feat: implement lfu based cache strategy
arcad/edge/pipeline/head This commit looks good
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arcad/edge/pipeline/head This commit looks good
Details
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parent
b9c08f647c
commit
bca0a919ff
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@ -1,4 +1,4 @@
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RUN_APP_ARGS=""
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#EDGE_DOCUMENTSTORE_DSN="rpc://localhost:3001/documentstore?tenant=local&appId=%APPID%"
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#EDGE_BLOBSTORE_DSN="cache://localhost:3001/blobstore?driver=rpc&tenant=local&appId=%APPID%"
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#EDGE_BLOBSTORE_DSN="cache://localhost:3001/blobstore?driver=rpc&tenant=local&appId=%APPID%&blobCacheStoreType=fs&blobCacheStoreBaseDir=data/cache/%APPID%&blobCacheSize=64MB"
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#EDGE_SHARESTORE_DSN="rpc://localhost:3001/sharestore?tenant=local"
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3
go.mod
3
go.mod
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@ -3,14 +3,15 @@ module forge.cadoles.com/arcad/edge
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go 1.21
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require (
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github.com/allegro/bigcache/v3 v3.1.0
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github.com/getsentry/sentry-go v0.25.0
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github.com/hashicorp/golang-lru/v2 v2.0.7
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github.com/hashicorp/mdns v1.0.5
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github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf
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github.com/jackc/puddle/v2 v2.2.1
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github.com/keegancsmith/rpc v1.3.0
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github.com/klauspost/compress v1.16.6
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github.com/lestrrat-go/jwx/v2 v2.0.8
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github.com/mitchellh/hashstructure/v2 v2.0.2
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github.com/ulikunitz/xz v0.5.11
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go.uber.org/goleak v1.3.0
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modernc.org/sqlite v1.20.4
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6
go.sum
6
go.sum
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@ -37,8 +37,6 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
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cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
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cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
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dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
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github.com/Bornholm/bigcache v0.0.0-20231201111725-1ddf51584cad h1:PTOf0L/YjiVis5LYzJmi7WqttJ/h/DU6h06aJ24Kpbg=
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github.com/Bornholm/bigcache v0.0.0-20231201111725-1ddf51584cad/go.mod h1:+q+mA6jGsjfsZ2HzhVSk38qDbX2/ZBJ7Yyciv75Ruo0=
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github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
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github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
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github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0=
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@ -208,6 +206,8 @@ github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:
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github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
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github.com/igm/sockjs-go/v3 v3.0.2 h1:2m0k53w0DBiGozeQUIEPR6snZFmpFpYvVsGnfLPNXbE=
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github.com/igm/sockjs-go/v3 v3.0.2/go.mod h1:UqchsOjeagIBFHvd+RZpLaVRbCwGilEC08EDHsD1jYE=
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github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf h1:FtEj8sfIcaaBfAKrE1Cwb61YDtYq9JxChK1c7AKce7s=
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github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf/go.mod h1:yrqSXGoD/4EKfF26AOGzscPOgTTJcyAwM2rpixWT+t4=
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github.com/jackc/puddle/v2 v2.2.1 h1:RhxXJtFG022u4ibrCSMSiu5aOq1i77R3OHKNJj77OAk=
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github.com/jackc/puddle/v2 v2.2.1/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
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github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
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@ -258,6 +258,8 @@ github.com/miekg/dns v0.0.0-20161006100029-fc4e1e2843d8/go.mod h1:W1PPwlIAgtquWB
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github.com/miekg/dns v1.1.41/go.mod h1:p6aan82bvRIyn+zDIv9xYNUpwa73JcSh9BKwknJysuI=
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github.com/miekg/dns v1.1.53 h1:ZBkuHr5dxHtB1caEOlZTLPo7D3L3TWckgUUs/RHfDxw=
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github.com/miekg/dns v1.1.53/go.mod h1:uInx36IzPl7FYnDcMeVWxj9byh7DutNykX4G9Sj60FY=
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github.com/mitchellh/hashstructure/v2 v2.0.2 h1:vGKWl0YJqUNxE8d+h8f6NJLcCJrgbhC4NcD46KavDd4=
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github.com/mitchellh/hashstructure/v2 v2.0.2/go.mod h1:MG3aRVU/N29oo/V/IhBX8GR/zz4kQkprJgF2EVszyDE=
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github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
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github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
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github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
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@ -6,17 +6,16 @@ import (
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"io"
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"forge.cadoles.com/arcad/edge/pkg/storage"
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"github.com/allegro/bigcache/v3"
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"github.com/hashicorp/golang-lru/v2/expirable"
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"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
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"github.com/pkg/errors"
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"gitlab.com/wpetit/goweb/logger"
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)
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type BlobBucket struct {
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bucket storage.BlobBucket
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contentCache *bigcache.BigCache
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blobInfoCache *expirable.LRU[string, storage.BlobInfo]
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bucketCache *expirable.LRU[string, storage.BlobBucket]
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blobCache *lfu.Cache[string, []byte]
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bucketCache *lfu.Cache[string, storage.BlobBucket]
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blobInfoCache *lfu.Cache[string, storage.BlobInfo]
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}
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// Close implements storage.BlobBucket.
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@ -39,7 +38,16 @@ func (b *BlobBucket) Delete(ctx context.Context, id storage.BlobID) error {
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// Get implements storage.BlobBucket.
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func (b *BlobBucket) Get(ctx context.Context, id storage.BlobID) (storage.BlobInfo, error) {
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key := b.getCacheKey(id)
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if blobInfo, ok := b.blobInfoCache.Get(key); ok {
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blobInfo, err := b.blobInfoCache.Get(key)
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if err != nil && !errors.Is(err, lfu.ErrNotFound) {
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logger.Error(
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ctx, "could not retrieve blob info from cache",
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logger.F("cacheKey", key),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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if blobInfo != nil {
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logger.Debug(
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ctx, "found blob info in cache",
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logger.F("cacheKey", key),
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@ -52,13 +60,25 @@ func (b *BlobBucket) Get(ctx context.Context, id storage.BlobID) (storage.BlobIn
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if err != nil {
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if errors.Is(err, storage.ErrBucketClosed) {
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b.clearCache(ctx, id)
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b.bucketCache.Remove(b.Name())
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if err := b.bucketCache.Delete(b.Name()); err != nil && !errors.Is(err, lfu.ErrNotFound) {
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logger.Error(
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ctx, "could not delete bucket from cache",
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logger.F("cacheKey", b.Name()),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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}
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return nil, errors.WithStack(err)
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}
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b.blobInfoCache.Add(key, info)
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if err := b.blobInfoCache.Set(key, info); err != nil {
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logger.Error(
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ctx, "could not set blob info in cache",
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logger.F("cacheKey", key),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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return info, nil
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}
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@ -68,7 +88,13 @@ func (b *BlobBucket) List(ctx context.Context) ([]storage.BlobInfo, error) {
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infos, err := b.bucket.List(ctx)
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if err != nil {
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if errors.Is(err, storage.ErrBucketClosed) {
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b.bucketCache.Remove(b.Name())
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if err := b.bucketCache.Delete(b.Name()); err != nil && !errors.Is(err, lfu.ErrNotFound) {
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logger.Error(
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ctx, "could not delete bucket from cache",
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logger.F("cacheKey", b.Name()),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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}
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return nil, errors.WithStack(err)
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@ -76,7 +102,13 @@ func (b *BlobBucket) List(ctx context.Context) ([]storage.BlobInfo, error) {
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for _, ifo := range infos {
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key := b.getCacheKey(ifo.ID())
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b.blobInfoCache.Add(key, ifo)
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if err := b.blobInfoCache.Set(key, ifo); err != nil {
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logger.Error(
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ctx, "could not set blob info in cache",
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logger.F("cacheKey", key),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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}
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return infos, nil
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@ -93,7 +125,6 @@ func (b *BlobBucket) NewReader(ctx context.Context, id storage.BlobID) (io.ReadS
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logger.Debug(
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ctx, "found blob content in cache",
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logger.F("cacheKey", b.getCacheKey(id)),
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logger.F("cacheStats", b.contentCache.Stats()),
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)
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return cached, nil
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}
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@ -102,7 +133,13 @@ func (b *BlobBucket) NewReader(ctx context.Context, id storage.BlobID) (io.ReadS
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if err != nil {
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if errors.Is(err, storage.ErrBucketClosed) {
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b.clearCache(ctx, id)
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b.bucketCache.Remove(b.Name())
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if err := b.bucketCache.Delete(b.Name()); err != nil && !errors.Is(err, lfu.ErrNotFound) {
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logger.Error(
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ctx, "could not delete bucket from cache",
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logger.F("cacheKey", b.Name()),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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}
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return nil, errors.WithStack(err)
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@ -110,7 +147,7 @@ func (b *BlobBucket) NewReader(ctx context.Context, id storage.BlobID) (io.ReadS
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return &readCacher{
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reader: reader,
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cache: b.contentCache,
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cache: b.blobCache,
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key: b.getCacheKey(id),
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}, nil
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}
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@ -121,13 +158,13 @@ func (b *BlobBucket) getCacheKey(id storage.BlobID) string {
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func (b *BlobBucket) inContentCache(id storage.BlobID) (io.ReadSeekCloser, bool) {
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key := b.getCacheKey(id)
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data, err := b.contentCache.Get(key)
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data, err := b.blobCache.Get(key)
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if err != nil {
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if errors.Is(err, bigcache.ErrEntryNotFound) {
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if errors.Is(err, lfu.ErrNotFound) {
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return nil, false
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}
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logger.Error(context.Background(), "could not retrieve cache value", logger.CapturedE(errors.WithStack(err)))
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logger.Error(context.Background(), "could not retrieve cached value", logger.CapturedE(errors.WithStack(err)))
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return nil, false
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}
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@ -140,11 +177,17 @@ func (b *BlobBucket) clearCache(ctx context.Context, id storage.BlobID) {
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logger.Debug(ctx, "clearing cache", logger.F("cacheKey", key))
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if err := b.contentCache.Delete(key); err != nil && !errors.Is(err, bigcache.ErrEntryNotFound) {
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logger.Error(ctx, "could not clear cache", logger.CapturedE(errors.WithStack(err)))
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if err := b.blobCache.Delete(key); err != nil && !errors.Is(err, lfu.ErrNotFound) {
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logger.Error(ctx, "could not clear cache", logger.F("cacheKey", key), logger.CapturedE(errors.WithStack(err)))
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}
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b.blobInfoCache.Remove(key)
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if err := b.blobInfoCache.Delete(key); err != nil {
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logger.Error(
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ctx, "could not delete blob info from cache",
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logger.F("cacheKey", key),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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}
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// NewWriter implements storage.BlobBucket.
