mirror of
https://github.com/gohugoio/hugo.git
synced 2024-12-24 16:31:15 +00:00
125 lines
3.8 KiB
Go
125 lines
3.8 KiB
Go
// Copyright 2019 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 resources
|
|
|
|
import (
|
|
"image"
|
|
"io"
|
|
|
|
"github.com/gohugoio/hugo/common/hugio"
|
|
"github.com/gohugoio/hugo/resources/images"
|
|
|
|
"github.com/gohugoio/hugo/cache/dynacache"
|
|
"github.com/gohugoio/hugo/cache/filecache"
|
|
"github.com/gohugoio/hugo/helpers"
|
|
)
|
|
|
|
// ImageCache is a cache for image resources. The backing caches are shared between all sites.
|
|
type ImageCache struct {
|
|
pathSpec *helpers.PathSpec
|
|
|
|
fcache *filecache.Cache
|
|
mcache *dynacache.Partition[string, *resourceAdapter]
|
|
}
|
|
|
|
func (c *ImageCache) getOrCreate(
|
|
parent *imageResource, conf images.ImageConfig,
|
|
createImage func() (*imageResource, image.Image, error),
|
|
) (*resourceAdapter, error) {
|
|
relTarget := parent.relTargetPathFromConfig(conf)
|
|
relTargetPath := relTarget.TargetPath()
|
|
memKey := relTargetPath
|
|
|
|
// For multihost sites, we duplicate language versions of the same resource,
|
|
// so we need to include the language in the key.
|
|
// Note that we don't need to include the language in the file cache key,
|
|
// as the hash will take care of any different content.
|
|
if c.pathSpec.Cfg.IsMultihost() {
|
|
memKey = c.pathSpec.Lang() + memKey
|
|
}
|
|
memKey = dynacache.CleanKey(memKey)
|
|
|
|
v, err := c.mcache.GetOrCreate(memKey, func(key string) (*resourceAdapter, error) {
|
|
var img *imageResource
|
|
|
|
// These funcs are protected by a named lock.
|
|
// read clones the parent to its new name and copies
|
|
// the content to the destinations.
|
|
read := func(info filecache.ItemInfo, r io.ReadSeeker) error {
|
|
img = parent.clone(nil)
|
|
targetPath := img.getResourcePaths()
|
|
targetPath.File = relTarget.File
|
|
img.setTargetPath(targetPath)
|
|
img.setOpenSource(func() (hugio.ReadSeekCloser, error) {
|
|
return c.fcache.Fs.Open(info.Name)
|
|
})
|
|
img.setSourceFilenameIsHash(true)
|
|
img.setMediaType(conf.TargetFormat.MediaType())
|
|
|
|
if err := img.InitConfig(r); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// create creates the image and encodes it to the cache (w).
|
|
create := func(info filecache.ItemInfo, w io.WriteCloser) (err error) {
|
|
defer w.Close()
|
|
|
|
var conv image.Image
|
|
img, conv, err = createImage()
|
|
if err != nil {
|
|
return
|
|
}
|
|
targetPath := img.getResourcePaths()
|
|
targetPath.File = relTarget.File
|
|
img.setTargetPath(targetPath)
|
|
img.setOpenSource(func() (hugio.ReadSeekCloser, error) {
|
|
return c.fcache.Fs.Open(info.Name)
|
|
})
|
|
return img.EncodeTo(conf, conv, w)
|
|
}
|
|
|
|
// Now look in the file cache.
|
|
|
|
// The definition of this counter is not that we have processed that amount
|
|
// (e.g. resized etc.), it can be fetched from file cache,
|
|
// but the count of processed image variations for this site.
|
|
c.pathSpec.ProcessingStats.Incr(&c.pathSpec.ProcessingStats.ProcessedImages)
|
|
|
|
_, err := c.fcache.ReadOrCreate(relTargetPath, read, create)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
imgAdapter := newResourceAdapter(parent.getSpec(), true, img)
|
|
|
|
return imgAdapter, nil
|
|
})
|
|
|
|
return v, err
|
|
}
|
|
|
|
func newImageCache(fileCache *filecache.Cache, memCache *dynacache.Cache, ps *helpers.PathSpec) *ImageCache {
|
|
return &ImageCache{
|
|
fcache: fileCache,
|
|
mcache: dynacache.GetOrCreatePartition[string, *resourceAdapter](
|
|
memCache,
|
|
"/imgs",
|
|
dynacache.OptionsPartition{ClearWhen: dynacache.ClearOnChange, Weight: 70},
|
|
),
|
|
pathSpec: ps,
|
|
}
|
|
}
|