Examples of PackWriter

org.eclipse.jgit.internal.storage.pack.PackWriter
PackWriter class is responsible for generating pack files from specified set of objects from repository. This implementation produce pack files in format version 2.

Source of objects may be specified in two ways:
- (usually) by providing sets of interesting and uninteresting objects in repository - all interesting objects and their ancestors except uninteresting objects and their ancestors will be included in pack, or
- by providing iterator of {@link RevObject} specifying exact list andorder of objects in pack
Typical usage consists of creating instance intended for some pack, configuring options, preparing the list of objects by calling {@link #preparePack(Iterator)} or{@link #preparePack(ProgressMonitor,Collection,Collection)}, and finally producing the stream with {@link #writePack(ProgressMonitor,ProgressMonitor,OutputStream)}.

Class provide set of configurable options and {@link ProgressMonitor}support, as operations may take a long time for big repositories. Deltas searching algorithm is NOT IMPLEMENTED yet - this implementation relies only on deltas and objects reuse.

This class is not thread safe, it is intended to be used in one thread, with one instance per created pack. Subsequent calls to writePack result in undefined behavior.
org.eclipse.jgit.storage.pack.PackWriter
PackWriter class is responsible for generating pack files from specified set of objects from repository. This implementation produce pack files in format version 2.

Source of objects may be specified in two ways:
- (usually) by providing sets of interesting and uninteresting objects in repository - all interesting objects and their ancestors except uninteresting objects and their ancestors will be included in pack, or
- by providing iterator of {@link RevObject} specifying exact list andorder of objects in pack
Typical usage consists of creating instance intended for some pack, configuring options, preparing the list of objects by calling {@link #preparePack(Iterator)} or{@link #preparePack(ProgressMonitor,Collection,Collection)}, and finally producing the stream with {@link #writePack(ProgressMonitor,ProgressMonitor,OutputStream)}.

Class provide set of configurable options and {@link ProgressMonitor}support, as operations may take a long time for big repositories. Deltas searching algorithm is NOT IMPLEMENTED yet - this implementation relies only on deltas and objects reuse.

This class is not thread safe, it is intended to be used in one thread, with one instance per created pack. Subsequent calls to writePack result in undefined behavior.

Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

    // different pack under the same file name is partially broken. We
    // should also have a different file name because the list of objects
    // within the pack has been modified.
    //
    final RevObject o2 = writeBlob(eden, "o2");
    final PackWriter pw = new PackWriter(eden);
    pw.addObject(o2);
    pw.addObject(o1);
    write(out1, pw);
    pw.release();


    // Try the old name, then the new name. The old name should cause the
    // pack to reload when it opens and the index and pack mismatch.
    //
    assertEquals(o1.name(), parse(o1).name());

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

    return new RevWalk(db).parseAny(id);
  }


  private File[] pack(final Repository src, final RevObject... list)
      throws IOException {
    final PackWriter pw = new PackWriter(src);
    for (final RevObject o : list) {
      pw.addObject(o);
    }


    final ObjectId name = pw.computeName();
    final File packFile = fullPackFileName(name, ".pack");
    final File idxFile = fullPackFileName(name, ".idx");
    final File[] files = new File[] { packFile, idxFile };
    write(files, pw);
    pw.release();
    return files;
  }

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

      pc.setIndexVersion(2);
      pc.setDeltaCompress(false);
      pc.setReuseDeltas(true);
      pc.setReuseObjects(true);


      PackWriter pw = new PackWriter(pc, ctx);
      try {
        pw.setDeltaBaseAsOffset(true);
        pw.setReuseDeltaCommits(false);


        addObjectsToPack(pw, ctx, pm);
        if (pw.getObjectCount() == 0) {
          List<DfsPackDescription> remove = toPrune();
          if (remove.size() > 0)
            objdb.commitPack(
                Collections.<DfsPackDescription>emptyList(),
                remove);
          return;
        }


        boolean rollback = true;
        DfsPackDescription pack = objdb.newPack(COMPACT);
        try {
          writePack(objdb, pack, pw, pm);
          writeIndex(objdb, pack, pw);


          PackWriter.Statistics stats = pw.getStatistics();
          pw.release();
          pw = null;


          pack.setPackStats(stats);
          objdb.commitPack(Collections.singletonList(pack), toPrune());
          newPacks.add(pack);
          newStats.add(stats);
          rollback = false;
        } finally {
          if (rollback)
            objdb.rollbackPack(Collections.singletonList(pack));
        }
      } finally {
        if (pw != null)
          pw.release();
      }
    } finally {
      rw = null;
      ctx.release();
    }