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@ -154,7 +197,13 @@ func (b *BlobBucket) NewWriter(ctx context.Context, id storage.BlobID) (io.Write
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writer, err := b.bucket.NewWriter(ctx, id)
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if err != nil {
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if errors.Is(err, storage.ErrBucketClosed) {
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b.bucketCache.Remove(b.Name())
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if err := b.bucketCache.Delete(b.Name()); err != nil && !errors.Is(err, lfu.ErrNotFound) {
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logger.Error(
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ctx, "could not delete bucket from cache",
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logger.F("cacheKey", b.Name()),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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}
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return nil, errors.WithStack(err)
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@ -168,7 +217,13 @@ func (b *BlobBucket) Size(ctx context.Context) (int64, error) {
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size, err := b.bucket.Size(ctx)
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if err != nil {
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if errors.Is(err, storage.ErrBucketClosed) {
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b.bucketCache.Remove(b.Name())
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if err := b.bucketCache.Delete(b.Name()); err != nil && !errors.Is(err, lfu.ErrNotFound) {
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logger.Error(
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ctx, "could not delete bucket from cache",
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logger.F("cacheKey", b.Name()),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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}
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return 0, errors.WithStack(err)
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@ -4,17 +4,16 @@ import (
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"context"
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"forge.cadoles.com/arcad/edge/pkg/storage"
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"github.com/allegro/bigcache/v3"
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"github.com/hashicorp/golang-lru/v2/expirable"
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"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
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"github.com/pkg/errors"
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"gitlab.com/wpetit/goweb/logger"
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)
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type BlobStore struct {
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store storage.BlobStore
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contentCache *bigcache.BigCache
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bucketCache *expirable.LRU[string, storage.BlobBucket]
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blobInfoCache *expirable.LRU[string, storage.BlobInfo]
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blobCache *lfu.Cache[string, []byte]
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bucketCache *lfu.Cache[string, storage.BlobBucket]
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blobInfoCache *lfu.Cache[string, storage.BlobInfo]
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}
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// DeleteBucket implements storage.BlobStore.
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@ -23,7 +22,7 @@ func (s *BlobStore) DeleteBucket(ctx context.Context, name string) error {
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return errors.WithStack(err)
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}
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s.bucketCache.Remove(name)
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s.bucketCache.Delete(name)
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return nil
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}
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@ -40,28 +39,40 @@ func (s *BlobStore) ListBuckets(ctx context.Context) ([]string, error) {
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// OpenBucket implements storage.BlobStore.
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func (s *BlobStore) OpenBucket(ctx context.Context, name string) (storage.BlobBucket, error) {
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bucket, ok := s.bucketCache.Get(name)
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if ok {
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bucket, err := s.bucketCache.Get(name)
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if err == nil {
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logger.Debug(ctx, "found bucket in cache", logger.F("name", name))
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return &BlobBucket{
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bucket: bucket,
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contentCache: s.contentCache,
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blobCache: s.blobCache,
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blobInfoCache: s.blobInfoCache,
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bucketCache: s.bucketCache,
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}, nil
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}
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bucket, err := s.store.OpenBucket(ctx, name)
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if err != nil && !errors.Is(err, lfu.ErrNotFound) {
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logger.Error(ctx, "could not retrieve bucket from cache",
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logger.F("cacheKey", name),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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|
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bucket, err = s.store.OpenBucket(ctx, name)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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|
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s.bucketCache.Add(name, bucket)
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if err := s.bucketCache.Set(name, bucket); err != nil {
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logger.Error(ctx, "could not set bucket in cache",
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logger.F("cacheKey", name),
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logger.CapturedE(errors.WithStack(err)),
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)
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}
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|
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return &BlobBucket{
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bucket: bucket,
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contentCache: s.contentCache,
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blobCache: s.blobCache,
|
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blobInfoCache: s.blobInfoCache,
|
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bucketCache: s.bucketCache,
|
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}, nil
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|
|
@ -70,27 +81,34 @@ func (s *BlobStore) OpenBucket(ctx context.Context, name string) (storage.BlobBu
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func NewBlobStore(store storage.BlobStore, funcs ...OptionFunc) (*BlobStore, error) {
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options := NewOptions(funcs...)
|
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|
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contentCache, err := bigcache.New(context.Background(), options.BigCache)
|
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if err != nil {
|
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return nil, errors.WithStack(err)
|
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}
|
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blobCache := lfu.NewCache[string, []byte](
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options.BlobCacheStore,
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lfu.WithCapacity[string, []byte](options.BlobCacheSize),
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lfu.WithGetValueSize[string, []byte](func(value []byte) (int, error) {
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return len(value), nil
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}),
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||||
)
|
||||
|
||||
onBlobBucketEvict := func(key string, bucket storage.BlobBucket) {
|
||||
ctx := context.Background()
|
||||
logger.Debug(ctx, "evicting blob bucket from cache", logger.F("cacheKey", key))
|
||||
blobBucketCache := lfu.NewCache[string, storage.BlobBucket](
|
||||
options.BlobBucketCacheStore,
|
||||
lfu.WithCapacity[string, storage.BlobBucket](options.BlobBucketCacheSize),
|
||||
lfu.WithGetValueSize[string, storage.BlobBucket](func(value storage.BlobBucket) (int, error) {
|
||||
return 1, nil
|
||||
}),
|
||||
)
|
||||
|
||||
if err := bucket.Close(); err != nil {
