elee
3 years ago
8 changed files with 434 additions and 1 deletions
-
2.gitignore
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4go.mod
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11go.sum
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1weed/command/imports.go
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6weed/command/scaffold/filer.toml
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348weed/filer/arangodb/arangodb_store.go
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62weed/filer/arangodb/arangodb_store_kv.go
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1weed/server/filer_server.go
@ -0,0 +1,348 @@ |
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package arangodb |
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|
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import ( |
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"context" |
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"crypto/md5" |
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"crypto/tls" |
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"encoding/binary" |
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"encoding/hex" |
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"fmt" |
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"io" |
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"time" |
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|
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"github.com/arangodb/go-driver" |
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"github.com/arangodb/go-driver/http" |
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"github.com/chrislusf/seaweedfs/weed/filer" |
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"github.com/chrislusf/seaweedfs/weed/glog" |
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb" |
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"github.com/chrislusf/seaweedfs/weed/util" |
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) |
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|
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func init() { |
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filer.Stores = append(filer.Stores, &ArangodbStore{}) |
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} |
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type ArangodbStore struct { |
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connect driver.Connection |
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client driver.Client |
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database driver.Database |
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collection driver.Collection |
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} |
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type Model struct { |
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Key string `json:"_key"` |
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Directory string `json:"directory"` |
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Name string `json:"name"` |
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Meta []uint64 `json:"meta"` |
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} |
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func (store *ArangodbStore) GetName() string { |
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return "arangodb" |
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} |
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func (store *ArangodbStore) Initialize(configuration util.Configuration, prefix string) (err error) { |
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return store.connection(configuration.GetStringSlice(prefix+"arango_host"), |
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configuration.GetString(prefix+"arango_user"), |
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configuration.GetString(prefix+"arango_pass"), |
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) |
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} |
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|
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func (store *ArangodbStore) connection(uris []string, user string, pass string) (err error) { |
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ctx, _ := context.WithTimeout(context.Background(), 10*time.Second) |
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store.connect, err = http.NewConnection(http.ConnectionConfig{ |
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Endpoints: uris, |
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TLSConfig: &tls.Config{ |
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InsecureSkipVerify: true, |
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}, |
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}) |
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if err != nil { |
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return err |
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} |
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store.client, err = driver.NewClient(driver.ClientConfig{ |
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Connection: store.connect, |
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Authentication: driver.BasicAuthentication(user, pass), |
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}) |
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if err != nil { |
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return err |
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} |
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db_name := "seaweed-filer" |
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ok, err := store.client.DatabaseExists(ctx, db_name) |
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if err != nil { |
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return err |
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} |
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if ok { |
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store.database, err = store.client.Database(ctx, db_name) |
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} else { |
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store.database, err = store.client.CreateDatabase(ctx, db_name, &driver.CreateDatabaseOptions{}) |
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} |
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if err != nil { |
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return err |
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} |
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|
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coll_name := "files" |
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ok, err = store.database.CollectionExists(ctx, coll_name) |
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if err != nil { |
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return err |
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} |
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if ok { |
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store.collection, err = store.database.Collection(ctx, coll_name) |
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} else { |
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store.collection, err = store.database.CreateCollection(ctx, coll_name, &driver.CreateCollectionOptions{}) |
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} |
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if err != nil { |
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return err |
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} |
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|
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// ensure indices
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if _, _, err = store.collection.EnsurePersistentIndex(ctx, []string{"directory", "name"}, &driver.EnsurePersistentIndexOptions{ |
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Name: "directory_name_multi", |
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Unique: true, |
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}); err != nil { |
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return err |
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} |
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if _, _, err = store.collection.EnsurePersistentIndex(ctx, []string{"directory"}, |
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&driver.EnsurePersistentIndexOptions{Name: "IDX_directory"}); err != nil { |
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return err |
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} |
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if _, _, err = store.collection.EnsureFullTextIndex(ctx, []string{"directory_fulltext"}, |
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&driver.EnsureFullTextIndexOptions{Name: "IDX_FULLTEXT_directory", MinLength: 1}); err != nil { |
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return err |
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} |
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if _, _, err = store.collection.EnsurePersistentIndex(ctx, []string{"name"}, &driver.EnsurePersistentIndexOptions{ |
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Name: "IDX_name", |
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}); err != nil { |
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return err |
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} |
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return err |
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} |
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type key int |
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const ( |
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transactionKey key = 0 |
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) |
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func (store *ArangodbStore) BeginTransaction(ctx context.Context) (context.Context, error) { |
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txn, err := store.database.BeginTransaction(ctx, driver.TransactionCollections{ |
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Exclusive: []string{"files"}, |
