Esempio n. 1
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func (d *Data) GetKeysInRange(ctx storage.Context, keyBeg, keyEnd string) ([]string, error) {
	db, err := storage.BigDataStore()
	if err != nil {
		return nil, err
	}

	// Compute first and last key for range
	first, err := NewTKey(keyBeg)
	if err != nil {
		return nil, err
	}
	last, err := NewTKey(keyEnd)
	if err != nil {
		return nil, err
	}
	keys, err := db.KeysInRange(ctx, first, last)
	if err != nil {
		return nil, err
	}
	keyList := []string{}
	for _, key := range keys {
		keyStr, err := DecodeTKey(key)
		if err != nil {
			return nil, err
		}
		keyList = append(keyList, keyStr)
	}
	return keyList, nil
}
Esempio n. 2
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// Returns function that stores a tile as an optionally compressed PNG image.
func (d *Data) putTileFunc(versionID dvid.VersionID) (outFunc, error) {
	bigdata, err := storage.BigDataStore()
	if err != nil {
		return nil, fmt.Errorf("Cannot open big data store: %v\n", err)
	}
	ctx := datastore.NewVersionedCtx(d, versionID)

	return func(index *IndexTile, tile *dvid.Image) error {
		var err error
		var data []byte

		switch d.Encoding {
		case LZ4:
			compression, err := dvid.NewCompression(dvid.LZ4, dvid.DefaultCompression)
			if err != nil {
				return err
			}
			data, err = tile.Serialize(compression, d.Checksum())
		case PNG:
			data, err = tile.GetPNG()
		case JPG:
			data, err = tile.GetJPEG(d.Quality)
		}
		if err != nil {
			return err
		}
		return bigdata.Put(ctx, index.Bytes(), data)
	}, nil
}
Esempio n. 3
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// Loads blocks with old data if they exist.
func (d *Data) loadOldBlocks(v dvid.VersionID, vox *Voxels, blocks storage.TKeyValues) error {
	store, err := storage.BigDataStore()
	if err != nil {
		return fmt.Errorf("Data type imageblk had error initializing store: %v\n", err)
	}

	ctx := datastore.NewVersionedCtx(d, v)

	// Create a map of old blocks indexed by the index
	oldBlocks := map[dvid.IZYXString]([]byte){}

	// Iterate through index space for this data using ZYX ordering.
	blockSize := d.BlockSize()
	blockNum := 0
	for it, err := vox.IndexIterator(blockSize); err == nil && it.Valid(); it.NextSpan() {
		indexBeg, indexEnd, err := it.IndexSpan()
		if err != nil {
			return err
		}
		begTKey := NewTKey(indexBeg)
		endTKey := NewTKey(indexEnd)

		// Get previous data.
		keyvalues, err := store.GetRange(ctx, begTKey, endTKey)
		if err != nil {
			return err
		}
		for _, kv := range keyvalues {
			indexZYX, err := DecodeTKey(kv.K)
			if err != nil {
				return err
			}
			block, _, err := dvid.DeserializeData(kv.V, true)
			if err != nil {
				return fmt.Errorf("Unable to deserialize block, %s: %v", ctx, err)
			}
			oldBlocks[indexZYX.ToIZYXString()] = block
		}

		// Load previous data into blocks
		ptBeg := indexBeg.Duplicate().(dvid.ChunkIndexer)
		ptEnd := indexEnd.Duplicate().(dvid.ChunkIndexer)
		begX := ptBeg.Value(0)
		endX := ptEnd.Value(0)
		c := dvid.ChunkPoint3d{begX, ptBeg.Value(1), ptBeg.Value(2)}
		for x := begX; x <= endX; x++ {
			c[0] = x
			curIndex := dvid.IndexZYX(c)
			curTKey := NewTKey(&curIndex)
			blocks[blockNum].K = curTKey
			block, ok := oldBlocks[curIndex.ToIZYXString()]
			if ok {
				copy(blocks[blockNum].V, block)
			}
			blockNum++
		}
	}
	return nil
}
Esempio n. 4
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// GetVoxels copies voxels from the storage engine to Voxels, a requested subvolume or 2d image.
func (d *Data) GetVoxels(v dvid.VersionID, vox *Voxels, r *ROI) error {
	timedLog := dvid.NewTimeLog()
	defer timedLog.Infof("GetVoxels %s", vox)

	store, err := storage.BigDataStore()
	if err != nil {
		return fmt.Errorf("Data type imageblk had error initializing store: %v\n", err)
	}

	// Only do one request at a time, although each request can start many goroutines.
	server.SpawnGoroutineMutex.Lock()
	defer server.SpawnGoroutineMutex.Unlock()

	ctx := datastore.NewVersionedCtx(d, v)

	wg := new(sync.WaitGroup)
	for it, err := vox.IndexIterator(d.BlockSize()); err == nil && it.Valid(); it.NextSpan() {
		indexBeg, indexEnd, err := it.IndexSpan()
		if err != nil {
			return err
		}
		begTKey := NewTKey(indexBeg)
		endTKey := NewTKey(indexEnd)

