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[#165] Add list session cache

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Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>
This commit is contained in:
Denis Kirillov 2023-10-16 09:27:21 +03:00
parent 29ac91dfd5
commit 6e8960b2ab
13 changed files with 196 additions and 55 deletions
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99
api/cache/listsession.go vendored Normal file
View file

@ -0,0 +1,99 @@
package cache
import (
"fmt"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/data"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
"github.com/bluele/gcache"
"go.uber.org/zap"
)
type (
// ListSessionCache contains cache for list session (during pagination).
ListSessionCache struct {
cache gcache.Cache
logger *zap.Logger
}
// ListSessionKey is a key to find a ListSessionCache's entry.
ListSessionKey struct {
cid cid.ID
prefix string
token string
}
)
const (
// DefaultListSessionCacheLifetime is a default lifetime of entries in cache of ListObjects.
DefaultListSessionCacheLifetime = time.Second * 60
// DefaultListSessionCacheSize is a default size of cache of ListObjects.
DefaultListSessionCacheSize = 100
)
// DefaultListSessionConfig returns new default cache expiration values.
func DefaultListSessionConfig(logger *zap.Logger) *Config {
return &Config{
Size: DefaultListSessionCacheSize,
Lifetime: DefaultListSessionCacheLifetime,
Logger: logger,
}
}
func (k *ListSessionKey) String() string {
return k.cid.EncodeToString() + k.prefix + k.token
}
// NewListSessionCache is a constructor which creates an object of ListObjectsCache with the given lifetime of entries.
func NewListSessionCache(config *Config) *ListSessionCache {
gc := gcache.New(config.Size).LRU().Expiration(config.Lifetime).EvictedFunc(func(key interface{}, val interface{}) {
session, ok := val.(*data.ListSession)
if !ok {
config.Logger.Warn(logs.InvalidCacheEntryType, zap.String("actual", fmt.Sprintf("%T", val)),
zap.String("expected", fmt.Sprintf("%T", session)))
}
session.Cancel()
}).Build()
return &ListSessionCache{cache: gc, logger: config.Logger}
}
// GetListSession returns a list of ObjectInfo.
func (l *ListSessionCache) GetListSession(key ListSessionKey) *data.ListSession {
entry, err := l.cache.Get(key)
if err != nil {
return nil
}
result, ok := entry.(*data.ListSession)
if !ok {
l.logger.Warn(logs.InvalidCacheEntryType, zap.String("actual", fmt.Sprintf("%T", entry)),
zap.String("expected", fmt.Sprintf("%T", result)))
return nil
}
return result
}
// PutListSession puts a list of object versions to cache.
func (l *ListSessionCache) PutListSession(key ListSessionKey, session *data.ListSession) error {
return l.cache.Set(key, session)
}
// DeleteListSession removes key from cache.
func (l *ListSessionCache) DeleteListSession(key ListSessionKey) {
l.cache.Remove(key)
}
// CreateListSessionCacheKey returns ListSessionKey with the given CID, prefix and token.
func CreateListSessionCacheKey(cnr cid.ID, prefix, token string) ListSessionKey {
p := ListSessionKey{
cid: cnr,
prefix: prefix,
token: token,
}
return p
}

18
api/data/listsession.go Normal file
View file

@ -0,0 +1,18 @@
package data
import (
"context"
)
type VersionsStream interface {
Next(ctx context.Context) (*NodeVersion, error)
}
// todo consider thread safe
type ListSession struct {
Next *ObjectInfo
Stream VersionsStream
NamesMap map[string]struct{}
Context context.Context
Cancel context.CancelFunc
}

