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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
// Copyright 2018 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 filecache
import (
"path"
"path/filepath"
"strings"
"time"
"github.com/gohugoio/hugo/helpers"
"github.com/gohugoio/hugo/hugolib/paths"
"github.com/bep/mapstructure"
"github.com/pkg/errors"
"github.com/spf13/afero"
)
const (
cachesConfigKey = "caches"
resourcesGenDir = ":resourceDir/_gen"
)
var defaultCacheConfig = cacheConfig{
MaxAge: -1, // Never expire
Dir: ":cacheDir",
}
const (
cacheKeyGetJSON = "getjson"
cacheKeyGetCSV = "getcsv"
cacheKeyImages = "images"
cacheKeyAssets = "assets"
)
var defaultCacheConfigs = map[string]cacheConfig{
cacheKeyGetJSON: defaultCacheConfig,
cacheKeyGetCSV: defaultCacheConfig,
cacheKeyImages: cacheConfig{
MaxAge: -1,
Dir: resourcesGenDir,
},
cacheKeyAssets: cacheConfig{
MaxAge: -1,
Dir: resourcesGenDir,
},
}
type cachesConfig map[string]cacheConfig
type cacheConfig struct {
// Max age of cache entries in this cache. Any items older than this will
// be removed and not returned from the cache.
// a negative value means forever, 0 means cache is disabled.
MaxAge time.Duration
// The directory where files are stored.
Dir string
}
// GetJSONCache gets the file cache for getJSON.
func (f Caches) GetJSONCache() *Cache {
return f[cacheKeyGetJSON]
}
// GetCSVCache gets the file cache for getCSV.
func (f Caches) GetCSVCache() *Cache {
return f[cacheKeyGetCSV]
}
// ImageCache gets the file cache for processed images.
func (f Caches) ImageCache() *Cache {
return f[cacheKeyImages]
}
// AssetsCache gets the file cache for assets (processed resources, SCSS etc.).
func (f Caches) AssetsCache() *Cache {
return f[cacheKeyAssets]
}
func decodeConfig(p *paths.Paths) (cachesConfig, error) {
c := make(cachesConfig)
valid := make(map[string]bool)
// Add defaults
for k, v := range defaultCacheConfigs {
c[k] = v
valid[k] = true
}
cfg := p.Cfg
m := cfg.GetStringMap(cachesConfigKey)
_, isOsFs := p.Fs.Source.(*afero.OsFs)
for k, v := range m {
cc := defaultCacheConfig
dc := &mapstructure.DecoderConfig{
Result: &cc,
DecodeHook: mapstructure.StringToTimeDurationHookFunc(),
WeaklyTypedInput: true,
}
decoder, err := mapstructure.NewDecoder(dc)
if err != nil {
return c, err
}
if err := decoder.Decode(v); err != nil {
return nil, err
}
if cc.Dir == "" {
return c, errors.New("must provide cache Dir")
}
name := strings.ToLower(k)
if !valid[name] {
return nil, errors.Errorf("%q is not a valid cache name", name)
}
c[name] = cc
}
// This is a very old flag in Hugo, but we need to respect it.
disabled := cfg.GetBool("ignoreCache")
for k, v := range c {
v.Dir = filepath.Clean(v.Dir)
dir := filepath.ToSlash(v.Dir)
parts := strings.Split(dir, "/")
first := parts[0]
if strings.HasPrefix(first, ":") {
resolved, err := resolveDirPlaceholder(p, first)
if err != nil {
return c, err
}
resolved = filepath.ToSlash(resolved)
v.Dir = filepath.FromSlash(path.Join((append([]string{resolved}, parts[1:]...))...))
} else if isOsFs && !path.IsAbs(dir) {
return c, errors.Errorf("%q must either start with a placeholder (e.g. :cacheDir, :resourceDir) or be absolute", v.Dir)
}
if disabled {
v.MaxAge = 0
}
c[k] = v
}
return c, nil
}
// Resolves :resourceDir => /myproject/resources etc., :cacheDir => ...
func resolveDirPlaceholder(p *paths.Paths, placeholder string) (string, error) {
switch strings.ToLower(placeholder) {
case ":resourcedir":
return p.AbsResourcesDir, nil
case ":cachedir":
return helpers.GetCacheDir(p.Fs.Source, p.Cfg)
}
return "", errors.Errorf("%q is not a valid placeholder (valid values are :cacheDir or :resourceDir)", placeholder)
}
|
