DragonX/lightwalletd
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Thread safe cache with separate ingestor

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This commit is contained in:
Aditya Kulkarni
2019-09-25 21:15:32 -07:00
parent fbb75e8f20
commit a8cc2424a2
6 changed files with 193 additions and 131 deletions
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35
frontend/service.go
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@@ -27,39 +27,25 @@ type SqlStreamer struct {
log *logrus.Entry
}
func NewSQLiteStreamer(client *rpcclient.Client, log *logrus.Entry) (walletrpc.CompactTxStreamerServer, error) {
return &SqlStreamer{common.New(100000), client, log}, nil
func NewSQLiteStreamer(client *rpcclient.Client, cache *common.BlockCache, log *logrus.Entry) (walletrpc.CompactTxStreamerServer, error) {
return &SqlStreamer{cache, client, log}, nil
}
func (s *SqlStreamer) GracefulStop() error {
return nil
}
func (s *SqlStreamer) GetCache() *common.BlockCache {
return s.cache
}
func (s *SqlStreamer) GetLatestBlock(ctx context.Context, placeholder *walletrpc.ChainSpec) (*walletrpc.BlockID, error) {
result, rpcErr := s.client.RawRequest("getinfo", make([]json.RawMessage, 0))
latestBlock := s.cache.GetLatestBlock()
var err error
var errCode int64
// For some reason, the error responses are not JSON
if rpcErr != nil {
errParts := strings.SplitN(rpcErr.Error(), ":", 2)
errCode, err = strconv.ParseInt(errParts[0], 10, 32)
//Check to see if we are requesting a height the zcashd doesn't have yet
if err == nil && errCode == -8 {
return nil, errors.New("Don't have the requested block")
}
return nil, err
if latestBlock == -1 {
return nil, errors.New("Cache is empty. Server is probably not yet ready.")
}
var f interface{}
err = json.Unmarshal(result, &f)
if err != nil {
return nil, err
}
latestBlock := f.(map[string]interface{})["blocks"].(float64)
// TODO: also return block hashes here
return &walletrpc.BlockID{Height: uint64(latestBlock)}, nil
}
@@ -243,7 +229,7 @@ func (s *SqlStreamer) GetTransaction(ctx context.Context, txf *walletrpc.TxFilte
// GetLightdInfo gets the LightWalletD (this server) info
func (s *SqlStreamer) GetLightdInfo(ctx context.Context, in *walletrpc.Empty) (*walletrpc.LightdInfo, error) {
saplingHeight, chainName, consensusBranchId, err := common.GetSaplingInfo(s.client)
saplingHeight, blockHeight, chainName, consensusBranchId, err := common.GetSaplingInfo(s.client)
if err != nil {
s.log.WithFields(logrus.Fields{
@@ -261,6 +247,7 @@ func (s *SqlStreamer) GetLightdInfo(ctx context.Context, in *walletrpc.Empty) (*
ChainName: chainName,
SaplingActivationHeight: uint64(saplingHeight),
ConsensusBranchId: consensusBranchId,
BlockHeight: uint64(blockHeight),
}, nil
}