		// Get set of blocks in ROI if ROI provided
		var chunkOp *storage.ChunkOp
		if r != nil && r.Iter != nil {
			ptBeg := indexBeg.Duplicate().(dvid.ChunkIndexer)
			ptEnd := indexEnd.Duplicate().(dvid.ChunkIndexer)
			begX := ptBeg.Value(0)
			endX := ptEnd.Value(0)

			blocksInROI := make(map[string]bool, (endX - begX + 1))
			c := dvid.ChunkPoint3d{begX, ptBeg.Value(1), ptBeg.Value(2)}
			for x := begX; x <= endX; x++ {
				c[0] = x
				curIndex := dvid.IndexZYX(c)
				if r.Iter.InsideFast(curIndex) {
					indexString := string(curIndex.Bytes())
					blocksInROI[indexString] = true
				}
			}
			chunkOp = &storage.ChunkOp{&getOperation{vox, blocksInROI, r.attenuation}, wg}
		} else {
			chunkOp = &storage.ChunkOp{&getOperation{vox, nil, 0}, wg}
		}

		// Send the entire range of key-value pairs to chunk processor
		err = store.ProcessRange(ctx, begTKey, endTKey, chunkOp, storage.ChunkFunc(d.ReadChunk))
		if err != nil {
			return fmt.Errorf("Unable to GET data %s: %v", ctx, err)
		}
	}
	if err != nil {
		return err
	}
	wg.Wait()
	return nil
}
Esempio n. 5
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// GetBlocks returns a slice of bytes corresponding to all the blocks along a span in X
func (d *Data) GetBlocks(v dvid.VersionID, start dvid.ChunkPoint3d, span int) ([]byte, error) {
	store, err := storage.BigDataStore()
	if err != nil {
		return nil, fmt.Errorf("Data type imageblk had error initializing store: %v\n", err)
	}

	indexBeg := dvid.IndexZYX(start)
	end := start
	end[0] += int32(span - 1)
	indexEnd := dvid.IndexZYX(end)
	begTKey := NewTKey(&indexBeg)
	endTKey := NewTKey(&indexEnd)

	ctx := datastore.NewVersionedCtx(d, v)

	iv := dvid.InstanceVersion{d.DataName(), v}
	mapping := labels.MergeCache.LabelMap(iv)

	keyvalues, err := store.GetRange(ctx, begTKey, endTKey)
	if err != nil {
		return nil, err
	}

	var buf bytes.Buffer

	// Save the # of keyvalues actually obtained.
	numkv := len(keyvalues)
	binary.Write(&buf, binary.LittleEndian, int32(numkv))

	// Write the block indices in XYZ little-endian format + the size of each block
	uncompress := true
	for _, kv := range keyvalues {
		block, _, err := dvid.DeserializeData(kv.V, uncompress)
		if err != nil {
			return nil, fmt.Errorf("Unable to deserialize block, %s (%v): %v", ctx, kv.K, err)
		}
		if mapping != nil {
			n := len(block) / 8
			for i := 0; i < n; i++ {
				orig := binary.LittleEndian.Uint64(block[i*8 : i*8+8])
				mapped, found := mapping.FinalLabel(orig)
				if !found {
					mapped = orig
				}
				binary.LittleEndian.PutUint64(block[i*8:i*8+8], mapped)
			}
		}

		_, err = buf.Write(block)
		if err != nil {
			return nil, err
		}
	}

	return buf.Bytes(), nil
}
Esempio n. 6
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// Goroutine that handles relabeling of blocks during a merge operation.
// Since the same block coordinate always gets mapped to the same goroutine, we handle
// concurrency by serializing GET/PUT for a particular block coordinate.
func (d *Data) mergeBlock(in <-chan mergeOp) {
	store, err := storage.BigDataStore()
	if err != nil {
		dvid.Errorf("Data type labelblk had error initializing store: %v\n", err)
		return
	}
	blockBytes := int(d.BlockSize().Prod() * 8)

	for op := range in {
		tk := NewTKeyByCoord(op.izyx)
		data, err := store.Get(op.ctx, tk)
		if err != nil {
			dvid.Errorf("Error on GET of labelblk with coord string %q\n", op.izyx)
			op.wg.Done()
			continue
		}
		if data == nil {
			dvid.Errorf("nil label block where merge was done!\n")
			op.wg.Done()
			continue
		}

		blockData, _, err := dvid.DeserializeData(data, true)
		if err != nil {
			dvid.Criticalf("unable to deserialize label block in '%s': %v\n", d.DataName(), err)
			op.wg.Done()
			continue
		}
		if len(blockData) != blockBytes {
			dvid.Criticalf("After labelblk deserialization got back %d bytes, expected %d bytes\n", len(blockData), blockBytes)
			op.wg.Done()
			continue
		}

		// Iterate through this block of labels and relabel if label in merge.
		for i := 0; i < blockBytes; i += 8 {
			label := binary.LittleEndian.Uint64(blockData[i : i+8])
			if _, merged := op.Merged[label]; merged {
				binary.LittleEndian.PutUint64(blockData[i:i+8], op.Target)
			}
		}

