feat: add Vault

Co-authored-by: Dmitry Fedotov <dmitry@uint32.ru>
Co-committed-by: Dmitry Fedotov <dmitry@uint32.ru>

storage.go

@@ -1,24 +1,26 @@
-package microkv
+package storage
 
 import (
-	"code.uint32.ru/tiny/objstore/internal/filesystem"
-	"code.uint32.ru/tiny/objstore/internal/natsobj"
+	"code.uint32.ru/tiny/storage/internal/filesystem"
+	"code.uint32.ru/tiny/storage/internal/natsobj"
+	"code.uint32.ru/tiny/storage/internal/vault"
 )
 
 var (
 	_ Storage = (*natsobj.Storage)(nil)
 	_ Storage = (*filesystem.Storage)(nil)
+	_ Storage = (*vault.Storage)(nil)
 )
 
 // Storage is a very basic object store.
 type Storage interface {
-	// Save puts file with name 'key' into the store. If a file with such name
-	// already exists it gets overwritten.
+	// Save puts object with name 'key' into the store.
+	// If a key already exists it gets overwritten.
 	Save(key string, data []byte) error
-	// Load returns contents of file named 'key'.
+	// Load returns contents of object named 'key'.
 	Load(key string) ([]byte, error)
-	// Delete removes file named 'key' from the store.
-	// If such file does not exist Delete returns nil.
+	// Delete removes object named 'key' from the store.
+	// If key does not exist Delete returns nil.
 	Delete(key string) error
 	// Close must be called when you're done working with Storage.
 	Close() error
@@ -36,3 +38,11 @@ func NewNats(bucket string, url string) (Storage, error) {
 func NewFS(path string) (Storage, error) {
 	return filesystem.Open(path)
 }
+
+// NewVault connects to Vault at addr and uses path as base path for
+// keys. Objects saved to Storage will be put at
+// /path/key as new secrets.
+// Bytes passed to storage will be base64 encoded and saved as string.
+func NewVault(token string, path string, addr string) (Storage, error) {
+	return vault.Open(token, path, addr)
+}