel);
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121 try {
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122 // instantiate new repo in the destdir
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123 mate.initEmptyRepository();
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124 // pull changes
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125 completeChanges.inspectAll(mate);
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126 mate.checkFailure();
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127 mate.complete();
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128 } catch (IOException ex) {
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129 throw new HgInvalidFileException(getClass().getName(), ex);
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130 } finally {
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131 completeChanges.unlink();
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132 progress.done();
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133 }
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134 return new HgLookup().detect(destination);
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135 }
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136
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137
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138 // 1. process changelog, memorize nodeids to index
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139 // 2. process manifest, using map from step 3, collect manifest nodeids
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140 // 3. process every file, using map from 3, and consult set from step 4 to ensure repo is correct
512
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141 private static class WriteDownMate implements HgBundle.Inspector, Lifecycle {
186
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142 private final File hgDir;
190
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143 private final PathRewrite storagePathHelper;
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144 private final ProgressSupport progressSupport;
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145 private final CancelSupport cancelSupport;
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146 private final SessionContext ctx;
186
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147 private FileOutputStream indexFile;
190
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148 private String filename; // human-readable name of the file being written, for log/exception purposes
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149
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150 private final TreeMap<Nodeid, Integer> changelogIndexes = new TreeMap<Nodeid, Integer>();
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151 private boolean collectChangelogIndexes = false;
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152
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153 private DataAccess prevRevContent;
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154 private final DigestHelper dh = new DigestHelper();
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155 // recently processed nodes last, so that index in the array may be used as a linkRevision or baseRevision
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156 private final ArrayList<Nodeid> revisionSequence = new ArrayList<Nodeid>();
186
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157
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158 private final LinkedList<String> fncacheFiles = new LinkedList<String>();
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159 private RepoInitializer repoInit;
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160 private Lifecycle.Callback lifecycleCallback;
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161 private CancelledException cancelException;
186
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162
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163 private RevlogStreamWriter.HeaderWriter revlogHeader = new RevlogStreamWriter.HeaderWriter(true);
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164 private RevlogCompressor revlogDataZip;
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165
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166 public WriteDownMate(SessionContext sessionCtx, File destDir, ProgressSupport progress, CancelSupport cancel) {
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167 ctx = sessionCtx;
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168 hgDir = new File(destDir, ".hg");
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169 repoInit = new RepoInitializer();
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170 repoInit.setRequires(STORE | FNCACHE | DOTENCODE);
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171 storagePathHelper = repoInit.buildDataFilesHelper(sessionCtx);
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172 progressSupport = progress;
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173 cancelSupport = cancel;
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174 revlogDataZip = new RevlogCompressor(sessionCtx);
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175 }
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176
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177 public void initEmptyRepository() throws IOException {
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178 repoInit.initEmptyRepository(hgDir);
186
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179 }
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180
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181 public void complete() throws IOException {
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182 FileOutputStream fncacheFile = new FileOutputStream(new File(hgDir, "store/fncache"));
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183 for (String s : fncacheFiles) {
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184 fncacheFile.write(s.getBytes());
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185 fncacheFile.write(0x0A); // http://mercurial.selenic.com/wiki/fncacheRepoFormat
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186 }
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187 fncacheFile.close();
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188 }
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189
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190 public void changelogStart() {
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191 try {
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192 revlogHeader.offset(0).baseRevision(-1);
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193 revisionSequence.clear();
190
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194 indexFile = new FileOutputStream(new File(hgDir, filename = "store/00changelog.i"));
186
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195 collectChangelogIndexes = true;
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196 } catch (IOException ex) {
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197 throw new HgInvalidControlFileException("Failed to write changelog", ex, new File(hgDir, filename));
186
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198 }
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199 stopIfCancelled();
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200 }
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201
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202 public void changelogEnd() {
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203 try {
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204 clearPreviousContent();
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205 collectChangelogIndexes = false;
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206 closeIndexFile();
186
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207 } catch (IOException ex) {
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208 throw new HgInvalidControlFileException("Failed to write changelog", ex, new File(hgDir, filename));
186
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209 }
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210 progressSupport.worked(1);
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211 stopIfCancelled();
186
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212 }
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213
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214 public void manifestStart() {
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215 try {
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216 revlogHeader.offset(0).baseRevision(-1);
186
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217 revisionSequence.clear();
190
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218 indexFile = new FileOutputStream(new File(hgDir, filename = "store/00manifest.i"));
186
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219 } catch (IOException ex) {
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220 throw new HgInvalidControlFileException("Failed to write manifest", ex, new File(hgDir, filename));
186
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221 }
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222 stopIfCancelled();
186
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223 }
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224
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225 public void manifestEnd() {
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226 try {
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227 clearPreviousContent();
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228 closeIndexFile();
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229 } catch (IOException ex) {
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230 throw new HgInvalidControlFileException("Failed to write manifest", ex, new File(hgDir, filename));
186
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231 }
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232 progressSupport.worked(1);
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233 stopIfCancelled();