38
api/layer/cache.go
View file

@ -1,8 +1,6 @@
package layer
import (
"context"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/cache"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/data"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs"
@ -12,17 +10,10 @@ import (
"go.uber.org/zap"
)
type TestCacheValue struct {
Next *data.ObjectInfo
Stream LatestVersionsByPrefixStream
NamesMap map[string]struct{}
Context context.Context
}
type Cache struct {
testCache map[string]TestCacheValue
logger *zap.Logger
listsCache *cache.ObjectsListCache
sessionListCache *cache.ListSessionCache
objCache *cache.ObjectsCache
namesCache *cache.ObjectsNameCache
bucketCache *cache.BucketCache
@ -35,6 +26,7 @@ type CachesConfig struct {
Logger *zap.Logger
Objects *cache.Config
ObjectsList *cache.Config
SessionList *cache.Config
Names *cache.Config
Buckets *cache.Config
System *cache.Config
@ -47,6 +39,7 @@ func DefaultCachesConfigs(logger *zap.Logger) *CachesConfig {
Logger: logger,
Objects: cache.DefaultObjectsConfig(logger),
ObjectsList: cache.DefaultObjectsListConfig(logger),
SessionList: cache.DefaultListSessionConfig(logger),
Names: cache.DefaultObjectsNameConfig(logger),
Buckets: cache.DefaultBucketConfig(logger),
System: cache.DefaultSystemConfig(logger),
@ -56,9 +49,9 @@ func DefaultCachesConfigs(logger *zap.Logger) *CachesConfig {
func NewCache(cfg *CachesConfig) *Cache {
return &Cache{
testCache: map[string]TestCacheValue{},
logger: cfg.Logger,
listsCache: cache.NewObjectsListCache(cfg.ObjectsList),
sessionListCache: cache.NewListSessionCache(cfg.ObjectsList),
objCache: cache.New(cfg.Objects),
namesCache: cache.NewObjectsNameCache(cfg.Names),
bucketCache: cache.NewBucketCache(cfg.Buckets),
@ -155,6 +148,29 @@ func (c *Cache) PutList(owner user.ID, key cache.ObjectsListKey, list []*data.No
}
}
func (c *Cache) GetListSession(owner user.ID, key cache.ListSessionKey) *data.ListSession {
if !c.accessCache.Get(owner, key.String()) {
return nil
}
return c.sessionListCache.GetListSession(key)
}
func (c *Cache) PutListSession(owner user.ID, key cache.ListSessionKey, session *data.ListSession) {
if err := c.sessionListCache.PutListSession(key, session); err != nil {
c.logger.Warn(logs.CouldntCacheListSession, zap.Error(err))
}
if err := c.accessCache.Put(owner, key.String()); err != nil {
c.logger.Warn(logs.CouldntCacheAccessControlOperation, zap.Error(err))
}
}
func (c *Cache) DeleteListSession(owner user.ID, key cache.ListSessionKey) {
c.sessionListCache.DeleteListSession(key)
c.accessCache.Delete(owner, key.String())
}
func (c *Cache) GetTagging(owner user.ID, key string) map[string]string {
if !c.accessCache.Get(owner, key) {
return nil

41
api/layer/object.go
View file

@ -17,7 +17,6 @@ import (
"strconv"
"strings"
"sync"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/auth"
@ -652,41 +651,39 @@ func (n *layer) getLatestObjectsVersionsV2(ctx context.Context, p allObjectParam
return nil, nil, nil
}
testKey := p.Prefix + p.Delimiter + p.ContinuationToken
nodeVersionsStreamValue, ok := n.cache.testCache[testKey]
if ok {
delete(n.cache.testCache, testKey)
owner := n.BearerOwner(ctx)
cacheKey := cache.CreateListSessionCacheKey(p.Bucket.CID, p.Prefix, p.Delimiter)
session := n.cache.GetListSession(owner, cacheKey)
if session != nil {
// after reading next object from stream in session
// the current cache value already doesn't match with next token in cache key
n.cache.DeleteListSession(owner, cacheKey)
} else {
ctx2, cancel2 := context.WithCancel(context.Background())
go func() {
<-time.After(10 * time.Second)
cancel2()
}()
session = &data.ListSession{NamesMap: make(map[string]struct{})}
session.Context, session.Cancel = context.WithCancel(context.Background())
if bd, err := middleware.GetBoxData(ctx); err == nil {
ctx2 = middleware.SetBoxData(ctx2, bd)
session.Context = middleware.SetBoxData(session.Context, bd)
}
nodeVersionsStreamValue.Stream, err = n.treeService.GetLatestVersionsByPrefixStream(ctx2, p.Bucket, p.Prefix)
session.Stream, err = n.treeService.GetLatestVersionsByPrefixStream(session.Context, p.Bucket, p.Prefix)
if err != nil {
return nil, nil, err
}
nodeVersionsStreamValue.NamesMap = map[string]struct{}{}
}
poolCtx, cancel := context.WithCancel(ctx)
defer cancel()
generator, errorCh := nodesGeneratorStream(poolCtx, p, nodeVersionsStreamValue)
generator, errorCh := nodesGeneratorStream(poolCtx, p, session)
objOutCh, err := n.initWorkerPoolStream(poolCtx, 2, p, generator)
if err != nil {
return nil, nil, fmt.Errorf("failed to init worker pool: %w", err)
}
objects = make([]*data.ObjectInfo, 0, p.MaxKeys+1)
if nodeVersionsStreamValue.Next != nil {
objects = append(objects, nodeVersionsStreamValue.Next)
if session.Next != nil {
objects = append(objects, session.Next)
}
for obj := range objOutCh {
@ -694,9 +691,7 @@ func (n *layer) getLatestObjectsVersionsV2(ctx context.Context, p allObjectParam
}
if err = <-errorCh; err != nil {
fmt.Println(len(objects))
fmt.Println(objects[len(objects)-1].Name)
return nil, nil, fmt.Errorf("failed to get object from tree: %w", err)
return nil, nil, fmt.Errorf("failed to get next object from stream: %w", err)
}
sort.Slice(objects, func(i, j int) bool {
@ -709,8 +704,8 @@ func (n *layer) getLatestObjectsVersionsV2(ctx context.Context, p allObjectParam
}
if next != nil {
nodeVersionsStreamValue.Next = next
n.cache.testCache[p.Prefix+p.Delimiter+next.VersionID()] = nodeVersionsStreamValue
session.Next = next
n.cache.PutListSession(owner, cache.CreateListSessionCacheKey(p.Bucket.CID, p.Prefix, next.VersionID()), session)
}
return
@ -772,7 +767,7 @@ func nodesGeneratorVersions(ctx context.Context, p allObjectParams, nodeVersions
return nodeCh
}
func nodesGeneratorStream(ctx context.Context, p allObjectParams, stream TestCacheValue) (<-chan *data.NodeVersion, <-chan error) {
func nodesGeneratorStream(ctx context.Context, p allObjectParams, stream *data.ListSession) (<-chan *data.NodeVersion, <-chan error) {
nodeCh := make(chan *data.NodeVersion)
errCh := make(chan error, 1)
//existed := make(map[string]struct{}, p.MaxKeys) // to squash the same directories

