luci-go/common/dirwalk: Code for walking a directory tree efficiently

common/dirwalk/observer.go

+// Copyright 2016 The LUCI Authors. All rights reserved.
+// Use of this source code is governed under the Apache License, Version 2.0
+// that can be found in the LICENSE file.
+
+package dirwalk
+
+// Interface for receiving the results of walking a directory tree.
+//
+// For performance reasons, small files and large files are treated
+// differently.
+//
+// SmallFile and LargeFile must be called in sorted order.
+type WalkObserver interface {
+        SmallFile(filename string, alldata []byte)
+        LargeFile(filename string)
+
+        //StartDir(dirname string) error
+        //FinishDir(dirname string)
+
+        Error(pathname string, err error)
+
+        Finished()
+}