forked from TrueCloudLab/frostfs-s3-gw
127 lines
3.2 KiB
Go
127 lines
3.2 KiB
Go
package cache
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import (
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"fmt"
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"time"
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"github.com/bluele/gcache"
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"github.com/nspcc-dev/neofs-s3-gw/api/data"
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"go.uber.org/zap"
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)
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// SystemCache provides lru cache for objects.
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// This cache contains "system" objects (bucket versioning settings, tagging object etc.).
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// Key is bucketName+systemFileName.
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type SystemCache struct {
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cache gcache.Cache
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logger *zap.Logger
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}
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const (
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// DefaultSystemCacheSize is a default maximum number of entries in cache.
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DefaultSystemCacheSize = 1e4
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// DefaultSystemCacheLifetime is a default lifetime of entries in cache.
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DefaultSystemCacheLifetime = 5 * time.Minute
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)
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// DefaultSystemConfig returns new default cache expiration values.
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func DefaultSystemConfig(logger *zap.Logger) *Config {
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return &Config{
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Size: DefaultSystemCacheSize,
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Lifetime: DefaultSystemCacheLifetime,
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Logger: logger,
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}
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}
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// NewSystemCache creates an object of SystemCache.
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func NewSystemCache(config *Config) *SystemCache {
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gc := gcache.New(config.Size).LRU().Expiration(config.Lifetime).Build()
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return &SystemCache{cache: gc, logger: config.Logger}
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}
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// GetObject returns a cached object.
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func (o *SystemCache) GetObject(key string) *data.ObjectInfo {
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entry, err := o.cache.Get(key)
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if err != nil {
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return nil
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}
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result, ok := entry.(*data.ObjectInfo)
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if !ok {
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o.logger.Warn("invalid cache entry type", zap.String("actual", fmt.Sprintf("%T", entry)),
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zap.String("expected", fmt.Sprintf("%T", result)))
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return nil
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}
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return result
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}
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func (o *SystemCache) GetCORS(key string) *data.CORSConfiguration {
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entry, err := o.cache.Get(key)
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if err != nil {
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return nil
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}
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result, ok := entry.(*data.CORSConfiguration)
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if !ok {
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o.logger.Warn("invalid cache entry type", zap.String("actual", fmt.Sprintf("%T", entry)),
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zap.String("expected", fmt.Sprintf("%T", result)))
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return nil
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}
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return result
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}
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func (o *SystemCache) GetSettings(key string) *data.BucketSettings {
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entry, err := o.cache.Get(key)
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if err != nil {
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return nil
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}
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result, ok := entry.(*data.BucketSettings)
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if !ok {
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o.logger.Warn("invalid cache entry type", zap.String("actual", fmt.Sprintf("%T", entry)),
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zap.String("expected", fmt.Sprintf("%T", result)))
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return nil
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}
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return result
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}
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func (o *SystemCache) GetNotificationConfiguration(key string) *data.NotificationConfiguration {
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entry, err := o.cache.Get(key)
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if err != nil {
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return nil
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}
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result, ok := entry.(*data.NotificationConfiguration)
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if !ok {
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o.logger.Warn("invalid cache entry type", zap.String("actual", fmt.Sprintf("%T", entry)),
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zap.String("expected", fmt.Sprintf("%T", result)))
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return nil
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}
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return result
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}
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// PutObject puts an object to cache.
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func (o *SystemCache) PutObject(key string, obj *data.ObjectInfo) error {
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return o.cache.Set(key, obj)
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}
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func (o *SystemCache) PutCORS(key string, obj *data.CORSConfiguration) error {
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return o.cache.Set(key, obj)
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}
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func (o *SystemCache) PutSettings(key string, settings *data.BucketSettings) error {
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return o.cache.Set(key, settings)
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}
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func (o *SystemCache) PutNotificationConfiguration(key string, obj *data.NotificationConfiguration) error {
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return o.cache.Set(key, obj)
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}
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// Delete deletes an object from cache.
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func (o *SystemCache) Delete(key string) bool {
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return o.cache.Remove(key)
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}
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