|
||||
logger.Error(ctx, "could not close bucket", logger.E(errors.WithStack(err)))
|
||||
}
|
||||
}
|
||||
|
||||
bucketCache := expirable.NewLRU[string, storage.BlobBucket](options.BucketCacheSize, onBlobBucketEvict, options.CacheTTL)
|
||||
blobInfoCache := expirable.NewLRU[string, storage.BlobInfo](options.BlobInfoCacheSize, nil, options.CacheTTL)
|
||||
blobInfoCache := lfu.NewCache[string, storage.BlobInfo](
|
||||
options.BlobInfoCacheStore,
|
||||
lfu.WithCapacity[string, storage.BlobInfo](options.BlobInfoCacheSize),
|
||||
lfu.WithGetValueSize[string, storage.BlobInfo](func(value storage.BlobInfo) (int, error) {
|
||||
return 1, nil
|
||||
}),
|
||||
)
|
||||
|
||||
return &BlobStore{
|
||||
store: store,
|
||||
contentCache: contentCache,
|
||||
bucketCache: bucketCache,
|
||||
blobCache: blobCache,
|
||||
bucketCache: blobBucketCache,
|
||||
blobInfoCache: blobInfoCache,
|
||||
}, nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,17 +1,19 @@
|
|||
package cache
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"bytes"
|
||||
"io"
|
||||
"net/url"
|
||||
"strconv"
|
||||
"time"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver"
|
||||
"github.com/allegro/bigcache/v3"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu/fs"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu/memory"
|
||||
"github.com/inhies/go-bytesize"
|
||||
"github.com/pkg/errors"
|
||||
"gitlab.com/wpetit/goweb/logger"
|
||||
)
|
||||
|
||||
func init() {
|
||||
|
|
@ -41,13 +43,6 @@ func blobStoreFactory(dsn *url.URL) (storage.BlobStore, error) {
|
|||
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithCacheTTL(cacheTTL))
|
||||
|
||||
cacheConfig, err := parseBigCacheConfig(&query, cacheTTL)
|
||||
if err != nil {
|
||||
return nil, errors.Wrap(err, "could not parse big cache config")
|
||||
}
|
||||
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithBigCacheConfig(*cacheConfig))
|
||||
|
||||
blobBucketCacheSize, err := parseInt(&query, "blobBucketCacheSize")
|
||||
if err != nil {
|
||||
if !errors.Is(err, errNotFound) {
|
||||
|
|
@ -57,7 +52,15 @@ func blobStoreFactory(dsn *url.URL) (storage.BlobStore, error) {
|
|||
blobBucketCacheSize = 16
|
||||
}
|
||||
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithBucketCacheSize(int(blobBucketCacheSize)))
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithBlobBucketCacheSize(int(blobBucketCacheSize)))
|
||||
|
||||
blobBucketCacheStorePrefix := "blobBucketCacheStore"
|
||||
blobBucketCacheStore, err := parseCacheStore[string, storage.BlobBucket](&query, blobBucketCacheStorePrefix)
|
||||
if err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithBlobBucketCacheStore(blobBucketCacheStore))
|
||||
|
||||
bloInfoCacheSize, err := parseInt(&query, "bloInfoCacheSize")
|
||||
if err != nil {
|
||||
|
|
@ -70,6 +73,46 @@ func blobStoreFactory(dsn *url.URL) (storage.BlobStore, error) {
|
|||
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithBlobInfoCacheSize(int(bloInfoCacheSize)))
|
||||
|
||||
blobInfoCacheStorePrefix := "blobInfoCacheStore"
|
||||
blobInfoCacheStore, err := parseCacheStore[string, storage.BlobInfo](&query, blobInfoCacheStorePrefix)
|
||||
if err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithBlobInfoCacheStore(blobInfoCacheStore))
|
||||
|
||||
blobCacheSize, err := parseByteSize(&query, "blobCacheSize")
|
||||
if err != nil {
|
||||
if !errors.Is(err, errNotFound) {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
blobCacheSize = 256e+6
|
||||
}
|
||||
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithBlobCacheSize(int(blobCacheSize)))
|
||||
|
||||
blobCacheStorePrefix := "blobCacheStore"
|
||||
blobCacheStore, err := parseCacheStore[string, []byte](
|
||||
&query, blobCacheStorePrefix,
|
||||
fs.WithMarshalValue[string, []byte](func(value []byte) (io.Reader, error) {
|
||||
return bytes.NewBuffer(value), nil
|
||||
}),
|
||||
fs.WithUnmarshalValue[string, []byte](func(r io.Reader) ([]byte, error) {
|
||||
data, err := io.ReadAll(r)
|
||||
if err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
return data, nil
|
||||
}),
|
||||
)
|
||||
if err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
blobStoreOptionFuncs = append(blobStoreOptionFuncs, WithBlobCacheStore(blobCacheStore))
|
||||
|
||||
url := &url.URL{
|
||||
Scheme: rawDriver,
|
||||
Host: dsn.Host,
|
||||
|
|
@ -90,89 +133,34 @@ func blobStoreFactory(dsn *url.URL) (storage.BlobStore, error) {
|
|||
return store, nil
|
||||
}
|
||||
|
||||
type cacheLogger struct{}
|
||||
|
||||
func (l *cacheLogger) Printf(format string, v ...interface{}) {
|
||||
logger.Debug(context.Background(), fmt.Sprintf(format, v...))
|
||||
}
|
||||
|
||||
var _ bigcache.Logger = &cacheLogger{}
|
||||
|
||||
func parseBigCacheConfig(query *url.Values, cacheTTL time.Duration) (*bigcache.Config, error) {
|
||||
config := bigcache.DefaultConfig(cacheTTL)
|
||||
config.Logger = &cacheLogger{}
|
||||
|
||||
hardMaxCacheSize, err := parseInt(query, "bigCacheHardMaxCacheSize")
|
||||
if err != nil {
|
||||
if !errors.Is(err, errNotFound) {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
hardMaxCacheSize = int64(config.HardMaxCacheSize)
|
||||
}
|
||||
|
||||
config.HardMaxCacheSize = int(hardMaxCacheSize)
|
||||
|
||||
maxEntriesInWindow, err := parseInt(query, "bigCacheMaxEntriesInWindow")
|
||||
if err != nil {
|
||||
if !errors.Is(err, errNotFound) {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
maxEntriesInWindow = int64(config.MaxEntriesInWindow)
|
||||
}
|
||||
|
||||
config.MaxEntriesInWindow = int(maxEntriesInWindow)
|
||||
|
||||
shards, err := parseInt(query, "bigCacheShards")
|
||||
if err != nil {
|
||||
if !errors.Is(err, errNotFound) {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
shards = int64(config.Shards)
|
||||
}
|
||||
|
||||
config.Shards = int(shards)
|
||||
|
||||
maxEntrySize, err := parseInt(query, "bigCacheMaxEntrySize")
|
||||
if err != nil {
|
||||
if !errors.Is(err, errNotFound) {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
maxEntrySize = int64(config.MaxEntrySize)
|
||||
}
|
||||
|
||||
config.MaxEntrySize = int(maxEntrySize)
|
||||
|
||||
cleanWindow, err := parseDuration(query, "bigCacheCleanWindow")
|
||||
if err != nil {
|
||||
if !errors.Is(err, errNotFound) {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
cleanWindow = config.CleanWindow
|
||||
}
|
||||
|
||||
config.CleanWindow = cleanWindow
|
||||
|
||||
lifeWindow, err := parseDuration(query, "bigCacheLifeWindow")
|
||||
if err != nil {
|
||||
if !errors.Is(err, errNotFound) {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
lifeWindow = config.LifeWindow
|
||||
}
|
||||
|
||||
config.LifeWindow = lifeWindow
|
||||
|
||||
return &config, nil
|
||||
}
|
||||
|
||||
var errNotFound = errors.New("not found")
|
||||
|
||||
func parseString(query *url.Values, name string) (string, error) {
|
||||
value := query.Get(name)
|
||||
if value != "" {
|
||||
query.Del(name)
|
||||
return value, nil
|
||||
}
|
||||
|
||||
return "", errors.WithStack(errNotFound)
|
||||
}
|
||||
|
||||
func parseByteSize(query *url.Values, name string) (bytesize.ByteSize, error) {
|
||||
rawValue := query.Get(name)
|
||||
if rawValue != "" {
|
||||
query.Del(name)
|
||||
|
||||
value, err := bytesize.Parse(rawValue)
|
||||
if err != nil {
|
||||
return 0, errors.Wrapf(err, "could not parse url parameter '%s'", name)
|
||||
}
|
||||
|
||||
return value, nil
|
||||
}
|
||||
|
||||
return 0, errors.WithStack(errNotFound)
|
||||
}
|
||||
|
||||
func parseInt(query *url.Values, name string) (int64, error) {
|
||||
rawValue := query.Get(name)
|
||||
if rawValue != "" {
|
||||
|
|
@ -204,3 +192,73 @@ func parseDuration(query *url.Values, name string) (time.Duration, error) {
|
|||
|
||||
return 0, errors.WithStack(errNotFound)
|
||||
}
|
||||
|
||||
const (
|
||||
storeTypeFS string = "fs"
|
||||
storeTypeMemory string = "memory"
|
||||
)
|
||||
|
||||
func parseCacheStore[K comparable, V any](query *url.Values, prefix string, optionFuncs ...any) (lfu.Store[K, V], error) {
|
||||
storeTypeParam := prefix + "Type"
|
||||
storeType, err := parseString(query, storeTypeParam)
|
||||
if err != nil {
|
||||
if errors.Is(err, errNotFound) {
|
||||
storeType = storeTypeMemory
|
||||
}
|
||||
}
|
||||
|
||||
switch storeType {
|
||||
case storeTypeFS:
|
||||
store, err := parseFSCacheStore[K, V](query, prefix, optionFuncs...)
|
||||
if err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
return store, nil
|
||||
|
||||
case storeTypeMemory:
|
||||
store, err := parseMemoryCacheStore[K, V](query, prefix, optionFuncs...)
|
||||
if err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
return store, nil
|
||||
}
|
||||
|
||||
return nil, errors.Errorf("unexpected store type value '%s' for parameter '%s'", storeType, storeTypeParam)
|
||||
}
|
||||
|
||||
func parseFSCacheStore[K comparable, V any](query *url.Values, prefix string, optionFuncs ...any) (*fs.Store[K, V], error) {
|
||||
baseDirParam := prefix + "BaseDir"
|
||||
baseDir, err := parseString(query, baseDirParam)
|
||||
if err != nil {
|
||||
if errors.Is(err, errNotFound) {
|
||||
return nil, errors.Wrapf(err, "missing required url parameter '%s'", baseDirParam)
|
||||
}
|
||||
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
funcs := make([]fs.OptionsFunc[K, V], 0)
|
||||
|
||||
for _, anyFn := range optionFuncs {
|
||||
fn, ok := anyFn.(fs.OptionsFunc[K, V])
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
|
||||
funcs = append(funcs, fn)
|
||||
}
|
||||
|
||||
store := fs.NewStore[K, V](baseDir, funcs...)
