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add volume tailer

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This commit is contained in:
Chris Lu 2019-04-18 11:05:02 -07:00
parent b142f9f1d5
commit 3dce1016cb
4 changed files with 228 additions and 148 deletions
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74
unmaintained/volume_tailer/volume_tailer.go Normal file
View file

@ -0,0 +1,74 @@
package main
import (
"context"
"flag"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/security"
weed_server "github.com/chrislusf/seaweedfs/weed/server"
"github.com/chrislusf/seaweedfs/weed/storage"
"github.com/spf13/viper"
"io"
"log"
)
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")
)
func main() {
flag.Parse()
weed_server.LoadConfiguration("security", false)
grpcDialOption := security.LoadClientTLS(viper.Sub("grpc"), "client")
vid := storage.VolumeId(*volumeId)
// find volume location, replication, ttl info
lookup, err := operation.Lookup(*master, vid.String())
if err != nil {
log.Printf("Error looking up volume %d: %v", vid, err)
return
}
volumeServer := lookup.Locations[0].Url
log.Printf("volume %d is on volume server %s", vid, volumeServer)
err = operation.WithVolumeServerClient(volumeServer, grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
stream, err := client.VolumeTail(context.Background(), &volume_server_pb.VolumeTailRequest{
VolumeId: uint32(vid),
SinceNs: 0,
DrainingSeconds: uint32(*timeoutSeconds),
})
if err != nil {
return err
}
for {
resp, recvErr := stream.Recv()
if recvErr != nil {
if recvErr == io.EOF {
break
} else {
return recvErr
}
}
println("header:", len(resp.NeedleHeader), "body:", len(resp.NeedleBody))
}
return nil
})
if err != nil {
log.Printf("Error VolumeTail volume %d: %v", vid, err)
}
}

6
weed/pb/volume_server.proto
View file

@ -42,7 +42,7 @@ service VolumeServer {
rpc CopyFile (CopyFileRequest) returns (stream CopyFileResponse) {
}
rpc VolumeStreamFollow (VolumeStreamFollowRequest) returns (stream VolumeStreamFollowResponse) {
rpc VolumeTail (VolumeTailRequest) returns (stream VolumeTailResponse) {
}
}
@ -166,12 +166,12 @@ message CopyFileResponse {
bytes file_content = 1;
}
message VolumeStreamFollowRequest {
message VolumeTailRequest {
uint32 volume_id = 1;
uint64 since_ns = 2;
uint32 drainingSeconds = 3;
}
message VolumeStreamFollowResponse {
message VolumeTailResponse {
bytes needle_header = 1;
bytes needle_body = 2;
}