		// Store this block.
		serialization, err := dvid.SerializeData(blockData, d.Compression(), d.Checksum())
		if err != nil {
			dvid.Criticalf("Unable to serialize block in %q: %v\n", d.DataName(), err)
			op.wg.Done()
			continue
		}
		if err := store.Put(op.ctx, tk, serialization); err != nil {
			dvid.Errorf("Error in putting key %v: %v\n", tk, err)
		}
		op.wg.Done()
	}
}
Esempio n. 7
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// DeleteData deletes a key-value pair
func (d *Data) DeleteData(ctx storage.Context, keyStr string) error {
	db, err := storage.BigDataStore()
	if err != nil {
		return err
	}
	tk, err := NewTKey(keyStr)
	if err != nil {
		return err
	}
	return db.Delete(ctx, tk)
}
Esempio n. 8
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// PutData puts a key-value at a given uuid
func (d *Data) PutData(ctx storage.Context, keyStr string, value []byte) error {
	db, err := storage.BigDataStore()
	if err != nil {
		return err
	}
	serialization, err := dvid.SerializeData(value, d.Compression(), d.Checksum())
	if err != nil {
		return fmt.Errorf("Unable to serialize data: %v\n", err)
	}
	tk, err := NewTKey(keyStr)
	if err != nil {
		return err
	}
	return db.Put(ctx, tk, serialization)
}
Esempio n. 9
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// getTileData returns 2d tile data straight from storage without decoding.
func (d *Data) getTileData(ctx storage.Context, shape dvid.DataShape, scaling Scaling, index dvid.IndexZYX) ([]byte, error) {
	if d.Levels == nil {
		return nil, fmt.Errorf("Tiles have not been generated.")
	}
	bigdata, err := storage.BigDataStore()
	if err != nil {
		return nil, err
	}

	// Retrieve the tile data from datastore
	tileIndex := &IndexTile{&index, shape, scaling}
	data, err := bigdata.Get(ctx, tileIndex.Bytes())
	if err != nil {
		return nil, fmt.Errorf("Error trying to GET from datastore: %v", err)
	}
	return data, nil
}
Esempio n. 10
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// GetSurface returns a gzipped byte array with # voxels and float32 arrays for vertices and
// normals.
func GetSurface(ctx storage.Context, label uint64) ([]byte, bool, error) {
	bigdata, err := storage.BigDataStore()
	if err != nil {
		return nil, false, fmt.Errorf("Cannot get datastore that handles big data: %v\n", err)
	}

	// Retrieve the precomputed surface or that it's not available.
	data, err := bigdata.Get(ctx, NewLabelSurfaceIndex(label))
	if err != nil {
		return nil, false, fmt.Errorf("Error in retrieving surface for label %d: %v", label, err)
	}
	if data == nil {
		return []byte{}, false, nil
	}
	uncompress := false
	surfaceBytes, _, err := dvid.DeserializeData(data, uncompress)
	if err != nil {
		return nil, false, fmt.Errorf("Unable to deserialize surface for label %d: %v\n", label, err)
	}
	return surfaceBytes, true, nil
}
Esempio n. 11
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// GetData gets a value using a key
func (d *Data) GetData(ctx storage.Context, keyStr string) ([]byte, bool, error) {
	db, err := storage.BigDataStore()
	if err != nil {
		return nil, false, err
	}
	tk, err := NewTKey(keyStr)
	if err != nil {
		return nil, false, err
	}
	data, err := db.Get(ctx, tk)
	if err != nil {
		return nil, false, fmt.Errorf("Error in retrieving key '%s': %v", keyStr, err)
	}
	if data == nil {
		return nil, false, nil
	}
	uncompress := true
	value, _, err := dvid.DeserializeData(data, uncompress)
	if err != nil {
		return nil, false, fmt.Errorf("Unable to deserialize data for key '%s': %v\n", keyStr, err)
	}
	return value, true, nil
}
Esempio n. 12
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// GetLabelBytesAtPoint returns the 8 byte slice corresponding to a 64-bit label at a point.
func (d *Data) GetLabelBytesAtPoint(v dvid.VersionID, pt dvid.Point) ([]byte, error) {
	store, err := storage.BigDataStore()
	if err != nil {
		return nil, err
	}

	// Compute the block key that contains the given point.
	coord, ok := pt.(dvid.Chunkable)
	if !ok {
		return nil, fmt.Errorf("Can't determine block of point %s", pt)
	}
	blockSize := d.BlockSize()
	blockCoord := coord.Chunk(blockSize).(dvid.ChunkPoint3d)
	index := dvid.IndexZYX(blockCoord)

	// Retrieve the block of labels
	ctx := datastore.NewVersionedCtx(d, v)
	serialization, err := store.Get(ctx, NewTKey(&index))
	if err != nil {
		return nil, fmt.Errorf("Error getting '%s' block for index %s\n", d.DataName(), blockCoord)
	}
	if serialization == nil {
		return zeroLabelBytes, nil
	}
	labelData, _, err := dvid.DeserializeData(serialization, true)
	if err != nil {
		return nil, fmt.Errorf("Unable to deserialize block %s in '%s': %v\n", blockCoord, d.DataName(), err)
	}

	// Retrieve the particular label within the block.
	ptInBlock := coord.PointInChunk(blockSize)
	nx := int64(blockSize.Value(0))
	nxy := nx * int64(blockSize.Value(1))
	i := (int64(ptInBlock.Value(0)) + int64(ptInBlock.Value(1))*nx + int64(ptInBlock.Value(2))*nxy) * 8
	return labelData[i : i+8], nil
}
Esempio n. 13
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func (d *Data) createCompositeChunk(chunk *storage.Chunk) {
	defer func() {
		// After processing a chunk, return the token.
		server.HandlerToken <- 1

		// Notify the requestor that this chunk is done.
		if chunk.Wg != nil {
			chunk.Wg.Done()
		}
	}()

	op := chunk.Op.(*blockOp)

	// Get the spatial index associated with this chunk.
	zyx, err := imageblk.DecodeTKey(chunk.K)
	if err != nil {
		dvid.Errorf("Error in %s.ChunkApplyMap(): %v", d.Data.DataName(), err)
		return
	}