|
||||
|
||||
if err := store.Clear(); err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
return store, nil
|
||||
}
|
||||
|
||||
func parseMemoryCacheStore[K comparable, V any](query *url.Values, prefix string, optionFuncs ...any) (*memory.Store[K, V], error) {
|
||||
return memory.NewStore[K, V](), nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,313 @@
|
|||
package lfu
|
||||
|
||||
import (
|
||||
"slices"
|
||||
"sync/atomic"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
var (
|
||||
ErrNotFound = errors.New("not found")
|
||||
ErrSizeExceedCapacity = errors.New("size exceed capacity")
|
||||
)
|
||||
|
||||
type Cache[K comparable, V any] struct {
|
||||
index *Map[K, *cacheItem[K, V]]
|
||||
freqs *List[*frequencyItem[K, V]]
|
||||
|
||||
size atomic.Int32
|
||||
|
||||
capacity int
|
||||
store Store[K, V]
|
||||
getValueSize GetValueSizeFunc[V]
|
||||
sync *Synchronizer[K]
|
||||
|
||||
log LogFunc
|
||||
}
|
||||
|
||||
type cacheItem[K any, V any] struct {
|
||||
key K
|
||||
size int
|
||||
frequencyParent *Element[*frequencyItem[K, V]]
|
||||
}
|
||||
|
||||
func newCacheItem[K any, V any](key K, size int) *cacheItem[K, V] {
|
||||
item := &cacheItem[K, V]{
|
||||
key: key,
|
||||
size: size,
|
||||
}
|
||||
return item
|
||||
}
|
||||
|
||||
type frequencyItem[K any, V any] struct {
|
||||
entries *Map[*cacheItem[K, V], struct{}]
|
||||
freq int
|
||||
}
|
||||
|
||||
func newFrequencyItem[K any, V any]() *frequencyItem[K, V] {
|
||||
frequencyItem := &frequencyItem[K, V]{}
|
||||
frequencyItem.entries = NewMap[*cacheItem[K, V], struct{}]()
|
||||
return frequencyItem
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) Set(key K, value V) error {
|
||||
newItemSize, err := c.getValueSize(value)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
c.log("setting '%v' (size: %d)", key, newItemSize)
|
||||
|
||||
if newItemSize > int(c.capacity) {
|
||||
return errors.Wrapf(ErrSizeExceedCapacity, "item size '%d' exceed cache total capacity of '%v'", newItemSize, c.capacity)
|
||||
}
|
||||
|
||||
var sizeDelta int
|
||||
|
||||
err = c.sync.WriteTx(key, func() error {
|
||||
if err := c.store.Set(key, value); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
item, ok := c.index.Get(key)
|
||||
if ok {
|
||||
oldItemSize := item.size
|
||||
sizeDelta = -int(oldItemSize) + newItemSize
|
||||
|
||||
} else {
|
||||
item = newCacheItem[K, V](key, newItemSize)
|
||||
c.index.Set(key, item)
|
||||
sizeDelta = newItemSize
|
||||
}
|
||||
|
||||
c.size.Add(int32(sizeDelta))
|
||||
c.increment(item)
|
||||
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
// Eviction, if needed
|
||||
if err := c.Evict(key); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) Get(key K) (V, error) {
|
||||
var value V
|
||||
err := c.sync.WriteTx(key, func() error {
|
||||
c.log("getting '%v'", key)
|
||||
|
||||
e, ok := c.index.Get(key)
|
||||
if !ok {
|
||||
return errors.WithStack(ErrNotFound)
|
||||
}
|
||||
|
||||
v, err := c.store.Get(key)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
c.increment(e)
|
||||
|
||||
value = v
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return *new(V), errors.WithStack(err)
|
||||
}
|
||||
|
||||
return value, nil
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) Delete(key K) error {
|
||||
err := c.sync.WriteTx(key, func() error {
|
||||
c.log("deleting '%v'", key)
|
||||
|
||||
item, exists := c.index.Get(key)
|
||||
if !exists {
|
||||
return errors.WithStack(ErrNotFound)
|
||||
}
|
||||
|
||||
if err := c.store.Delete(key); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
c.size.Add(-int32(item.size))
|
||||
|
||||
c.remove(item.frequencyParent, item)
|
||||
c.index.Delete(key)
|
||||
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) Evict(skipped ...K) error {
|
||||
exceed, delta := c.atCapacity()
|
||||
if exceed && delta > 0 {
|
||||
if err := c.evict(delta, skipped...); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) Len() int {
|
||||
return c.index.Len()
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) Size() int {
|
||||
return int(c.size.Load())
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) Capacity() int {
|
||||
return c.capacity
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) increment(item *cacheItem[K, V]) {
|
||||
currentFrequencyElement := item.frequencyParent
|
||||
var nextFrequencyAmount int
|
||||
var nextFrequencyElement *Element[*frequencyItem[K, V]]
|
||||
|
||||
if currentFrequencyElement == nil {
|
||||
nextFrequencyAmount = 1
|
||||
nextFrequencyElement = c.freqs.First()
|
||||
} else {
|
||||
atomicFrequencyItem := c.freqs.Value(currentFrequencyElement)
|
||||
nextFrequencyAmount = atomicFrequencyItem.freq + 1
|
||||
nextFrequencyElement = c.freqs.Next(currentFrequencyElement)
|
||||
}
|
||||
|
||||
var nextFrequency *frequencyItem[K, V]
|
||||
if nextFrequencyElement != nil {
|
||||
nextFrequency = c.freqs.Value(nextFrequencyElement)
|
||||
}
|
||||
|
||||
if nextFrequencyElement == nil || nextFrequency == nil || nextFrequency.freq != nextFrequencyAmount {
|
||||
newFrequencyItem := newFrequencyItem[K, V]()
|
||||
newFrequencyItem.freq = nextFrequencyAmount
|
||||
|
||||
if currentFrequencyElement == nil {
|
||||
nextFrequencyElement = c.freqs.PushFront(newFrequencyItem)
|
||||
} else {
|
||||
nextFrequencyElement = c.freqs.InsertValueAfter(newFrequencyItem, currentFrequencyElement)
|
||||
}
|
||||
}
|
||||
|
||||
item.frequencyParent = nextFrequencyElement
|
||||
|
||||
nextFrequency = c.freqs.Value(nextFrequencyElement)
|
||||
nextFrequency.entries.Set(item, struct{}{})
|
||||
|
||||
if currentFrequencyElement != nil {
|
||||
c.remove(currentFrequencyElement, item)
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) remove(listItem *Element[*frequencyItem[K, V]], item *cacheItem[K, V]) {
|
||||
entries := c.freqs.Value(listItem).entries
|
||||
|
||||
entries.Delete(item)
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) atCapacity() (bool, int) {
|
||||
size, capacity := c.Size(), c.Capacity()
|
||||
c.log("cache stats: %d/%d", size, capacity)
|
||||
return size >= capacity, size - capacity
|
||||
}
|
||||
|
||||
func (c *Cache[K, V]) evict(total int, skipped ...K) error {
|
||||
if total == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
frequencyElement := c.freqs.First()
|
||||
if frequencyElement == nil {
|
||||
c.log("no frequency element")
|
||||
return nil
|
||||
}
|
||||
|
||||
for evicted := 0; evicted < total; {
|
||||
c.log("running eviction: [to_evict:%d, evicted: %d]", total, evicted)
|
||||
|
||||
c.log("first frequency element %p", frequencyElement)
|
||||
|
||||
frequencyItem := c.freqs.Value(frequencyElement)
|
||||
if frequencyItem == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
entries := frequencyItem.entries
|
||||
|
||||
if entries.Len() == 0 {
|
||||
c.log("no frequency entries")
|
||||
frequencyElement = c.freqs.Next(frequencyElement)
|
||||
continue
|
||||
}
|
||||
|
||||
var rangeErr error
|
||||
entries.Range(func(key, v any) bool {
|
||||
if evicted >= total {
|
||||
c.log("evicted enough (%d >= %d), stopping", evicted, total)
|
||||
return false
|
||||
}
|
||||
|
||||
entry, _ := key.(*cacheItem[K, V])
|
||||
|
||||
if slices.Contains(skipped, entry.key) {
|
||||
c.log("skipping key '%v'", entry.key)
|
||||
return true
|
||||
}
|
||||
|
||||
if err := c.Delete(entry.key); err != nil {
|
||||
if errors.Is(err, ErrNotFound) {
|
||||
c.log("key '%s' not found", entry.key)
|
||||
// Cleanup obsolete frequency
|
||||
c.remove(frequencyElement, entry)
|
||||
return true
|
||||
}
|
||||
|
||||
rangeErr = errors.WithStack(err)
|
||||
return false
|
||||
}
|
||||
|
||||
c.log("evicted key '%v' (size: %d)", entry.key, entry.size)
|
||||
|
||||
evicted += int(entry.size)
|
||||
|
||||
return true
|
||||
})
|
||||
if rangeErr != nil {
|
||||
return errors.WithStack(rangeErr)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func NewCache[K comparable, V any](store Store[K, V], funcs ...OptionsFunc[K, V]) *Cache[K, V] {
|
||||
opts := DefaultOptions[K, V](funcs...)
