Mercurial > hg4j

annotate src/com/tmate/hgkit/console/Incoming.java @ 42:92c3d0920d58

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Real integrity check, with exception. DigestHelper refactored to accomodate new needs
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 14 Jan 2011 04:29:03 +0100
parents 565ce0835674
children
rev   line source
31
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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1 /*
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2 * Copyright (c) 2011 Artem Tikhomirov
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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3 */
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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4 package com.tmate.hgkit.console;
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5
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6 import java.util.Collection;
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7 import java.util.HashSet;
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8 import java.util.LinkedHashSet;
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9 import java.util.LinkedList;
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10 import java.util.List;
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11
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12 import com.tmate.hgkit.fs.RepositoryLookup;
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13 import com.tmate.hgkit.ll.HgRepository;
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14 import com.tmate.hgkit.ll.Nodeid;
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15 import com.tmate.hgkit.ll.Revlog;
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16
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17 /**
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18 *
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
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19 * @author artem
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20 */
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21 public class Incoming {
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22
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23 public static void main(String[] args) throws Exception {
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24 RepositoryLookup repoLookup = new RepositoryLookup();
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25 RepositoryLookup.Options cmdLineOpts = RepositoryLookup.Options.parse(args);
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26 HgRepository hgRepo = repoLookup.detect(cmdLineOpts);
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27 if (hgRepo.isInvalid()) {
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28 System.err.printf("Can't find repository in: %s\n", hgRepo.getLocation());
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29 return;
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30 }
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31 // in fact, all we need from changelog is set of all nodeids. However, since ParentWalker reuses same Nodeids, it's not too expensive
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32 // to reuse it here, XXX although later this may need to be refactored
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33 final Revlog.ParentWalker pw = hgRepo.getChangelog().new ParentWalker();
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34 pw.init();
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35 //
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36 HashSet<Nodeid> base = new HashSet<Nodeid>();
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37 HashSet<Nodeid> unknownRemoteHeads = new HashSet<Nodeid>();
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38 // imagine empty repository - any nodeid from remote heads would be unknown
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39 unknownRemoteHeads.add(Nodeid.fromAscii("382cfe9463db0484a14136e4b38407419525f0c0".getBytes(), 0, 40));
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40 //
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41 LinkedList<RemoteBranch> remoteBranches = new LinkedList<RemoteBranch>();
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42 remoteBranches(unknownRemoteHeads, remoteBranches);
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43 //
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44 HashSet<Nodeid> visited = new HashSet<Nodeid>();
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45 HashSet<RemoteBranch> processed = new HashSet<RemoteBranch>();
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46 LinkedList<Nodeid[]> toScan = new LinkedList<Nodeid[]>();
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47 LinkedHashSet<Nodeid> toFetch = new LinkedHashSet<Nodeid>();
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48 // next one seems to track heads we've asked (or plan to ask) remote.branches for
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49 HashSet<Nodeid> unknownHeads /*req*/ = new HashSet<Nodeid>(unknownRemoteHeads);
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50 while (!remoteBranches.isEmpty()) {
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51 LinkedList<Nodeid> toQueryRemote = new LinkedList<Nodeid>();
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52 while (!remoteBranches.isEmpty()) {
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53 RemoteBranch next = remoteBranches.removeFirst();
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54 if (visited.contains(next.head) || processed.contains(next)) {
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55 continue;
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56 }
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57 if (Nodeid.NULL.equals(next.head)) {
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58 // it's discovery.py that expects next.head to be nullid here, I can't imagine how this may happen, hence this exception
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59 throw new IllegalStateException("I wonder if null if may ever get here with remote branches");
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60 } else if (pw.knownNode(next.root)) {
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61 // root of the remote change is known locally, analyze to find exact missing changesets
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62 toScan.addLast(new Nodeid[] { next.head, next.root });
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63 processed.add(next);
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64 } else {
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65 if (!visited.contains(next.root) && !toFetch.contains(next.root)) {
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66 // if parents are locally known, this is new branch (sequence of changes) (sequence sprang out of known parents)
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67 if ((next.p1 == null || pw.knownNode(next.p1)) && (next.p2 == null || pw.knownNode(next.p2))) {
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68 toFetch.add(next.root);
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69 }
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70 // XXX perhaps, may combine this parent processing below (I don't understand what this code is exactly about)
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71 if (pw.knownNode(next.p1)) {
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72 base.add(next.p1);
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73 }
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74 if (pw.knownNode(next.p2)) {
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75 base.add(next.p2);
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76 }
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77 }
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78 if (next.p1 != null && !pw.knownNode(next.p1) && !unknownHeads.contains(next.p1)) {
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79 toQueryRemote.add(next.p1);
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80 unknownHeads.add(next.p1);
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81 }
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82 if (next.p2 != null && !pw.knownNode(next.p2) && !unknownHeads.contains(next.p2)) {
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83 toQueryRemote.add(next.p2);
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84 unknownHeads.add(next.p2);
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85 }
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86 }
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87 visited.add(next.head);
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88 }
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89 if (!toQueryRemote.isEmpty()) {
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90 // discovery.py in fact does this in batches of 10 revisions a time.
