add VolumeStreamFollow, but not used yet

This commit is contained in:
Chris Lu 2019-04-18 00:18:29 -07:00
parent 13ad5c1966
commit b09e8dbb37
8 changed files with 351 additions and 102 deletions

View File

@ -84,7 +84,7 @@ func iterateEntries(datFile, idxFile *os.File, visitNeedle func(n *storage.Needl
}
offset := int64(superBlock.BlockSize())
version := superBlock.Version()
n, rest, err := storage.ReadNeedleHeader(datFile, version, offset)
n, _, rest, err := storage.ReadNeedleHeader(datFile, version, offset)
if err != nil {
fmt.Printf("cannot read needle header: %v", err)
return
@ -114,7 +114,7 @@ func iterateEntries(datFile, idxFile *os.File, visitNeedle func(n *storage.Needl
fmt.Println("Recovered in f", r)
}
}()
if err = n.ReadNeedleBody(datFile, version, offset+int64(types.NeedleEntrySize), rest); err != nil {
if _, err = n.ReadNeedleBody(datFile, version, offset+int64(types.NeedleEntrySize), rest); err != nil {
fmt.Printf("cannot read needle body: offset %d body %d %v\n", offset, rest, err)
}
}()
@ -126,7 +126,7 @@ func iterateEntries(datFile, idxFile *os.File, visitNeedle func(n *storage.Needl
offset += types.NeedleEntrySize + rest
//fmt.Printf("==> new entry offset %d\n", offset)
if n, rest, err = storage.ReadNeedleHeader(datFile, version, offset); err != nil {
if n, _, rest, err = storage.ReadNeedleHeader(datFile, version, offset); err != nil {
if err == io.EOF {
return
}

View File

@ -42,6 +42,9 @@ service VolumeServer {
rpc CopyFile (CopyFileRequest) returns (stream CopyFileResponse) {
}
rpc VolumeStreamFollow (VolumeStreamFollowRequest) returns (stream VolumeStreamFollowResponse) {
}
}
//////////////////////////////////////////////////
@ -120,7 +123,7 @@ message VolumeSyncStatusResponse {
message VolumeIncrementalCopyRequest {
uint32 volume_id = 1;
uint64 since = 2;
uint64 since_ns = 2;
}
message VolumeIncrementalCopyResponse {
bytes file_content = 1;
@ -163,6 +166,16 @@ message CopyFileResponse {
bytes file_content = 1;
}
message VolumeStreamFollowRequest {
uint32 volume_id = 1;
uint64 since_ns = 2;
uint32 drainingSeconds = 3;
}
message VolumeStreamFollowResponse {
bytes needle_header = 1;
bytes needle_body = 2;
}
message ReadVolumeFileStatusRequest {
uint32 volume_id = 1;
}