|
||||
|
||||
cache := &Cache[K, V]{
|
||||
index: NewMap[K, *cacheItem[K, V]](),
|
||||
freqs: NewList[*frequencyItem[K, V]](),
|
||||
capacity: opts.Capacity,
|
||||
store: store,
|
||||
getValueSize: opts.GetValueSize,
|
||||
sync: NewSynchronizer[K](),
|
||||
log: opts.Log,
|
||||
}
|
||||
|
||||
return cache
|
||||
}
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
package fs
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"io"
|
||||
"path/filepath"
|
||||
"testing"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu/testsuite"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
func TestCacheWithFSStore(t *testing.T) {
|
||||
testsuite.TestCacheWithStore(t, func(testName string) lfu.Store[string, string] {
|
||||
dir := filepath.Join("testdata", "testsuite", testName)
|
||||
store := NewStore[string, string](dir,
|
||||
WithMarshalValue[string, string](func(value string) (io.Reader, error) {
|
||||
return bytes.NewBuffer([]byte(value)), nil
|
||||
}),
|
||||
WithUnmarshalValue[string, string](func(r io.Reader) (string, error) {
|
||||
data, err := io.ReadAll(r)
|
||||
if err != nil {
|
||||
return "", errors.WithStack(err)
|
||||
}
|
||||
|
||||
return string(data), nil
|
||||
}),
|
||||
)
|
||||
|
||||
if err := store.Clear(); err != nil {
|
||||
panic(errors.WithStack(err))
|
||||
}
|
||||
|
||||
return store
|
||||
})
|
||||
}
|
||||
|
|
@ -0,0 +1,32 @@
|
|||
package fs
|
||||
|
||||
import (
|
||||
"strconv"
|
||||
|
||||
"github.com/mitchellh/hashstructure/v2"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
const (
|
||||
segmentSize = 2
|
||||
)
|
||||
|
||||
func DefaultGetKeyHash[K comparable](key K) ([]string, error) {
|
||||
uintHash, err := hashstructure.Hash(key, hashstructure.FormatV2, nil)
|
||||
if err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
hash := strconv.FormatUint(uintHash, 16)
|
||||
|
||||
totalSegments := len(hash) / segmentSize
|
||||
segments := make([]string, totalSegments)
|
||||
for i := 0; i < totalSegments; i++ {
|
||||
offset := i * segmentSize
|
||||
segments[i] = hash[offset : offset+segmentSize]
|
||||
}
|
||||
|
||||
segments = append(segments, hash)
|
||||
|
||||
return segments, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
package fs
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/gob"
|
||||
"io"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
func DefaultMarshalValue[V any](value V) (io.Reader, error) {
|
||||
var buf bytes.Buffer
|
||||
encoder := gob.NewEncoder(&buf)
|
||||
|
||||
if err := encoder.Encode(value); err != nil {
|
||||
return nil, errors.WithStack(err)
|
||||
}
|
||||
|
||||
return &buf, nil
|
||||
}
|
||||
|
||||
func DefaultUnmarshalValue[V any](d io.Reader) (V, error) {
|
||||
var value V
|
||||
encoder := gob.NewDecoder(d)
|
||||
|
||||
if err := encoder.Decode(&value); err != nil {
|
||||
return *new(V), errors.WithStack(err)
|
||||
}
|
||||
|
||||
return value, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
package fs
|
||||
|
||||
import "io"
|
||||
|
||||
type GetKeyHashFunc[K comparable] func(key K) ([]string, error)
|
||||
type MarshalValueFunc[V any] func(value V) (io.Reader, error)
|
||||
type UnmarshalValueFunc[V any] func(r io.Reader) (V, error)
|
||||
|
||||
type Options[K comparable, V any] struct {
|
||||
GetKeyHash GetKeyHashFunc[K]
|
||||
MarshalValue MarshalValueFunc[V]
|
||||
UnmarshalValue UnmarshalValueFunc[V]
|
||||
}
|
||||
|
||||
type OptionsFunc[K comparable, V any] func(opts *Options[K, V])
|
||||
|
||||
func DefaultOptions[K comparable, V any](funcs ...OptionsFunc[K, V]) *Options[K, V] {
|
||||
opts := &Options[K, V]{
|
||||
GetKeyHash: DefaultGetKeyHash[K],
|
||||
MarshalValue: DefaultMarshalValue[V],
|
||||
UnmarshalValue: DefaultUnmarshalValue[V],
|
||||
}
|
||||
for _, fn := range funcs {
|
||||
fn(opts)
|
||||
}
|
||||
return opts
|
||||
}
|
||||
|
||||
func WithGetKeyHash[K comparable, V any](getKeyHash GetKeyHashFunc[K]) OptionsFunc[K, V] {
|
||||
return func(opts *Options[K, V]) {
|
||||
opts.GetKeyHash = getKeyHash
|
||||
}
|
||||
}
|
||||
|
||||
func WithMarshalValue[K comparable, V any](marshalValue MarshalValueFunc[V]) OptionsFunc[K, V] {
|
||||
return func(opts *Options[K, V]) {
|
||||
opts.MarshalValue = marshalValue
|
||||
}
|
||||
}
|
||||
|
||||
func WithUnmarshalValue[K comparable, V any](unmarshalValue UnmarshalValueFunc[V]) OptionsFunc[K, V] {
|
||||
return func(opts *Options[K, V]) {
|
||||
opts.UnmarshalValue = unmarshalValue
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,165 @@
|
|||
package fs
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
type Store[K comparable, V any] struct {
|
||||
baseDir string
|
||||
getKeyHash GetKeyHashFunc[K]
|
||||
marshalValue MarshalValueFunc[V]
|
||||
unmarshalValue UnmarshalValueFunc[V]
|
||||
}
|
||||
|
||||
// Delete implements Store.
|
||||
func (s *Store[K, V]) Delete(key K) error {
|
||||
path, err := s.getEntryPath(key)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if err := os.Remove(path); err != nil && !errors.Is(err, os.ErrNotExist) {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Get implements Store.
|
||||
func (s *Store[K, V]) Get(key K) (V, error) {
|
||||
path, err := s.getEntryPath(key)
|
||||
if err != nil {
|
||||
return *new(V), errors.WithStack(err)
|
||||
}
|
||||
|
||||
value, err := s.readValue(path)
|
||||
if err != nil {
|
||||
if errors.Is(err, os.ErrNotExist) {
|
||||
return *new(V), errors.WithStack(lfu.ErrNotFound)
|
||||
}
|
||||
|
||||
return *new(V), errors.WithStack(err)
|
||||
}
|
||||
|
||||
return value, nil
|
||||
}
|
||||
|
||||
// Set implements Store.
|
||||
func (s *Store[K, V]) Set(key K, value V) error {
|
||||
path, err := s.getEntryPath(key)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if err := s.writeValue(path, value); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Store[K, V]) Clear() error {
|
||||
if err := os.RemoveAll(s.baseDir); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Store[K, V]) getEntryPath(k K) (string, error) {
|
||||
hash, err := s.getKeyHash(k)
|
||||
if err != nil {
|
||||
return "", errors.WithStack(err)
|
||||
}
|
||||
|
||||
path := append([]string{s.baseDir}, hash...)
|
||||
return filepath.Join(path...), nil
|
||||
}
|
||||
|
||||
func (s *Store[K, V]) writeValue(path string, value V) error {
|
||||
fi, err := os.Stat(path)
|
||||
if err == nil && !fi.Mode().IsRegular() {
|
||||
return fmt.Errorf("%s already exists and is not a regular file", path)
|
||||
}
|
||||
|
||||
dir := filepath.Dir(path)
|
||||
|
||||
if err := os.MkdirAll(dir, 0750); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
f, err := os.CreateTemp(dir, filepath.Base(path)+".tmp")
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
tmpName := f.Name()
|
||||
defer func() {
|
||||
if err != nil {
|
||||
f.Close()
|
||||
os.Remove(tmpName)
|
||||
}
|
||||
}()
|
||||
|
||||
reader, err := s.marshalValue(value)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if _, err := io.Copy(f, reader); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if err := f.Sync(); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if err := f.Close(); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if err := os.Rename(tmpName, path); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Store[K, V]) readValue(path string) (V, error) {
|
||||
file, err := os.Open(path)
|
||||
if err != nil {
|
||||
return *new(V), errors.WithStack(err)
|
||||
}
|
||||
|
||||
defer func() {
|
||||
if err := file.Close(); err != nil && !errors.Is(err, os.ErrClosed) {
|
||||
panic(errors.WithStack(err))
|
||||
}
|
||||
}()
|
||||
|
||||
value, err := s.unmarshalValue(file)
|
||||
|
||||
if err != nil {
|
||||
return *new(V), errors.WithStack(err)
|
||||
}
|
||||
|
||||
return value, nil
|
||||
}
|
||||
|
||||
func NewStore[K comparable, V any](baseDir string, funcs ...OptionsFunc[K, V]) *Store[K, V] {
|
||||
opts := DefaultOptions[K, V](funcs...)
