You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
334 lines
9.0 KiB
334 lines
9.0 KiB
package filer
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"github.com/seaweedfs/seaweedfs/weed/wdclient"
|
|
"golang.org/x/exp/slices"
|
|
"math"
|
|
|
|
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
|
|
"github.com/seaweedfs/seaweedfs/weed/util"
|
|
)
|
|
|
|
func TotalSize(chunks []*filer_pb.FileChunk) (size uint64) {
|
|
for _, c := range chunks {
|
|
t := uint64(c.Offset + int64(c.Size))
|
|
if size < t {
|
|
size = t
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
func FileSize(entry *filer_pb.Entry) (size uint64) {
|
|
if entry == nil || entry.Attributes == nil {
|
|
return 0
|
|
}
|
|
fileSize := entry.Attributes.FileSize
|
|
if entry.RemoteEntry != nil {
|
|
if entry.RemoteEntry.RemoteMtime > entry.Attributes.Mtime {
|
|
fileSize = maxUint64(fileSize, uint64(entry.RemoteEntry.RemoteSize))
|
|
}
|
|
}
|
|
return maxUint64(TotalSize(entry.GetChunks()), fileSize)
|
|
}
|
|
|
|
func ETag(entry *filer_pb.Entry) (etag string) {
|
|
if entry.Attributes == nil || entry.Attributes.Md5 == nil {
|
|
return ETagChunks(entry.GetChunks())
|
|
}
|
|
return fmt.Sprintf("%x", entry.Attributes.Md5)
|
|
}
|
|
|
|
func ETagEntry(entry *Entry) (etag string) {
|
|
if entry.Attr.Md5 == nil {
|
|
return ETagChunks(entry.GetChunks())
|
|
}
|
|
return fmt.Sprintf("%x", entry.Attr.Md5)
|
|
}
|
|
|
|
func ETagChunks(chunks []*filer_pb.FileChunk) (etag string) {
|
|
if len(chunks) == 1 {
|
|
return fmt.Sprintf("%x", util.Base64Md5ToBytes(chunks[0].ETag))
|
|
}
|
|
var md5Digests [][]byte
|
|
for _, c := range chunks {
|
|
md5Digests = append(md5Digests, util.Base64Md5ToBytes(c.ETag))
|
|
}
|
|
return fmt.Sprintf("%x-%d", util.Md5(bytes.Join(md5Digests, nil)), len(chunks))
|
|
}
|
|
|
|
func CompactFileChunks(lookupFileIdFn wdclient.LookupFileIdFunctionType, chunks []*filer_pb.FileChunk) (compacted, garbage []*filer_pb.FileChunk) {
|
|
|
|
visibles, _ := NonOverlappingVisibleIntervals(lookupFileIdFn, chunks, 0, math.MaxInt64)
|
|
|
|
fileIds := make(map[string]bool)
|
|
for _, interval := range visibles {
|
|
fileIds[interval.fileId] = true
|
|
}
|
|
for _, chunk := range chunks {
|
|
if _, found := fileIds[chunk.GetFileIdString()]; found {
|
|
compacted = append(compacted, chunk)
|
|
} else {
|
|
garbage = append(garbage, chunk)
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func MinusChunks(lookupFileIdFn wdclient.LookupFileIdFunctionType, as, bs []*filer_pb.FileChunk) (delta []*filer_pb.FileChunk, err error) {
|
|
|
|
aData, aMeta, aErr := ResolveChunkManifest(lookupFileIdFn, as, 0, math.MaxInt64)
|
|
if aErr != nil {
|
|
return nil, aErr
|
|
}
|
|
bData, bMeta, bErr := ResolveChunkManifest(lookupFileIdFn, bs, 0, math.MaxInt64)
|
|
if bErr != nil {
|
|
return nil, bErr
|
|
}
|
|
|
|
delta = append(delta, DoMinusChunks(aData, bData)...)
|
|
delta = append(delta, DoMinusChunks(aMeta, bMeta)...)
