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Remove once.do

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This commit is contained in:
atvanguard 2020-05-06 17:14:53 +05:30
parent 54bbdff1e4
commit 50c0b662cf
1 changed files with 9 additions and 8 deletions
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17
consensus/bor/api.go
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@ -35,7 +35,6 @@ import (
var ( var (
// MaxCheckpointLength is the maximum number of blocks that can be requested for constructing a checkpoint root hash // MaxCheckpointLength is the maximum number of blocks that can be requested for constructing a checkpoint root hash
MaxCheckpointLength = uint64(math.Pow(2, 15)) MaxCheckpointLength = uint64(math.Pow(2, 15))
once sync.Once
) )
// API is a user facing RPC API to allow controlling the signer and voting // API is a user facing RPC API to allow controlling the signer and voting
@ -124,13 +123,7 @@ func (api *API) GetCurrentValidators() ([]*Validator, error) {
// GetRootHash returns the merkle root of the start to end block headers // GetRootHash returns the merkle root of the start to end block headers
func (api *API) GetRootHash(start int64, end int64) ([]byte, error) { func (api *API) GetRootHash(start int64, end int64) ([]byte, error) {
var err error if err := api.initializeRootHashCache(); err != nil {
once.Do(func() {
if api.rootHashCache == nil {
api.rootHashCache, err = lru.NewARC(10)
}
})
if err != nil {
return nil, err return nil, err
} }
key := getRootHashKey(start, end) key := getRootHashKey(start, end)
@ -184,6 +177,14 @@ func (api *API) GetRootHash(start int64, end int64) ([]byte, error) {
return root, nil return root, nil
} }
func (api *API) initializeRootHashCache() error {
var err error
if api.rootHashCache == nil {
api.rootHashCache, err = lru.NewARC(10)
}
return err
}
func getRootHashKey(start int64, end int64) string { func getRootHashKey(start int64, end int64) string {
return strconv.FormatInt(start, 10) + "-" + strconv.FormatInt(end, 10) return strconv.FormatInt(start, 10) + "-" + strconv.FormatInt(end, 10)
} }