View File

@ -39,6 +39,8 @@ It has these top-level messages:
VolumeCopyResponse
CopyFileRequest
CopyFileResponse
VolumeStreamFollowRequest
VolumeStreamFollowResponse
ReadVolumeFileStatusRequest
ReadVolumeFileStatusResponse
DiskStatus
@ -420,7 +422,7 @@ func (m *VolumeSyncStatusResponse) GetIdxFileSize() uint64 {
type VolumeIncrementalCopyRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
Since uint64 `protobuf:"varint,2,opt,name=since" json:"since,omitempty"`
SinceNs uint64 `protobuf:"varint,2,opt,name=since_ns,json=sinceNs" json:"since_ns,omitempty"`
}
func (m *VolumeIncrementalCopyRequest) Reset() { *m = VolumeIncrementalCopyRequest{} }
@ -435,9 +437,9 @@ func (m *VolumeIncrementalCopyRequest) GetVolumeId() uint32 {
return 0
}
func (m *VolumeIncrementalCopyRequest) GetSince() uint64 {
func (m *VolumeIncrementalCopyRequest) GetSinceNs() uint64 {
if m != nil {
return m.Since
return m.SinceNs
}
return 0
}
@ -634,6 +636,62 @@ func (m *CopyFileResponse) GetFileContent() []byte {
return nil
}
type VolumeStreamFollowRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
SinceNs uint64 `protobuf:"varint,2,opt,name=since_ns,json=sinceNs" json:"since_ns,omitempty"`
DrainingSeconds uint32 `protobuf:"varint,3,opt,name=drainingSeconds" json:"drainingSeconds,omitempty"`
}
func (m *VolumeStreamFollowRequest) Reset() { *m = VolumeStreamFollowRequest{} }
func (m *VolumeStreamFollowRequest) String() string { return proto.CompactTextString(m) }
func (*VolumeStreamFollowRequest) ProtoMessage() {}
func (*VolumeStreamFollowRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{30} }
func (m *VolumeStreamFollowRequest) GetVolumeId() uint32 {
if m != nil {
return m.VolumeId
}
return 0
}
func (m *VolumeStreamFollowRequest) GetSinceNs() uint64 {
if m != nil {
return m.SinceNs
}
return 0
}
func (m *VolumeStreamFollowRequest) GetDrainingSeconds() uint32 {
if m != nil {
return m.DrainingSeconds
}
return 0
}
type VolumeStreamFollowResponse 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"`
}
func (m *VolumeStreamFollowResponse) Reset() { *m = VolumeStreamFollowResponse{} }
func (m *VolumeStreamFollowResponse) String() string { return proto.CompactTextString(m) }
func (*VolumeStreamFollowResponse) ProtoMessage() {}
func (*VolumeStreamFollowResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{31} }
func (m *VolumeStreamFollowResponse) GetNeedleHeader() []byte {
if m != nil {
return m.NeedleHeader
}
return nil
}
func (m *VolumeStreamFollowResponse) GetNeedleBody() []byte {
if m != nil {
return m.NeedleBody
}
return nil
}
type ReadVolumeFileStatusRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
}
@ -641,7 +699,7 @@ type ReadVolumeFileStatusRequest struct {
func (m *ReadVolumeFileStatusRequest) Reset() { *m = ReadVolumeFileStatusRequest{} }
func (m *ReadVolumeFileStatusRequest) String() string { return proto.CompactTextString(m) }
func (*ReadVolumeFileStatusRequest) ProtoMessage() {}
func (*ReadVolumeFileStatusRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{30} }
func (*ReadVolumeFileStatusRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{32} }
func (m *ReadVolumeFileStatusRequest) GetVolumeId() uint32 {
if m != nil {
@ -662,7 +720,7 @@ type ReadVolumeFileStatusResponse struct {
func (m *ReadVolumeFileStatusResponse) Reset() { *m = ReadVolumeFileStatusResponse{} }
func (m *ReadVolumeFileStatusResponse) String() string { return proto.CompactTextString(m) }
func (*ReadVolumeFileStatusResponse) ProtoMessage() {}
func (*ReadVolumeFileStatusResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{31} }
func (*ReadVolumeFileStatusResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{33} }
func (m *ReadVolumeFileStatusResponse) GetVolumeId() uint32 {
if m != nil {
@ -716,7 +774,7 @@ type DiskStatus struct {
func (m *DiskStatus) Reset() { *m = DiskStatus{} }
func (m *DiskStatus) String() string { return proto.CompactTextString(m) }
func (*DiskStatus) ProtoMessage() {}
func (*DiskStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{32} }
func (*DiskStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{34} }
func (m *DiskStatus) GetDir() string {
if m != nil {
@ -759,7 +817,7 @@ type MemStatus struct {
func (m *MemStatus) Reset() { *m = MemStatus{} }
func (m *MemStatus) String() string { return proto.CompactTextString(m) }
func (*MemStatus) ProtoMessage() {}
func (*MemStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{33} }