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234 }
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235
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236 public void fileStart(String name) {
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237 try {
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238 revlogHeader.offset(0).baseRevision(-1);
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239 revisionSequence.clear();
418
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240 fncacheFiles.add("data/" + name + ".i"); // TODO post-1.0 this is pure guess,
186
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241 // need to investigate more how filenames are kept in fncache
292
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242 File file = new File(hgDir, filename = storagePathHelper.rewrite(name).toString());
186
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243 file.getParentFile().mkdirs();
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244 indexFile = new FileOutputStream(file);
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245 } catch (IOException ex) {
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246 String m = String.format("Failed to write file %s", filename);
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247 throw new HgInvalidControlFileException(m, ex, new File(filename));
186
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248 }
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249 stopIfCancelled();
186
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250 }
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251
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252 public void fileEnd(String name) {
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253 try {
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254 clearPreviousContent();
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255 closeIndexFile();
186
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256 } catch (IOException ex) {
423
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257 String m = String.format("Failed to write file %s", filename);
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258 throw new HgInvalidControlFileException(m, ex, new File(filename));
186
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259 }
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260 progressSupport.worked(1);
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261 stopIfCancelled();
186
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262 }
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263
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264 private void clearPreviousContent() {
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265 if (prevRevContent != null) {
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266 prevRevContent.done();
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267 prevRevContent = null;
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268 }
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269 }
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270
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271 private void closeIndexFile() throws IOException {
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272 indexFile.close();
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273 indexFile = null;
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274 filename = null;
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275 }
186
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276
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277 private int knownRevision(Nodeid p) {
274
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278 if (p.isNull()) {
186
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279 return -1;
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280 } else {
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281 for (int i = revisionSequence.size() - 1; i >= 0; i--) {
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282 if (revisionSequence.get(i).equals(p)) {
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283 return i;
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284 }
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285 }
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286 }
423
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287 String m = String.format("Can't find index of %s for file %s", p.shortNotation(), filename);
532
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288 throw new HgInvalidControlFileException(m, null, new File(hgDir, filename)).setRevision(p);
186
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289 }
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290
186
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291 public boolean element(GroupElement ge) {
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292 try {
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293 assert indexFile != null;
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294 boolean writeComplete = false;
532
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295 Nodeid deltaBase = ge.patchBase();
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296 if (deltaBase.isNull()) {
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297 // NOTE, can't use both parents isNull == true to empty prevRevContent
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298 // see build.gradle sample below why.
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299 prevRevContent = new DataAccess(); // empty data
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300 writeComplete = true;
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301 // if (writeComplete) would set baseRevision correctly,
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302 } else {
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303 Nodeid prevRevision = revisionSequence.size() > 0 ? revisionSequence.get(revisionSequence.size()-1) : Nodeid.NULL;
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304 if (!prevRevision.equals(deltaBase)) {
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305 // presently, bundle group elements always patch previous, see
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306 // (a) changegroup.py#builddeltaheader(): # do nothing with basenode, it is implicitly the previous one in HG10
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307 // (b) revlog.py#group(): prev, curr = revs[r], revs[r + 1]
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308 // for c in bundler.revchunk(self, curr, prev):
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309 // so there's no reason to have code here to extract contents of deltaBase revision
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310 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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311 throw new HgInvalidStateException(m);
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312 }
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313 }
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314 //
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315 byte[] content = ge.apply(prevRevContent.byteArray());
186
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316 Nodeid p1 = ge.firstParent();
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317 Nodeid p2 = ge.secondParent();
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318 byte[] calculated = dh.sha1(p1, p2, content).asBinary();
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319 final Nodeid node = ge.node();
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320 if (!node.equalsTo(calculated)) {
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321 String m = String.format("Checksum failed: expected %s, calculated %s. File %s", node, calculated, filename);
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322 throw new HgRevisionIntegrityException(m, null, new File(hgDir, filename));
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323 }
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324 revlogHeader.nodeid(node);
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325 //
186
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326 if (collectChangelogIndexes) {
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327 changelogIndexes.put(node, revisionSequence.size());
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328 revlogHeader.linkRevision(revisionSequence.size());
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329 } else {
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330 Integer csRev = changelogIndexes.get(ge.cset());
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331 if (csRev == null) {
423
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332 throw new HgInvalidStateException(String.format("Changelog doesn't contain revision %s of %s", ge.cset().shortNotation(), filename));
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333 }
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334 revlogHeader.linkRevision(csRev.intValue());
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335 }
532
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336 //
530
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337 revlogHeader.parents(knownRevision(p1), knownRevision(p2));
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338 //
358
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339 byte[] patchContent = ge.rawDataByteArray();
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340 // no reason to keep patch if it's close (here, >75%) in size to the complete contents,
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341 // save patching effort in this case
534
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342 writeComplete = writeComplete || preferCompleteOverPatch(patchContent.length, content.length);
532
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343
186
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344 if (writeComplete) {
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345 revlogHeader.baseRevision(revisionSequence.size());
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346 }
