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read ec volume shards locations from master

This commit is contained in:
Chris Lu 2019-05-28 00:13:13 -07:00
parent 713596e781
commit 2858a954b3
5 changed files with 291 additions and 106 deletions

View file

@ -21,6 +21,8 @@ service Seaweed {
}
rpc VolumeList (VolumeListRequest) returns (VolumeListResponse) {
}
rpc LookupEcVolume (LookupEcVolumeRequest) returns (LookupEcVolumeResponse) {
}
}
//////////////////////////////////////////////////
@ -218,3 +220,15 @@ message VolumeListResponse {
TopologyInfo topology_info = 1;
uint64 volume_size_limit_mb = 2;
}
message LookupEcVolumeRequest {
uint32 volume_id = 1;
}
message LookupEcVolumeResponse {
uint32 volume_id = 1;
message EcShardIdLocation {
uint32 shard_id = 1;
repeated Location locations = 2;
}
repeated EcShardIdLocation shard_id_locations = 2;
}

View file

@ -37,6 +37,8 @@ It has these top-level messages:
TopologyInfo
VolumeListRequest
VolumeListResponse
LookupEcVolumeRequest
LookupEcVolumeResponse
*/
package master_pb
@ -1158,6 +1160,74 @@ func (m *VolumeListResponse) GetVolumeSizeLimitMb() uint64 {
return 0
}
type LookupEcVolumeRequest struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
}
func (m *LookupEcVolumeRequest) Reset() { *m = LookupEcVolumeRequest{} }
func (m *LookupEcVolumeRequest) String() string { return proto.CompactTextString(m) }
func (*LookupEcVolumeRequest) ProtoMessage() {}
func (*LookupEcVolumeRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{28} }
func (m *LookupEcVolumeRequest) GetVolumeId() uint32 {
if m != nil {
return m.VolumeId
}
return 0
}
type LookupEcVolumeResponse struct {
VolumeId uint32 `protobuf:"varint,1,opt,name=volume_id,json=volumeId" json:"volume_id,omitempty"`
ShardIdLocations []*LookupEcVolumeResponse_EcShardIdLocation `protobuf:"bytes,2,rep,name=shard_id_locations,json=shardIdLocations" json:"shard_id_locations,omitempty"`
}
func (m *LookupEcVolumeResponse) Reset() { *m = LookupEcVolumeResponse{} }
func (m *LookupEcVolumeResponse) String() string { return proto.CompactTextString(m) }
func (*LookupEcVolumeResponse) ProtoMessage() {}
func (*LookupEcVolumeResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{29} }
func (m *LookupEcVolumeResponse) GetVolumeId() uint32 {
if m != nil {
return m.VolumeId
}
return 0
}
func (m *LookupEcVolumeResponse) GetShardIdLocations() []*LookupEcVolumeResponse_EcShardIdLocation {
if m != nil {
return m.ShardIdLocations
}
return nil
}
type LookupEcVolumeResponse_EcShardIdLocation struct {
ShardId uint32 `protobuf:"varint,1,opt,name=shard_id,json=shardId" json:"shard_id,omitempty"`
Locations []*Location `protobuf:"bytes,2,rep,name=locations" json:"locations,omitempty"`
}
func (m *LookupEcVolumeResponse_EcShardIdLocation) Reset() {
*m = LookupEcVolumeResponse_EcShardIdLocation{}
}
func (m *LookupEcVolumeResponse_EcShardIdLocation) String() string { return proto.CompactTextString(m) }
func (*LookupEcVolumeResponse_EcShardIdLocation) ProtoMessage() {}
func (*LookupEcVolumeResponse_EcShardIdLocation) Descriptor() ([]byte, []int) {
return fileDescriptor0, []int{29, 0}
}
func (m *LookupEcVolumeResponse_EcShardIdLocation) GetShardId() uint32 {
if m != nil {
return m.ShardId
}
return 0
}
func (m *LookupEcVolumeResponse_EcShardIdLocation) GetLocations() []*Location {
if m != nil {
return m.Locations
}
return nil
}
func init() {
proto.RegisterType((*Heartbeat)(nil), "master_pb.Heartbeat")
