315 lines
7.0 KiB
Go
315 lines
7.0 KiB
Go
package stores
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import (
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"context"
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"encoding/json"
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"io/ioutil"
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"math/bits"
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"os"
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"path/filepath"
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"sync"
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"github.com/filecoin-project/specs-actors/actors/abi"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/go-sectorbuilder"
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"github.com/filecoin-project/lotus/node/config"
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"github.com/filecoin-project/lotus/storage/sealmgr/sectorutil"
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)
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type StoragePath struct {
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ID ID
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Weight uint64
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LocalPath string
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CanSeal bool
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CanStore bool
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}
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// [path]/sectorstore.json
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type LocalStorageMeta struct {
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ID ID
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Weight uint64 // 0 = readonly
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CanSeal bool
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CanStore bool
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}
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type LocalStorage interface {
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GetStorage() (config.StorageConfig, error)
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SetStorage(func(*config.StorageConfig)) error
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}
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const MetaFile = "sectorstore.json"
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var pathTypes = []sectorbuilder.SectorFileType{sectorbuilder.FTUnsealed, sectorbuilder.FTSealed, sectorbuilder.FTCache}
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type Local struct {
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localStorage LocalStorage
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index SectorIndex
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urls []string
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paths map[ID]*path
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localLk sync.RWMutex
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}
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type path struct {
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local string // absolute local path
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}
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func NewLocal(ctx context.Context, ls LocalStorage, index SectorIndex, urls []string) (*Local, error) {
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l := &Local{
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localStorage: ls,
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index: index,
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urls: urls,
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paths: map[ID]*path{},
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}
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return l, l.open(ctx)
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}
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func (st *Local) OpenPath(ctx context.Context, p string) error {
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st.localLk.Lock()
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defer st.localLk.Unlock()
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mb, err := ioutil.ReadFile(filepath.Join(p, MetaFile))
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if err != nil {
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return xerrors.Errorf("reading storage metadata for %s: %w", p, err)
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}
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var meta LocalStorageMeta
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if err := json.Unmarshal(mb, &meta); err != nil {
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return xerrors.Errorf("unmarshalling storage metadata for %s: %w", p, err)
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}
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// TODO: Check existing / dedupe
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out := &path{
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local: p,
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}
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fst, err := Stat(p)
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if err != nil {
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return err
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}
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err = st.index.StorageAttach(ctx, StorageInfo{
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ID: meta.ID,
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URLs: st.urls,
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Weight: meta.Weight,
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CanSeal: meta.CanSeal,
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CanStore: meta.CanStore,
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}, fst)
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if err != nil {
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return xerrors.Errorf("declaring storage in index: %w", err)
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}
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for _, t := range pathTypes {
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ents, err := ioutil.ReadDir(filepath.Join(p, t.String()))
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if err != nil {
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if os.IsNotExist(err) {
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if err := os.MkdirAll(filepath.Join(p, t.String()), 0755); err != nil {
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return xerrors.Errorf("openPath mkdir '%s': %w", filepath.Join(p, t.String()), err)
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}
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continue
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}
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return xerrors.Errorf("listing %s: %w", filepath.Join(p, t.String()), err)
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}
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for _, ent := range ents {
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sid, err := sectorutil.ParseSectorID(ent.Name())
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if err != nil {
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return xerrors.Errorf("parse sector id %s: %w", ent.Name(), err)
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}
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if err := st.index.StorageDeclareSector(ctx, meta.ID, sid, t); err != nil {
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return xerrors.Errorf("declare sector %d(t:%d) -> %s: %w", sid, t, meta.ID, err)
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}
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}
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}
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st.paths[meta.ID] = out
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return nil
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}
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func (st *Local) open(ctx context.Context) error {
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cfg, err := st.localStorage.GetStorage()
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if err != nil {
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return xerrors.Errorf("getting local storage config: %w", err)
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}
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for _, path := range cfg.StoragePaths {
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err := st.OpenPath(ctx, path.Path)
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if err != nil {
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return xerrors.Errorf("opening path %s: %w", path.Path, err)
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}
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}
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return nil
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}
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func (st *Local) AcquireSector(ctx context.Context, sid abi.SectorID, existing sectorbuilder.SectorFileType, allocate sectorbuilder.SectorFileType, sealing bool) (sectorbuilder.SectorPaths, sectorbuilder.SectorPaths, func(), error) {
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if existing|allocate != existing^allocate {
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return sectorbuilder.SectorPaths{}, sectorbuilder.SectorPaths{}, nil, xerrors.New("can't both find and allocate a sector")
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}
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st.localLk.RLock()
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var out sectorbuilder.SectorPaths
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var storageIDs sectorbuilder.SectorPaths
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for _, fileType := range pathTypes {
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if fileType&existing == 0 {
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continue
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}
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si, err := st.index.StorageFindSector(ctx, sid, fileType, false)
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if err != nil {
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log.Warnf("finding existing sector %d(t:%d) failed: %+v", sid, fileType, err)
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continue
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}
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for _, info := range si {
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p, ok := st.paths[info.ID]
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if !ok {
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continue
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}
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if p.local == "" { // TODO: can that even be the case?
