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twitchsingstools
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Lock the cache check, so we don't refresh it three times for every singer 

Signed-off-by: Martyn Ranyard <m@rtyn.berlin>
This commit is contained in:
Martyn 2020-08-01 12:34:06 +02:00
parent 3966e6e226
commit a8dbd68031
1 changed files with 27 additions and 45 deletions
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72
internal/webserver/webserver.go
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@ -6,6 +6,7 @@ import (
"math/rand"
"regexp"
"sort"
"sync"
"unicode"
irc "git.martyn.berlin/martyn/twitchsingstools/internal/irc"
@ -235,22 +236,8 @@ func AdminHandler(response http.ResponseWriter, request *http.Request) {
TopNSingers []SingerSings
ChannelKey string
}
updateCacheIfNecessary(vars["channel"])
channelData := ircBot.ChannelData[vars["channel"]]
if time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours() > 1 {
fmt.Printf("Cache of %d performances is older than an hour - %.1f hours old to be precise... fetching.\n", len(ircBot.ChannelData[vars["channel"]].VideoCache), time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours())
vids, err := fetchAllVoDs(channelData.TwitchUserID, channelData.Bearer)
if err != nil {
errCache := make([]irc.SingsVideoStruct, 0)
var ret irc.SingsVideoStruct
ret.FullTitle = "Error fetching videos: " + err.Error()
errCache = append(errCache, ret)
vids = errCache
}
updateCalculatedFields(vids)
ircBot.UpdateVideoCache(vars["channel"], vids)
} else {
fmt.Printf("Cache of %d performances is younger than an hour - %.1f hours old to be precise... not fetching.\n", len(ircBot.ChannelData[vars["channel"]].VideoCache), time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours())
}
updateCalculatedFields(channelData.VideoCache)
for _, song := range channelData.VideoCache {
if song.Duet && song.OtherSinger == "" {
@ -490,6 +477,29 @@ func (h *KVHeap) Pop() interface{} {
return x
}
var cacheLock sync.Mutex
func updateCacheIfNecessary(channel string) {
cacheLock.Lock()
channelData := ircBot.ChannelData[channel]
if time.Now().Sub(channelData.VideoCacheUpdated).Hours() > 1 {
fmt.Printf("Cache of %d performances is older than an hour - %.1f hours old to be precise... fetching.\n", len(channelData.VideoCache), time.Now().Sub(ircBot.ChannelData[channel].VideoCacheUpdated).Hours())
vids, err := fetchAllVoDs(channelData.TwitchUserID, channelData.Bearer)
if err != nil {
errCache := make([]irc.SingsVideoStruct, 0)
var ret irc.SingsVideoStruct
ret.FullTitle = "Error fetching videos: " + err.Error()
errCache = append(errCache, ret)
vids = errCache
}
updateCalculatedFields(vids)
ircBot.UpdateVideoCache(channel, vids)
} else {
fmt.Printf("Cache of %d performances is younger than an hour - %.1f hours old to be precise... not fetching.\n", len(channelData.VideoCache), time.Now().Sub(ircBot.ChannelData[channel].VideoCacheUpdated).Hours())
}
cacheLock.Unlock()
}
func calculateTopNSingers(songCache []irc.SingsVideoStruct, howMany int) []SingerSings {
songMap := map[string]int{}
songCount := 0
@ -746,22 +756,8 @@ func CSVHandler(response http.ResponseWriter, request *http.Request) {
TopNSongs []SongSings
TopNSingers []SingerSings
}
updateCacheIfNecessary(vars["channel"])
channelData := ircBot.ChannelData[vars["channel"]]
if time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours() > 1 {
fmt.Printf("Cache of %d performances is older than an hour - %.1f hours old to be precise... fetching.\n", len(ircBot.ChannelData[vars["channel"]].VideoCache), time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours())
vids, err := fetchAllVoDs(channelData.TwitchUserID, channelData.Bearer)
if err != nil {
errCache := make([]irc.SingsVideoStruct, 0)
var ret irc.SingsVideoStruct
ret.FullTitle = "Error fetching videos: " + err.Error()
errCache = append(errCache, ret)
vids = errCache
}
updateCalculatedFields(vids)
ircBot.UpdateVideoCache(vars["channel"], vids)
} else {
fmt.Printf("Cache of %d performances is younger than an hour - %.1f hours old to be precise... not fetching.\n", len(ircBot.ChannelData[vars["channel"]].VideoCache), time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours())
}
topNSongs := calculateTopNSongs(channelData.VideoCache, 10)
topNSingers := calculateTopNSingers(channelData.VideoCache, 10)
var td = TemplateData{channelData.Name, channelData.Command, channelData.ExtraStrings, channelData.JoinTime, channelData.JoinTime.Format(irc.UTCFormat), false, channelData.HasLeft, AugmentSingsVideoStructSliceForCSV(channelData.VideoCache), topNSongs, topNSingers}
@ -796,22 +792,8 @@ func JSONHandler(response http.ResponseWriter, request *http.Request) {
TopNSongs []SongSings
TopNSingers []SingerSings
}
updateCacheIfNecessary(vars["channel"])
channelData := ircBot.ChannelData[vars["channel"]]
if time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours() > 1 {
fmt.Printf("Cache of %d performances is older than an hour - %.1f hours old to be precise... fetching.\n", len(ircBot.ChannelData[vars["channel"]].VideoCache), time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours())
vids, err := fetchAllVoDs(channelData.TwitchUserID, channelData.Bearer)
if err != nil {
errCache := make([]irc.SingsVideoStruct, 0)
var ret irc.SingsVideoStruct
ret.FullTitle = "Error fetching videos: " + err.Error()
errCache = append(errCache, ret)
vids = errCache
}
updateCalculatedFields(vids)
ircBot.UpdateVideoCache(vars["channel"], vids)
} else {
fmt.Printf("Cache of %d performances is younger than an hour - %.1f hours old to be precise... not fetching.\n", len(ircBot.ChannelData[vars["channel"]].VideoCache), time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours())
}
topNSongs := calculateTopNSongs(channelData.VideoCache, 10)
topNSingers := calculateTopNSingers(channelData.VideoCache, 10)
var td = TemplateData{channelData.Name, channelData.Command, channelData.ExtraStrings, channelData.JoinTime, channelData.JoinTime.Format(irc.UTCFormat), false, channelData.HasLeft, AugmentSingsVideoStructSlice(channelData.VideoCache), topNSongs, topNSingers}