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}, &driver.BeginTransactionOptions{}) |
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if err != nil { |
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return nil, err |
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} |
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return context.WithValue(ctx, transactionKey, txn), nil |
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} |
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func (store *ArangodbStore) CommitTransaction(ctx context.Context) error { |
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val := ctx.Value(transactionKey) |
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cast, ok := val.(driver.TransactionID) |
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if !ok { |
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return fmt.Errorf("txn cast fail %s:", val) |
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} |
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err := store.database.CommitTransaction(ctx, cast, &driver.CommitTransactionOptions{}) |
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if err != nil { |
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return err |
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} |
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return nil |
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} |
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func (store *ArangodbStore) RollbackTransaction(ctx context.Context) error { |
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val := ctx.Value(transactionKey) |
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cast, ok := val.(driver.TransactionID) |
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if !ok { |
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return fmt.Errorf("txn cast fail %s:", val) |
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} |
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err := store.database.AbortTransaction(ctx, cast, &driver.AbortTransactionOptions{}) |
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if err != nil { |
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return err |
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} |
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return nil |
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} |
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func (store *ArangodbStore) InsertEntry(ctx context.Context, entry *filer.Entry) (err error) { |
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dir, name := entry.FullPath.DirAndName() |
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meta, err := entry.EncodeAttributesAndChunks() |
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if err != nil { |
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return fmt.Errorf("encode %s: %s", entry.FullPath, err) |
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} |
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if len(entry.Chunks) > 50 { |
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meta = util.MaybeGzipData(meta) |
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} |
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model := &Model{ |
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Key: hashString(string(entry.FullPath)), |
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Directory: dir, |
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Name: name, |
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Meta: bytesToArray(meta), |
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} |
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_, err = store.collection.CreateDocument(ctx, model) |
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if err != nil { |
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return fmt.Errorf("UpdateEntry %s: %v", entry.FullPath, err) |
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} |
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return nil |
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} |
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func (store *ArangodbStore) UpdateEntry(ctx context.Context, entry *filer.Entry) (err error) { |
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dir, name := entry.FullPath.DirAndName() |
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meta, err := entry.EncodeAttributesAndChunks() |
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if err != nil { |
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return fmt.Errorf("encode %s: %s", entry.FullPath, err) |
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} |
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if len(entry.Chunks) > 50 { |
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meta = util.MaybeGzipData(meta) |
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} |
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model := &Model{ |
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Key: hashString(string(entry.FullPath)), |
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Directory: dir, |
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Name: name, |
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Meta: bytesToArray(meta), |
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} |
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_, err = store.collection.UpdateDocument(ctx, model.Key, model) |
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if err != nil { |
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return fmt.Errorf("UpdateEntry %s: %v", entry.FullPath, err) |
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} |
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return nil |
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} |
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func (store *ArangodbStore) FindEntry(ctx context.Context, fullpath util.FullPath) (entry *filer.Entry, err error) { |
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var data Model |
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_, err = store.collection.ReadDocument(ctx, hashString(string(fullpath)), &data) |
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if driver.IsNotFound(err) { |
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return nil, filer_pb.ErrNotFound |
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} |
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if err != nil { |
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glog.Errorf("find %s: %v", fullpath, err) |
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return nil, filer_pb.ErrNotFound |
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} |
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if len(data.Meta) == 0 { |
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return nil, filer_pb.ErrNotFound |
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} |
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entry = &filer.Entry{ |
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FullPath: fullpath, |
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} |
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err = entry.DecodeAttributesAndChunks(util.MaybeDecompressData(arrayToBytes(data.Meta))) |
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if err != nil { |
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return entry, fmt.Errorf("decode %s : %v", entry.FullPath, err) |
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} |
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return entry, nil |
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} |
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func (store *ArangodbStore) DeleteEntry(ctx context.Context, fullpath util.FullPath) error { |
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_, err := store.collection.RemoveDocument(ctx, hashString(string(fullpath))) |
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if err != nil { |
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glog.Errorf("find %s: %v", fullpath, err) |
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return fmt.Errorf("delete %s : %v", fullpath, err) |
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} |
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return nil |
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} |
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func (store *ArangodbStore) DeleteFolderChildren(ctx context.Context, fullpath util.FullPath) error { |
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dir, _ := fullpath.DirAndName() |
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cur, err := store.database.Query(ctx, ` |
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for d in files |
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filter d.directory == @dir |
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remove d in files`, map[string]interface{}{"dir": dir}) |
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if err != nil { |
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return fmt.Errorf("delete %s : %v", fullpath, err) |
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} |
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defer cur.Close() |
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return nil |
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} |
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func (store *ArangodbStore) ListDirectoryPrefixedEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, prefix string, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) { |
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return lastFileName, filer.ErrUnsupportedListDirectoryPrefixed |
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} |
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func (store *ArangodbStore) ListDirectoryEntries(ctx context.Context, dirPath util.FullPath, startFileName string, includeStartFile bool, limit int64, eachEntryFunc filer.ListEachEntryFunc) (lastFileName string, err error) { |
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dir, name := dirPath.DirAndName() |