|
||||
return &Store[K, V]{
|
||||
baseDir: baseDir,
|
||||
getKeyHash: opts.GetKeyHash,
|
||||
unmarshalValue: opts.UnmarshalValue,
|
||||
marshalValue: opts.MarshalValue,
|
||||
}
|
||||
}
|
||||
|
||||
var _ lfu.Store[string, int] = &Store[string, int]{}
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
*
|
||||
!.gitignore
|
||||
|
|
@ -0,0 +1,203 @@
|
|||
package lfu
|
||||
|
||||
import (
|
||||
"sync/atomic"
|
||||
)
|
||||
|
||||
type List[T any] struct {
|
||||
root *Element[T]
|
||||
len atomic.Int32
|
||||
sync *Synchronizer[*Element[T]]
|
||||
}
|
||||
|
||||
func (l *List[T]) First() *Element[T] {
|
||||
if l.Len() == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
var next *Element[T]
|
||||
l.sync.ReadTx(l.root, func(upgrade func(func())) error {
|
||||
next = l.root.next
|
||||
return nil
|
||||
})
|
||||
|
||||
return next
|
||||
}
|
||||
|
||||
func (l *List[T]) Last() *Element[T] {
|
||||
if l.Len() == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
var prev *Element[T]
|
||||
l.sync.ReadTx(l.root, func(upgrade func(func())) error {
|
||||
prev = l.root.prev
|
||||
return nil
|
||||
})
|
||||
|
||||
return prev
|
||||
}
|
||||
|
||||
func (l *List[T]) Prev(e *Element[T]) *Element[T] {
|
||||
var prev *Element[T]
|
||||
l.sync.ReadTx(e, func(upgrade func(func())) error {
|
||||
prev = e.prev
|
||||
return nil
|
||||
})
|
||||
|
||||
return prev
|
||||
}
|
||||
|
||||
func (l *List[T]) Next(e *Element[T]) *Element[T] {
|
||||
var next *Element[T]
|
||||
l.sync.ReadTx(e, func(upgrade func(func())) error {
|
||||
next = e.next
|
||||
return nil
|
||||
})
|
||||
|
||||
return next
|
||||
}
|
||||
|
||||
func (l *List[T]) Value(e *Element[T]) T {
|
||||
var value T
|
||||
l.sync.ReadTx(e, func(upgrade func(func())) error {
|
||||
value = e.value
|
||||
return nil
|
||||
})
|
||||
|
||||
return value
|
||||
}
|
||||
|
||||
func (l *List[T]) PushFront(v T) *Element[T] {
|
||||
return l.InsertValueAfter(v, l.root)
|
||||
}
|
||||
|
||||
func (l *List[T]) PushBack(v T) *Element[T] {
|
||||
return l.InsertValueAfter(v, l.root)
|
||||
}
|
||||
|
||||
func (l *List[T]) Remove(e *Element[T]) {
|
||||
l.remove(e)
|
||||
}
|
||||
|
||||
func (l *List[T]) Len() int {
|
||||
return int(l.len.Load())
|
||||
}
|
||||
|
||||
func (l *List[T]) insertAfter(e *Element[T], at *Element[T]) *Element[T] {
|
||||
l.sync.ReadTx(e, func(upgrade func(fn func())) error {
|
||||
var next *Element[T]
|
||||
l.sync.ReadTx(at, func(upgrade func(func())) error {
|
||||
next = at.next
|
||||
return nil
|
||||
})
|
||||
|
||||
upgrade(func() {
|
||||
e.prev = at
|
||||
e.next = next
|
||||
e.list = l
|
||||
})
|
||||
|
||||
if e.prev != nil {
|
||||
l.sync.WriteTx(e.prev, func() error {
|
||||
e.prev.next = e
|
||||
return nil
|
||||
})
|
||||
}
|
||||
|
||||
if e.next != nil {
|
||||
l.sync.WriteTx(e.next, func() error {
|
||||
e.next.prev = e
|
||||
return nil
|
||||
})
|
||||
}
|
||||
|
||||
return nil
|
||||
})
|
||||
|
||||
l.len.Add(1)
|
||||
|
||||
return e
|
||||
}
|
||||
|
||||
func (l *List[T]) InsertValueAfter(v T, at *Element[T]) *Element[T] {
|
||||
e := NewElement[T](v)
|
||||
return l.insertAfter(e, at)
|
||||
}
|
||||
|
||||
func (l *List[T]) remove(e *Element[T]) {
|
||||
if e == nil && e == l.root {
|
||||
return
|
||||
}
|
||||
|
||||
l.sync.ReadTx(e, func(upgrade func(fn func())) error {
|
||||
if e.prev != nil {
|
||||
if e.prev == e {
|
||||
upgrade(func() {
|
||||
e.prev.next = e.next
|
||||
})
|
||||
} else {
|
||||
l.sync.WriteTx(e.prev, func() error {
|
||||
e.prev.next = e.next
|
||||
return nil
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
if e.next != nil {
|
||||
if e.next == e {
|
||||
upgrade(func() {
|
||||
e.next.prev = e.prev
|
||||
})
|
||||
} else {
|
||||
l.sync.WriteTx(e.next, func() error {
|
||||
e.next.prev = e.prev
|
||||
return nil
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
upgrade(func() {
|
||||
e.next = nil
|
||||
e.prev = nil
|
||||
e.list = nil
|
||||
})
|
||||
|
||||
return nil
|
||||
})
|
||||
|
||||
l.sync.Remove(e)
|
||||
l.len.Add(-1)
|
||||
}
|
||||
|
||||
func NewList[T any]() *List[T] {
|
||||
root := NewElement(*new(T))
|
||||
root.next = root
|
||||
root.prev = root
|
||||
|
||||
list := &List[T]{
|
||||
sync: NewSynchronizer[*Element[T]](),
|
||||
}
|
||||
|
||||
root.list = list
|
||||
list.root = root
|
||||
|
||||
return list
|
||||
}
|
||||
|
||||
type Element[T any] struct {
|
||||
prev *Element[T]
|
||||
next *Element[T]
|
||||
list *List[T]
|
||||
value T
|
||||
}
|
||||
|
||||
func NewElement[T any](v T) *Element[T] {
|
||||
element := &Element[T]{
|
||||
prev: nil,
|
||||
next: nil,
|
||||
list: nil,
|
||||
value: v,
|
||||
}
|
||||
return element
|
||||
}
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
package lfu
|
||||
|
||||
import (
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
)
|
||||
|
||||
type Map[K comparable, V any] struct {
|
||||
size atomic.Int32
|
||||
inner sync.Map
|
||||
}
|
||||
|
||||
func (m *Map[K, V]) Get(key K) (V, bool) {
|
||||
raw, exists := m.inner.Load(key)
|
||||
if !exists {
|
||||
return *new(V), false
|
||||
}
|
||||
|
||||
value, ok := raw.(V)
|
||||
if !ok {
|
||||
return *new(V), false
|
||||
}
|
||||
|
||||
return value, true
|
||||
}
|
||||
|
||||
func (m *Map[K, V]) GetOrSet(key K, defaultValue V) (V, bool) {
|
||||
raw, loaded := m.inner.LoadOrStore(key, defaultValue)
|
||||
if !loaded {
|
||||
m.size.Add(1)
|
||||
}
|
||||
|
||||
value, ok := raw.(V)
|
||||
if !ok {
|
||||
return *new(V), loaded
|
||||
}
|
||||
|
||||
return value, loaded
|
||||
}
|
||||
|
||||
func (m *Map[K, V]) Set(key K, value V) {
|
||||
_, loaded := m.inner.Swap(key, value)
|
||||
if !loaded {
|
||||
m.size.Add(1)
|
||||
}
|
||||
}
|
||||
|
||||
func (m *Map[K, V]) Delete(key K) {
|
||||
_, existed := m.inner.LoadAndDelete(key)
|
||||
if existed {
|
||||
m.size.Add(-1)
|
||||
}
|
||||
}
|
||||
|
||||
func (m *Map[K, V]) Range(fn func(key, value any) bool) {
|
||||
m.inner.Range(fn)
|
||||
}
|
||||
|
||||
func (m *Map[K, V]) Len() int {
|
||||
return int(m.size.Load())
|
||||
}
|
||||
|
||||
func NewMap[K comparable, V any]() *Map[K, V] {
|
||||
return &Map[K, V]{
|
||||
inner: sync.Map{},
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,14 @@
|
|||
package memory
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu/testsuite"
|
||||
)
|
||||
|
||||
func TestCacheWithMemoryStore(t *testing.T) {
|
||||
testsuite.TestCacheWithStore(t, func(testName string) lfu.Store[string, string] {
|
||||
return NewStore[string, string]()
|
||||
})
|
||||
}
|
||||
|
|
@ -0,0 +1,40 @@
|
|||
package memory
|
||||
|
||||
import (
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
type Store[K comparable, V any] struct {
|
||||
index *lfu.Map[K, V]
|
||||
}
|
||||
|
||||
// Delete implements Store.
|
||||
func (s *Store[K, V]) Delete(key K) error {
|
||||
s.index.Delete(key)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Get implements Store.
|
||||
func (s *Store[K, V]) Get(key K) (V, error) {
|
||||
value, exists := s.index.Get(key)
|
||||
if !exists {
|
||||
return *new(V), errors.WithStack(lfu.ErrNotFound)
|
||||
}
|
||||
|
||||
return value, nil
|
||||
}
|
||||
|
||||
// Set implements Store.
