refactoring: first iteration without tests

Author: patapenka-alexey

kv/kv.go

@@ -9,7 +9,6 @@ type KeyValue struct {
 	Key []byte
 	// Value is the serialized representation of the value.
 	Value []byte
-
 	// ModRevision is the revision number of the last modification to this key.
 	ModRevision int64
 }

namer/generatorvalidator.go

@@ -0,0 +1,70 @@
+package namer
+
+// KeyType represents key types.
+type KeyType int
+
+const (
+	// KeyTypeValue represents data type.
+	KeyTypeValue KeyType = iota + 1
+	// KeyTypeHash represents hash of the data type.
+	KeyTypeHash
+	// KeyTypeSignature represents signature of the data type.
+	KeyTypeSignature
+)
+
+// Key defines the minimal interface required by keys.
+type Key interface {
+	Name() string     // Get object name.
+	Type() KeyType    // Get key type.
+	Property() string // Get metadata (e.g., algorithm version).
+	Raw() []byte      // Get raw data.
+	Build() string    // Reconstruct raw key string.
+}
+
+// DefaultKey implements default realization.
+type DefaultKey struct {
+	name     string  // Object identifier.
+	keytype  KeyType // Type of object (hash/signature/value).
+	property string  // Additional metadata (version/algorithm).
+	raw      []byte  // Raw key string.
+}
+
+// NewDefaultKey returns new Key object.
+func NewDefaultKey(n string, k KeyType, p string, r []byte) DefaultKey {
+	return DefaultKey{
+		name:     n,
+		keytype:  k,
+		property: p,
+		raw:      r,
+	}
+}
+
+// Name returns name of the key.
+func (k DefaultKey) Name() string {
+	return k.name
+}
+
+// Type returns type of the key.
+func (k DefaultKey) Type() KeyType {
+	return k.keytype
+}
+
+// Property returns property of the key.
+func (k DefaultKey) Property() string {
+	return k.property
+}
+
+// Raw returns raw of the key.
+func (k DefaultKey) Raw() []byte {
+	return k.raw
+}
+
+// Build should reconstruct key from signature and digest or not?
+func (k DefaultKey) Build() string {
+	return string(k.raw)
+}
+
+// String returns string representation of the `raw` field.
+func (k DefaultKey) String() string {
+	return string(k.raw)
+}