240
weed/pb/volume_server_pb/volume_server.pb.go
View file

@ -39,8 +39,8 @@ It has these top-level messages:
VolumeCopyResponse
CopyFileRequest
CopyFileResponse
VolumeStreamFollowRequest
VolumeStreamFollowResponse
VolumeTailRequest
VolumeTailResponse
ReadVolumeFileStatusRequest
ReadVolumeFileStatusResponse
DiskStatus
@ -636,56 +636,56 @@ func (m *CopyFileResponse) GetFileContent() []byte {
return nil
}
type VolumeStreamFollowRequest struct {
type VolumeTailRequest 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 *VolumeTailRequest) Reset() { *m = VolumeTailRequest{} }
func (m *VolumeTailRequest) String() string { return proto.CompactTextString(m) }
func (*VolumeTailRequest) ProtoMessage() {}
func (*VolumeTailRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{30} }
func (m *VolumeStreamFollowRequest) GetVolumeId() uint32 {
func (m *VolumeTailRequest) GetVolumeId() uint32 {
if m != nil {
return m.VolumeId
}
return 0
}
func (m *VolumeStreamFollowRequest) GetSinceNs() uint64 {
func (m *VolumeTailRequest) GetSinceNs() uint64 {
if m != nil {
return m.SinceNs
}
return 0
}
func (m *VolumeStreamFollowRequest) GetDrainingSeconds() uint32 {
func (m *VolumeTailRequest) GetDrainingSeconds() uint32 {
if m != nil {
return m.DrainingSeconds
}
return 0
}
type VolumeStreamFollowResponse struct {
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"`
}
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 *VolumeTailResponse) Reset() { *m = VolumeTailResponse{} }
func (m *VolumeTailResponse) String() string { return proto.CompactTextString(m) }
func (*VolumeTailResponse) ProtoMessage() {}
func (*VolumeTailResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{31} }
func (m *VolumeStreamFollowResponse) GetNeedleHeader() []byte {
func (m *VolumeTailResponse) GetNeedleHeader() []byte {
if m != nil {
return m.NeedleHeader
}
return nil
}
func (m *VolumeStreamFollowResponse) GetNeedleBody() []byte {
func (m *VolumeTailResponse) GetNeedleBody() []byte {
if m != nil {
return m.NeedleBody
}
@ -899,8 +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((*VolumeTailRequest)(nil), "volume_server_pb.VolumeTailRequest")
proto.RegisterType((*VolumeTailResponse)(nil), "volume_server_pb.VolumeTailResponse")
proto.RegisterType((*ReadVolumeFileStatusRequest)(nil), "volume_server_pb.ReadVolumeFileStatusRequest")
proto.RegisterType((*ReadVolumeFileStatusResponse)(nil), "volume_server_pb.ReadVolumeFileStatusResponse")
proto.RegisterType((*DiskStatus)(nil), "volume_server_pb.DiskStatus")
@ -935,7 +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)
VolumeTail(ctx context.Context, in *VolumeTailRequest, opts ...grpc.CallOption) (VolumeServer_VolumeTailClient, error)
}
type volumeServerClient struct {
@ -1127,12 +1127,12 @@ 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...)
func (c *volumeServerClient) VolumeTail(ctx context.Context, in *VolumeTailRequest, opts ...grpc.CallOption) (VolumeServer_VolumeTailClient, error) {
stream, err := grpc.NewClientStream(ctx, &_VolumeServer_serviceDesc.Streams[2], c.cc, "/volume_server_pb.VolumeServer/VolumeTail", opts...)
if err != nil {
return nil, err
}
x := &volumeServerVolumeStreamFollowClient{stream}
x := &volumeServerVolumeTailClient{stream}
if err := x.ClientStream.SendMsg(in); err != nil {
return nil, err
}
@ -1142,17 +1142,17 @@ func (c *volumeServerClient) VolumeStreamFollow(ctx context.Context, in *VolumeS
return x, nil
}
type VolumeServer_VolumeStreamFollowClient interface {
Recv() (*VolumeStreamFollowResponse, error)
type VolumeServer_VolumeTailClient interface {
Recv() (*VolumeTailResponse, error)
grpc.ClientStream
}
type volumeServerVolumeStreamFollowClient struct {
type volumeServerVolumeTailClient struct {
grpc.ClientStream
}
func (x *volumeServerVolumeStreamFollowClient) Recv() (*VolumeStreamFollowResponse, error) {
m := new(VolumeStreamFollowResponse)
func (x *volumeServerVolumeTailClient) Recv() (*VolumeTailResponse, error) {
m := new(VolumeTailResponse)
if err := x.ClientStream.RecvMsg(m); err != nil {
return nil, err
}
@ -1179,7 +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
VolumeTail(*VolumeTailRequest, VolumeServer_VolumeTailServer) error
}
func RegisterVolumeServerServer(s *grpc.Server, srv VolumeServerServer) {
@ -1462,24 +1462,24 @@ 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)
func _VolumeServer_VolumeTail_Handler(srv interface{}, stream grpc.ServerStream) error {
m := new(VolumeTailRequest)
if err := stream.RecvMsg(m); err != nil {
return err
}
return srv.(VolumeServerServer).VolumeStreamFollow(m, &volumeServerVolumeStreamFollowServer{stream})
return srv.(VolumeServerServer).VolumeTail(m, &volumeServerVolumeTailServer{stream})
}
type VolumeServer_VolumeStreamFollowServer interface {
Send(*VolumeStreamFollowResponse) error
type VolumeServer_VolumeTailServer interface {
Send(*VolumeTailResponse) error
grpc.ServerStream
}
type volumeServerVolumeStreamFollowServer struct {
type volumeServerVolumeTailServer struct {
grpc.ServerStream
}
func (x *volumeServerVolumeStreamFollowServer) Send(m *VolumeStreamFollowResponse) error {
func (x *volumeServerVolumeTailServer) Send(m *VolumeTailResponse) error {
return x.ServerStream.SendMsg(m)
}
@ -1552,8 +1552,8 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
ServerStreams: true,
},
{
StreamName: "VolumeStreamFollow",
Handler: _VolumeServer_VolumeStreamFollow_Handler,
StreamName: "VolumeTail",
Handler: _VolumeServer_VolumeTail_Handler,
ServerStreams: true,
},
},
@ -1563,86 +1563,86 @@ var _VolumeServer_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("volume_server.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
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}

56
weed/server/volume_grpc_stream_follow.go
View file

@ -9,57 +9,63 @@ import (
"github.com/chrislusf/seaweedfs/weed/storage"
)
func (vs *VolumeServer) VolumeStreamFollow(req *volume_server_pb.VolumeStreamFollowRequest, stream volume_server_pb.VolumeServer_VolumeStreamFollowServer) error {
func (vs *VolumeServer) VolumeTail(req *volume_server_pb.VolumeTailRequest, stream volume_server_pb.VolumeServer_VolumeTailServer) error {
v := vs.store.GetVolume(storage.VolumeId(req.VolumeId))
if v == nil {
return fmt.Errorf("not found volume id %d", req.VolumeId)
}
defer glog.V(1).Infof("tailing volume %d finished", v.Id)
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)
}
lastProcessedTimestampNs, err := sendNeedlesSince(stream, v, lastTimestampNs)
if err != nil {
glog.Infof("sendNeedlesSince: %v", err)
return fmt.Errorf("streamFollow: %v", err)
}
time.Sleep(2 * time.Second)
if req.DrainingSeconds == 0 {
continue
}
if lastProcessedTimestampNs == lastTimestampNs {
drainingSeconds--
if drainingSeconds <= 0 {
return nil
}
glog.V(1).Infof("tailing volume %d drains requests with %d seconds remaining", v.Id, drainingSeconds)
} else {
lastTimestampNs = lastProcessedTimestampNs
drainingSeconds = req.DrainingSeconds
glog.V(1).Infof("tailing 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) {
func sendNeedlesSince(stream volume_server_pb.VolumeServer_VolumeTailServer, 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)
}
// log.Printf("reading ts %d offset %d isLast %v", lastTimestampNs, foundOffset, isLastOne)
if isLastOne {
return lastTimestampNs, nil
// need to heart beat to the client to ensure the connection health
sendErr := stream.Send(&volume_server_pb.VolumeTailResponse{})
return lastTimestampNs, sendErr
}
err = storage.ScanVolumeFileNeedleFrom(v.Version(), v.DataFile(), foundOffset.ToAcutalOffset(), func(needleHeader, needleBody []byte, needleAppendAtNs uint64) error {
sendErr := stream.Send(&volume_server_pb.VolumeStreamFollowResponse{
sendErr := stream.Send(&volume_server_pb.VolumeTailResponse{
NeedleHeader: needleHeader,
NeedleBody: needleBody,
})