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filetype.go
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filetype.go
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package storiface
import (
"fmt"
"github.com/filecoin-project/go-state-types/abi"
)
const (
FTUnsealed SectorFileType = 1 << iota
FTSealed
FTCache
FTUpdate
FTUpdateCache
FileTypes = iota
)
var PathTypes = []SectorFileType{FTUnsealed, FTSealed, FTCache, FTUpdate, FTUpdateCache}
const (
FTNone SectorFileType = 0
)
const FSOverheadDen = 10
var FSOverheadSeal = map[SectorFileType]int{ // 10x overheads
FTUnsealed: FSOverheadDen,
FTSealed: FSOverheadDen,
FTUpdate: FSOverheadDen,
FTUpdateCache: FSOverheadDen * 2,
FTCache: 141, // 11 layers + D(2x ssize) + C + R'
}
// sector size * disk / fs overhead. FSOverheadDen is like the unit of sector size
var FsOverheadFinalized = map[SectorFileType]int{
FTUnsealed: FSOverheadDen,
FTSealed: FSOverheadDen,
FTUpdate: FSOverheadDen * 2, // XXX: we should clear the update cache on Finalize???
FTUpdateCache: FSOverheadDen,
FTCache: 2,
}
type SectorFileType int
func (t SectorFileType) String() string {
switch t {
case FTUnsealed:
return "unsealed"
case FTSealed:
return "sealed"
case FTCache:
return "cache"
case FTUpdate:
return "update"
case FTUpdateCache:
return "update-cache"
default:
return fmt.Sprintf("<unknown %d>", t)
}
}
func (t SectorFileType) Has(singleType SectorFileType) bool {
return t&singleType == singleType
}
func (t SectorFileType) SealSpaceUse(ssize abi.SectorSize) (uint64, error) {
var need uint64
for _, pathType := range PathTypes {
if !t.Has(pathType) {
continue
}
oh, ok := FSOverheadSeal[pathType]
if !ok {
return 0, fmt.Errorf("no seal overhead info for %s", pathType)
}
need += uint64(oh) * uint64(ssize) / FSOverheadDen
}
return need, nil
}
func (t SectorFileType) StoreSpaceUse(ssize abi.SectorSize) (uint64, error) {
var need uint64
for _, pathType := range PathTypes {
if !t.Has(pathType) {
continue
}
oh, ok := FsOverheadFinalized[pathType]
if !ok {
return 0, fmt.Errorf("no finalized overhead info for %s", pathType)
}
need += uint64(oh) * uint64(ssize) / FSOverheadDen
}
return need, nil
}
func (t SectorFileType) All() [FileTypes]bool {
var out [FileTypes]bool
for i := range out {
out[i] = t&(1<<i) > 0
}
return out
}
type SectorPaths struct {
ID abi.SectorID
Unsealed string
Sealed string
Cache string
Update string
UpdateCache string
}
func ParseSectorID(baseName string) (abi.SectorID, error) {
var n abi.SectorNumber
var mid abi.ActorID
read, err := fmt.Sscanf(baseName, "s-t0%d-%d", &mid, &n)
if err != nil {
return abi.SectorID{}, fmt.Errorf("sscanf sector name ('%s'): %w", baseName, err)
}
if read != 2 {
return abi.SectorID{}, fmt.Errorf("parseSectorID expected to scan 2 values, got %d", read)
}
return abi.SectorID{
Miner: mid,
Number: n,
}, nil
}
func SectorName(sid abi.SectorID) string {
return fmt.Sprintf("s-t0%d-%d", sid.Miner, sid.Number)
}
func PathByType(sps SectorPaths, fileType SectorFileType) string {
switch fileType {
case FTUnsealed:
return sps.Unsealed
case FTSealed:
return sps.Sealed
case FTCache:
return sps.Cache
case FTUpdate:
return sps.Update
case FTUpdateCache:
return sps.UpdateCache
}
panic("requested unknown path type")
}
func SetPathByType(sps *SectorPaths, fileType SectorFileType, p string) {
switch fileType {
case FTUnsealed:
sps.Unsealed = p
case FTSealed:
sps.Sealed = p
case FTCache:
sps.Cache = p
case FTUpdate:
sps.Update = p
case FTUpdateCache:
sps.UpdateCache = p
}
}