func (*MemStatus) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{35} }
func (m *MemStatus) GetGoroutines() int32 {
if m != nil {
@ -841,6 +899,8 @@ func init() {
proto.RegisterType((*VolumeCopyResponse)(nil), "volume_server_pb.VolumeCopyResponse")
proto.RegisterType((*CopyFileRequest)(nil), "volume_server_pb.CopyFileRequest")
proto.RegisterType((*CopyFileResponse)(nil), "volume_server_pb.CopyFileResponse")
proto.RegisterType((*VolumeStreamFollowRequest)(nil), "volume_server_pb.VolumeStreamFollowRequest")
proto.RegisterType((*VolumeStreamFollowResponse)(nil), "volume_server_pb.VolumeStreamFollowResponse")
proto.RegisterType((*ReadVolumeFileStatusRequest)(nil), "volume_server_pb.ReadVolumeFileStatusRequest")
proto.RegisterType((*ReadVolumeFileStatusResponse)(nil), "volume_server_pb.ReadVolumeFileStatusResponse")
proto.RegisterType((*DiskStatus)(nil), "volume_server_pb.DiskStatus")
@ -875,6 +935,7 @@ type VolumeServerClient interface {
VolumeCopy(ctx context.Context, in *VolumeCopyRequest, opts ...grpc.CallOption) (*VolumeCopyResponse, error)
ReadVolumeFileStatus(ctx context.Context, in *ReadVolumeFileStatusRequest, opts ...grpc.CallOption) (*ReadVolumeFileStatusResponse, error)
CopyFile(ctx context.Context, in *CopyFileRequest, opts ...grpc.CallOption) (VolumeServer_CopyFileClient, error)
VolumeStreamFollow(ctx context.Context, in *VolumeStreamFollowRequest, opts ...grpc.CallOption) (VolumeServer_VolumeStreamFollowClient, error)
}
type volumeServerClient struct {
@ -1066,6 +1127,38 @@ func (x *volumeServerCopyFileClient) Recv() (*CopyFileResponse, error) {
return m, nil
}
func (c *volumeServerClient) VolumeStreamFollow(ctx context.Context, in *VolumeStreamFollowRequest, opts ...grpc.CallOption) (VolumeServer_VolumeStreamFollowClient, error) {
stream, err := grpc.NewClientStream(ctx, &_VolumeServer_serviceDesc.Streams[2], c.cc, "/volume_server_pb.VolumeServer/VolumeStreamFollow", opts...)
if err != nil {
return nil, err
}
x := &volumeServerVolumeStreamFollowClient{stream}
if err := x.ClientStream.SendMsg(in); err != nil {
return nil, err
}
if err := x.ClientStream.CloseSend(); err != nil {
return nil, err
}
return x, nil
}
type VolumeServer_VolumeStreamFollowClient interface {
Recv() (*VolumeStreamFollowResponse, error)
grpc.ClientStream
}
type volumeServerVolumeStreamFollowClient struct {
grpc.ClientStream
}
func (x *volumeServerVolumeStreamFollowClient) Recv() (*VolumeStreamFollowResponse, error) {
m := new(VolumeStreamFollowResponse)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
return m, nil
}
// Server API for VolumeServer service
type VolumeServerServer interface {
@ -1086,6 +1179,7 @@ type VolumeServerServer interface {
VolumeCopy(context.Context, *VolumeCopyRequest) (*VolumeCopyResponse, error)
ReadVolumeFileStatus(context.Context, *ReadVolumeFileStatusRequest) (*ReadVolumeFileStatusResponse, error)
CopyFile(*CopyFileRequest, VolumeServer_CopyFileServer) error
VolumeStreamFollow(*VolumeStreamFollowRequest, VolumeServer_VolumeStreamFollowServer) error
}
func RegisterVolumeServerServer(s *grpc.Server, srv VolumeServerServer) {
@ -1368,6 +1462,27 @@ func (x *volumeServerCopyFileServer) Send(m *CopyFileResponse) error {
return x.ServerStream.SendMsg(m)
}
func _VolumeServer_VolumeStreamFollow_Handler(srv interface{}, stream grpc.ServerStream) error {
m := new(VolumeStreamFollowRequest)
if err := stream.RecvMsg(m); err != nil {
return err
}
return srv.(VolumeServerServer).VolumeStreamFollow(m, &volumeServerVolumeStreamFollowServer{stream})
}
type VolumeServer_VolumeStreamFollowServer interface {
Send(*VolumeStreamFollowResponse) error
grpc.ServerStream
}
type volumeServerVolumeStreamFollowServer struct {
grpc.ServerStream
}
func (x *volumeServerVolumeStreamFollowServer) Send(m *VolumeStreamFollowResponse) error {
return x.ServerStream.SendMsg(m)
}
var _VolumeServer_serviceDesc = grpc.ServiceDesc{
ServiceName: "volume_server_pb.VolumeServer",
HandlerType: (*VolumeServerServer)(nil),
@ -1436,6 +1551,11 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
Handler: _VolumeServer_CopyFile_Handler,
ServerStreams: true,
},
{
StreamName: "VolumeStreamFollow",
Handler: _VolumeServer_VolumeStreamFollow_Handler,
ServerStreams: true,
},
},
Metadata: "volume_server.proto",
}
@ -1443,80 +1563,86 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
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}