	// Initialize the label buffers.  For voxels, this data needs to be uncompressed and deserialized.
	curZMutex.Lock()
	if zyx[2] > curZ {
		curZ = zyx[2]
		minZ := zyx.MinPoint(d.BlockSize()).Value(2)
		maxZ := zyx.MaxPoint(d.BlockSize()).Value(2)
		dvid.Debugf("Now creating composite blocks for Z %d to %d\n", minZ, maxZ)
	}
	curZMutex.Unlock()

	labelData, _, err := dvid.DeserializeData(chunk.V, true)
	if err != nil {
		dvid.Infof("Unable to deserialize block in '%s': %v\n", d.DataName(), err)
		return
	}
	blockBytes := len(labelData)
	if blockBytes%8 != 0 {
		dvid.Infof("Retrieved, deserialized block is wrong size: %d bytes\n", blockBytes)
		return
	}

	// Get the corresponding grayscale block.
	bigdata, err := storage.BigDataStore()
	if err != nil {
		dvid.Errorf("Unable to retrieve big data store: %s\n", err)
		return
	}
	grayscaleCtx := datastore.NewVersionedCtx(op.grayscale, op.versionID)
	blockData, err := bigdata.Get(grayscaleCtx, chunk.K)
	if err != nil {
		dvid.Errorf("Error getting grayscale block for index %s\n", zyx)
		return
	}
	grayscaleData, _, err := dvid.DeserializeData(blockData, true)
	if err != nil {
		dvid.Errorf("Unable to deserialize block in '%s': %v\n", op.grayscale.DataName(), err)
		return
	}

	// Compute the composite block.
	// TODO -- Exploit run lengths, use cache of hash?
	compositeBytes := blockBytes / 2
	compositeData := make([]byte, compositeBytes, compositeBytes)
	compositeI := 0
	labelI := 0
	hashBuf := make([]byte, 4, 4)
	for _, grayscale := range grayscaleData {
		//murmurhash3(labelData[labelI:labelI+8], hashBuf)
		//hashBuf[3] = grayscale
		writePseudoColor(grayscale, labelData[labelI:labelI+8], hashBuf)
		copy(compositeData[compositeI:compositeI+4], hashBuf)
		compositeI += 4
		labelI += 8
	}

	// Store the composite block into the rgba8 data.
	serialization, err := dvid.SerializeData(compositeData, d.Compression(), d.Checksum())
	if err != nil {
		dvid.Errorf("Unable to serialize composite block %s: %v\n", zyx, err)
		return
	}
	compositeCtx := datastore.NewVersionedCtx(op.composite, op.versionID)
	err = bigdata.Put(compositeCtx, chunk.K, serialization)
	if err != nil {
		dvid.Errorf("Unable to PUT composite block %s: %v\n", zyx, err)
		return
	}
}
Esempio n. 14
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// Calculates value of a 3d real world point in space defined by underlying data resolution.
func (d *Data) computeValue(pt dvid.Vector3d, ctx storage.Context, keyF KeyFunc, cache *ValueCache) ([]byte, error) {
	db, err := storage.BigDataStore()
	if err != nil {
		return nil, err
	}

	valuesPerElement := d.Properties.Values.ValuesPerElement()
	bytesPerValue, err := d.Properties.Values.BytesPerValue()
	if err != nil {
		return nil, err
	}
	bytesPerVoxel := valuesPerElement * bytesPerValue

	// Allocate an empty block.
	blockSize, ok := d.BlockSize().(dvid.Point3d)
	if !ok {
		return nil, fmt.Errorf("Data %q does not have a 3d block size", d.DataName())
	}
	nx := blockSize[0]
	nxy := nx * blockSize[1]
	emptyBlock := d.BackgroundBlock()

	populateF := func(key []byte) ([]byte, error) {
		serializedData, err := db.Get(ctx, key)
		if err != nil {
			return nil, err
		}
		var deserializedData []byte
		if serializedData == nil || len(serializedData) == 0 {
			deserializedData = emptyBlock
		} else {
			deserializedData, _, err = dvid.DeserializeData(serializedData, true)
			if err != nil {
				return nil, fmt.Errorf("Unable to deserialize block: %v", err)
			}
		}
		return deserializedData, nil
	}

	// For the given point, compute surrounding lattice points and retrieve values.
	neighbors := d.neighborhood(pt)
	var valuesI int32
	for _, voxelCoord := range neighbors.coords {
		deserializedData, _, err := cache.Get(keyF(voxelCoord), populateF)
		if err != nil {
			return nil, err
		}
		blockPt := voxelCoord.PointInChunk(blockSize).(dvid.Point3d)
		blockI := blockPt[2]*nxy + blockPt[1]*nx + blockPt[0]
		//fmt.Printf("Block %s (%d) len %d -> Neighbor %s (buffer %d, len %d)\n",
		//	blockPt, blockI, len(blockData), voxelCoord, valuesI, len(neighbors.values))
		copy(neighbors.values[valuesI:valuesI+bytesPerVoxel], deserializedData[blockI:blockI+bytesPerVoxel])
		valuesI += bytesPerVoxel
	}