|
|
return
|
|
}
|
|
|
|
func DoMinusChunks(as, bs []*filer_pb.FileChunk) (delta []*filer_pb.FileChunk) {
|
|
|
|
fileIds := make(map[string]bool)
|
|
for _, interval := range bs {
|
|
fileIds[interval.GetFileIdString()] = true
|
|
}
|
|
for _, chunk := range as {
|
|
if _, found := fileIds[chunk.GetFileIdString()]; !found {
|
|
delta = append(delta, chunk)
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func DoMinusChunksBySourceFileId(as, bs []*filer_pb.FileChunk) (delta []*filer_pb.FileChunk) {
|
|
|
|
fileIds := make(map[string]bool)
|
|
for _, interval := range bs {
|
|
fileIds[interval.GetFileIdString()] = true
|
|
fileIds[interval.GetSourceFileId()] = true
|
|
}
|
|
for _, chunk := range as {
|
|
_, sourceFileIdFound := fileIds[chunk.GetSourceFileId()]
|
|
_, fileIdFound := fileIds[chunk.GetFileId()]
|
|
if !sourceFileIdFound && !fileIdFound {
|
|
delta = append(delta, chunk)
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
type ChunkView struct {
|
|
FileId string
|
|
Offset int64
|
|
Size uint64
|
|
LogicOffset int64 // actual offset in the file, for the data specified via [offset, offset+size) in current chunk
|
|
ChunkSize uint64
|
|
CipherKey []byte
|
|
IsGzipped bool
|
|
}
|
|
|
|
func (cv *ChunkView) IsFullChunk() bool {
|
|
return cv.Size == cv.ChunkSize
|
|
}
|
|
|
|
func ViewFromChunks(lookupFileIdFn wdclient.LookupFileIdFunctionType, chunks []*filer_pb.FileChunk, offset int64, size int64) (views []*ChunkView) {
|
|
|
|
visibles, _ := NonOverlappingVisibleIntervals(lookupFileIdFn, chunks, offset, offset+size)
|
|
|
|
return ViewFromVisibleIntervals(visibles, offset, size)
|
|
|
|
}
|
|
|
|
func ViewFromVisibleIntervals(visibles []VisibleInterval, offset int64, size int64) (views []*ChunkView) {
|
|
|
|
stop := offset + size
|
|
if size == math.MaxInt64 {
|
|
stop = math.MaxInt64
|
|
}
|
|
if stop < offset {
|
|
stop = math.MaxInt64
|
|
}
|
|
|
|
for _, chunk := range visibles {
|
|
|
|
chunkStart, chunkStop := max(offset, chunk.start), min(stop, chunk.stop)
|
|
|
|
if chunkStart < chunkStop {
|
|
views = append(views, &ChunkView{
|
|
FileId: chunk.fileId,
|
|
Offset: chunkStart - chunk.start + chunk.chunkOffset,
|
|
Size: uint64(chunkStop - chunkStart),
|
|
LogicOffset: chunkStart,
|
|
ChunkSize: chunk.chunkSize,
|
|
CipherKey: chunk.cipherKey,
|
|
IsGzipped: chunk.isGzipped,
|
|
})
|
|
}
|
|
}
|
|
|
|
return views
|
|
|
|
}
|
|
|
|
func logPrintf(name string, visibles []VisibleInterval) {
|
|
|
|
/*
|
|
glog.V(0).Infof("%s len %d", name, len(visibles))
|
|
for _, v := range visibles {
|
|
glog.V(0).Infof("%s: [%d,%d) %s %d", name, v.start, v.stop, v.fileId, v.chunkOffset)
|
|
}
|
|
*/
|
|
}
|
|
|
|
func MergeIntoVisibles(visibles []VisibleInterval, chunk *filer_pb.FileChunk) (newVisibles []VisibleInterval) {
|
|
|
|
newV := newVisibleInterval(chunk.Offset, chunk.Offset+int64(chunk.Size), chunk.GetFileIdString(), chunk.ModifiedTsNs, 0, chunk.Size, chunk.CipherKey, chunk.IsCompressed)
|
|
|
|
length := len(visibles)
|
|
if length == 0 {
|
|
return append(visibles, newV)
|
|
}
|
|
last := visibles[length-1]
|
|
if last.stop <= chunk.Offset {
|
|
return append(visibles, newV)
|
|
}
|
|
|
|
logPrintf(" before", visibles)
|
|
// glog.V(0).Infof("newVisibles %d adding chunk [%d,%d) %s size:%d", len(newVisibles), chunk.Offset, chunk.Offset+int64(chunk.Size), chunk.GetFileIdString(), chunk.Size)
|
|
chunkStop := chunk.Offset + int64(chunk.Size)
|
|
for _, v := range visibles {
|
|
if v.start < chunk.Offset && chunk.Offset < v.stop {
|
|
t := newVisibleInterval(v.start, chunk.Offset, v.fileId, v.modifiedTsNs, v.chunkOffset, v.chunkSize, v.cipherKey, v.isGzipped)
