mirror of
https://github.com/opencloud-eu/opencloud.git
synced 2026-10-05 02:15:15 -04:00
Jörn Friedrich Dreyer
5c3b7f8890
webdav now owns the complete thumbnail pipeline: stat -> validate -> cache check -> download -> preprocess -> generate -> cache -> respond. The thumbnails service is used only as a stateless imagor-compatible image resizer via its /unsafe push endpoint. - New ThumbnailWorkflow drives the pipeline; space-scoped refs are anchored at the space ResourceId and downloads authenticate with the user's x-access-token. - Preprocessing (audio/geogebra/text/gif) moves from the thumbnails service into webdav (services/webdav/pkg/preprocessor). - Thumbnail caching moves to webdav (memory/file/s3 backends, file cache off by default); resolutions are snapped orientation-aware in webdav. - Generator URL defaults to the local thumbnails service; new WEBDAV_* config for generator, cache and resolutions. - Acceptance tests updated for the new sizing/processor behavior.
79 lines
1.4 KiB
Go
79 lines
1.4 KiB
Go
package cache
|
|
|
|
import (
|
|
"errors"
|
|
"io/fs"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
// FileCache stores thumbnails on the local filesystem using hierarchical directories.
|
|
type FileCache struct {
|
|
dir string
|
|
}
|
|
|
|
func NewFileCache(dir string) *FileCache {
|
|
return &FileCache{dir: dir}
|
|
}
|
|
|
|
// The cache key is already a hierarchical relative path (built to match main's
|
|
// BuildKey layout), so the on-disk location is simply the cache dir joined with it.
|
|
func (c *FileCache) Get(key string) ([]byte, error) {
|
|
path := filepath.Join(c.dir, key)
|
|
|
|
data, err := os.ReadFile(path)
|
|
if err != nil {
|
|
if errors.Is(err, fs.ErrNotExist) {
|
|
return nil, ErrCacheMiss
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
result := make([]byte, len(data))
|
|
copy(result, data)
|
|
return result, nil
|
|
}
|
|
|
|
func (c *FileCache) Put(key string, data []byte) error {
|
|
imgPath := filepath.Join(c.dir, key)
|
|
dir := filepath.Dir(imgPath)
|
|
|
|
if _, err := os.Stat(imgPath); err == nil {
|
|
return nil
|
|
}
|
|
|
|
if err := os.MkdirAll(dir, 0700); err != nil {
|
|
return err
|
|
}
|
|
|
|
f, err := os.CreateTemp(dir, "tmpthumb")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
tempPath := f.Name()
|
|
|
|
if _, err := f.Write(data); err != nil {
|
|
f.Close()
|
|
os.Remove(tempPath)
|
|
return err
|
|
}
|
|
|
|
if err := f.Sync(); err != nil {
|
|
f.Close()
|
|
os.Remove(tempPath)
|
|
return err
|
|
}
|
|
|
|
if err := f.Close(); err != nil {
|
|
os.Remove(tempPath)
|
|
return err
|
|
}
|
|
|
|
if err := os.Rename(tempPath, imgPath); err != nil {
|
|
os.Remove(tempPath)
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|