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fix potential panic with max readers retry and cursor channel

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This commit is contained in:
vyzo 2021-02-01 18:39:50 +02:00
parent b9f8a3d587
commit d91b60df91
1 changed files with 2 additions and 1 deletions
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3
chain/store/splitstore/snoop.go
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@ -131,10 +131,11 @@ func (s *trackingStore) Delete(cid cid.Cid) error {
func (s *trackingStore) Keys(ctx context.Context) (<-chan cid.Cid, error) { func (s *trackingStore) Keys(ctx context.Context) (<-chan cid.Cid, error) {
ch := make(chan cid.Cid) ch := make(chan cid.Cid)
go func() { go func() {
defer close(ch)
err := withMaxReadersRetry( err := withMaxReadersRetry(
func() error { func() error {
return s.env.View(func(txn *lmdb.Txn) error { return s.env.View(func(txn *lmdb.Txn) error {
defer close(ch)
txn.RawRead = true txn.RawRead = true
cur, err := txn.OpenCursor(s.db) cur, err := txn.OpenCursor(s.db)