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

    if (db.getObjectDatabase() instanceof ObjectDirectory) {
      ObjectDirectory odb = (ObjectDirectory) db.getObjectDatabase();
      NullProgressMonitor m = NullProgressMonitor.INSTANCE;


      final File pack, idx;
      PackWriter pw = new PackWriter(db);
      try {
        Set<ObjectId> all = new HashSet<ObjectId>();
        for (Ref r : db.getAllRefs().values())
          all.add(r.getObjectId());
        pw.preparePack(m, all, Collections.<ObjectId> emptySet());


        final ObjectId name = pw.computeName();
        OutputStream out;


        pack = nameFor(odb, name, ".pack");
        out = new SafeBufferedOutputStream(new FileOutputStream(pack));
        try {
          pw.writePack(m, m, out);
        } finally {
          out.close();
        }
        pack.setReadOnly();


        idx = nameFor(odb, name, ".idx");
        out = new SafeBufferedOutputStream(new FileOutputStream(idx));
        try {
          pw.writeIndex(out);
        } finally {
          out.close();
        }
        idx.setReadOnly();
      } finally {
        pw.release();
      }


      odb.openPack(pack);
      updateServerInfo();
      prunePacked(odb);

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

   *
   * @throws IOException
   */
  @Test
  public void testContructor() throws IOException {
    writer = new PackWriter(config, db.newObjectReader());
    assertFalse(writer.isDeltaBaseAsOffset());
    assertTrue(config.isReuseDeltas());
    assertTrue(config.isReuseObjects());
    assertEquals(0, writer.getObjectCount());
  }

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

    config.setDeltaBaseAsOffset(false);
    assertFalse(config.isReuseDeltas());
    assertFalse(config.isReuseObjects());
    assertFalse(config.isDeltaBaseAsOffset());


    writer = new PackWriter(config, db.newObjectReader());
    writer.setDeltaBaseAsOffset(true);
    assertTrue(writer.isDeltaBaseAsOffset());
    assertFalse(config.isDeltaBaseAsOffset());
  }

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

  }


  private static PackIndex writePack(FileRepository repo,
      Set<? extends ObjectId> want, Set<ObjectIdSet> excludeObjects)
      throws IOException {
    PackWriter pw = new PackWriter(repo);
    pw.setDeltaBaseAsOffset(true);
    pw.setReuseDeltaCommits(false);
    for (ObjectIdSet idx : excludeObjects)
      pw.excludeObjects(idx);
    pw.preparePack(NullProgressMonitor.INSTANCE, want,
        Collections.<ObjectId> emptySet());
    String id = pw.computeName().getName();
    File packdir = new File(repo.getObjectsDirectory(), "pack");
    File packFile = new File(packdir, "pack-" + id + ".pack");
    FileOutputStream packOS = new FileOutputStream(packFile);
    pw.writePack(NullProgressMonitor.INSTANCE,
        NullProgressMonitor.INSTANCE, packOS);
    packOS.close();
    File idxFile = new File(packdir, "pack-" + id + ".idx");
    FileOutputStream idxOS = new FileOutputStream(idxFile);
    pw.writeIndex(idxOS);
    idxOS.close();
    pw.release();
    return PackIndex.open(idxFile);
  }

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

  private void createVerifyOpenPack(final Set<ObjectId> interestings,
      final Set<ObjectId> uninterestings, final boolean thin,
      final boolean ignoreMissingUninteresting, boolean useBitmaps)
      throws MissingObjectException, IOException {
    NullProgressMonitor m = NullProgressMonitor.INSTANCE;
    writer = new PackWriter(config, db.newObjectReader());
    writer.setUseBitmaps(useBitmaps);
    writer.setThin(thin);
    writer.setIgnoreMissingUninteresting(ignoreMissingUninteresting);
    writer.preparePack(m, interestings, uninterestings);
    writer.writePack(m, m, os);

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

  }


  private void createVerifyOpenPack(final List<RevObject> objectSource)
      throws MissingObjectException, IOException {
    NullProgressMonitor m = NullProgressMonitor.INSTANCE;
    writer = new PackWriter(config, db.newObjectReader());
    writer.preparePack(objectSource.iterator());
    assertEquals(objectSource.size(), writer.getObjectCount());
    writer.writePack(m, m, os);
    writer.release();
    verifyOpenPack(false);

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Examples of org.eclipse.jgit.internal.storage.pack.PackWriter

      throws IOException, MissingObjectException,
      StoredObjectRepresentationNotAvailableException {
    ObjectReuseAsIs asis = (ObjectReuseAsIs) reader;
    ObjectToPack target = asis.newObjectToPack(obj, obj.getType());


    PackWriter pw = new PackWriter(reader) {
      @Override
      public void select(ObjectToPack otp, StoredObjectRepresentation next) {
        otp.select(next);
      }
    };

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