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68 lines
1.5 KiB
68 lines
1.5 KiB
6 years ago
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// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package modtimevfs implements a virtual file system that returns a fixed
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// modification time for all files and directories.
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package modtimevfs
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import (
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"net/http"
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"os"
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"time"
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)
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type timefs struct {
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fs http.FileSystem
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t time.Time
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}
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// New returns a file system that returns constant modification time for all files.
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func New(fs http.FileSystem, t time.Time) http.FileSystem {
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return &timefs{fs: fs, t: t}
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}
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type file struct {
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http.File
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os.FileInfo
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t time.Time
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}
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func (t *timefs) Open(name string) (http.File, error) {
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f, err := t.fs.Open(name)
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if err != nil {
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return f, err
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}
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defer func() {
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if err != nil {
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f.Close()
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}
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}()
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fstat, err := f.Stat()
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if err != nil {
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return nil, err
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}
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return &file{f, fstat, t.t}, nil
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}
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// Stat implements the http.File interface.
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func (f *file) Stat() (os.FileInfo, error) {
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return f, nil
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}
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// ModTime implements the os.FileInfo interface.
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func (f *file) ModTime() time.Time {
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return f.t
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}
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