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add grpc ec shard read

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This commit is contained in:
Chris Lu
2019-05-27 11:59:03 -07:00
parent a4f3d82c57
commit b4b407e403
12 changed files with 418 additions and 168 deletions
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13
weed/storage/erasure_coding/ec_volume.go
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@@ -6,6 +6,7 @@ import (
"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
"github.com/chrislusf/seaweedfs/weed/storage/needle"
"github.com/chrislusf/seaweedfs/weed/storage/types"
)
type EcVolumeShards []*EcVolumeShard
@@ -71,19 +72,17 @@ func (shards *EcVolumeShards) ToVolumeEcShardInformationMessage() (messages []*m
return
}
func (shards *EcVolumeShards) ReadEcShardNeedle(n *needle.Needle) (int, error) {
func (shards *EcVolumeShards) LocateEcShardNeedle(n *needle.Needle) (offset types.Offset, size uint32, intervals []Interval, err error) {
shard := (*shards)[0]
// find the needle from ecx file
offset, size, err := shard.findNeedleFromEcx(n.Id)
offset, size, err = shard.findNeedleFromEcx(n.Id)
if err != nil {
return 0, err
return types.Offset{}, 0, nil, err
}
// calculate the locations in the ec shards
intervals := LocateData(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize, shard.ecxFileSize, offset.ToAcutalOffset(), size)
intervals = LocateData(ErasureCodingLargeBlockSize, ErasureCodingSmallBlockSize, shard.ecxFileSize, offset.ToAcutalOffset(), size)
// TODO read the intervals
return len(intervals), nil
return
}