	// Perform trilinear interpolation on the underlying data values.
	unsupported := func() error {
		return fmt.Errorf("DVID cannot retrieve images with arbitrary orientation using %d channels and %d bytes/channel",
			valuesPerElement, bytesPerValue)
	}
	var value []byte
	switch valuesPerElement {
	case 1:
		switch bytesPerValue {
		case 1:
			if d.Interpolable {
				interpValue := trilinearInterpUint8(neighbors.xd, neighbors.yd, neighbors.zd, []uint8(neighbors.values))
				value = []byte{byte(interpValue)}
			} else {
				value = []byte{nearestNeighborUint8(neighbors.xd, neighbors.yd, neighbors.zd, []uint8(neighbors.values))}
			}
		case 2:
			fallthrough
		case 4:
			fallthrough
		case 8:
			fallthrough
		default:
			return nil, unsupported()
		}
	case 4:
		switch bytesPerValue {
		case 1:
			value = make([]byte, 4, 4)
			for c := 0; c < 4; c++ {
				channelValues := make([]uint8, 8, 8)
				for i := 0; i < 8; i++ {
					channelValues[i] = uint8(neighbors.values[i*4+c])
				}
				if d.Interpolable {
					interpValue := trilinearInterpUint8(neighbors.xd, neighbors.yd, neighbors.zd, channelValues)
					value[c] = byte(interpValue)
				} else {
					value[c] = byte(nearestNeighborUint8(neighbors.xd, neighbors.yd, neighbors.zd, channelValues))
				}
			}
		case 2:
			fallthrough
		default:
			return nil, unsupported()
		}
	default:
	}

	return value, nil
}
Esempio n. 15
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func (d *Data) foregroundROI(v dvid.VersionID, dest *roi.Data, background dvid.PointNd) {
	dest.Ready = false

	store, err := storage.BigDataStore()
	if err != nil {
		dvid.Criticalf("Data type imageblk had error initializing store: %v\n", err)
		return
	}

	timedLog := dvid.NewTimeLog()
	timedLog.Infof("Starting foreground ROI %q for %s", dest.DataName(), d.DataName())

	// Iterate through all voxel blocks, loading and then checking blocks
	// for any foreground voxels.
	ctx := datastore.NewVersionedCtx(d, v)

	backgroundBytes := make([]byte, len(background))
	for i, b := range background {
		backgroundBytes[i] = byte(b)
	}

	const BATCH_SIZE = 1000
	var numBatches int
	var span *dvid.Span
	spans := []dvid.Span{}

	var f storage.ChunkFunc = func(chunk *storage.Chunk) error {
		if chunk == nil || chunk.V == nil {
			return nil
		}
		data, _, err := dvid.DeserializeData(chunk.V, true)
		if err != nil {
			return fmt.Errorf("Error decoding block: %v\n", err)
		}
		numVoxels := d.BlockSize().Prod()
		var foreground bool
		for i := int64(0); i < numVoxels; i++ {
			isBackground := false
			for _, b := range backgroundBytes {
				if data[i] == b {
					isBackground = true
					break
				}
			}
			if !isBackground {
				foreground = true
				break
			}
		}
		if foreground {
			indexZYX, err := DecodeTKey(chunk.K)
			if err != nil {
				return fmt.Errorf("Error decoding voxel block key: %v\n", err)
			}
			x, y, z := indexZYX.Unpack()
			if span == nil {
				span = &dvid.Span{z, y, x, x}
			} else if !span.Extends(x, y, z) {
				spans = append(spans, *span)
				if len(spans) >= BATCH_SIZE {
					init := (numBatches == 0)
					numBatches++
					go func(spans []dvid.Span) {
						if err := dest.PutSpans(v, spans, init); err != nil {
							dvid.Errorf("Error in storing ROI: %v\n", err)
						} else {
							timedLog.Debugf("-- Wrote batch %d of spans for foreground ROI %q", numBatches, dest.DataName())
						}
					}(spans)
					spans = []dvid.Span{}
				}
				span = &dvid.Span{z, y, x, x}
			}
		}
		server.BlockOnInteractiveRequests("voxels [compute foreground ROI]")
		return nil
	}

	minTKey := storage.MinTKey(keyImageBlock)
	maxTKey := storage.MaxTKey(keyImageBlock)

	err = store.ProcessRange(ctx, minTKey, maxTKey, &storage.ChunkOp{}, f)
	if err != nil {
		dvid.Errorf("Error in processing chunks in ROI: %v\n", err)
		return
	}
	if span != nil {
		spans = append(spans, *span)
	}

	// Save new ROI
	if len(spans) > 0 {
		if err := dest.PutSpans(v, spans, numBatches == 0); err != nil {
			dvid.Errorf("Error in storing ROI: %v\n", err)
			return
		}
	}
	timedLog.Infof("Created foreground ROI %q for %s", dest.DataName(), d.DataName())
	dest.Ready = true
}
Esempio n. 16
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// Goroutine that handles splits across a lot of blocks for one label.
func (d *Data) splitBlock(in <-chan splitOp) {
	store, err := storage.BigDataStore()
	if err != nil {
		dvid.Errorf("Data type labelblk had error initializing store: %v\n", err)
		return
	}
	batcher, ok := store.(storage.KeyValueBatcher)
	if !ok {
		err = fmt.Errorf("Data type labelblk requires batch-enabled store, which %q is not\n", store)
		return
	}
	blockBytes := int(d.BlockSize().Prod() * 8)

	for op := range in {
		// Iterate through all the modified blocks, inserting the new label using the RLEs for that block.
		timedLog := dvid.NewTimeLog()
		splitCache.Incr(op.ctx.InstanceVersion(), op.OldLabel)
		batch := batcher.NewBatch(&op.ctx)
		for _, zyxStr := range op.SortedBlocks {
			// Read the block.
			tk := NewTKeyByCoord(zyxStr)
			data, err := store.Get(&op.ctx, tk)
			if err != nil {
				dvid.Errorf("Error on GET of labelblk with coord string %v\n", []byte(zyxStr))
				continue
			}
			if data == nil {
				dvid.Errorf("nil label block where split was done, coord %v\n", []byte(zyxStr))
				continue
			}
			bdata, _, err := dvid.DeserializeData(data, true)
			if err != nil {
				dvid.Criticalf("unable to deserialize label block in '%s' key %v: %v\n", d.DataName(), []byte(zyxStr), err)
				continue
			}
			if len(bdata) != blockBytes {
				dvid.Criticalf("splitBlock: coord %v got back %d bytes, expected %d bytes\n", []byte(zyxStr), len(bdata), blockBytes)
				continue
			}

