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package filer2
import (
"context"
"errors"
"time"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/stats"
"github.com/chrislusf/seaweedfs/weed/util"
)
type FilerStore interface {
// GetName gets the name to locate the configuration in filer.toml file
GetName() string
// Initialize initializes the file store
Initialize(configuration util.Configuration) error
InsertEntry(context.Context, *Entry) error
UpdateEntry(context.Context, *Entry) (err error)
// err == filer2.ErrNotFound if not found
FindEntry(context.Context, FullPath) (entry *Entry, err error)
DeleteEntry(context.Context, FullPath) (err error)
ListDirectoryEntries(ctx context.Context, dirPath FullPath, startFileName string, includeStartFile bool, limit int) ([]*Entry, error)
BeginTransaction(ctx context.Context) (context.Context, error)
CommitTransaction(ctx context.Context) error
RollbackTransaction(ctx context.Context) error
}
var ErrNotFound = errors.New("filer: no entry is found in filer store")
type FilerStoreWrapper struct {
actualStore FilerStore
}
func NewFilerStoreWrapper(store FilerStore) *FilerStoreWrapper {
if innerStore, ok := store.(*FilerStoreWrapper); ok {
return innerStore
}
return &FilerStoreWrapper{
actualStore: store,
}
}
func (fsw *FilerStoreWrapper) GetName() string {
return fsw.actualStore.GetName()
}
func (fsw *FilerStoreWrapper) Initialize(configuration util.Configuration) error {
return fsw.actualStore.Initialize(configuration)
}
func (fsw *FilerStoreWrapper) InsertEntry(ctx context.Context, entry *Entry) error {
stats.FilerStoreCounter.WithLabelValues(fsw.actualStore.GetName(), "insert").Inc()
start := time.Now()
defer func() {
stats.FilerStoreHistogram.WithLabelValues(fsw.actualStore.GetName(), "insert").Observe(time.Since(start).Seconds())
}()
filer_pb.BeforeEntrySerialization(entry.Chunks)
return fsw.actualStore.InsertEntry(ctx, entry)
}
func (fsw *FilerStoreWrapper) UpdateEntry(ctx context.Context, entry *Entry) error {
stats.FilerStoreCounter.WithLabelValues(fsw.actualStore.GetName(), "update").Inc()
start := time.Now()
defer func() {
stats.FilerStoreHistogram.WithLabelValues(fsw.actualStore.GetName(), "update").Observe(time.Since(start).Seconds())
}()
filer_pb.BeforeEntrySerialization(entry.Chunks)
return fsw.actualStore.UpdateEntry(ctx, entry)
}
func (fsw *FilerStoreWrapper) FindEntry(ctx context.Context, fp FullPath) (entry *Entry, err error) {
stats.FilerStoreCounter.WithLabelValues(fsw.actualStore.GetName(), "find").Inc()
start := time.Now()
defer func() {
stats.FilerStoreHistogram.WithLabelValues(fsw.actualStore.GetName(), "find").Observe(time.Since(start).Seconds())
}()
entry, err = fsw.actualStore.FindEntry(ctx, fp)
if err != nil {
return nil, err
}
filer_pb.AfterEntryDeserialization(entry.Chunks)
return
}
func (fsw *FilerStoreWrapper) DeleteEntry(ctx context.Context, fp FullPath) (err error) {
stats.FilerStoreCounter.WithLabelValues(fsw.actualStore.GetName(), "delete").Inc()
start := time.Now()
defer func() {
stats.FilerStoreHistogram.WithLabelValues(fsw.actualStore.GetName(), "delete").Observe(time.Since(start).Seconds())
}()
return fsw.actualStore.DeleteEntry(ctx, fp)
}
func (fsw *FilerStoreWrapper) ListDirectoryEntries(ctx context.Context, dirPath FullPath, startFileName string, includeStartFile bool, limit int) ([]*Entry, error) {
stats.FilerStoreCounter.WithLabelValues(fsw.actualStore.GetName(), "list").Inc()
start := time.Now()
defer func() {
stats.FilerStoreHistogram.WithLabelValues(fsw.actualStore.GetName(), "list").Observe(time.Since(start).Seconds())
}()
entries, err := fsw.actualStore.ListDirectoryEntries(ctx, dirPath, startFileName, includeStartFile, limit)
if err != nil {
return nil, err
}
for _, entry := range entries {
filer_pb.AfterEntryDeserialization(entry.Chunks)
}
return entries, err
}
func (fsw *FilerStoreWrapper) BeginTransaction(ctx context.Context) (context.Context, error) {
return fsw.actualStore.BeginTransaction(ctx)
}
func (fsw *FilerStoreWrapper) CommitTransaction(ctx context.Context) error {
return fsw.actualStore.CommitTransaction(ctx)
}
func (fsw *FilerStoreWrapper) RollbackTransaction(ctx context.Context) error {
return fsw.actualStore.RollbackTransaction(ctx)
}
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