|
||||
func (s *Store[K, V]) Set(key K, value V) error {
|
||||
s.index.Set(key, value)
|
||||
return nil
|
||||
}
|
||||
|
||||
func NewStore[K comparable, V any]() *Store[K, V] {
|
||||
return &Store[K, V]{
|
||||
index: lfu.NewMap[K, V](),
|
||||
}
|
||||
}
|
||||
|
||||
var _ lfu.Store[string, int] = &Store[string, int]{}
|
||||
|
|
@ -0,0 +1,47 @@
|
|||
package lfu
|
||||
|
||||
type GetValueSizeFunc[V any] func(value V) (int, error)
|
||||
|
||||
type LogFunc func(format string, values ...any)
|
||||
|
||||
func DefaultLogFunc(format string, values ...any) {
|
||||
|
||||
}
|
||||
|
||||
type Options[K comparable, V any] struct {
|
||||
GetValueSize GetValueSizeFunc[V]
|
||||
Capacity int
|
||||
Log LogFunc
|
||||
}
|
||||
|
||||
type OptionsFunc[K comparable, V any] func(opts *Options[K, V])
|
||||
|
||||
func DefaultOptions[K comparable, V any](funcs ...OptionsFunc[K, V]) *Options[K, V] {
|
||||
opts := &Options[K, V]{
|
||||
GetValueSize: DefaultGetValueSize[V],
|
||||
Capacity: 100,
|
||||
Log: DefaultLogFunc,
|
||||
}
|
||||
for _, fn := range funcs {
|
||||
fn(opts)
|
||||
}
|
||||
return opts
|
||||
}
|
||||
|
||||
func WithCapacity[K comparable, V any](capacity int) OptionsFunc[K, V] {
|
||||
return func(opts *Options[K, V]) {
|
||||
opts.Capacity = capacity
|
||||
}
|
||||
}
|
||||
|
||||
func WithGetValueSize[K comparable, V any](getValueSize GetValueSizeFunc[V]) OptionsFunc[K, V] {
|
||||
return func(opts *Options[K, V]) {
|
||||
opts.GetValueSize = getValueSize
|
||||
}
|
||||
}
|
||||
|
||||
func WithLog[K comparable, V any](fn LogFunc) OptionsFunc[K, V] {
|
||||
return func(opts *Options[K, V]) {
|
||||
opts.Log = fn
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,41 @@
|
|||
package lfu
|
||||
|
||||
import (
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
type Measurable interface {
|
||||
Size() (int, error)
|
||||
}
|
||||
|
||||
func DefaultGetValueSize[V any](value V) (int, error) {
|
||||
switch v := any(value).(type) {
|
||||
case int:
|
||||
return v, nil
|
||||
case int8:
|
||||
return int(v), nil
|
||||
case int32:
|
||||
return int(v), nil
|
||||
case int64:
|
||||
return int(v), nil
|
||||
case float32:
|
||||
return int(v), nil
|
||||
case float64:
|
||||
return int(v), nil
|
||||
case []byte:
|
||||
return len(v), nil
|
||||
case string:
|
||||
return len(v), nil
|
||||
}
|
||||
|
||||
if measurable, ok := any(value).(Measurable); ok {
|
||||
size, err := measurable.Size()
|
||||
if err != nil {
|
||||
return 0, errors.WithStack(err)
|
||||
}
|
||||
|
||||
return size, nil
|
||||
}
|
||||
|
||||
return 0, errors.Errorf("could not retrieve size of type '%T'", value)
|
||||
}
|
||||
|
|
@ -0,0 +1,7 @@
|
|||
package lfu
|
||||
|
||||
type Store[K comparable, V any] interface {
|
||||
Delete(key K) error
|
||||
Set(key K, value V) error
|
||||
Get(key K) (V, error)
|
||||
}
|
||||
|
|
@ -0,0 +1,56 @@
|
|||
package lfu
|
||||
|
||||
import (
|
||||
"sync"
|
||||
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
type Synchronizer[K comparable] struct {
|
||||
index *Map[K, *sync.RWMutex]
|
||||
}
|
||||
|
||||
func (s *Synchronizer[K]) Remove(key K) {
|
||||
s.index.Delete(key)
|
||||
}
|
||||
|
||||
func (s *Synchronizer[K]) ReadTx(key K, fn func(upgrade func(fn func())) error) error {
|
||||
mutex, _ := s.index.GetOrSet(key, &sync.RWMutex{})
|
||||
mutex.RLock()
|
||||
defer mutex.RUnlock()
|
||||
|
||||
upgrade := func(fn func()) {
|
||||
mutex.RUnlock()
|
||||
mutex.Lock()
|
||||
defer func() {
|
||||
mutex.Unlock()
|
||||
mutex.RLock()
|
||||
}()
|
||||
|
||||
fn()
|
||||
}
|
||||
|
||||
if err := fn(upgrade); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (s *Synchronizer[K]) WriteTx(key K, fn func() error) error {
|
||||
mutex, _ := s.index.GetOrSet(key, &sync.RWMutex{})
|
||||
mutex.Lock()
|
||||
defer mutex.Unlock()
|
||||
|
||||
if err := fn(); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func NewSynchronizer[K comparable]() *Synchronizer[K] {
|
||||
return &Synchronizer[K]{
|
||||
index: NewMap[K, *sync.RWMutex](),
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,40 @@
|
|||
package testsuite
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"runtime"
|
||||
"strings"
|
||||
"testing"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
type StoreFactory func(testName string) lfu.Store[string, string]
|
||||
type testCase func(t *testing.T, store lfu.Store[string, string]) error
|
||||
|
||||
var testCases = []testCase{
|
||||
testSetGetDelete,
|
||||
testEviction,
|
||||
testConcurrent,
|
||||
testMultipleSet,
|
||||
}
|
||||
|
||||
func TestCacheWithStore(t *testing.T, factory StoreFactory) {
|
||||
for _, tc := range testCases {
|
||||
funcName := runtime.FuncForPC(reflect.ValueOf(tc).Pointer()).Name()
|
||||
funcNameParts := strings.Split(funcName, "/")
|
||||
testName := funcNameParts[len(funcNameParts)-1]
|
||||
func(tc testCase) {
|
||||
t.Run(testName, func(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
store := factory(testName)
|
||||
|
||||
if err := tc(t, store); err != nil {
|
||||
t.Fatalf("%+v", errors.WithStack(err))
|
||||
}
|
||||
})
|
||||
}(tc)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
package testsuite
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"sync"
|
||||
"testing"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
func testConcurrent(t *testing.T, store lfu.Store[string, string]) error {
|
||||
const value = "foobar"
|
||||
totalKeys := 25
|
||||
totalSize := len(value) * totalKeys
|
||||
capacity := totalSize / 2
|
||||
|
||||
cache := lfu.NewCache[string, string](store,
|
||||
lfu.WithCapacity[string, string](capacity),
|
||||
lfu.WithLog[string, string](t.Logf),
|
||||
)
|
||||
|
||||
var wg sync.WaitGroup
|
||||
|
||||
wg.Add(totalKeys)
|
||||
|
||||
loops := totalKeys * 10
|
||||
|
||||
for i := 0; i < totalKeys; i++ {
|
||||
key := fmt.Sprintf("key%d", i)
|
||||
func(key string) {
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
for i := 0; i < loops; i++ {
|
||||
if err := cache.Set(key, value); err != nil {
|
||||
t.Errorf("%+v", errors.WithStack(err))
|
||||
}
|
||||
}
|
||||
}()
|
||||
}(key)
|
||||
}
|
||||
|
||||
wg.Wait()
|
||||
|
||||
t.Logf("cache before final evict [capacity: %d, size: %d, len: %d]", cache.Capacity(), cache.Size(), cache.Len())
|
||||
|
||||
if err := cache.Evict(); err != nil {
|
||||
t.Errorf("%+v", errors.WithStack(err))
|
||||
}
|
||||
|
||||
t.Logf("cache after final evict [capacity: %d, size: %d, len: %d]", cache.Capacity(), cache.Size(), cache.Len())
|
||||
|
||||
expectedLength := capacity / len(value)
|
||||
if e, g := expectedLength, cache.Len(); e < g {
|
||||
t.Errorf("cache.Len(): expected <= %d, got %d", e, g)
|
||||
}
|
||||
|
||||
if cache.Size() > capacity {
|
||||
t.Errorf("cache.Size(): expected <= %d, got %d", capacity, cache.Size())
|
||||
}
|
||||
|
||||
if e, g := expectedLength*len(value), cache.Size(); e < g {
|
||||
t.Errorf("cache.Size(): expected <= %d, got %d", e, g)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
package testsuite
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
func testEviction(t *testing.T, store lfu.Store[string, string]) error {
|
||||
cache := lfu.NewCache[string, string](store,
|
||||
lfu.WithCapacity[string, string](10),
|
||||
lfu.WithLog[string, string](t.Logf),
|
||||
)
|
||||
|
||||
if err := cache.Set("key1", "key1"); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if err := cache.Set("key2", "key2"); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
// Increment frequency of key2
|
||||
if _, err := cache.Get("key2"); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := 8, cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if err := cache.Set("key3", "key3"); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
t.Logf("cache [capacity: %d, size: %d, len: %d]", cache.Capacity(), cache.Size(), cache.Len())
|
||||
|
||||
_, err := cache.Get("key1")
|
||||
if err == nil {
|
||||
t.Errorf("expected 'key1' to be evicted")
|
||||
}
|
||||
|
||||
if !errors.Is(err, lfu.ErrNotFound) {
|
||||
t.Errorf("expected err to be 'ErrNotFound'")
|
||||
}
|
||||
|
||||
value, err := cache.Get("key2")
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := "key2", value; e < g {
|
||||
t.Errorf("cache.Get(\"key2\"): expected %v, got %v", e, g)
