featurebase/filesystem.go
2020-08-31 09:02:46 -05:00

42 lines
1.2 KiB
Go

// Copyright 2017 Pilosa Corp.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package pilosa
import (
"fmt"
"net/http"
)
// Ensure nopFileSystem implements interface.
var _ FileSystem = &nopFileSystem{}
// FileSystem represents an interface for file system for serving the Lattice UI.
type FileSystem interface {
New() (http.FileSystem, error)
}
func init() {
NopFileSystem = &nopFileSystem{}
}
// NopFileSystem represents a FileSystem that returns an error if called.
var NopFileSystem FileSystem
type nopFileSystem struct{}
// New is a no-op implementation of FileSystem New method.
func (n *nopFileSystem) New() (http.FileSystem, error) {
return nil, fmt.Errorf("file system not implemented")
}