			// Modify the block.
			rles, found := op.Split[zyxStr]
			if !found {
				dvid.Errorf("split block %v not present in block RLEs\n", []byte(zyxStr))
				continue
			}
			if err := d.storeRLEs(zyxStr, bdata, op.NewLabel, rles); err != nil {
				dvid.Errorf("can't store RLEs into block %v\n", []byte(zyxStr))
				continue
			}

			// Write the modified block.
			serialization, err := dvid.SerializeData(bdata, d.Compression(), d.Checksum())
			if err != nil {
				dvid.Criticalf("Unable to serialize block in %q: %v\n", d.DataName(), err)
				continue
			}
			batch.Put(tk, serialization)
		}
		if err := batch.Commit(); err != nil {
			dvid.Errorf("Batch PUT during %q block split of %d: %v\n", d.DataName(), op.OldLabel, err)
		}
		splitCache.Decr(op.ctx.InstanceVersion(), op.OldLabel)
		timedLog.Debugf("labelblk sync complete for split of %d -> %d", op.OldLabel, op.NewLabel)
	}
}
Esempio n. 17
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// GetBlocks returns a slice of bytes corresponding to all the blocks along a span in X
func (d *Data) GetBlocks(v dvid.VersionID, start dvid.ChunkPoint3d, span int32) ([]byte, error) {
	timedLog := dvid.NewTimeLog()
	defer timedLog.Infof("GetBlocks %s, span %d", start, span)

	store, err := storage.BigDataStore()
	if err != nil {
		return nil, fmt.Errorf("Data type imageblk had error initializing store: %v\n", err)
	}

	indexBeg := dvid.IndexZYX(start)
	sx, sy, sz := indexBeg.Unpack()

	end := start
	end[0] += int32(span - 1)
	indexEnd := dvid.IndexZYX(end)
	keyBeg := NewTKey(&indexBeg)
	keyEnd := NewTKey(&indexEnd)

	// Allocate one uncompressed-sized slice with background values.
	blockBytes := int32(d.BlockSize().Prod()) * d.Values.BytesPerElement()
	numBytes := blockBytes * span

	buf := make([]byte, numBytes, numBytes)
	if d.Background != 0 {
		for i := range buf {
			buf[i] = byte(d.Background)
		}
	}

	// Write the blocks that we can get concurrently on this byte slice.
	ctx := datastore.NewVersionedCtx(d, v)

	var wg sync.WaitGroup
	err = store.ProcessRange(ctx, keyBeg, keyEnd, &storage.ChunkOp{}, func(c *storage.Chunk) error {
		if c == nil || c.TKeyValue == nil {
			return nil
		}
		kv := c.TKeyValue
		if kv.V == nil {
			return nil
		}

		// Determine which block this is.
		indexZYX, err := DecodeTKey(kv.K)
		if err != nil {
			return err
		}
		x, y, z := indexZYX.Unpack()
		if z != sz || y != sy || x < sx || x >= sx+int32(span) {
			return fmt.Errorf("Received key-value for %s, not supposed to be within span range %s, length %d", *indexZYX, start, span)
		}
		n := x - sx
		i := n * blockBytes
		j := i + blockBytes

		// Spawn goroutine to transfer data
		wg.Add(1)
		go xferBlock(buf[i:j], c, &wg)
		return nil
	})
	if err != nil {
		return nil, err
	}
	wg.Wait()
	return buf, nil
}
Esempio n. 18
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// TODO -- Clean up all the writing and simplify now that we have block-aligned writes.
// writeBlocks persists blocks of voxel data asynchronously using batch writes.
func (d *Data) writeBlocks(v dvid.VersionID, b storage.TKeyValues, wg1, wg2 *sync.WaitGroup) error {
	store, err := storage.BigDataStore()
	if err != nil {
		return fmt.Errorf("Data type imageblk had error initializing store: %v\n", err)
	}
	batcher, ok := store.(storage.KeyValueBatcher)
	if !ok {
		return fmt.Errorf("Data type imageblk requires batch-enabled store, which %q is not\n", store)
	}

	preCompress, postCompress := 0, 0

	ctx := datastore.NewVersionedCtx(d, v)
	evt := datastore.SyncEvent{d.DataName(), ChangeBlockEvent}

	<-server.HandlerToken
	go func() {
		defer func() {
			wg1.Done()
			wg2.Done()
			dvid.Debugf("Wrote voxel blocks.  Before %s: %d bytes.  After: %d bytes\n", d.Compression(), preCompress, postCompress)
			server.HandlerToken <- 1
		}()

		batch := batcher.NewBatch(ctx)
		for i, block := range b {
			serialization, err := dvid.SerializeData(block.V, d.Compression(), d.Checksum())
			preCompress += len(block.V)
			postCompress += len(serialization)
			if err != nil {
				dvid.Errorf("Unable to serialize block: %v\n", err)
				return
			}
			batch.Put(block.K, serialization)

			indexZYX, err := DecodeTKey(block.K)
			if err != nil {
				dvid.Errorf("Unable to recover index from block key: %v\n", block.K)
				return
			}
			msg := datastore.SyncMessage{v, Block{indexZYX, block.V}}
			if err := datastore.NotifySubscribers(evt, msg); err != nil {
				dvid.Errorf("Unable to notify subscribers of ChangeBlockEvent in %s\n", d.DataName())
				return
			}

