mirror of https://github.com/milvus-io/milvus.git
50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
package client
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import (
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"context"
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"github.com/milvus-io/milvus/client/v2/entity"
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"github.com/milvus-io/milvus/pkg/util/conc"
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"github.com/milvus-io/milvus/pkg/util/typeutil"
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)
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// CollectionCache stores the cached collection schema information.
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type CollectionCache struct {
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sf conc.Singleflight[*entity.Collection]
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collections *typeutil.ConcurrentMap[string, *entity.Collection]
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fetcher func(context.Context, string) (*entity.Collection, error)
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}
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func (c *CollectionCache) GetCollection(ctx context.Context, collName string) (*entity.Collection, error) {
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coll, ok := c.collections.Get(collName)
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if ok {
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return coll, nil
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}
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coll, err, _ := c.sf.Do(collName, func() (*entity.Collection, error) {
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coll, err := c.fetcher(ctx, collName)
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if err != nil {
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return nil, err
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}
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c.collections.Insert(collName, coll)
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return coll, nil
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})
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return coll, err
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}
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// Reset clears all cached info, used when client switching env.
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func (c *CollectionCache) Reset() {
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c.collections = typeutil.NewConcurrentMap[string, *entity.Collection]()
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}
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func NewCollectionCache(fetcher func(context.Context, string) (*entity.Collection, error)) *CollectionCache {
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return &CollectionCache{
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collections: typeutil.NewConcurrentMap[string, *entity.Collection](),
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fetcher: fetcher,
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}
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}
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func (c *Client) getCollection(ctx context.Context, collName string) (*entity.Collection, error) {
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return c.collCache.GetCollection(ctx, collName)
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}
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