2
api/layer/tree_mock.go
View file

@ -212,7 +212,7 @@ func (t *TreeServiceMock) GetLatestVersionsByPrefix(_ context.Context, bktInfo *
return result, nil
}
func (t *TreeServiceMock) GetLatestVersionsByPrefixStream(ctx context.Context, bktInfo *data.BucketInfo, prefix string) (LatestVersionsByPrefixStream, error) {
func (t *TreeServiceMock) GetLatestVersionsByPrefixStream(ctx context.Context, bktInfo *data.BucketInfo, prefix string) (data.VersionsStream, error) {
cnrVersionsMap, ok := t.versions[bktInfo.CID.EncodeToString()]
if !ok {
return nil, ErrNodeNotFound

6
api/layer/tree_service.go
View file

@ -8,10 +8,6 @@ import (
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
)
type LatestVersionsByPrefixStream interface {
Next(ctx context.Context) (*data.NodeVersion, error)
}
// TreeService provide interface to interact with tree service using s3 data models.
type TreeService interface {
// PutSettingsNode update or create new settings node in tree service.
@ -59,7 +55,7 @@ type TreeService interface {
GetVersions(ctx context.Context, bktInfo *data.BucketInfo, objectName string) ([]*data.NodeVersion, error)
GetLatestVersion(ctx context.Context, bktInfo *data.BucketInfo, objectName string) (*data.NodeVersion, error)
GetLatestVersionsByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string) ([]*data.NodeVersion, error)
GetLatestVersionsByPrefixStream(ctx context.Context, bktInfo *data.BucketInfo, prefix string) (LatestVersionsByPrefixStream, error)
GetLatestVersionsByPrefixStream(ctx context.Context, bktInfo *data.BucketInfo, prefix string) (data.VersionsStream, error)
GetAllVersionsByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string) ([]*data.NodeVersion, error)
GetUnversioned(ctx context.Context, bktInfo *data.BucketInfo, objectName string) (*data.NodeVersion, error)
AddVersion(ctx context.Context, bktInfo *data.BucketInfo, newVersion *data.NodeVersion) (uint64, error)

3
cmd/s3-gw/app.go
View file

@ -906,6 +906,9 @@ func getCacheOptions(v *viper.Viper, l *zap.Logger) *layer.CachesConfig {
cacheCfg.ObjectsList.Lifetime = fetchCacheLifetime(v, l, cfgListObjectsCacheLifetime, cacheCfg.ObjectsList.Lifetime)
cacheCfg.ObjectsList.Size = fetchCacheSize(v, l, cfgListObjectsCacheSize, cacheCfg.ObjectsList.Size)
cacheCfg.SessionList.Lifetime = fetchCacheLifetime(v, l, cfgSessionListCacheLifetime, cacheCfg.SessionList.Lifetime)
cacheCfg.SessionList.Size = fetchCacheSize(v, l, cfgSessionListCacheSize, cacheCfg.SessionList.Size)
cacheCfg.Buckets.Lifetime = fetchCacheLifetime(v, l, cfgBucketsCacheLifetime, cacheCfg.Buckets.Lifetime)
cacheCfg.Buckets.Size = fetchCacheSize(v, l, cfgBucketsCacheSize, cacheCfg.Buckets.Size)

