gsh-digital-services/seaweedFS
5
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

volum server passes grpc option and master location to store

Browse Source
This commit is contained in:
Chris Lu
2019-05-27 21:22:23 -07:00
parent ac1ba3b667
commit 03b9291e5d
6 changed files with 81 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
weed/storage/store_ec.go
View File

@@ -1,10 +1,14 @@
package storage
import (
"context"
"fmt"
"io"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/operation"
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/pb/volume_server_pb"
"github.com/chrislusf/seaweedfs/weed/storage/erasure_coding"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
)
@@ -87,7 +91,7 @@ func (s *Store) HasEcShard(vid needle.VolumeId) (erasure_coding.EcVolumeShards,
return nil, false
}
func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, error) {
func (s *Store) ReadEcShardNeedle(ctx context.Context, vid needle.VolumeId, n *needle.Needle) (int, error) {
for _, location := range s.Locations {
if localEcShards, found := location.HasEcShard(vid); found {
@@ -96,7 +100,7 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
return 0, err
}
bytes, err := s.ReadEcShardIntervals(vid, localEcShards, intervals)
bytes, err := s.readEcShardIntervals(ctx, vid, localEcShards, intervals)
if err != nil {
return 0, fmt.Errorf("ReadEcShardIntervals: %v", err)
}
@@ -114,9 +118,14 @@ func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, e
return 0, fmt.Errorf("ec shard %d not found", vid)
}
func (s *Store) ReadEcShardIntervals(vid needle.VolumeId, localEcShards erasure_coding.EcVolumeShards, intervals []erasure_coding.Interval) (data []byte, err error) {
func (s *Store) readEcShardIntervals(ctx context.Context, vid needle.VolumeId, localEcShards erasure_coding.EcVolumeShards, intervals []erasure_coding.Interval) (data []byte, err error) {
shardLocations, err := s.cachedLookupEcShardLocations(ctx, vid)
if err != nil {
return nil, fmt.Errorf("failed to locate shard via master grpc %s: %v", s.MasterGrpcAddress, err)
}
for i, interval := range intervals {
if d, e := s.readOneEcShardInterval(vid, localEcShards, interval); e != nil {
if d, e := s.readOneEcShardInterval(ctx, vid, localEcShards, shardLocations, interval); e != nil {
return nil, e
} else {
if i == 0 {
@@ -129,7 +138,7 @@ func (s *Store) ReadEcShardIntervals(vid needle.VolumeId, localEcShards erasure_
return
}
func (s *Store) readOneEcShardInterval(vid needle.VolumeId, localEcShards erasure_coding.EcVolumeShards, interval erasure_coding.Interval) (data []byte, err error) {
func (s *Store) readOneEcShardInterval(ctx context.Context, vid needle.VolumeId, localEcShards erasure_coding.EcVolumeShards, shardLocations map[erasure_coding.ShardId]string, interval erasure_coding.Interval) (data []byte, err error) {
shardId, actualOffset := interval.ToShardIdAndOffset(erasure_coding.ErasureCodingLargeBlockSize, erasure_coding.ErasureCodingSmallBlockSize)
data = make([]byte, interval.Size)
if shard, found := localEcShards.FindEcVolumeShard(shardId); found {
@@ -137,14 +146,57 @@ func (s *Store) readOneEcShardInterval(vid needle.VolumeId, localEcShards erasur
return
}
} else {
s.readOneRemoteEcShardInterval(vid, shardId, data, actualOffset)
sourceDataNode := shardLocations[shardId]
_, err = s.readOneRemoteEcShardInterval(ctx, sourceDataNode, vid, shardId, data, actualOffset)
if err != nil {
glog.V(1).Infof("failed to read from %s for ec shard %d.%d : %v", sourceDataNode, vid, shardId, err)
}
}
return
}
func (s *Store) readOneRemoteEcShardInterval(vid needle.VolumeId, shardId erasure_coding.ShardId, buf []byte, offset int64) (n int, err error) {
func (s *Store) cachedLookupEcShardLocations(ctx context.Context, vid needle.VolumeId) (shardLocations map[erasure_coding.ShardId]string, err error) {
return
}
func (s *Store) readOneRemoteEcShardInterval(ctx context.Context, sourceDataNode string, vid needle.VolumeId, shardId erasure_coding.ShardId, buf []byte, offset int64) (n int, err error) {
err = operation.WithVolumeServerClient(sourceDataNode, s.grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
// copy data slice
shardReadClient, err := client.VolumeEcShardRead(ctx, &volume_server_pb.VolumeEcShardReadRequest{
VolumeId: uint32(vid),
ShardId: uint32(shardId),
Offset: offset,
Size: int64(len(buf)),
})
if err != nil {
return fmt.Errorf("failed to start reading ec shard %d.%d from %s: %v", vid, shardId, sourceDataNode, err)
}
for {
resp, receiveErr := shardReadClient.Recv()
if receiveErr == io.EOF {
break
}
if receiveErr != nil {
return fmt.Errorf("receiving ec shard %d.%d from %s: %v", vid, shardId, sourceDataNode, err)
}
copy(buf[n:n+len(resp.Data)], resp.Data)
n += len(resp.Data)
}
return nil
})
if err != nil {
return 0, fmt.Errorf("read ec shard %d.%d from %s: %v", vid, shardId, sourceDataNode, err)
}
return
}
func (s *Store) recoverOneRemoteEcShardInterval(ctx context.Context, string, vid needle.VolumeId, shardIdToRecover erasure_coding.ShardId, buf []byte, offset int64) (n int, err error) {
glog.V(1).Infof("recover ec shard %d.%d from other locations", vid, shardIdToRecover)
// TODO add recovering
return 0, fmt.Errorf("recover is not implemented yet")
}