532
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347 assert revlogHeader.baseRevision() >= 0;
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348
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349 final byte[] sourceData = writeComplete ? content : patchContent;
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350 revlogDataZip.reset(new DataSerializer.ByteArrayDataSource(sourceData));
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351 final int compressedLen;
534
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352 final boolean useUncompressedData = preferCompressedOverComplete(revlogDataZip.getCompressedLength(), sourceData.length);
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353 if (useUncompressedData) {
186
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354 // compression wasn't too effective,
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355 compressedLen = sourceData.length + 1 /*1 byte for 'u' - uncompressed prefix byte*/;
186
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356 } else {
534
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357 compressedLen= revlogDataZip.getCompressedLength();
186
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358 }
530
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359
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360 revlogHeader.length(content.length, compressedLen);
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361
534
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362 // XXX may be wise not to create DataSerializer for each revision, but for a file
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363 DataAccessProvider.StreamDataSerializer sds = new DataAccessProvider.StreamDataSerializer(ctx.getLog(), indexFile) {
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364 @Override
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365 public void done() {
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366 // override parent behavior not to close stream in use
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367 }
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368 };
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369 revlogHeader.serialize(sds);
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370
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371 if (useUncompressedData) {
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372 indexFile.write((byte) 'u');
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373 indexFile.write(sourceData);
186
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374 } else {
534
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375 int actualCompressedLenWritten = revlogDataZip.writeCompressedData(sds);
530
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376 if (actualCompressedLenWritten != compressedLen) {
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377 throw new HgInvalidStateException(String.format("Expected %d bytes of compressed data, but actually wrote %d in %s", compressedLen, actualCompressedLenWritten, filename));
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378 }
186
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379 }
534
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380 sds.done();
186
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381 //
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382 revisionSequence.add(node);
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383 prevRevContent.done();
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384 prevRevContent = new ByteArrayDataAccess(content);
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385 } catch (IOException ex) {
423
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386 String m = String.format("Failed to write revision %s of file %s", ge.node().shortNotation(), filename);
531
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387 throw new HgInvalidControlFileException(m, ex, new File(hgDir, filename));
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388 }
513
a41d955dc360 Issue 39: HgCloneCommand doesn't use CancelSupport/ProgressSupport handlers
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389 return cancelException == null;
186
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390 }
530
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391 /*
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392 $ hg debugindex build.gradle
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393 rev offset length base linkrev nodeid p1 p2
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394 0 0 857 0 454 b2a1b20d1933 000000000000 000000000000
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395 1 857 319 0 455 5324c8f2b550 b2a1b20d1933 000000000000
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396 2 1176 533 0 460 4011d52141cd 5324c8f2b550 000000000000
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397 3 1709 85 0 463 d0be58845306 4011d52141cd 000000000000
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398 4 1794 105 0 464 3ddd456244a0 d0be58845306 000000000000
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399 5 1899 160 0 466 a3f374fbf33a 3ddd456244a0 000000000000
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400 6 2059 133 0 468 0227d28e0db6 a3f374fbf33a 000000000000
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401
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diff changeset
402 once we get a bundle for this repository and look into it for the same file:
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403
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404 $hg debugbundle -a /tmp/hg-bundle-4418325145435980614.tmp
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405 format: id, p1, p2, cset, delta base, len(delta)
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406
0f6fa88e2162 Towards commit command: refactor clone, extract pieces to reuse. Describe a defect discovered when bundle has few patches with 0,0 parents
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407 build.gradle
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408 62a101b7994c6c5b0423ba6c802f8c64d24ef784 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 6ec4af642ba8024edd636af15e672c97cc3294e4 0000000000000000000000000000000000000000 1368
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409 b2a1b20d1933d0605aab6780ee52fe5ab3073832 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 7dcc920e2d57d5850ee9f08ac863251460565bd3 62a101b7994c6c5b0423ba6c802f8c64d24ef784 2373
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410 5324c8f2b5503a4d1ead3ac40a9851c27572166b b2a1b20d1933d0605aab6780ee52fe5ab3073832 0000000000000000000000000000000000000000 7b883bf03b14ccea8ee74db0a34f9f66ca644a3c b2a1b20d1933d0605aab6780ee52fe5ab3073832 579
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 513
diff changeset
411 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
412 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
413 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
414 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
415 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
416
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
417 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
418
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 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
420
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 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
422 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
423 $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
424 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
425 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
426 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
427 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
428 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
429 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
430 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
431 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
432 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
433
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 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
435 */
512
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
436
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
437 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
438 progressSupport.start(count);
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
439 lifecycleCallback = callback;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
440 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
441
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
442 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
443 progressSupport.done();
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
444 lifecycleCallback = null;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
445 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
446
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
447 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
448 if (cancelException != null) {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
449 throw cancelException;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
450 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
451 }
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 private void stopIfCancelled() {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
454 try {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
455 cancelSupport.checkCancelled();
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
456 return;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
457 } catch (CancelledException ex) {
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
458 cancelException = ex;
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
459 lifecycleCallback.stop();
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
460 }
10ca3ede8367 Issue 39: Progress and Cancel support for Clone command
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 490
diff changeset
461 }
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
462 }
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
463 }