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annotate src/com/tmate/hgkit/console/Outgoing.java @ 69:5a69397f0f99

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Discovery utility for Hg network protocol finally in the repo, with quick-n-dirty ConfigFile impl that helps to hide auth info
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Sat, 22 Jan 2011 22:53:57 +0100
parents de7217a0aa4d
children
rev   line source
30
de7217a0aa4d Look up changes in the local repo that are not in the remote
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1 /*
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2 * Copyright (c) 2011 Artem Tikhomirov
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3 */
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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.LinkedHashSet;
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8 import java.util.LinkedList;
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9 import java.util.List;
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10
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11 import com.tmate.hgkit.fs.RepositoryLookup;
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12 import com.tmate.hgkit.ll.HgRepository;
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13 import com.tmate.hgkit.ll.Nodeid;
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14 import com.tmate.hgkit.ll.Revlog;
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15
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16 /**
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17 * hg out
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18 * @author artem
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19 */
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20 public class Outgoing {
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21
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22 public static void main(String[] args) throws Exception {
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23 RepositoryLookup repoLookup = new RepositoryLookup();
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24 RepositoryLookup.Options cmdLineOpts = RepositoryLookup.Options.parse(args);
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25 HgRepository hgRepo = repoLookup.detect(cmdLineOpts);
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26 if (hgRepo.isInvalid()) {
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27 System.err.printf("Can't find repository in: %s\n", hgRepo.getLocation());
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28 return;
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29 }
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30 // FIXME detection of
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31 List<Nodeid> base = new LinkedList<Nodeid>();
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32 base.add(Nodeid.fromAscii("d6d2a630f4a6d670c90a5ca909150f2b426ec88f".getBytes(), 0, 40));
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33 //
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34 // fill with all known
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35 Revlog.ParentWalker pw = hgRepo.getChangelog().new ParentWalker();
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36 pw.init();
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37 LinkedHashSet<Nodeid> sendToRemote = new LinkedHashSet<Nodeid>(pw.allNodes());
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38 dump("initial state", sendToRemote);
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39 // remove base and its parents
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40 LinkedList<Nodeid> queueToClean = new LinkedList<Nodeid>(base);
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41 while (!queueToClean.isEmpty()) {
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42 Nodeid nid = queueToClean.removeFirst();
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43 if (sendToRemote.remove(nid)) {
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44 pw.appendParentsOf(nid, queueToClean);
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45 }
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46 }
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47 dump("Clean from known parents", sendToRemote);
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48 // XXX I think sendToRemote is what we actually need here - everything local, missing from remote
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49 // however, if we need to send only a subset of these, need to proceed.
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50 LinkedList<Nodeid> result = new LinkedList<Nodeid>();
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51 // find among left those without parents
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52 for (Nodeid nid : sendToRemote) {
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53 Nodeid p1 = pw.firstParent(nid);
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54 // in fact, we may assume nulls are never part of sendToRemote
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55 if (p1 != null && !sendToRemote.contains(p1)) {
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56 Nodeid p2 = pw.secondParent(nid);
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57 if (p2 == null || !sendToRemote.contains(p2)) {
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58 result.add(nid);
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59 }
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60 }
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61 }
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62 dump("Result", result);
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63 // final outcome is the collection of nodes between(lastresult and revision/tip)
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64 //
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65 System.out.println("TODO: nodes between result and tip");
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66 }
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67
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68 private static void dump(String s, Collection<Nodeid> c) {
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69 System.out.println(s);
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70 for (Nodeid n : c) {
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71 System.out.println(n);
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72 }
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73 }
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74 }