all: Convert folders to use filesystem abstraction

GitHub-Pull-Request: https://github.com/syncthing/syncthing/pull/4228

lib/fs/logfs.go

@@ -0,0 +1,158 @@
+// Copyright (C) 2016 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at https://mozilla.org/MPL/2.0/.
+
+package fs
+
+import (
+	"fmt"
+	"path/filepath"
+	"runtime"
+	"time"
+)
+
+type logFilesystem struct {
+	Filesystem
+}
+
+func getCaller() string {
+	_, file, line, ok := runtime.Caller(2)
+	if !ok {
+		return "unknown"
+	}
+	return fmt.Sprintf("%s:%d", filepath.Base(file), line)
+}
+
+func (fs *logFilesystem) Chmod(name string, mode FileMode) error {
+	err := fs.Filesystem.Chmod(name, mode)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Chmod", name, mode, err)
+	return err
+}
+
+func (fs *logFilesystem) Chtimes(name string, atime time.Time, mtime time.Time) error {
+	err := fs.Filesystem.Chtimes(name, atime, mtime)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Chtimes", name, atime, mtime, err)
+	return err
+}
+
+func (fs *logFilesystem) Create(name string) (File, error) {
+	file, err := fs.Filesystem.Create(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Create", name, file, err)
+	return file, err
+}
+
+func (fs *logFilesystem) CreateSymlink(name, target string) error {
+	err := fs.Filesystem.CreateSymlink(name, target)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "CreateSymlink", name, target, err)
+	return err
+}
+
+func (fs *logFilesystem) DirNames(name string) ([]string, error) {
+	names, err := fs.Filesystem.DirNames(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "DirNames", name, names, err)
+	return names, err
+}
+
+func (fs *logFilesystem) Lstat(name string) (FileInfo, error) {
+	info, err := fs.Filesystem.Lstat(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Lstat", name, info, err)
+	return info, err
+}
+
+func (fs *logFilesystem) Mkdir(name string, perm FileMode) error {
+	err := fs.Filesystem.Mkdir(name, perm)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Mkdir", name, perm, err)
+	return err
+}
+
+func (fs *logFilesystem) MkdirAll(name string, perm FileMode) error {
+	err := fs.Filesystem.MkdirAll(name, perm)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "MkdirAll", name, perm, err)
+	return err
+}
+
+func (fs *logFilesystem) Open(name string) (File, error) {
+	file, err := fs.Filesystem.Open(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Open", name, file, err)
+	return file, err
+}
+
+func (fs *logFilesystem) OpenFile(name string, flags int, mode FileMode) (File, error) {
+	file, err := fs.Filesystem.OpenFile(name, flags, mode)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "OpenFile", name, flags, mode, file, err)
+	return file, err
+}
+
+func (fs *logFilesystem) ReadSymlink(name string) (string, error) {
+	target, err := fs.Filesystem.ReadSymlink(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "ReadSymlink", name, target, err)
+	return target, err
+}
+
+func (fs *logFilesystem) Remove(name string) error {
+	err := fs.Filesystem.Remove(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Remove", name, err)
+	return err
+}
+
+func (fs *logFilesystem) RemoveAll(name string) error {
+	err := fs.Filesystem.RemoveAll(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "RemoveAll", name, err)
+	return err
+}
+
+func (fs *logFilesystem) Rename(oldname, newname string) error {
+	err := fs.Filesystem.Rename(oldname, newname)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Rename", oldname, newname, err)
+	return err
+}
+
+func (fs *logFilesystem) Stat(name string) (FileInfo, error) {
+	info, err := fs.Filesystem.Stat(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Stat", name, info, err)
+	return info, err
+}
+
+func (fs *logFilesystem) SymlinksSupported() bool {
+	supported := fs.Filesystem.SymlinksSupported()
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "SymlinksSupported", supported)
+	return supported
+}
+
+func (fs *logFilesystem) Walk(root string, walkFn WalkFunc) error {
+	err := fs.Filesystem.Walk(root, walkFn)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Walk", root, walkFn, err)
+	return err
+}
+
+func (fs *logFilesystem) Unhide(name string) error {
+	err := fs.Filesystem.Unhide(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Unhide", name, err)
+	return err
+}
+
+func (fs *logFilesystem) Hide(name string) error {
+	err := fs.Filesystem.Hide(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Hide", name, err)
+	return err
+}
+
+func (fs *logFilesystem) Glob(name string) ([]string, error) {
+	names, err := fs.Filesystem.Glob(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Glob", name, names, err)
+	return names, err
+}
+
+func (fs *logFilesystem) Roots() ([]string, error) {
+	roots, err := fs.Filesystem.Roots()
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Roots", roots, err)
+	return roots, err
+}
+
+func (fs *logFilesystem) Usage(name string) (Usage, error) {
+	usage, err := fs.Filesystem.Usage(name)
+	l.Debugln(getCaller(), fs.Type(), fs.URI(), "Usage", name, usage, err)
+	return usage, err
+}