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91 // however, this slicing may be done in remoteBranches call instead (if needed)
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92 remoteBranches(toQueryRemote, remoteBranches);
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93 }
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94 }
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95 while (!toScan.isEmpty()) {
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96 Nodeid[] head_root = toScan.removeFirst();
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97 List<Nodeid> nodesBetween = remoteBetween(head_root[0], head_root[1], new LinkedList<Nodeid>());
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98 nodesBetween.add(head_root[1]);
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99 int x = 1;
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100 Nodeid p = head_root[0];
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101 for (Nodeid i : nodesBetween) {
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102 System.out.println("narrowing " + x + ":" + nodesBetween.size() + " " + i.shortNotation());
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103 if (pw.knownNode(i)) {
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104 if (x <= 2) {
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105 toFetch.add(p);
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106 base.add(i);
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107 } else {
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108 // XXX original discovery.py collects new elements to scan separately
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109 // likely to "batch" calls to server
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110 System.out.println("narrowed branch search to " + p.shortNotation() + ":" + i.shortNotation());
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111 toScan.addLast(new Nodeid[] { p, i });
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112 }
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113 break;
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114 }
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115 x = x << 1;
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116 p = i;
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117 }
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118 }
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119 for (Nodeid n : toFetch) {
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120 if (pw.knownNode(n)) {
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121 System.out.println("Erroneous to fetch:" + n);
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122 } else {
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123 System.out.println(n);
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124 }
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125 }
33
565ce0835674 TODO added, to try stream for unzip in revlog
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parents: 31
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126
31
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127 }
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128
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129 static final class RemoteBranch {
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130 public Nodeid head, root, p1, p2;
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131
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132 @Override
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133 public boolean equals(Object obj) {
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134 if (this == obj) {
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135 return true;
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136 }
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137 if (false == obj instanceof RemoteBranch) {
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138 return false;
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139 }
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140 RemoteBranch o = (RemoteBranch) obj;
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141 return head.equals(o.head) && root.equals(o.root) && (p1 == null && o.p1 == null || p1.equals(o.p1)) && (p2 == null && o.p2 == null || p2.equals(o.p2));
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142 }
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143 }
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144
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145 private static void remoteBranches(Collection<Nodeid> unknownRemoteHeads, List<RemoteBranch> remoteBranches) {
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146 // discovery.findcommonincoming:
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147 // unknown = remote.branches(remote.heads);
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148 // sent: cmd=branches&roots=d6d2a630f4a6d670c90a5ca909150f2b426ec88f+
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149 // received: d6d2a630f4a6d670c90a5ca909150f2b426ec88f dbd663faec1f0175619cf7668bddc6350548b8d6 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000
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150 // head, root, first parent, second parent
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151 //
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152 // TODO implement this with remote access
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153 //
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154 RemoteBranch rb = new RemoteBranch();
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155 rb.head = unknownRemoteHeads.iterator().next();
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156 rb.root = Nodeid.fromAscii("dbd663faec1f0175619cf7668bddc6350548b8d6".getBytes(), 0, 40);
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157 remoteBranches.add(rb);
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158 }
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159
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160 private static List<Nodeid> remoteBetween(Nodeid nodeid1, Nodeid nodeid2, List<Nodeid> list) {
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161 // sent: cmd=between&pairs=d6d2a630f4a6d670c90a5ca909150f2b426ec88f-dbd663faec1f0175619cf7668bddc6350548b8d6
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162 // received: a78c980749e3ccebb47138b547e9b644a22797a9 286d221f6c28cbfce25ea314e1f46a23b7f979d3 fc265ddeab262ff5c34b4cf4e2522d8d41f1f05b a3576694a4d1edaa681cab15b89d6b556b02aff4
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163 // 1st, 2nd, fourth and eights of total 8 changes between rev9 and rev0
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164 //
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165 //
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166 // a78c980749e3ccebb47138b547e9b644a22797a9 286d221f6c28cbfce25ea314e1f46a23b7f979d3 fc265ddeab262ff5c34b4cf4e2522d8d41f1f05b a3576694a4d1edaa681cab15b89d6b556b02aff4
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167 //d6d2a630f4a6d670c90a5ca909150f2b426ec88f a78c980749e3ccebb47138b547e9b644a22797a9 5abe5af181bd6a6d3e94c378376c901f0f80da50 08db726a0fb7914ac9d27ba26dc8bbf6385a0554
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168
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169 // TODO implement with remote access
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170 String response = null;
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171 if (nodeid1.equals(Nodeid.fromAscii("382cfe9463db0484a14136e4b38407419525f0c0".getBytes(), 0, 40)) && nodeid2.equals(Nodeid.fromAscii("dbd663faec1f0175619cf7668bddc6350548b8d6".getBytes(), 0, 40))) {
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172 response = "d6d2a630f4a6d670c90a5ca909150f2b426ec88f a78c980749e3ccebb47138b547e9b644a22797a9 5abe5af181bd6a6d3e94c378376c901f0f80da50 08db726a0fb7914ac9d27ba26dc8bbf6385a0554";
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173 } else if (nodeid1.equals(Nodeid.fromAscii("a78c980749e3ccebb47138b547e9b644a22797a9".getBytes(), 0, 40)) && nodeid2.equals(Nodeid.fromAscii("5abe5af181bd6a6d3e94c378376c901f0f80da50".getBytes(), 0, 40))) {
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174 response = "286d221f6c28cbfce25ea314e1f46a23b7f979d3";
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175 }
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176 if (response == null) {
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177 throw HgRepository.notImplemented();
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178 }
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179 for (String s : response.split(" ")) {
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180 list.add(Nodeid.fromAscii(s.getBytes(), 0, 40));
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181 }
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182 return list;
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183 }
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184
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185 }