convert vote extension to protobuf & use legacyDec.BigInt

proto/kujira/oracle/extension.proto

@@ -0,0 +1,28 @@
+syntax = "proto3";
+package kujira.oracle;
+
+import "gogoproto/gogo.proto";
+import "kujira/oracle/genesis.proto";
+import "tendermint/abci/types.proto";
+
+option go_package = "github.com/Team-Kujira/core/x/oracle/types";
+
+message DenomPrice {
+  string denom = 1;
+  string price = 2 [
+    (gogoproto.nullable) = false,
+    (gogoproto.customtype) = "cosmossdk.io/math.Int"
+  ];
+}
+
+message VoteExtension {
+  int64 height = 1;
+  repeated DenomPrice prices = 2 [ (gogoproto.nullable) = false ];
+}
+
+// VoteExtensionTx defines vote extension execution tx
+message VoteExtensionTx {
+  repeated DenomPrice stake_weighted_prices = 1 [ (gogoproto.nullable) = false ];
+  MissCounter miss_counter = 2 [ (gogoproto.nullable) = false ];
+  tendermint.abci.ExtendedCommitInfo extended_commit_info = 3 [ (gogoproto.nullable) = false ];
+}

x/oracle/abci/proposal.go

@@ -16,6 +16,7 @@ import (
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/cosmos/cosmos-sdk/types/mempool"
 	"github.com/cosmos/cosmos-sdk/types/module"
+	"github.com/cosmos/gogoproto/proto"
 )
 
 // StakeWeightedPrices defines the structure a proposer should use to calculate
@@ -248,13 +249,15 @@ func (h *ProposalHandler) GetBallotByDenom(ci abci.ExtendedCommitInfo, validator
 		if ok {
 			power := claim.Power
 
-			var voteExt OracleVoteExtension
-			if err := json.Unmarshal(v.VoteExtension, &voteExt); err != nil {
+			var voteExt types.VoteExtension
+			if err := proto.Unmarshal(v.VoteExtension, &voteExt); err != nil {
 				h.logger.Error("failed to decode vote extension", "err", err, "validator", fmt.Sprintf("%x", v.Validator.Address))
 				return votes
 			}
 
-			for base, price := range voteExt.Prices {
+			for _, denomPrice := range voteExt.Prices {
+				base := denomPrice.Denom
+				price := math.LegacyNewDecFromBigIntWithPrec(denomPrice.Price.BigInt(), math.LegacyPrecision)
 				tmpPower := power
 				if !price.IsPositive() {
 					// Make the power of abstain vote zero