proto.RegisterType((*HeartbeatResponse)(nil), "master_pb.HeartbeatResponse")
@ -1189,6 +1259,9 @@ func init() {
proto.RegisterType((*TopologyInfo)(nil), "master_pb.TopologyInfo")
proto.RegisterType((*VolumeListRequest)(nil), "master_pb.VolumeListRequest")
proto.RegisterType((*VolumeListResponse)(nil), "master_pb.VolumeListResponse")
proto.RegisterType((*LookupEcVolumeRequest)(nil), "master_pb.LookupEcVolumeRequest")
proto.RegisterType((*LookupEcVolumeResponse)(nil), "master_pb.LookupEcVolumeResponse")
proto.RegisterType((*LookupEcVolumeResponse_EcShardIdLocation)(nil), "master_pb.LookupEcVolumeResponse.EcShardIdLocation")
}
// Reference imports to suppress errors if they are not otherwise used.
@ -1210,6 +1283,7 @@ type SeaweedClient interface {
CollectionList(ctx context.Context, in *CollectionListRequest, opts ...grpc.CallOption) (*CollectionListResponse, error)
CollectionDelete(ctx context.Context, in *CollectionDeleteRequest, opts ...grpc.CallOption) (*CollectionDeleteResponse, error)
VolumeList(ctx context.Context, in *VolumeListRequest, opts ...grpc.CallOption) (*VolumeListResponse, error)
LookupEcVolume(ctx context.Context, in *LookupEcVolumeRequest, opts ...grpc.CallOption) (*LookupEcVolumeResponse, error)
}
type seaweedClient struct {
@ -1336,6 +1410,15 @@ func (c *seaweedClient) VolumeList(ctx context.Context, in *VolumeListRequest, o
return out, nil
}
func (c *seaweedClient) LookupEcVolume(ctx context.Context, in *LookupEcVolumeRequest, opts ...grpc.CallOption) (*LookupEcVolumeResponse, error) {
out := new(LookupEcVolumeResponse)
err := grpc.Invoke(ctx, "/master_pb.Seaweed/LookupEcVolume", in, out, c.cc, opts...)
if err != nil {
return nil, err
}
return out, nil
}
// Server API for Seaweed service
type SeaweedServer interface {
@ -1347,6 +1430,7 @@ type SeaweedServer interface {
CollectionList(context.Context, *CollectionListRequest) (*CollectionListResponse, error)
CollectionDelete(context.Context, *CollectionDeleteRequest) (*CollectionDeleteResponse, error)
VolumeList(context.Context, *VolumeListRequest) (*VolumeListResponse, error)
LookupEcVolume(context.Context, *LookupEcVolumeRequest) (*LookupEcVolumeResponse, error)
}
func RegisterSeaweedServer(s *grpc.Server, srv SeaweedServer) {
@ -1513,6 +1597,24 @@ func _Seaweed_VolumeList_Handler(srv interface{}, ctx context.Context, dec func(
return interceptor(ctx, in, info, handler)
}
func _Seaweed_LookupEcVolume_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
in := new(LookupEcVolumeRequest)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(SeaweedServer).LookupEcVolume(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/master_pb.Seaweed/LookupEcVolume",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(SeaweedServer).LookupEcVolume(ctx, req.(*LookupEcVolumeRequest))
}
return interceptor(ctx, in, info, handler)
}
var _Seaweed_serviceDesc = grpc.ServiceDesc{
ServiceName: "master_pb.Seaweed",
HandlerType: (*SeaweedServer)(nil),
@ -1541,6 +1643,10 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{
MethodName: "VolumeList",
Handler: _Seaweed_VolumeList_Handler,
},
{
MethodName: "LookupEcVolume",
Handler: _Seaweed_LookupEcVolume_Handler,
},
},
Streams: []grpc.StreamDesc{
{
@ -1562,105 +1668,110 @@ var _Seaweed_serviceDesc = grpc.ServiceDesc{
func init() { proto.RegisterFile("master.proto", fileDescriptor0) }
var fileDescriptor0 = []byte{
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}