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continue
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}
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spath := filepath.Join(p.local, fileType.String(), sectorutil.SectorName(sid))
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sectorutil.SetPathByType(&out, fileType, spath)
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sectorutil.SetPathByType(&storageIDs, fileType, string(info.ID))
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existing ^= fileType
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break
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}
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}
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for _, fileType := range pathTypes {
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if fileType&allocate == 0 {
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continue
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}
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sis, err := st.index.StorageBestAlloc(ctx, fileType, sealing)
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if err != nil {
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st.localLk.RUnlock()
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return sectorbuilder.SectorPaths{}, sectorbuilder.SectorPaths{}, nil, xerrors.Errorf("finding best storage for allocating : %w", err)
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}
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var best string
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var bestID ID
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for _, si := range sis {
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p, ok := st.paths[si.ID]
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if !ok {
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continue
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}
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if p.local == "" { // TODO: can that even be the case?
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continue
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}
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if sealing && !si.CanSeal {
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continue
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}
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if !sealing && !si.CanStore {
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continue
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}
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// TODO: Check free space
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best = filepath.Join(p.local, fileType.String(), sectorutil.SectorName(sid))
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bestID = si.ID
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}
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if best == "" {
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st.localLk.RUnlock()
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return sectorbuilder.SectorPaths{}, sectorbuilder.SectorPaths{}, nil, xerrors.Errorf("couldn't find a suitable path for a sector")
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}
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sectorutil.SetPathByType(&out, fileType, best)
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sectorutil.SetPathByType(&storageIDs, fileType, string(bestID))
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allocate ^= fileType
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}
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return out, storageIDs, st.localLk.RUnlock, nil
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}
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func (st *Local) Local(ctx context.Context) ([]StoragePath, error) {
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st.localLk.RLock()
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defer st.localLk.RUnlock()
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var out []StoragePath
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for id, p := range st.paths {
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if p.local == "" {
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continue
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}
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si, err := st.index.StorageInfo(ctx, id)
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if err != nil {
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return nil, xerrors.Errorf("get storage info for %s: %w", id, err)
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}
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out = append(out, StoragePath{
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ID: id,
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Weight: si.Weight,
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LocalPath: p.local,
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CanSeal: si.CanSeal,
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CanStore: si.CanStore,
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})
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}
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return out, nil
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}
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func (st *Local) delete(ctx context.Context, sid abi.SectorID, typ sectorbuilder.SectorFileType) error {
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if bits.OnesCount(uint(typ)) != 1 {
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return xerrors.New("delete expects one file type")
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}
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si, err := st.index.StorageFindSector(ctx, sid, typ, false)
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if err != nil {
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return xerrors.Errorf("finding existing sector %d(t:%d) failed: %w", sid, typ, err)
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}
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for _, info := range si {
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p, ok := st.paths[info.ID]
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if !ok {
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continue
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}
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if p.local == "" { // TODO: can that even be the case?
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continue
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}
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spath := filepath.Join(p.local, typ.String(), sectorutil.SectorName(sid))
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log.Infof("remove %s", spath)
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if err := os.RemoveAll(spath); err != nil {
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log.Errorf("removing sector (%v) from %s: %+v", sid, spath, err)
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}
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}
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return nil
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}
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func (st *Local) FsStat(id ID) (FsStat, error) {
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st.localLk.RLock()
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defer st.localLk.RUnlock()
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p, ok := st.paths[id]
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if !ok {
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return FsStat{}, xerrors.Errorf("fsstat: path not found")
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}
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return Stat(p.local)
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}
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