-
-
Notifications
You must be signed in to change notification settings - Fork 7.4k
/
prune_resources.go
116 lines (96 loc) · 2.7 KB
/
prune_resources.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
// Copyright 2017-present The Hugo Authors. All rights reserved.
//
// 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 hugolib
import (
"fmt"
"io"
"os"
"strings"
"github.com/gohugoio/hugo/helpers"
"github.com/spf13/afero"
)
// GC requires a build first.
func (h *HugoSites) GC() (int, error) {
s := h.Sites[0]
fs := h.PathSpec.BaseFs.Resources.Fs
imageCacheDir := s.ResourceSpec.GenImagePath
if len(imageCacheDir) < 10 {
panic("invalid image cache")
}
assetsCacheDir := s.ResourceSpec.GenAssetsPath
if len(assetsCacheDir) < 10 {
panic("invalid assets cache")
}
isImageInUse := func(filename string) bool {
key := strings.TrimPrefix(filename, imageCacheDir)
for _, site := range h.Sites {
if site.ResourceSpec.IsInImageCache(key) {
return true
}
}
return false
}
isAssetInUse := func(filename string) bool {
key := strings.TrimPrefix(filename, assetsCacheDir)
// These assets are stored in tuplets with an added extension to the key.
key = strings.TrimSuffix(key, helpers.Ext(key))
for _, site := range h.Sites {
if site.ResourceSpec.ResourceCache.Contains(key) {
return true
}
}
return false
}
walker := func(dirname string, inUse func(filename string) bool) (int, error) {
counter := 0
err := afero.Walk(fs, dirname, func(path string, info os.FileInfo, err error) error {
if info == nil {
return nil
}
if !strings.HasPrefix(path, dirname) {
return fmt.Errorf("Invalid state, walk outside of resource dir: %q", path)
}
if info.IsDir() {
f, err := fs.Open(path)
if err != nil {
return nil
}
defer f.Close()
_, err = f.Readdirnames(1)
if err == io.EOF {
// Empty dir.
s.Fs.Source.Remove(path)
}
return nil
}
inUse := inUse(path)
if !inUse {
err := fs.Remove(path)
if err != nil && !os.IsNotExist(err) {
s.Log.ERROR.Printf("Failed to remove %q: %s", path, err)
} else {
counter++
}
}
return nil
})
return counter, err
}
imageCounter, err1 := walker(imageCacheDir, isImageInUse)
assetsCounter, err2 := walker(assetsCacheDir, isAssetInUse)
totalCount := imageCounter + assetsCounter
if err1 != nil {
return totalCount, err1
}
return totalCount, err2
}