owncast/router/middleware/caching.go
Gabe Kangas 6ea9affce0
HLS video handling/storage/state refactor (#151)
* WIP with new transcoder progress monitor

* A whole different WIP in progress monitoring via local PUTs

* Use an actual hls playlist parser to rewrite master playlist

* Cleanup

* Private vs public path for thumbnail generation

* Allow each storage provider to make decisions of how to store different types of files

* Simplify inbound file writes

* Revert

* Split out set stream as connected/disconnected state methods

* Update videojs

* Add comment about the hls handler

* Rework of the offline stream state.  For #85

* Delete old unreferenced video segment files from disk

* Cleanup all segments and revert to a completely offline state after 5min

* Stop thumbnail generation on stream stop. Copy logo to thumbnail on cleanup.

* Update transcoder test

* Add comment

* Return http 200 on success to transcoder. Tweak how files are written to disk

* Force pixel color format in transcoder

* Add debugging info for S3 transfers. Add default ACL.

* Fix cleanup timer

* Reset session stats when we cleanup the session.

* Put log file back

* Update test

* File should not be a part of this commit

* Add centralized shared performance timer for use anywhere

* Post-rebase cleanup

* Support returning nil from storage provider save

* Updates to reflect package changes + other updates in master

* Fix storage providers being overwritten

* Do not return pointer in save. Support cache headers with S3 providers

* Split out videojs + vhs and point to specific working versions of them

* Bump vjs and vhs versions

* Fix test

* Remove unused

* Update upload warning message

* No longer valid comment

* Pin videojs and vhs versions
2020-10-14 14:07:38 -07:00

47 lines
1.2 KiB
Go

package middleware
import (
"net/http"
"os"
"path/filepath"
"strconv"
"github.com/amalfra/etag"
"github.com/owncast/owncast/utils"
)
//DisableCache writes the disable cache header on the responses
func DisableCache(w http.ResponseWriter) {
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
w.Header().Set("Expires", "Thu, 1 Jan 1970 00:00:00 GMT")
}
func setCacheSeconds(seconds int, w http.ResponseWriter) {
secondsStr := strconv.Itoa(seconds)
w.Header().Set("Cache-Control", "public, max-age="+secondsStr)
}
// ProcessEtags gets and sets ETags for caching purposes
func ProcessEtags(w http.ResponseWriter, r *http.Request) int {
info, err := os.Stat(filepath.Join("webroot", r.URL.Path))
if err != nil {
return 0
}
localContentEtag := etag.Generate(info.ModTime().String(), true)
if remoteEtagHeader := r.Header.Get("If-None-Match"); remoteEtagHeader != "" {
if remoteEtagHeader == localContentEtag {
return http.StatusNotModified
}
}
w.Header().Set("Etag", localContentEtag)
return 0
}
// SetCachingHeaders will set the cache control header of a response
func SetCachingHeaders(w http.ResponseWriter, r *http.Request) {
setCacheSeconds(utils.GetCacheDurationSecondsForPath(r.URL.Path), w)
}