94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
package api
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import (
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"fmt"
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"github.com/gin-gonic/gin"
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"github.com/photoprism/photoprism/internal/get"
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"github.com/photoprism/photoprism/internal/query"
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"github.com/photoprism/photoprism/internal/thumb"
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)
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// CoverMaxAge specifies the number of seconds to cache album covers.
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var CoverMaxAge thumb.MaxAge = 3600 // 1 hour
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type ThumbCache struct {
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FileName string
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ShareName string
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}
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type ByteCache struct {
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Data []byte
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}
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// CacheKey returns a cache key string based on namespace, uid and name.
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func CacheKey(ns, uid, name string) string {
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return fmt.Sprintf("%s:%s:%s", ns, uid, name)
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}
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// RemoveFromFolderCache removes an item from the folder cache e.g. after indexing.
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func RemoveFromFolderCache(rootName string) {
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cache := get.FolderCache()
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cacheKey := fmt.Sprintf("folder:%s:%t:%t", rootName, true, false)
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cache.Delete(cacheKey)
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if err := query.UpdateAlbumFolderCovers(); err != nil {
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log.Error(err)
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}
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log.Debugf("removed %s from cache", cacheKey)
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}
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// RemoveFromAlbumCoverCache removes covers by album UID e.g. after adding or removing photos.
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func RemoveFromAlbumCoverCache(uid string) {
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cache := get.CoverCache()
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for thumbName := range thumb.Sizes {
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cacheKey := CacheKey(albumCover, uid, string(thumbName))
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cache.Delete(cacheKey)
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log.Debugf("removed %s from cache", cacheKey)
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}
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if err := query.UpdateAlbumCovers(); err != nil {
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log.Error(err)
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}
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}
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// FlushCoverCache clears the complete cover cache.
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func FlushCoverCache() {
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get.CoverCache().Flush()
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if err := query.UpdateCovers(); err != nil {
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log.Error(err)
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}
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log.Debugf("albums: flushed cover cache")
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}
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// AddCacheHeader adds a cache control header to the response.
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func AddCacheHeader(c *gin.Context, maxAge thumb.MaxAge, public bool) {
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if public {
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c.Header("Cache-Control", fmt.Sprintf("public, max-age=%s, no-transform", maxAge.String()))
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} else {
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c.Header("Cache-Control", fmt.Sprintf("private, max-age=%s, no-transform", maxAge.String()))
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}
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}
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// AddCoverCacheHeader adds cover image cache control headers to the response.
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func AddCoverCacheHeader(c *gin.Context) {
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AddCacheHeader(c, CoverMaxAge, thumb.CachePublic)
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}
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// AddImmutableCacheHeader adds cache control headers to the response for immutable content like thumbnails.
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func AddImmutableCacheHeader(c *gin.Context) {
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if thumb.CachePublic {
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c.Header("Cache-Control", fmt.Sprintf("public, max-age=%s, no-transform, immutable", thumb.CacheMaxAge.String()))
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} else {
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c.Header("Cache-Control", fmt.Sprintf("private, max-age=%s, no-transform, immutable", thumb.CacheMaxAge.String()))
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}
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}
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