feat: genesis config ledger query (#320)

Author: agaffney

go.mod

@@ -6,7 +6,7 @@ require (
 	connectrpc.com/connect v1.17.0
 	connectrpc.com/grpchealth v1.3.0
 	connectrpc.com/grpcreflect v1.2.0
-	github.com/blinklabs-io/gouroboros v0.106.1
+	github.com/blinklabs-io/gouroboros v0.106.2
 	github.com/blinklabs-io/ouroboros-mock v0.3.5
 	github.com/dgraph-io/badger/v4 v4.5.0
 	github.com/glebarez/sqlite v1.11.0

go.sum

@@ -10,8 +10,8 @@ filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/blinklabs-io/gouroboros v0.106.1 h1:QkPpF4sQAmslUBhilY3m5aOh3CxIjkkGU49K5LHDYwc=
-github.com/blinklabs-io/gouroboros v0.106.1/go.mod h1:eXNqQgN88MHZKtNNlmeKtE8xygENLzOsmG2cVSdM9aU=
+github.com/blinklabs-io/gouroboros v0.106.2 h1:4J87NAdpBvQrkZWNrYs1GOkcDgK5YxdlNvqsEDa/tgM=
+github.com/blinklabs-io/gouroboros v0.106.2/go.mod h1:eXNqQgN88MHZKtNNlmeKtE8xygENLzOsmG2cVSdM9aU=
 github.com/blinklabs-io/ouroboros-mock v0.3.5 h1:/KWbSoH8Pjrd9uxOH7mVbI7XFsDCNW/O9FtLlvJDUpQ=
 github.com/blinklabs-io/ouroboros-mock v0.3.5/go.mod h1:JtUQ3Luo22hCnGBxuxNp6JaUx63VxidxWwmcaVMremw=
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=

state/queries.go

@@ -92,6 +92,8 @@ func (ls *LedgerState) queryShelley(query *olocalstatequery.ShelleyQuery) (any,
 		return []any{ls.currentEpoch.EpochId}, nil
 	case *olocalstatequery.ShelleyCurrentProtocolParamsQuery:
 		return []any{ls.currentPParams}, nil
+	case *olocalstatequery.ShelleyGenesisConfigQuery:
+		return ls.queryShelleyGenesisConfig()
 	case *olocalstatequery.ShelleyUtxoByAddressQuery:
 		return ls.queryShelleyUtxoByAddress(q.Addrs)
 	case *olocalstatequery.ShelleyUtxoByTxinQuery:
@@ -126,6 +128,14 @@ func (ls *LedgerState) queryShelley(query *olocalstatequery.ShelleyQuery) (any,
 	}
 }
 
+func (ls *LedgerState) queryShelleyGenesisConfig() (any, error) {
+	shelleyGenesis, err := ls.config.CardanoNodeConfig.ShelleyGenesis()
+	if err != nil {
+		return nil, err
+	}
+	return []any{shelleyGenesis}, nil
+}
+
 func (ls *LedgerState) queryShelleyUtxoByAddress(addrs []ledger.Address) (any, error) {
 	ret := make(map[olocalstatequery.UtxoId]ledger.TransactionOutput)
 	// TODO: support multiple addresses