Jakob Borg
42 lines
1.5 KiB
Go
42 lines
1.5 KiB
Go
// 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 "sync"
|
|
|
|
type FilesystemType string
|
|
|
|
// Option modifies a filesystem at creation. An option might be specific
|
|
// to a filesystem-type.
|
|
//
|
|
// String is used to detect options with the same effect, i.e. must be different
|
|
// for options with different effects. Meaning if an option has parameters, a
|
|
// representation of those must be part of the returned string.
|
|
type Option interface {
|
|
String() string
|
|
apply(Filesystem) Filesystem
|
|
}
|
|
|
|
// Factory function type for constructing a custom file system. It takes the URI
|
|
// and options as its parameters.
|
|
type FilesystemFactory func(string, ...Option) (Filesystem, error)
|
|
|
|
// For each registered file system type, a function to construct a file system.
|
|
var (
|
|
filesystemFactories map[FilesystemType]FilesystemFactory = make(map[FilesystemType]FilesystemFactory)
|
|
filesystemFactoriesMutex sync.Mutex = sync.Mutex{}
|
|
)
|
|
|
|
// Register a function to be called when a filesystem is to be constructed with
|
|
// the specified fsType. The function will receive the URI for the file system as well
|
|
// as all options.
|
|
func RegisterFilesystemType(fsType FilesystemType, fn FilesystemFactory) {
|
|
filesystemFactoriesMutex.Lock()
|
|
defer filesystemFactoriesMutex.Unlock()
|
|
filesystemFactories[fsType] = fn
|
|
}
|