			// Check if we should commit
			if i%KVWriteSize == KVWriteSize-1 {
				if err := batch.Commit(); err != nil {
					dvid.Errorf("Error on trying to write batch: %v\n", err)
					return
				}
				batch = batcher.NewBatch(ctx)
			}
		}
		if err := batch.Commit(); err != nil {
			dvid.Errorf("Error on trying to write batch: %v\n", err)
			return
		}
	}()
	return nil
}
Esempio n. 19
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func (d *Data) putChunk(chunk *storage.Chunk) {
	defer func() {
		// After processing a chunk, return the token.
		server.HandlerToken <- 1

		// Notify the requestor that this chunk is done.
		if chunk.Wg != nil {
			chunk.Wg.Done()
		}
	}()

	op, ok := chunk.Op.(*putOperation)
	if !ok {
		log.Fatalf("Illegal operation passed to ProcessChunk() for data %s\n", d.DataName())
	}

	// Make sure our received chunk is valid.
	if chunk == nil {
		dvid.Errorf("Received nil chunk in ProcessChunk.  Ignoring chunk.\n")
		return
	}
	if chunk.K == nil {
		dvid.Errorf("Received nil chunk key in ProcessChunk.  Ignoring chunk.\n")
		return
	}

	// Initialize the block buffer using the chunk of data.  For voxels, this chunk of
	// data needs to be uncompressed and deserialized.
	var blockData []byte
	var err error
	if chunk.V == nil {
		blockData = d.BackgroundBlock()
	} else {
		blockData, _, err = dvid.DeserializeData(chunk.V, true)
		if err != nil {
			dvid.Errorf("Unable to deserialize block in '%s': %v\n", d.DataName(), err)
			return
		}
	}

	// Perform the operation.
	block := &storage.TKeyValue{K: chunk.K, V: blockData}
	if err = op.voxels.WriteBlock(block, d.BlockSize()); err != nil {
		dvid.Errorf("Unable to WriteBlock() in %q: %v\n", d.DataName(), err)
		return
	}
	serialization, err := dvid.SerializeData(blockData, d.Compression(), d.Checksum())
	if err != nil {
		dvid.Errorf("Unable to serialize block in %q: %v\n", d.DataName(), err)
		return
	}

	store, err := storage.BigDataStore()
	if err != nil {
		dvid.Errorf("Data type imageblk had error initializing store: %v\n", err)
		return
	}
	ctx := datastore.NewVersionedCtx(d, op.version)
	if err := store.Put(ctx, chunk.K, serialization); err != nil {
		dvid.Errorf("Unable to PUT voxel data for key %v: %v\n", chunk.K, err)
		return
	}

	// Notify any subscribers that you've changed block.
	evt := datastore.SyncEvent{d.DataName(), ChangeBlockEvent}
	msg := datastore.SyncMessage{op.version, Block{&op.indexZYX, block.V}}
	if err := datastore.NotifySubscribers(evt, msg); err != nil {
		dvid.Errorf("Unable to notify subscribers of ChangeBlockEvent in %s\n", d.DataName())
	}
}
Esempio n. 20
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// PutBlocks stores blocks of data in a span along X
func (d *Data) PutBlocks(v dvid.VersionID, start dvid.ChunkPoint3d, span int, data io.ReadCloser) error {
	store, err := storage.BigDataStore()
	if err != nil {
		return fmt.Errorf("Data type imageblk had error initializing store: %v\n", err)
	}
	batcher, ok := store.(storage.KeyValueBatcher)
	if !ok {
		return fmt.Errorf("Data type imageblk requires batch-enabled store, which %q is not\n", store)
	}

	ctx := datastore.NewVersionedCtx(d, v)
	batch := batcher.NewBatch(ctx)

	// Read blocks from the stream until we can output a batch put.
	const BatchSize = 1000
	var readBlocks int
	numBlockBytes := d.BlockSize().Prod()
	chunkPt := start
	buf := make([]byte, numBlockBytes)
	for {
		// Read a block's worth of data
		readBytes := int64(0)
		for {
			n, err := data.Read(buf[readBytes:])
			readBytes += int64(n)
			if readBytes == numBlockBytes {
				break
			}
			if err == io.EOF {
				return fmt.Errorf("Block data ceased before all block data read")
			}
			if err != nil {
				return fmt.Errorf("Error reading blocks: %v\n", err)
			}
		}

		if readBytes != numBlockBytes {
			return fmt.Errorf("Expected %d bytes in block read, got %d instead!  Aborting.", numBlockBytes, readBytes)
		}

		serialization, err := dvid.SerializeData(buf, d.Compression(), d.Checksum())
		if err != nil {
			return err
		}
		zyx := dvid.IndexZYX(chunkPt)
		batch.Put(NewTKey(&zyx), serialization)

		// Notify any subscribers that you've changed block.
		evt := datastore.SyncEvent{d.DataName(), ChangeBlockEvent}
		msg := datastore.SyncMessage{v, Block{&zyx, buf}}
		if err := datastore.NotifySubscribers(evt, msg); err != nil {
			return err
		}