2
cmd/s3-gw/app_settings.go
View file

@ -98,6 +98,8 @@ const ( // Settings.
cfgObjectsCacheSize = "cache.objects.size"
cfgListObjectsCacheLifetime = "cache.list.lifetime"
cfgListObjectsCacheSize = "cache.list.size"
cfgSessionListCacheLifetime = "cache.list_session.lifetime"
cfgSessionListCacheSize = "cache.list_session.size"
cfgBucketsCacheLifetime = "cache.buckets.lifetime"
cfgBucketsCacheSize = "cache.buckets.size"
cfgNamesCacheLifetime = "cache.names.lifetime"

3
config/config.env
View file

@ -82,6 +82,9 @@ S3_GW_CACHE_OBJECTS_SIZE=1000000
# Cache which keeps lists of objects in buckets
S3_GW_CACHE_LIST_LIFETIME=1m
S3_GW_CACHE_LIST_SIZE=100000
# Cache which keeps listing session
S3_GW_CACHE_LIST_SESSION_LIFETIME=1m
S3_GW_CACHE_LIST_SESSION_SIZE=100
# Cache which contains mapping of bucket name to bucket info
S3_GW_CACHE_BUCKETS_LIFETIME=1m
S3_GW_CACHE_BUCKETS_SIZE=1000

4
config/config.yaml
View file

@ -100,6 +100,10 @@ cache:
list:
lifetime: 1m
size: 100
# Cache which keeps listing sessions
list_session:
lifetime: 1m
size: 100
# Cache which contains mapping of nice name to object addresses
names:
lifetime: 1m

4
docs/configuration.md
View file

@ -396,6 +396,9 @@ cache:
list:
lifetime: 1m
size: 100
list_session:
lifetime: 1m
size: 100
names:
lifetime: 1m
size: 1000
@ -420,6 +423,7 @@ cache:
|-----------------|-----------------------------------|-----------------------------------|----------------------------------------------------------------------------------------|
| `objects` | [Cache config](#cache-subsection) | `lifetime: 5m`<br>`size: 1000000` | Cache for objects (FrostFS headers). |
| `list` | [Cache config](#cache-subsection) | `lifetime: 60s`<br>`size: 100000` | Cache which keeps lists of objects in buckets. |
| `list_session` | [Cache config](#cache-subsection) | `lifetime: 60s`<br>`size: 100` | Cache which keeps listing session. |
| `names` | [Cache config](#cache-subsection) | `lifetime: 60s`<br>`size: 10000` | Cache which contains mapping of nice name to object addresses. |
| `buckets` | [Cache config](#cache-subsection) | `lifetime: 60s`<br>`size: 1000` | Cache which contains mapping of bucket name to bucket info. |
| `system` | [Cache config](#cache-subsection) | `lifetime: 5m`<br>`size: 10000` | Cache for system objects in a bucket: bucket settings, notification configuration etc. |

1
internal/logs/logs.go
View file

@ -95,6 +95,7 @@ const (
CouldntCacheAccessControlOperation = "couldn't cache access control operation" // Warn in ../../api/layer/cache.go
CouldntPutObjAddressToNameCache = "couldn't put obj address to name cache" // Warn in ../../api/layer/cache.go
CouldntCacheListOfObjects = "couldn't cache list of objects" // Warn in ../../api/layer/cache.go
CouldntCacheListSession = "couldn't cache list session" // Warn in ../../api/layer/cache.go
CouldntCacheTags = "couldn't cache tags" // Error in ../../api/layer/cache.go
CouldntCacheLockInfo = "couldn't cache lock info" // Error in ../../api/layer/cache.go
CouldntCacheBucketSettings = "couldn't cache bucket settings" // Warn in ../../api/layer/cache.go

2
pkg/service/tree/tree.go
View file

@ -740,7 +740,7 @@ func (s *LatestVersionsByPrefixStreamImpl) Next(ctx context.Context) (*data.Node
return newNodeVersionFromTreeNode(filepath, treeNode), nil
}
func (c *Tree) GetLatestVersionsByPrefixStream(ctx context.Context, bktInfo *data.BucketInfo, prefix string) (layer.LatestVersionsByPrefixStream, error) {
func (c *Tree) GetLatestVersionsByPrefixStream(ctx context.Context, bktInfo *data.BucketInfo, prefix string) (data.VersionsStream, error) {
mainStream, tailPrefix, rootID, err := c.getSubTreeByPrefixMainStream(ctx, bktInfo, versionTree, prefix)
if err != nil {
if errors.Is(err, io.EOF) {