fix: EOF on DB update deleted proposal from chain

database/gov.go

@@ -173,6 +173,29 @@ func (db *Db) GetProposal(id uint64) (types.Proposal, error) {
 	return proposal, nil
 }
 
+// GetProposalForUpdate returns a proposal with data required by NewProposalUpdate type
+func (db *Db) GetProposalForUpdate(id uint64) (types.ProposalUpdate, error) {
+	var proposalForUpdate types.ProposalUpdate
+	var rows []*dbtypes.ProposalRow
+
+	err := db.SQL.Select(&rows, `SELECT status, voting_start_time, voting_end_time FROM proposal WHERE id = $1`, id)
+	if err != nil {
+		return types.ProposalUpdate{}, err
+	}
+
+	if len(rows) == 0 {
+		return types.ProposalUpdate{}, nil
+	}
+
+	row := rows[0]
+	proposalForUpdate.ProposalID = id
+	proposalForUpdate.Status = row.Status
+	proposalForUpdate.VotingStartTime = dbtypes.NullTimeToTime(row.VotingStartTime)
+	proposalForUpdate.VotingEndTime = dbtypes.NullTimeToTime(row.VotingEndTime)
+
+	return proposalForUpdate, nil
+}
+
 // GetOpenProposalsIds returns all the ids of the proposals that are in deposit or voting period at the given block time
 func (db *Db) GetOpenProposalsIds(blockTime time.Time) ([]uint64, error) {
 	var ids []uint64

modules/gov/utils_proposal.go

@@ -82,17 +82,17 @@ func (m *Module) UpdateProposalStakingPoolSnapshot(height int64, blockVals *tmct
 // updateDeletedProposalStatus updates the proposal having the given id by setting its status
 // to the one that represents a deleted proposal
 func (m *Module) updateDeletedProposalStatus(id uint64) error {
-	stored, err := m.db.GetProposal(id)
+	proposalForUpdate, err := m.db.GetProposalForUpdate(id)
 	if err != nil {
 		return err
 	}
 
 	return m.db.UpdateProposal(
 		types.NewProposalUpdate(
-			stored.ID,
+			proposalForUpdate.ProposalID,
 			types.ProposalStatusInvalid,
-			stored.VotingStartTime,
-			stored.VotingEndTime,
+			proposalForUpdate.VotingStartTime,
+			proposalForUpdate.VotingEndTime,
 		),
 	)
 }