113 lines
3 KiB
Go
113 lines
3 KiB
Go
package blobovniczatree
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import (
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"context"
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"errors"
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"os"
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"path/filepath"
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"strings"
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"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
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"go.uber.org/zap"
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)
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var errFailedToChangeExtensionReadOnly = errors.New("failed to change blobovnicza extension: read only mode")
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// Open opens blobovnicza tree.
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func (b *Blobovniczas) Open(readOnly bool) error {
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b.readOnly = readOnly
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b.metrics.SetMode(readOnly)
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b.openManagers()
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return nil
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}
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// Init initializes blobovnicza tree.
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//
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// Should be called exactly once.
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func (b *Blobovniczas) Init() error {
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b.log.Debug(logs.BlobovniczatreeInitializingBlobovniczas)
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b.log.Debug(logs.BlobovniczaTreeFixingFileExtensions)
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if err := b.addDBExtensionToDBs(b.rootPath, 0); err != nil {
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b.log.Error(logs.BlobovniczaTreeFixingFileExtensionsFailed, zap.Error(err))
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return err
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}
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b.log.Debug(logs.BlobovniczaTreeFixingFileExtensionsCompletedSuccessfully)
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if b.readOnly {
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b.log.Debug(logs.BlobovniczatreeReadonlyModeSkipBlobovniczasInitialization)
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return nil
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}
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return b.iterateLeaves(context.TODO(), func(p string) (bool, error) {
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shBlz := b.getBlobovniczaWithoutCaching(p)
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_, err := shBlz.Open()
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if err != nil {
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return true, err
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}
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defer shBlz.Close()
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b.log.Debug(logs.BlobovniczatreeBlobovniczaSuccessfullyInitializedClosing, zap.String("id", p))
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return false, nil
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})
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}
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func (b *Blobovniczas) openManagers() {
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b.commondbManager.Open() // order important
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b.activeDBManager.Open()
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b.dbCache.Open()
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}
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// Close implements common.Storage.
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func (b *Blobovniczas) Close() error {
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b.dbCache.Close() // order important
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b.activeDBManager.Close()
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b.commondbManager.Close()
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return nil
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}
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// returns blobovnicza with path p
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//
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// If blobovnicza is already cached, instance from cache is returned w/o changes.
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func (b *Blobovniczas) getBlobovnicza(p string) *sharedDB {
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return b.dbCache.GetOrCreate(p)
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}
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func (b *Blobovniczas) getBlobovniczaWithoutCaching(p string) *sharedDB {
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return b.commondbManager.GetByPath(p)
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}
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func (b *Blobovniczas) addDBExtensionToDBs(path string, depth uint64) error {
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entries, err := os.ReadDir(path)
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if os.IsNotExist(err) && depth == 0 {
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return nil
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}
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for _, entry := range entries {
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if entry.IsDir() {
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if err := b.addDBExtensionToDBs(filepath.Join(path, entry.Name()), depth+1); err != nil {
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return err
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}
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continue
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}
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if strings.HasSuffix(entry.Name(), dbExtension) {
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continue
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}
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if b.readOnly {
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return errFailedToChangeExtensionReadOnly
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}
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sourcePath := filepath.Join(path, entry.Name())
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targetPath := filepath.Join(path, entry.Name()+dbExtension)
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b.log.Debug(logs.BlobovniczaTreeFixingFileExtensionForFile, zap.String("source", sourcePath), zap.String("target", targetPath))
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if err := os.Rename(sourcePath, targetPath); err != nil {
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b.log.Error(logs.BlobovniczaTreeFixingFileExtensionFailed, zap.String("source", sourcePath), zap.String("target", targetPath), zap.Error(err))
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return err
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}
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b.log.Debug(logs.BlobovniczaTreeFixingFileExtensionCompletedSuccessfully, zap.String("source", sourcePath), zap.String("target", targetPath))
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}
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return nil
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}
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