View File

@ -18,9 +18,9 @@ func (vs *VolumeServer) VolumeIncrementalCopy(req *volume_server_pb.VolumeIncrem
}
stopOffset := v.Size()
foundOffset, isLastOne, err := v.BinarySearchByAppendAtNs(req.Since)
foundOffset, isLastOne, err := v.BinarySearchByAppendAtNs(req.SinceNs)
if err != nil {
return fmt.Errorf("fail to locate by appendAtNs %d: %s", req.Since, err)
return fmt.Errorf("fail to locate by appendAtNs %d: %s", req.SinceNs, err)
}
if isLastOne {

View File

@ -0,0 +1,77 @@
package weed_server
import (
"fmt"
"time"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/storage"
)
func (vs *VolumeServer) VolumeStreamFollow(req *volume_server_pb.VolumeStreamFollowRequest, stream volume_server_pb.VolumeServer_VolumeStreamFollowServer) error {
v := vs.store.GetVolume(storage.VolumeId(req.VolumeId))
if v == nil {
return fmt.Errorf("not found volume id %d", req.VolumeId)
}
lastTimestampNs := req.SinceNs
drainingSeconds := req.DrainingSeconds
ticker := time.NewTicker(time.Second)
for {
select {
case <-ticker.C:
lastProcessedTimestampNs, err := sendNeedlesSince(stream, v, lastTimestampNs)
if err != nil {
return fmt.Errorf("streamFollow: %v", err)
}
if req.DrainingSeconds == 0 {
continue
}
if lastProcessedTimestampNs == lastTimestampNs {
drainingSeconds--
if drainingSeconds <= 0 {
return nil
}
glog.V(0).Infof("volume %d drains requests with %d seconds remaining ...", v.Id, drainingSeconds)
} else {
drainingSeconds = req.DrainingSeconds
glog.V(0).Infof("volume %d resets draining wait time to %d seconds", v.Id, drainingSeconds)
}
}
}
}
func sendNeedlesSince(stream volume_server_pb.VolumeServer_VolumeStreamFollowServer, v *storage.Volume, lastTimestampNs uint64) (lastProcessedTimestampNs uint64, err error) {
foundOffset, isLastOne, err := v.BinarySearchByAppendAtNs(lastTimestampNs)
if err != nil {
return 0, fmt.Errorf("fail to locate by appendAtNs %d: %s", lastTimestampNs, err)
}
if isLastOne {
return lastTimestampNs, nil
}
err = storage.ScanVolumeFileNeedleFrom(v.Version(), v.DataFile(), foundOffset.ToAcutalOffset(), func(needleHeader, needleBody []byte, needleAppendAtNs uint64) error {
sendErr := stream.Send(&volume_server_pb.VolumeStreamFollowResponse{
NeedleHeader: needleHeader,
NeedleBody: needleBody,
})
if sendErr != nil {
return sendErr
}
lastProcessedTimestampNs = needleAppendAtNs
return nil
})
return
}

View File

@ -267,14 +267,14 @@ func (n *Needle) readNeedleDataVersion2(bytes []byte) (err error) {
return nil
}
func ReadNeedleHeader(r *os.File, version Version, offset int64) (n *Needle, bodyLength int64, err error) {
func ReadNeedleHeader(r *os.File, version Version, offset int64) (n *Needle, bytes []byte, bodyLength int64, err error) {
n = new(Needle)
if version == Version1 || version == Version2 || version == Version3 {
bytes := make([]byte, NeedleEntrySize)
bytes = make([]byte, NeedleEntrySize)
var count int
count, err = r.ReadAt(bytes, offset)
if count <= 0 || err != nil {
return nil, 0, err
return nil, bytes, 0, err
}
n.ParseNeedleHeader(bytes)
bodyLength = NeedleBodyLength(n.Size, version)
@ -299,21 +299,21 @@ func NeedleBodyLength(needleSize uint32, version Version) int64 {
//n should be a needle already read the header
//the input stream will read until next file entry
func (n *Needle) ReadNeedleBody(r *os.File, version Version, offset int64, bodyLength int64) (err error) {
func (n *Needle) ReadNeedleBody(r *os.File, version Version, offset int64, bodyLength int64) (bytes []byte, err error) {
if bodyLength <= 0 {
return nil
return nil, nil
}
switch version {
case Version1:
bytes := make([]byte, bodyLength)
bytes = make([]byte, bodyLength)
if _, err = r.ReadAt(bytes, offset); err != nil {
return
}
n.Data = bytes[:n.Size]
n.Checksum = NewCRC(n.Data)
case Version2, Version3:
bytes := make([]byte, bodyLength)
bytes = make([]byte, bodyLength)
if _, err = r.ReadAt(bytes, offset); err != nil {
return
}

