Examples of org.eclipse.jgit.internal.storage.file.PackIndex

Package org.eclipse.jgit.internal.storage.file

Examples of org.eclipse.jgit.internal.storage.file.PackIndex

org.eclipse.jgit.internal.storage.file.PackIndex
Access path to locate objects by {@link ObjectId} in a {@link PackFile}.
Indexes are strictly redundant information in that we can rebuild all of the data held in the index file from the on disk representation of the pack file itself, but it is faster to access for random requests because data is stored by ObjectId.

    pw.setReuseDeltaCommits(true);
    try {
      RevWalk pool = new RevWalk(ctx);
      pm.beginTask("Finding garbage", objectsBefore());
      for (DfsPackFile oldPack : packsBefore) {
        PackIndex oldIdx = oldPack.getPackIndex(ctx);
        for (PackIndex.MutableEntry ent : oldIdx) {
          pm.update(1);
          ObjectId id = ent.toObjectId();
          if (pool.lookupOrNull(id) != null || anyPackHas(id))
            continue;

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  }


  private List<DfsObjectToPack> findAllFromPack(DfsPackFile pack,
      Iterable<ObjectToPack> objects) throws IOException {
    List<DfsObjectToPack> tmp = new BlockList<DfsObjectToPack>();
    PackIndex idx = pack.getPackIndex(this);
    for (ObjectToPack otp : objects) {
      long p = idx.findOffset(otp);
      if (0 < p) {
        otp.setOffset(p);
        tmp.add((DfsObjectToPack) otp);
      }
    }

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    packOut.close();
    packOut = null;


    sortObjectsById();


    PackIndex index = writePackIndex(packDsc, packHash, objectList);
    db.commitPack(Collections.singletonList(packDsc), null);
    rollback = false;


    DfsPackFile p = cache.getOrCreate(packDsc, packKey);
    if (index != null)

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    // If there are less than 58,000 objects, the entire index fits in under
    // 2 MiB. Callers will probably need the index immediately, so buffer
    // the index in process and load from the buffer.
    TemporaryBuffer.Heap buf = null;
    PackIndex packIndex = null;
    if (list.size() <= 58000) {
      buf = new TemporaryBuffer.Heap(2 << 20);
      index(buf, packHash, list);
      packIndex = PackIndex.read(buf.openInputStream());
    }

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   * @return {@code this}.
   * @throws IOException
   *             pack index cannot be loaded.
   */
  public DfsPackCompactor exclude(DfsPackFile pack) throws IOException {
    final PackIndex idx;
    DfsReader ctx = (DfsReader) repo.newObjectReader();
    try {
      idx = pack.getPackIndex(ctx);
    } finally {
      ctx.release();
    }
    return exclude(new PackWriter.ObjectIdSet() {
      public boolean contains(AnyObjectId id) {
        return idx.hasObject(id);
      }
    });
  }

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    pm.endTask();
  }


  private List<ObjectIdWithOffset> toInclude(DfsPackFile src, DfsReader ctx)
      throws IOException {
    PackIndex srcIdx = src.getPackIndex(ctx);
    List<ObjectIdWithOffset> want = new BlockList<ObjectIdWithOffset>(
        (int) srcIdx.getObjectCount());
    SCAN: for (PackIndex.MutableEntry ent : srcIdx) {
      ObjectId id = ent.toObjectId();
      RevObject obj = rw.lookupOrNull(id);
      if (obj != null && (obj.has(added) || obj.has(isBase)))
        continue;

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  }


  private PackIndex idx(DfsReader ctx) throws IOException {
    DfsBlockCache.Ref<PackIndex> idxref = index;
    if (idxref != null) {
      PackIndex idx = idxref.get();
      if (idx != null)
        return idx;
    }


    if (invalid)
      throw new PackInvalidException(getPackName());


    Repository.getGlobalListenerList()
        .dispatch(new BeforeDfsPackIndexLoadedEvent(this));


    synchronized (initLock) {
      idxref = index;
      if (idxref != null) {
        PackIndex idx = idxref.get();
        if (idx != null)
          return idx;
      }


      PackIndex idx;
      try {
        ReadableChannel rc = ctx.db.openFile(packDesc, INDEX);
        try {
          InputStream in = Channels.newInputStream(rc);
          int wantSize = 8192;

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        PackReverseIndex revidx = revref.get();
        if (revidx != null)
          return revidx;
      }


      PackIndex idx = idx(ctx);
      PackReverseIndex revidx = new PackReverseIndex(idx);
      int sz = (int) Math.min(
          idx.getObjectCount() * 8, Integer.MAX_VALUE);
      reverseIndex = cache.put(key, POS_REVERSE_INDEX, sz, revidx);
      return revidx;
    }
  }

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  }


  private List<DfsObjectToPack> findAllFromPack(DfsPackFile pack,
      Iterable<ObjectToPack> objects) throws IOException {
    List<DfsObjectToPack> tmp = new BlockList<DfsObjectToPack>();
    PackIndex idx = pack.getPackIndex(this);
    for (ObjectToPack otp : objects) {
      long p = idx.findOffset(otp);
      if (0 < p) {
        otp.setOffset(p);
        tmp.add((DfsObjectToPack) otp);
      }
    }

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  }


  private PackIndex idx(DfsReader ctx) throws IOException {
    DfsBlockCache.Ref<PackIndex> idxref = index;
    if (idxref != null) {
      PackIndex idx = idxref.get();
      if (idx != null)
        return idx;
    }


    if (invalid)
      throw new PackInvalidException(getPackName());


    Repository.getGlobalListenerList()
        .dispatch(new BeforeDfsPackIndexLoadedEvent(this));


    synchronized (initLock) {
      idxref = index;
      if (idxref != null) {
        PackIndex idx = idxref.get();
        if (idx != null)
          return idx;
      }


      PackIndex idx;
      try {
        ReadableChannel rc = ctx.db.openFile(packDesc, INDEX);
        try {
          InputStream in = Channels.newInputStream(rc);
          int wantSize = 8192;

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org.eclipse.jgit.internal.storage.dfs.DfsGarbageCollector

org.eclipse.jgit.internal.storage.dfs.DfsInserter

org.eclipse.jgit.internal.storage.dfs.DfsPackCompactor

org.eclipse.jgit.internal.storage.dfs.DfsPackFile

org.eclipse.jgit.internal.storage.dfs.DfsReader

java.io.FileInputStream

java.io.IOException

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