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allow cache to be forcibly reset

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Modify updateTimelineCache to allow a boolean to indicate that the cache should be forcibly reset
This commit is contained in:
Colin Axner 2020-12-06 12:30:54 +01:00
parent 5ba0ea2b04
commit 3aa621ee36
1 changed files with 18 additions and 12 deletions
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30
read.go
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@ -128,7 +128,7 @@ func (app *App) FetchPublicPosts() (interface{}, error) {
}
func viewLocalTimelineAPI(app *App, w http.ResponseWriter, r *http.Request) error {
updateTimelineCache(app.timeline)
updateTimelineCache(app.timeline, false)
skip, _ := strconv.Atoi(r.FormValue("skip"))
@ -156,24 +156,30 @@ func viewLocalTimeline(app *App, w http.ResponseWriter, r *http.Request) error {
return showLocalTimeline(app, w, r, page, vars["author"], vars["tag"])
}
func updateTimelineCache(tl *localTimeline) {
// Fetch posts if enough time has passed since last cache
if tl.posts == nil || tl.m.Invalidate() {
// updateTimelineCache will reset and update the cache if it is stale or
// the boolean passed in is true.
func updateTimelineCache(tl *localTimeline, reset bool) {
if reset {
tl.Reset()
}
// Fetch posts if the cache is empty, has been reset or enough time has
// passed since last cache.
if tl.posts == nil || reset || tl.m.Invalidate() {
log.Info("[READ] Updating post cache")
var err error
var postsInterfaces interface{}
postsInterfaces, err = tl.m.Get()
postsInterfaces, err := tl.m.Get()
if err != nil {
log.Error("[READ] Unable to cache posts: %v", err)
} else {
castPosts := postsInterfaces.([]PublicPost)
tl.posts = &castPosts
}
castPosts := postsInterfaces.([]PublicPost)
tl.posts = &castPosts
}
}
func showLocalTimeline(app *App, w http.ResponseWriter, r *http.Request, page int, author, tag string) error {
updateTimelineCache(app.timeline)
updateTimelineCache(app.timeline, false)
pl := len(*(app.timeline.posts))
ttlPages := int(math.Ceil(float64(pl) / float64(app.timeline.postsPerPage)))
@ -286,7 +292,7 @@ func viewLocalTimelineFeed(app *App, w http.ResponseWriter, req *http.Request) e
return impart.HTTPError{http.StatusNotFound, "Page doesn't exist."}
}
updateTimelineCache(app.timeline)
updateTimelineCache(app.timeline, false)
feed := &Feed{
Title: app.cfg.App.SiteName + " Reader",