filling out base functionality

base/base.go

@@ -1,24 +1,41 @@
 package base
 
 import (
-	"crypto"
+	"io"
 	"os"
 	"path/filepath"
 )
 
-func InitVarBase(base string) error {
-	for _, path := range []string{"dedup/blobs", "dedup/state"} {
-		if err := os.MkdirAll(filepath.Join(base, path), 0755); err != nil {
-			return err
+func NewBase(path string, hashName string) (*Base, error) {
+	for _, p := range []string{"dedup/blobs" + hashName, "dedup/state"} {
+		if err := os.MkdirAll(filepath.Join(path, p), 0755); err != nil {
+			return nil, err
 		}
 	}
-	return nil
+	return &Base{Path: path, HashName: hashName}, nil
 }
 
 type Base struct {
-	Path string
+	Path     string
+	HashName string
 }
 
-func (b Base) HasBlob(hashType crypto.Hash, sum string) bool {
+// GetBlob store the content from src, for the sum and hashType
+func (b Base) GetBlob(sum string) (io.Reader, error) {
+	// XXX
+	return nil, nil
+}
+
+// PutBlob store the content from src, for the sum and hashType
+//
+// we take the sum up front to avoid recalculation and tempfiles
+func (b Base) PutBlob(sum string, src io.Reader) error {
+	// XXX
+	return nil
+}
+
+// HasBlob tests whether a blob with this sum exists
+func (b Base) HasBlob(sum string) bool {
+	// XXX
 	return true
 }