feat: store protocol param updates (#143)

go.mod

@@ -3,7 +3,7 @@ module github.com/blinklabs-io/node
 go 1.22
 
 require (
-	github.com/blinklabs-io/gouroboros v0.94.3
+	github.com/blinklabs-io/gouroboros v0.95.0
 	github.com/blinklabs-io/ouroboros-mock v0.3.3
 	github.com/dgraph-io/badger/v4 v4.3.0
 	github.com/glebarez/sqlite v1.11.0

go.sum

@@ -4,8 +4,8 @@ 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 v0.94.3 h1:eR26ONYtxDA7Z8UPNyknwD95LBeSC6rzaYndM5Ai03g=
-github.com/blinklabs-io/gouroboros v0.94.3/go.mod h1:lfvV4sV5tNz/qkaLiR85pKpKqPlHfAa5wFhWGbgsXZ0=
+github.com/blinklabs-io/gouroboros v0.95.0 h1:UulpeG/FXsMGozGuoxPP49uUW1+SYyFZc2dohs5acKc=
+github.com/blinklabs-io/gouroboros v0.95.0/go.mod h1:lfvV4sV5tNz/qkaLiR85pKpKqPlHfAa5wFhWGbgsXZ0=
 github.com/blinklabs-io/ouroboros-mock v0.3.3 h1:c6jN9qcLzNQSVh3zjPE61gF33UkkRRIiNqSGBkZ10cY=
 github.com/blinklabs-io/ouroboros-mock v0.3.3/go.mod h1:UXkR/8qA5w/WtkzffOIdXudgOndN99DEorgRwy4ynN8=
 github.com/cenkalti/backoff/v4 v4.3.0 h1:MyRJ/UdXutAwSAT+s3wNd7MfTIcy71VQueUuFK343L8=

state/models/pparam_update.go

@@ -0,0 +1,27 @@
+// Copyright 2024 Blink Labs Software
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package models
+
+type PParamUpdate struct {
+	ID          uint `gorm:"primarykey"`
+	AddedSlot   uint64
+	Epoch       uint64
+	GenesisHash [28]byte
+	Cbor        []byte
+}
+
+func (PParamUpdate) TableName() string {
+	return "pparam_update"
+}

state/state.go

@@ -251,6 +251,20 @@ func (ls *LedgerState) handleEventChainSyncBlock(e ChainsyncEvent) error {
 				}
 			}
 			// XXX: generate event for each TX/UTxO?
+			// Protocol parameter updates
+			if updateEpoch, paramUpdates := tx.ProtocolParameterUpdates(); updateEpoch > 0 {
+				for genesisHash, update := range paramUpdates {
+					tmpUpdate := models.PParamUpdate{
+						AddedSlot:   e.Point.Slot,
+						Epoch:       updateEpoch,
+						GenesisHash: genesisHash,
+						Cbor:        update.Cbor(),
+					}
+					if result := txn.Metadata().Create(&tmpUpdate); result.Error != nil {
+						return result.Error
+					}
+				}
+			}
 		}
 		return nil
 	})