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Cache the custom emoji list (#1175)

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* use emojiCache

* add emojiCacheTimestamp

* add function description

* better logging
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Meisam 2021-07-12 00:34:56 +02:00 committed by GitHub
parent 08b6c4e3cf
commit d042fd70d1
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1 changed files with 32 additions and 14 deletions
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46
controllers/emoji.go
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@ -4,9 +4,11 @@ import (
"encoding/json"
"io/ioutil"
"net/http"
"os"
"path"
"path/filepath"
"strings"
"time"
"github.com/owncast/owncast/config"
"github.com/owncast/owncast/models"
@ -17,28 +19,44 @@ import (
// to need it to be. The config is getting a bit bloated.
const emojiDir = "/img/emoji" // Relative to webroot
// GetCustomEmoji returns a list of custom emoji via the API.
func GetCustomEmoji(w http.ResponseWriter, r *http.Request) {
emojiList := make([]models.CustomEmoji, 0)
var emojiCache = make([]models.CustomEmoji, 0)
var emojiCacheTimestamp time.Time
// getCustomEmojiList returns a list of custom emoji either from the cache or from the emoji directory.
func getCustomEmojiList() []models.CustomEmoji {
fullPath := filepath.Join(config.WebRoot, emojiDir)
files, err := ioutil.ReadDir(fullPath)
emojiDirInfo, err := os.Stat(fullPath)
if err != nil {
log.Errorln(err)
// Throw HTTP 500
return
}
if emojiDirInfo.ModTime() != emojiCacheTimestamp {
log.Traceln("Emoji cache invalid")
emojiCache = make([]models.CustomEmoji, 0)
}
// Memoize this result somewhere? Right now it iterates through the
// filesystem every time the API is hit. Should you need to restart
// the server to add emoji?
for _, f := range files {
name := strings.TrimSuffix(f.Name(), path.Ext(f.Name()))
emojiPath := filepath.Join(emojiDir, f.Name())
singleEmoji := models.CustomEmoji{Name: name, Emoji: emojiPath}
emojiList = append(emojiList, singleEmoji)
if len(emojiCache) == 0 {
files, err := ioutil.ReadDir(fullPath)
if err != nil {
log.Errorln(err)
return emojiCache
}
for _, f := range files {
name := strings.TrimSuffix(f.Name(), path.Ext(f.Name()))
emojiPath := filepath.Join(emojiDir, f.Name())
singleEmoji := models.CustomEmoji{Name: name, Emoji: emojiPath}
emojiCache = append(emojiCache, singleEmoji)
}
emojiCacheTimestamp = emojiDirInfo.ModTime()
}
return emojiCache
}
// GetCustomEmoji returns a list of custom emoji via the API.
func GetCustomEmoji(w http.ResponseWriter, r *http.Request) {
emojiList := getCustomEmojiList()
if err := json.NewEncoder(w).Encode(emojiList); err != nil {
InternalErrorHandler(w, err)
}