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eq := "" |
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if includeStartFile { |
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eq = "=" |
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} |
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_ = eq |
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_ = name |
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cur, err := store.database.Query(ctx, fmt.Sprintf(` |
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for d in files |
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filter d.directory == @dir |
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sort d.name desc |
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limit %d |
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return d`, limit), map[string]interface{}{ |
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"dir": dir, |
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}) |
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if err != nil { |
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return lastFileName, fmt.Errorf("failed to list directory entries: find error: %w", err) |
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} |
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defer cur.Close() |
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for cur.HasMore() { |
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var data Model |
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_, err = cur.ReadDocument(ctx, &data) |
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if err != nil { |
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break |
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} |
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entry := &filer.Entry{ |
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FullPath: util.NewFullPath(string(dirPath), data.Name), |
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} |
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lastFileName = data.Name |
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converted := arrayToBytes(data.Meta) |
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if decodeErr := entry.DecodeAttributesAndChunks(util.MaybeDecompressData(converted)); decodeErr != nil { |
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err = decodeErr |
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glog.V(0).Infof("list %s : %v", entry.FullPath, err) |
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break |
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} |
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if !eachEntryFunc(entry) { |
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break |
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} |
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} |
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return lastFileName, err |
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} |
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func (store *ArangodbStore) Shutdown() { |
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} |
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func hashString(dir string) string { |
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h := md5.New() |
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io.WriteString(h, dir) |
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b := h.Sum(nil) |
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return hex.EncodeToString(b) |
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} |
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|
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func bytesToArray(bs []byte) []uint64 { |
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out := make([]uint64, 0, 2+len(bs)/8) |
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out = append(out, uint64(len(bs))) |
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for len(bs)%8 != 0 { |
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bs = append(bs, 0) |
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} |
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for i := 0; i < len(bs); i = i + 8 { |
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out = append(out, binary.BigEndian.Uint64(bs[i:])) |
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} |
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return out |
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} |
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|
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func arrayToBytes(xs []uint64) []byte { |
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if len(xs) < 2 { |
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return []byte{} |
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} |
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first := xs[0] |
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out := make([]byte, len(xs)*8) |
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for i := 1; i < len(xs); i = i + 1 { |
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binary.BigEndian.PutUint64(out[((i-1)*8):], xs[i]) |
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} |
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return out[:first] |
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} |
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@ -0,0 +1,62 @@ |
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package arangodb |
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|
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import ( |
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"context" |
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"fmt" |
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|
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"github.com/chrislusf/seaweedfs/weed/filer" |
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"github.com/chrislusf/seaweedfs/weed/glog" |
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) |
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|
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func (store *ArangodbStore) KvPut(ctx context.Context, key []byte, value []byte) (err error) { |
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dir, name := genDirAndName(key) |
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model := &Model{ |
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Key: hashString(string(key)), |
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Directory: dir, |
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Name: name, |
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Meta: bytesToArray(value), |
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} |
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|
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exists, err := store.collection.DocumentExists(ctx, model.Key) |
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if err != nil { |
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return fmt.Errorf("kv put: %v", err) |
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} |
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if exists { |
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_, err = store.collection.UpdateDocument(ctx, model.Key, model) |
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} else { |
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_, err = store.collection.CreateDocument(ctx, model) |
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} |
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if err != nil { |
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return fmt.Errorf("kv put: %v", err) |
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} |
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|
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return nil |
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} |
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|
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func (store *ArangodbStore) KvGet(ctx context.Context, key []byte) (value []byte, err error) { |
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var model Model |
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_, err = store.collection.ReadDocument(ctx, hashString(string(key)), &model) |
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if err != nil { |
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glog.Errorf("kv get: %v", err) |
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return nil, filer.ErrKvNotFound |
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} |
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return arrayToBytes(model.Meta), nil |
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} |
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|
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func (store *ArangodbStore) KvDelete(ctx context.Context, key []byte) (err error) { |
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_, err = store.collection.RemoveDocument(ctx, hashString(string(key))) |
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if err != nil { |
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glog.Errorf("kv del: %v", err) |
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return filer.ErrKvNotFound |
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} |
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return nil |
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} |
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|
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func genDirAndName(key []byte) (dir string, name string) { |
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for len(key) < 8 { |
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key = append(key, 0) |
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} |
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dir = string(key[:8]) |
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name = string(key[8:]) |
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return |
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|
} |
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