|
|
newVisibles = append(newVisibles, t)
|
|
// glog.V(0).Infof("visible %d [%d,%d) =1> [%d,%d)", i, v.start, v.stop, t.start, t.stop)
|
|
}
|
|
if v.start < chunkStop && chunkStop < v.stop {
|
|
t := newVisibleInterval(chunkStop, v.stop, v.fileId, v.modifiedTsNs, v.chunkOffset+(chunkStop-v.start), v.chunkSize, v.cipherKey, v.isGzipped)
|
|
newVisibles = append(newVisibles, t)
|
|
// glog.V(0).Infof("visible %d [%d,%d) =2> [%d,%d)", i, v.start, v.stop, t.start, t.stop)
|
|
}
|
|
if chunkStop <= v.start || v.stop <= chunk.Offset {
|
|
newVisibles = append(newVisibles, v)
|
|
// glog.V(0).Infof("visible %d [%d,%d) =3> [%d,%d)", i, v.start, v.stop, v.start, v.stop)
|
|
}
|
|
}
|
|
newVisibles = append(newVisibles, newV)
|
|
|
|
logPrintf(" append", newVisibles)
|
|
|
|
for i := len(newVisibles) - 1; i >= 0; i-- {
|
|
if i > 0 && newV.start < newVisibles[i-1].start {
|
|
newVisibles[i] = newVisibles[i-1]
|
|
} else {
|
|
newVisibles[i] = newV
|
|
break
|
|
}
|
|
}
|
|
logPrintf(" sorted", newVisibles)
|
|
|
|
return newVisibles
|
|
}
|
|
|
|
// NonOverlappingVisibleIntervals translates the file chunk into VisibleInterval in memory
|
|
// If the file chunk content is a chunk manifest
|
|
func NonOverlappingVisibleIntervals(lookupFileIdFn wdclient.LookupFileIdFunctionType, chunks []*filer_pb.FileChunk, startOffset int64, stopOffset int64) (visibles []VisibleInterval, err error) {
|
|
|
|
chunks, _, err = ResolveChunkManifest(lookupFileIdFn, chunks, startOffset, stopOffset)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
visibles2 := readResolvedChunks(chunks)
|
|
|
|
if true {
|
|
return visibles2, err
|
|
}
|
|
slices.SortFunc(chunks, func(a, b *filer_pb.FileChunk) bool {
|
|
if a.ModifiedTsNs == b.ModifiedTsNs {
|
|
filer_pb.EnsureFid(a)
|
|
filer_pb.EnsureFid(b)
|
|
if a.Fid == nil || b.Fid == nil {
|
|
return true
|
|
}
|
|
return a.Fid.FileKey < b.Fid.FileKey
|
|
}
|
|
return a.ModifiedTsNs < b.ModifiedTsNs
|
|
})
|
|
for _, chunk := range chunks {
|
|
|
|
// glog.V(0).Infof("merge [%d,%d)", chunk.Offset, chunk.Offset+int64(chunk.Size))
|
|
visibles = MergeIntoVisibles(visibles, chunk)
|
|
|
|
logPrintf("add", visibles)
|
|
|
|
}
|
|
|
|
if len(visibles) != len(visibles2) {
|
|
fmt.Printf("different visibles size %d : %d\n", len(visibles), len(visibles2))
|
|
} else {
|
|
for i := 0; i < len(visibles); i++ {
|
|
checkDifference(visibles[i], visibles2[i])
|
|
}
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func checkDifference(x, y VisibleInterval) {
|
|
if x.start != y.start ||
|
|
x.stop != y.stop ||
|
|
x.fileId != y.fileId ||
|
|
x.modifiedTsNs != y.modifiedTsNs {
|
|
fmt.Printf("different visible %+v : %+v\n", x, y)
|
|
}
|
|
}
|
|
|
|
// find non-overlapping visible intervals
|
|
// visible interval map to one file chunk
|
|
|
|
type VisibleInterval struct {
|
|
start int64
|
|
stop int64
|
|
modifiedTsNs int64
|
|
fileId string
|
|
chunkOffset int64
|
|
chunkSize uint64
|
|
cipherKey []byte
|
|
isGzipped bool
|
|
}
|
|
|
|
func newVisibleInterval(start, stop int64, fileId string, modifiedTime int64, chunkOffset int64, chunkSize uint64, cipherKey []byte, isGzipped bool) VisibleInterval {
|
|
return VisibleInterval{
|
|
start: start,
|
|
stop: stop,
|
|
fileId: fileId,
|
|
modifiedTsNs: modifiedTime,
|
|
chunkOffset: chunkOffset, // the starting position in the chunk
|
|
chunkSize: chunkSize,
|
|
cipherKey: cipherKey,
|
|
isGzipped: isGzipped,
|
|
}
|
|
}
|
|
|
|
func min(x, y int64) int64 {
|
|
if x <= y {
|
|
return x
|
|
}
|
|
return y
|
|
}
|
|
func max(x, y int64) int64 {
|
|
if x <= y {
|
|
return y
|
|
}
|
|
return x
|
|
}
|