|
||||
}
|
||||
|
||||
if e, g := cache.Capacity(), cache.Size(); e < g {
|
||||
t.Errorf("cache.Size(): expected <= %d, got %d", e, g)
|
||||
}
|
||||
|
||||
if e, g := 2, cache.Len(); e != g {
|
||||
t.Errorf("cache.Len(): expected %d, got %d", e, g)
|
||||
}
|
||||
|
||||
if cache.Size() < 0 {
|
||||
t.Errorf("cache.Size(): expected value >= 0, got %d", cache.Size())
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,80 @@
|
|||
package testsuite
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
func testMultipleSet(t *testing.T, store lfu.Store[string, string]) error {
|
||||
const (
|
||||
key = "mykey"
|
||||
firstValue = "foo"
|
||||
secondValue = "bar"
|
||||
thirdValue = "foobar"
|
||||
)
|
||||
|
||||
cache := lfu.NewCache[string, string](store)
|
||||
|
||||
if e, g := 0, cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if err := cache.Set(key, firstValue); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := len(firstValue), cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
retrieved, err := cache.Get(key)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := firstValue, retrieved; e != g {
|
||||
t.Errorf("cache.Get(key): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if err := cache.Set(key, secondValue); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := len(secondValue), cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
retrieved, err = cache.Get(key)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := secondValue, retrieved; e != g {
|
||||
t.Errorf("cache.Get(key): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if err := cache.Set(key, thirdValue); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := len(thirdValue), cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
retrieved, err = cache.Get(key)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := thirdValue, retrieved; e != g {
|
||||
t.Errorf("cache.Get(key): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if e, g := len(thirdValue), cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,66 @@
|
|||
package testsuite
|
||||
|
||||
import (
|
||||
"testing"
|
||||
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"github.com/pkg/errors"
|
||||
)
|
||||
|
||||
func testSetGetDelete(t *testing.T, store lfu.Store[string, string]) error {
|
||||
const (
|
||||
key = "mykey"
|
||||
value = "foobar"
|
||||
)
|
||||
|
||||
cache := lfu.NewCache[string, string](store, lfu.WithCapacity[string, string](10))
|
||||
|
||||
if e, g := 0, cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if err := cache.Set(key, value); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := len(value), cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if e, g := 1, cache.Len(); e != g {
|
||||
t.Errorf("cache.Len(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
retrieved, err := cache.Get(key)
|
||||
if err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if e, g := value, retrieved; e != g {
|
||||
t.Errorf("cache.Get(key): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if err := cache.Delete(key); err != nil {
|
||||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if _, err := cache.Get(key); err == nil || !errors.Is(err, lfu.ErrNotFound) {
|
||||
t.Errorf("cache.Get(key): err should be lfu.ErrNotFound, got '%v'", errors.WithStack(err))
|
||||
}
|
||||
|
||||
if e, g := value, retrieved; e != g {
|
||||
t.Errorf("cache.Get(key): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if e, g := 0, cache.Size(); e != g {
|
||||
t.Errorf("cache.Size(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
if e, g := 0, cache.Len(); e != g {
|
||||
t.Errorf("cache.Len(): expected '%v', got '%v'", e, g)
|
||||
}
|
||||
|
||||
t.Logf("cache [capacity: %d, size: %d, len: %d]", cache.Capacity(), cache.Size(), cache.Len())
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -3,14 +3,25 @@ package cache
|
|||
import (
|
||||
"time"
|
||||
|
||||
"github.com/allegro/bigcache/v3"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu/memory"
|
||||
)
|
||||
|
||||
type Options struct {
|
||||
CacheTTL time.Duration
|
||||
BigCache bigcache.Config
|
||||
BucketCacheSize int
|
||||
|
||||
BlobCacheStore lfu.Store[string, []byte]
|
||||
// Maximum total size of cached data
|
||||
BlobCacheSize int
|
||||
|
||||
BlobInfoCacheStore lfu.Store[string, storage.BlobInfo]
|
||||
// Maximum number of blob infos
|
||||
BlobInfoCacheSize int
|
||||
|
||||
BlobBucketCacheStore lfu.Store[string, storage.BlobBucket]
|
||||
// Maximum number of blob bucket
|
||||
BlobBucketCacheSize int
|
||||
}
|
||||
|
||||
type OptionFunc func(opts *Options)
|
||||
|
|
@ -19,9 +30,12 @@ func NewOptions(funcs ...OptionFunc) *Options {
|
|||
defaultTTL := 60 * time.Minute
|
||||
opts := &Options{
|
||||
CacheTTL: defaultTTL,
|
||||
BigCache: bigcache.DefaultConfig(defaultTTL),
|
||||
BucketCacheSize: 16,
|
||||
BlobCacheStore: memory.NewStore[string, []byte](),
|
||||
BlobCacheSize: 1e+9, // 1Gb
|
||||
BlobInfoCacheStore: memory.NewStore[string, storage.BlobInfo](),
|
||||
BlobInfoCacheSize: 256,
|
||||
BlobBucketCacheStore: memory.NewStore[string, storage.BlobBucket](),
|
||||
BlobBucketCacheSize: 16,
|
||||
}
|
||||
|
||||
for _, fn := range funcs {
|
||||
|
|
@ -37,15 +51,15 @@ func WithCacheTTL(ttl time.Duration) OptionFunc {
|
|||
}
|
||||
}
|
||||
|
||||
func WithBigCacheConfig(config bigcache.Config) OptionFunc {
|
||||
func WithBlobBucketCacheSize(size int) OptionFunc {
|
||||
return func(opts *Options) {
|
||||
opts.BigCache = config
|
||||
opts.BlobBucketCacheSize = size
|
||||
}
|
||||
}
|
||||
|
||||
func WithBucketCacheSize(size int) OptionFunc {
|
||||
func WithBlobBucketCacheStore(store lfu.Store[string, storage.BlobBucket]) OptionFunc {
|
||||
return func(opts *Options) {
|
||||
opts.BucketCacheSize = size
|
||||
opts.BlobBucketCacheStore = store
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -54,3 +68,21 @@ func WithBlobInfoCacheSize(size int) OptionFunc {
|
|||
opts.BlobInfoCacheSize = size
|
||||
}
|
||||
}
|
||||
|
||||
func WithBlobInfoCacheStore(store lfu.Store[string, storage.BlobInfo]) OptionFunc {
|
||||
return func(opts *Options) {
|
||||
opts.BlobInfoCacheStore = store
|
||||
}
|
||||
}
|
||||
|
||||
func WithBlobCacheSize(size int) OptionFunc {
|
||||
return func(opts *Options) {
|
||||
opts.BlobCacheSize = size
|
||||
}
|
||||
}
|
||||
|
||||
func WithBlobCacheStore(store lfu.Store[string, []byte]) OptionFunc {
|
||||
return func(opts *Options) {
|
||||
opts.BlobCacheStore = store
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,18 +1,21 @@
|
|||
package cache
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"fmt"
|
||||
"io"
|
||||
|
||||
"github.com/allegro/bigcache/v3"
|
||||
"cdr.dev/slog"
|
||||
"forge.cadoles.com/arcad/edge/pkg/storage/driver/cache/lfu"
|
||||
"github.com/pkg/errors"
|
||||
"gitlab.com/wpetit/goweb/logger"
|
||||
)
|
||||
|
||||
type readCacher struct {
|
||||
reader io.ReadSeekCloser
|
||||
cache *bigcache.BigCache
|
||||
cache *lfu.Cache[string, []byte]
|
||||
buf bytes.Buffer
|
||||
key string
|
||||
}
|
||||
|
||||
|
|
@ -22,6 +25,21 @@ func (r *readCacher) Close() error {
|
|||
return errors.WithStack(err)
|
||||
}
|
||||
|
||||
if err := r.cache.Set(r.key, r.buf.Bytes()); err != nil {
|
||||
var logErr slog.Field
|
||||
if errors.Is(err, lfu.ErrSizeExceedCapacity) {
|
||||
logErr = logger.E(errors.WithStack(err))
|
||||
} else {
|
||||
logErr = logger.CapturedE(errors.WithStack(err))
|
||||
}
|
||||
logger.Error(context.Background(), "could not cache buffered data",
|
||||
logger.F("cacheKey", r.key),
|
||||
logErr,
|
||||
)
|
||||
}
|
||||
|
||||
r.buf.Reset()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
|
|
@ -37,13 +55,9 @@ func (r *readCacher) Read(p []byte) (n int, err error) {
|
|||
}
|
||||
|
||||
if length > 0 {
|
||||
if err := r.cache.Append(r.key, p[:length]); err != nil {
|
||||
if _, err := r.buf.Write(p[:length]); err != nil {
|
||||
ctx := logger.With(context.Background(), logger.F("cacheKey", r.key))
|
||||
logger.Error(ctx, "could not write to buffer", logger.CapturedE(errors.WithStack(err)))
|
||||
|
||||
if err := r.cache.Delete(r.key); err != nil {
|
||||
logger.Error(ctx, "could not delete cache key", logger.CapturedE(errors.WithStack(err)))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue