gsh-digital-services/seaweedFS
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convert needle id to ec intervals to read from

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This commit is contained in:
Chris Lu
2019-05-27 01:29:46 -07:00
parent a463759edf
commit a4f3d82c57
9 changed files with 215 additions and 105 deletions
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32
weed/storage/store_ec.go
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@@ -33,9 +33,9 @@ func (s *Store) MountEcShards(collection string, vid needle.VolumeId, shardId er
var shardBits erasure_coding.ShardBits
s.NewEcShardsChan <- master_pb.VolumeEcShardInformationMessage{
Id: uint32(vid),
Collection: collection,
EcIndexBits: uint32(shardBits.AddShardId(shardId)),
Id: uint32(vid),
Collection: collection,
EcIndexBits: uint32(shardBits.AddShardId(shardId)),
}
return nil
}
@@ -53,9 +53,9 @@ func (s *Store) UnmountEcShards(vid needle.VolumeId, shardId erasure_coding.Shar
var shardBits erasure_coding.ShardBits
message := master_pb.VolumeEcShardInformationMessage{
Id: uint32(vid),
Collection: ecShard.Collection,
EcIndexBits: uint32(shardBits.AddShardId(shardId)),
Id: uint32(vid),
Collection: ecShard.Collection,
EcIndexBits: uint32(shardBits.AddShardId(shardId)),
}
for _, location := range s.Locations {
@@ -69,7 +69,7 @@ func (s *Store) UnmountEcShards(vid needle.VolumeId, shardId erasure_coding.Shar
return fmt.Errorf("UnmountEcShards %d.%d not found on disk", vid, shardId)
}
func (s *Store) findEcShard(vid needle.VolumeId, shardId erasure_coding.ShardId) (*erasure_coding.EcVolumeShard, bool) {
func (s *Store) findEcShard(vid needle.VolumeId, shardId erasure_coding.ShardId) (*erasure_coding.EcVolumeShard, bool) {
for _, location := range s.Locations {
if v, found := location.FindEcShard(vid, shardId); found {
return v, found
@@ -77,3 +77,21 @@ func (s *Store) findEcShard(vid needle.VolumeId, shardId erasure_coding.ShardId)
}
return nil, false
}
func (s *Store) HasEcShard(vid needle.VolumeId) (erasure_coding.EcVolumeShards, bool) {
for _, location := range s.Locations {
if s, found := location.HasEcShard(vid); found {
return s, true
}
}
return nil, false
}
func (s *Store) ReadEcShardNeedle(vid needle.VolumeId, n *needle.Needle) (int, error) {
for _, location := range s.Locations {
if ecShards, found := location.HasEcShard(vid); found {
return ecShards.ReadEcShardNeedle(n)
}
}
return 0, fmt.Errorf("ec shard %d not found", vid)
}