View file

@ -141,3 +141,36 @@ func (ms *MasterServer) VolumeList(ctx context.Context, req *master_pb.VolumeLis
return resp, nil
}
func (ms *MasterServer) LookupEcVolume(ctx context.Context, req *master_pb.LookupEcVolumeRequest) (*master_pb.LookupEcVolumeResponse, error) {
if !ms.Topo.IsLeader() {
return nil, raft.NotLeaderError
}
resp := &master_pb.LookupEcVolumeResponse{}
ecLocations, found := ms.Topo.LookupEcShards(needle.VolumeId(req.VolumeId))
if !found {
return resp, fmt.Errorf("ec volume %d not found", req.VolumeId)
}
resp.VolumeId = req.VolumeId
for shardId, shardLocations := range ecLocations.Locations {
var locations []*master_pb.Location
for _, dn := range shardLocations {
locations = append(locations, &master_pb.Location{
Url: string(dn.Id()),
PublicUrl: dn.PublicUrl,
})
}
resp.ShardIdLocations = append(resp.ShardIdLocations, &master_pb.LookupEcVolumeResponse_EcShardIdLocation{
ShardId: uint32(shardId),
Locations: locations,
})
}
return resp, nil
}

View file

@ -172,6 +172,24 @@ func (s *Store) cachedLookupEcShardLocations(ctx context.Context, ecVolume *eras
defer ecVolume.ShardLocationsLock.Unlock()
err = operation.WithMasterServerClient(s.MasterAddress, s.grpcDialOption, func(masterClient master_pb.SeaweedClient) error {
req := &master_pb.LookupEcVolumeRequest{
VolumeId: uint32(ecVolume.VolumeId),
}
resp, err := masterClient.LookupEcVolume(ctx, req)
if err != nil {
return fmt.Errorf("lookup ec volume %d: %v", ecVolume.VolumeId, err)
}
ecVolume.ShardLocationsLock.Lock()
for _, shardIdLocations := range resp.ShardIdLocations {
shardId := erasure_coding.ShardId(shardIdLocations.ShardId)
ecVolume.ShardLocations[shardId] = nil
for _, loc := range shardIdLocations.Locations {
ecVolume.ShardLocations[shardId] = append(ecVolume.ShardLocations[shardId], loc.Url)
}
}
ecVolume.ShardLocationsLock.Unlock()
return nil
})
return

View file

@ -9,7 +9,7 @@ import (
type EcShardLocations struct {
Collection string
locations [erasure_coding.TotalShardsCount][]*DataNode
Locations [erasure_coding.TotalShardsCount][]*DataNode
}
func (t *Topology) SyncDataNodeEcShards(shardInfos []*master_pb.VolumeEcShardInformationMessage, dn *DataNode) (newShards, deletedShards []*erasure_coding.EcVolumeInfo) {
@ -69,18 +69,18 @@ func NewEcShardLocations(collection string) *EcShardLocations {
}
func (loc *EcShardLocations) AddShard(shardId erasure_coding.ShardId, dn *DataNode) (added bool) {
dataNodes := loc.locations[shardId]
dataNodes := loc.Locations[shardId]
for _, n := range dataNodes {
if n.Id() == dn.Id() {
return false
}
}
loc.locations[shardId] = append(dataNodes, dn)
loc.Locations[shardId] = append(dataNodes, dn)
return true
}
func (loc *EcShardLocations) DeleteShard(shardId erasure_coding.ShardId, dn *DataNode) (deleted bool) {
dataNodes := loc.locations[shardId]
dataNodes := loc.Locations[shardId]
foundIndex := -1
for index, n := range dataNodes {
if n.Id() == dn.Id() {
@ -90,7 +90,7 @@ func (loc *EcShardLocations) DeleteShard(shardId erasure_coding.ShardId, dn *Dat
if foundIndex < 0 {
return false
}
loc.locations[shardId] = append(dataNodes[:foundIndex], dataNodes[foundIndex+1:]...)
loc.Locations[shardId] = append(dataNodes[:foundIndex], dataNodes[foundIndex+1:]...)
return true
}
@ -122,3 +122,12 @@ func (t *Topology) UnRegisterEcShards(ecShardInfos *erasure_coding.EcVolumeInfo,
locations.DeleteShard(shardId, dn)
}
}
func (t *Topology) LookupEcShards(vid needle.VolumeId)(locations *EcShardLocations, found bool) {
t.ecShardMapLock.RLock()
defer t.ecShardMapLock.RUnlock()
locations, found = t.ecShardMap[vid]
return
}