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volume tailing chunks large files

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This commit is contained in:
Chris Lu 2019-04-18 19:22:13 -07:00
parent 3dce1016cb
commit fa176fe80f
5 changed files with 179 additions and 103 deletions
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49
unmaintained/volume_tailer/volume_tailer.go
View file

@ -10,6 +10,7 @@ import (
weed_server "github.com/chrislusf/seaweedfs/weed/server"
"github.com/chrislusf/seaweedfs/weed/storage"
"github.com/spf13/viper"
"golang.org/x/tools/godoc/util"
"io"
"log"
@ -19,6 +20,7 @@ var (
master = flag.String("master", "localhost:9333", "master server host and port")
volumeId = flag.Int("volumeId", -1, "a volume id")
timeoutSeconds = flag.Int("timeoutSeconds", 0, "disconnect if no activity after these seconds")
showTextFile = flag.Bool("showTextFile", false, "display textual file content")
)
func main() {
@ -59,7 +61,51 @@ func main() {
}
}
println("header:", len(resp.NeedleHeader), "body:", len(resp.NeedleBody))
needleHeader := resp.NeedleHeader
needleBody := resp.NeedleBody
if len(needleHeader) == 0 {
continue
}
for !resp.IsLastChunk {
resp, recvErr = stream.Recv()
if recvErr != nil {
if recvErr == io.EOF {
break
} else {
return recvErr
}
}
needleBody = append(needleBody, resp.NeedleBody...)
}
n := new(storage.Needle)
n.ParseNeedleHeader(needleHeader)
n.ReadNeedleBodyBytes(needleBody, storage.CurrentVersion)
if n.Size == 0 {
println("-", n.String())
continue
} else {
println("+", n.String())
}
if *showTextFile {
data := n.Data
if n.IsGzipped() {
if data, err = operation.UnGzipData(data); err != nil {
continue
}
}
if util.IsText(data) {
println(string(data))
}
println("-", n.String(), "compressed", n.IsGzipped(), "original size", len(data))
}
}
return nil
@ -70,5 +116,4 @@ func main() {
log.Printf("Error VolumeTail volume %d: %v", vid, err)
}
}

1
weed/pb/volume_server.proto
View file

@ -174,6 +174,7 @@ message VolumeTailRequest {
message VolumeTailResponse {
bytes needle_header = 1;
bytes needle_body = 2;
bool is_last_chunk = 3;
}
message ReadVolumeFileStatusRequest {

173
weed/pb/volume_server_pb/volume_server.pb.go
View file

@ -671,6 +671,7 @@ func (m *VolumeTailRequest) GetDrainingSeconds() uint32 {
type VolumeTailResponse struct {
NeedleHeader []byte `protobuf:"bytes,1,opt,name=needle_header,json=needleHeader,proto3" json:"needle_header,omitempty"`
NeedleBody []byte `protobuf:"bytes,2,opt,name=needle_body,json=needleBody,proto3" json:"needle_body,omitempty"`
IsLastChunk bool `protobuf:"varint,3,opt,name=is_last_chunk,json=isLastChunk" json:"is_last_chunk,omitempty"`
}
func (m *VolumeTailResponse) Reset() { *m = VolumeTailResponse{} }
@ -692,6 +693,13 @@ func (m *VolumeTailResponse) GetNeedleBody() []byte {
return nil
}
func (m *VolumeTailResponse) GetIsLastChunk() bool {
if m != nil {
return m.IsLastChunk
}
return false
}
type ReadVolumeFileStatusRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
}
@ -1563,86 +1571,87 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
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0xd8, 0x7d, 0xa7, 0x27, 0x65, 0x5b, 0x5a, 0x84, 0x3f, 0x01, 0xa4, 0x31, 0x9e, 0x46, 0x49, 0xd8,
0xee, 0x6a, 0x5e, 0x80, 0xb5, 0x82, 0x89, 0xe9, 0x8d, 0x47, 0xb0, 0xae, 0xc5, 0x2f, 0xc3, 0x69,
0x6b, 0xac, 0x0d, 0xb8, 0x50, 0x32, 0x32, 0x68, 0x0f, 0x53, 0x27, 0xc5, 0x77, 0xe2, 0x54, 0xb0,
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0xb6, 0x5d, 0xa7, 0xb1, 0xed, 0xba, 0x27, 0x6d, 0x37, 0x81, 0x21, 0x8f, 0x92, 0xd8, 0xa3, 0xae,
0x4f, 0x04, 0x71, 0xc3, 0xc8, 0xa7, 0xa6, 0x2b, 0xcf, 0x6a, 0xf9, 0x36, 0x11, 0xe4, 0x59, 0xe4,
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0xf4, 0x18, 0x77, 0xd3, 0xee, 0x54, 0x49, 0xac, 0x38, 0xab, 0x8c, 0xef, 0xe8, 0xd6, 0x34, 0xfb,
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0xff, 0x71, 0xd9, 0xf3, 0x7e, 0xec, 0x11, 0x00, 0x00,
}