View File

@ -68,7 +68,7 @@ func (v *Volume) IncrementalBackup(volumeServer string, grpcDialOption grpc.Dial
stream, err := client.VolumeIncrementalCopy(ctx, &volume_server_pb.VolumeIncrementalCopyRequest{
VolumeId: uint32(v.Id),
Since: appendAtNs,
SinceNs: appendAtNs,
})
if err != nil {
return err
@ -147,11 +147,11 @@ func (v *Volume) locateLastAppendEntry() (Offset, error) {
func (v *Volume) readAppendAtNs(offset Offset) (uint64, error) {
n, bodyLength, err := ReadNeedleHeader(v.dataFile, v.SuperBlock.version, offset.ToAcutalOffset())
n, _, bodyLength, err := ReadNeedleHeader(v.dataFile, v.SuperBlock.version, offset.ToAcutalOffset())
if err != nil {
return 0, fmt.Errorf("ReadNeedleHeader: %v", err)
}
err = n.ReadNeedleBody(v.dataFile, v.SuperBlock.version, offset.ToAcutalOffset()+int64(NeedleEntrySize), bodyLength)
_, err = n.ReadNeedleBody(v.dataFile, v.SuperBlock.version, offset.ToAcutalOffset()+int64(NeedleEntrySize), bodyLength)
if err != nil {
return 0, fmt.Errorf("ReadNeedleBody offset %d, bodyLength %d: %v", offset.ToAcutalOffset(), bodyLength, err)
}

View File

@ -195,7 +195,7 @@ func ScanVolumeFile(dirname string, collection string, id VolumeId,
}
func ScanVolumeFileFrom(version Version, dataFile *os.File, offset int64, volumeFileScanner VolumeFileScanner) (err error) {
n, rest, e := ReadNeedleHeader(dataFile, version, offset)
n, _, rest, e := ReadNeedleHeader(dataFile, version, offset)
if e != nil {
if e == io.EOF {
return nil
@ -204,7 +204,7 @@ func ScanVolumeFileFrom(version Version, dataFile *os.File, offset int64, volume
}
for n != nil {
if volumeFileScanner.ReadNeedleBody() {
if err = n.ReadNeedleBody(dataFile, version, offset+NeedleEntrySize, rest); err != nil {
if _, err = n.ReadNeedleBody(dataFile, version, offset+NeedleEntrySize, rest); err != nil {
glog.V(0).Infof("cannot read needle body: %v", err)
//err = fmt.Errorf("cannot read needle body: %v", err)
//return
@ -219,7 +219,40 @@ func ScanVolumeFileFrom(version Version, dataFile *os.File, offset int64, volume
}
offset += NeedleEntrySize + rest
glog.V(4).Infof("==> new entry offset %d", offset)
if n, rest, err = ReadNeedleHeader(dataFile, version, offset); err != nil {
if n, _, rest, err = ReadNeedleHeader(dataFile, version, offset); err != nil {
if err == io.EOF {
return nil
}
return fmt.Errorf("cannot read needle header at offset %d: %v", offset, err)
}
glog.V(4).Infof("new entry needle size:%d rest:%d", n.Size, rest)
}
return nil
}
func ScanVolumeFileNeedleFrom(version Version, dataFile *os.File, offset int64, fn func(needleHeader, needleBody []byte, needleAppendAtNs uint64) error) (err error) {
n, nh, rest, e := ReadNeedleHeader(dataFile, version, offset)
if e != nil {
if e == io.EOF {
return nil
}
return fmt.Errorf("cannot read %s at offset %d: %v", dataFile.Name(), offset, e)
}
for n != nil {
var needleBody []byte
if needleBody, err = n.ReadNeedleBody(dataFile, version, offset+NeedleEntrySize, rest); err != nil {
glog.V(0).Infof("cannot read needle body: %v", err)
//err = fmt.Errorf("cannot read needle body: %v", err)
//return
}
err = fn(nh, needleBody, n.AppendAtNs)
if err != nil {
glog.V(0).Infof("visit needle error: %v", err)
return
}
offset += NeedleEntrySize + rest
glog.V(4).Infof("==> new entry offset %d", offset)
if n, nh, rest, err = ReadNeedleHeader(dataFile, version, offset); err != nil {
if err == io.EOF {
return nil
}