44 lines
832 B
Go
44 lines
832 B
Go
package events
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import (
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"context"
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"sync"
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lru "github.com/hashicorp/golang-lru"
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"github.com/ipfs/go-cid"
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"github.com/filecoin-project/lotus/api"
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)
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type messageCache struct {
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api EventAPI
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blockMsgLk sync.Mutex
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blockMsgCache *lru.ARCCache
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}
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func newMessageCache(api EventAPI) *messageCache {
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blsMsgCache, _ := lru.NewARC(500)
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return &messageCache{
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api: api,
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blockMsgCache: blsMsgCache,
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}
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}
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func (c *messageCache) ChainGetBlockMessages(ctx context.Context, blkCid cid.Cid) (*api.BlockMessages, error) {
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c.blockMsgLk.Lock()
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defer c.blockMsgLk.Unlock()
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msgsI, ok := c.blockMsgCache.Get(blkCid)
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var err error
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if !ok {
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msgsI, err = c.api.ChainGetBlockMessages(ctx, blkCid)
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if err != nil {
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return nil, err
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}
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c.blockMsgCache.Add(blkCid, msgsI)
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}
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return msgsI.(*api.BlockMessages), nil
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}
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