		// Advance to next block
		chunkPt[0]++
		readBlocks++
		finish := (readBlocks == span)
		if finish || readBlocks%BatchSize == 0 {
			if err := batch.Commit(); err != nil {
				return fmt.Errorf("Error on batch commit, block %d: %v\n", readBlocks, err)
			}
			batch = batcher.NewBatch(ctx)
		}
		if finish {
			break
		}
	}
	return nil
}
Esempio n. 21
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// CreateComposite creates a new rgba8 image by combining hash of labels + the grayscale
func (d *Data) CreateComposite(request datastore.Request, reply *datastore.Response) error {
	timedLog := dvid.NewTimeLog()

	// Parse the request
	var uuidStr, dataName, cmdStr, grayscaleName, destName string
	request.CommandArgs(1, &uuidStr, &dataName, &cmdStr, &grayscaleName, &destName)

	// Get the version
	uuid, v, err := datastore.MatchingUUID(uuidStr)
	if err != nil {
		return err
	}

	// Log request
	if err = datastore.AddToNodeLog(uuid, []string{request.Command.String()}); err != nil {
		return err
	}

	// Get the grayscale data.
	dataservice, err := datastore.GetDataByUUID(uuid, dvid.InstanceName(grayscaleName))
	if err != nil {
		return err
	}
	grayscale, ok := dataservice.(*imageblk.Data)
	if !ok {
		return fmt.Errorf("%s is not the name of uint8 data", grayscaleName)
	}

	// Create a new rgba8blk data.
	var compservice datastore.DataService
	compservice, err = datastore.GetDataByUUID(uuid, dvid.InstanceName(destName))
	if err == nil {
		return fmt.Errorf("Data instance with name %q already exists", destName)
	}
	typeService, err := datastore.TypeServiceByName("rgba8blk")
	if err != nil {
		return fmt.Errorf("Could not get rgba8 type service from DVID")
	}
	config := dvid.NewConfig()
	compservice, err = datastore.NewData(uuid, typeService, dvid.InstanceName(destName), config)
	if err != nil {
		return err
	}
	composite, ok := compservice.(*imageblk.Data)
	if !ok {
		return fmt.Errorf("Error: %s was unable to be set to rgba8 data", destName)
	}

	// Iterate through all labels and grayscale chunks incrementally in Z, a layer at a time.
	wg := new(sync.WaitGroup)
	op := &blockOp{grayscale, composite, v}
	chunkOp := &storage.ChunkOp{op, wg}

	store, err := storage.BigDataStore()
	if err != nil {
		return err
	}
	ctx := datastore.NewVersionedCtx(d, v)
	extents := d.Extents()
	blockBeg := imageblk.NewTKey(extents.MinIndex)
	blockEnd := imageblk.NewTKey(extents.MaxIndex)
	err = store.ProcessRange(ctx, blockBeg, blockEnd, chunkOp, storage.ChunkFunc(d.CreateCompositeChunk))
	wg.Wait()

	// Set new mapped data to same extents.
	composite.Properties.Extents = grayscale.Properties.Extents
	if err := datastore.SaveDataByUUID(uuid, composite); err != nil {
		dvid.Infof("Could not save new data '%s': %v\n", destName, err)
	}

	timedLog.Infof("Created composite of %s and %s", grayscaleName, destName)
	return nil
}
Esempio n. 22
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func (d *Data) DeleteBlocks(ctx *datastore.VersionedCtx, start dvid.ChunkPoint3d, span int) error {
	store, err := storage.BigDataStore()
	if err != nil {
		return fmt.Errorf("Data type labelblk had error initializing store: %v\n", err)
	}
	batcher, ok := store.(storage.KeyValueBatcher)
	if !ok {
		return fmt.Errorf("Data type labelblk requires batch-enabled store, which %q is not\n", store)
	}

	indexBeg := dvid.IndexZYX(start)
	end := start
	end[0] += int32(span - 1)
	indexEnd := dvid.IndexZYX(end)
	begTKey := NewTKey(&indexBeg)
	endTKey := NewTKey(&indexEnd)

	iv := dvid.InstanceVersion{d.DataName(), ctx.VersionID()}
	mapping := labels.MergeCache.LabelMap(iv)

	kvs, err := store.GetRange(ctx, begTKey, endTKey)
	if err != nil {
		return err
	}

	batch := batcher.NewBatch(ctx)
	uncompress := true
	for _, kv := range kvs {
		izyx, err := DecodeTKey(kv.K)
		if err != nil {
			return err
		}

		// Delete the labelblk (really tombstones it)
		batch.Delete(kv.K)

		// Send data to delete associated labelvol for labels in this block
		block, _, err := dvid.DeserializeData(kv.V, uncompress)
		if err != nil {
			return fmt.Errorf("Unable to deserialize block, %s (%v): %v", ctx, kv.K, err)
		}
		if mapping != nil {
			n := len(block) / 8
			for i := 0; i < n; i++ {
				orig := binary.LittleEndian.Uint64(block[i*8 : i*8+8])
				mapped, found := mapping.FinalLabel(orig)
				if !found {
					mapped = orig
				}
				binary.LittleEndian.PutUint64(block[i*8:i*8+8], mapped)
			}
		}

		// Notify any subscribers that we've deleted this block.
		evt := datastore.SyncEvent{d.DataName(), labels.DeleteBlockEvent}
		msg := datastore.SyncMessage{ctx.VersionID(), labels.DeleteBlock{izyx, block}}
		if err := datastore.NotifySubscribers(evt, msg); err != nil {
			return err
		}

	}
	return batch.Commit()
}