18
weed/server/volume_grpc_stream_follow.go → weed/server/volume_grpc_tail.go
View file

@ -30,6 +30,7 @@ func (vs *VolumeServer) VolumeTail(req *volume_server_pb.VolumeTailRequest, stre
time.Sleep(2 * time.Second)
if req.DrainingSeconds == 0 {
lastTimestampNs = lastProcessedTimestampNs
continue
}
if lastProcessedTimestampNs == lastTimestampNs {
@ -59,19 +60,32 @@ func sendNeedlesSince(stream volume_server_pb.VolumeServer_VolumeTailServer, v *
if isLastOne {
// need to heart beat to the client to ensure the connection health
sendErr := stream.Send(&volume_server_pb.VolumeTailResponse{})
sendErr := stream.Send(&volume_server_pb.VolumeTailResponse{IsLastChunk: true})
return lastTimestampNs, sendErr
}
err = storage.ScanVolumeFileNeedleFrom(v.Version(), v.DataFile(), foundOffset.ToAcutalOffset(), func(needleHeader, needleBody []byte, needleAppendAtNs uint64) error {
blockSizeLimit := 1024 * 1024 * 2
isLastChunk := false
// need to send body by chunks
for i := 0; i < len(needleBody); i += blockSizeLimit {
stopOffset := i + blockSizeLimit
if stopOffset >= len(needleBody) {
isLastChunk = true
stopOffset = len(needleBody)
}
sendErr := stream.Send(&volume_server_pb.VolumeTailResponse{
NeedleHeader: needleHeader,
NeedleBody: needleBody,
NeedleBody: needleBody[i:stopOffset],
IsLastChunk: isLastChunk,
})
if sendErr != nil {
return sendErr
}
}
lastProcessedTimestampNs = needleAppendAtNs
return nil

31
weed/storage/needle_read_write.go
View file

@ -304,28 +304,35 @@ func (n *Needle) ReadNeedleBody(r *os.File, version Version, offset int64, bodyL
if bodyLength <= 0 {
return nil, nil
}
bytes = make([]byte, bodyLength)
if _, err = r.ReadAt(bytes, offset); err != nil {
return
}
err = n.ReadNeedleBodyBytes(bytes, version)
return
}
func (n *Needle) ReadNeedleBodyBytes(needleBody []byte, version Version) (err error) {
if len(needleBody) <= 0 {
return nil
}
switch version {
case Version1:
bytes = make([]byte, bodyLength)
if _, err = r.ReadAt(bytes, offset); err != nil {
return
}
n.Data = bytes[:n.Size]
n.Data = needleBody[:n.Size]
n.Checksum = NewCRC(n.Data)
case Version2, Version3:
bytes = make([]byte, bodyLength)
if _, err = r.ReadAt(bytes, offset); err != nil {
return
}
err = n.readNeedleDataVersion2(bytes[0:n.Size])
err = n.readNeedleDataVersion2(needleBody[0:n.Size])
n.Checksum = NewCRC(n.Data)
if version == Version3 {
tsOffset := n.Size + NeedleChecksumSize
n.AppendAtNs = util.BytesToUint64(bytes[tsOffset : tsOffset+TimestampSize])
n.AppendAtNs = util.BytesToUint64(needleBody[tsOffset : tsOffset+TimestampSize])
}
default:
err = fmt.Errorf("Unsupported Version! (%d)", version)
err = fmt.Errorf("unsupported version %d!", version)
}
return
}