added base changes for the merge cirectory api

search/Search NodeIDs Based on Hash.go

@@ -0,0 +1,24 @@
+package search
+
+import (
+	"github.com/PeernetOfficial/core/protocol"
+	"github.com/google/uuid"
+)
+
+// SearchNodeIDBasedOnHash Provides a list of NodeIDs
+// based on the hash provided
+// This is used to find out which nodes are hosting
+// which files based on the hash provided
+func (index *SearchIndexStore) SearchNodeIDBasedOnHash(hash []byte) (NodeIDs [][]byte, err error) {
+	var resultMap map[uuid.UUID]*SearchIndexRecord
+	err = index.LookupHash(SearchSelector{Hash: hash}, resultMap)
+	if err != nil {
+		return
+	}
+
+	for i := range resultMap {
+		NodeIDs = append(NodeIDs, protocol.PublicKey2NodeID(resultMap[i].PublicKey))
+	}
+
+	return
+}