fix(distribution): correct default for deprecated distribution params

proto/cosmos/distribution/v1beta1/distribution.proto

@@ -19,14 +19,17 @@ message Params {
     (gogoproto.nullable)   = false
   ];
 
-  // The base_proposer_reward and bonus_proposer_reward fields are deprecated
-  // and are no longer used in the x/distribution module's reward mechanism.
+  // Deprecated: The base_proposer_reward field is deprecated and is no longer used
+  // in the x/distribution module's reward mechanism.
   string base_proposer_reward = 2 [
     (cosmos_proto.scalar)  = "cosmos.Dec",
     (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Dec",
     (gogoproto.nullable)   = false,
     deprecated             = true
   ];
+
+  // Deprecated: The bonus_proposer_reward field is deprecated and is no longer used
+  // in the x/distribution module's reward mechanism.
   string bonus_proposer_reward = 3 [
     (cosmos_proto.scalar)  = "cosmos.Dec",
     (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Dec",

tests/e2e/distribution/suite.go

@@ -80,13 +80,13 @@ func (s *E2ETestSuite) TestGetCmdQueryParams() {
 		{
 			"json output",
 			[]string{fmt.Sprintf("--%s=json", flags.FlagOutput)},
-			`{"community_tax":"0.020000000000000000","base_proposer_reward":"0.010000000000000000","bonus_proposer_reward":"0.040000000000000000","withdraw_addr_enabled":true}`,
+			`{"community_tax":"0.020000000000000000","base_proposer_reward":"0.000000000000000000","bonus_proposer_reward":"0.000000000000000000","withdraw_addr_enabled":true}`,
 		},
 		{
 			"text output",
 			[]string{fmt.Sprintf("--%s=text", flags.FlagOutput)},
-			`base_proposer_reward: "0.010000000000000000"
-bonus_proposer_reward: "0.040000000000000000"
+			`base_proposer_reward: "0.000000000000000000"
+bonus_proposer_reward: "0.000000000000000000"
 community_tax: "0.020000000000000000"
 withdraw_addr_enabled: true`,
 		},

tests/fixtures/adr-024-coin-metadata_genesis.json

@@ -172,8 +172,8 @@
     "distribution": {
       "params": {
         "community_tax": "0.020000000000000000",
-        "base_proposer_reward": "0.010000000000000000",
-        "bonus_proposer_reward": "0.040000000000000000",
+        "base_proposer_reward": "0.000000000000000000",
+        "bonus_proposer_reward": "0.000000000000000000",
         "withdraw_addr_enabled": true
       },
       "fee_pool": {

tests/integration/distribution/keeper/common_test.go

@@ -15,7 +15,6 @@ var (
 	valConsPk2 = PKS[2]
 
 	valConsAddr0 = sdk.ConsAddress(valConsPk0.Address())
-	valConsAddr1 = sdk.ConsAddress(valConsPk1.Address())
 
 	distrAcc = authtypes.NewEmptyModuleAccount(types.ModuleName)
 )

tests/integration/distribution/keeper/grpc_query_test.go

@@ -95,8 +95,8 @@ func (suite *KeeperTestSuite) TestGRPCParams() {
 			func() {
 				params = types.Params{
 					CommunityTax:        sdk.NewDecWithPrec(3, 1),
-					BaseProposerReward:  sdk.NewDecWithPrec(2, 1),
-					BonusProposerReward: sdk.NewDecWithPrec(1, 1),
+					BaseProposerReward:  sdk.ZeroDec(),
+					BonusProposerReward: sdk.ZeroDec(),
 					WithdrawAddrEnabled: true,
 				}
 
@@ -117,7 +117,7 @@ func (suite *KeeperTestSuite) TestGRPCParams() {
 			if testCase.expPass {
 				suite.Require().NoError(err)
 				suite.Require().NotNil(paramsRes)
-				suite.Require().Equal(paramsRes.Params, expParams)
+				suite.Require().Equal(expParams, paramsRes.Params)
 			} else {
 				suite.Require().Error(err)
 			}

tests/integration/distribution/keeper/msg_server_test.go

@@ -12,9 +12,7 @@ import (
 
 func (s *KeeperTestSuite) TestMsgUpdateParams() {
 	// default params
-	communityTax := sdk.NewDecWithPrec(2, 2)        // 2%
-	baseProposerReward := sdk.NewDecWithPrec(1, 2)  // 1%
-	bonusProposerReward := sdk.NewDecWithPrec(4, 2) // 4%
+	communityTax := sdk.NewDecWithPrec(2, 2) // 2%
 	withdrawAddrEnabled := true
 
 	testCases := []struct {
@@ -29,9 +27,9 @@ func (s *KeeperTestSuite) TestMsgUpdateParams() {
 				Authority: "invalid",
 				Params: types.Params{
 					CommunityTax:        sdk.NewDecWithPrec(2, 0),
-					BaseProposerReward:  baseProposerReward,
-					BonusProposerReward: bonusProposerReward,
 					WithdrawAddrEnabled: withdrawAddrEnabled,
+					BaseProposerReward:  sdk.ZeroDec(),
+					BonusProposerReward: sdk.ZeroDec(),
 				},
 			},
 			expErr:    true,
@@ -43,9 +41,9 @@ func (s *KeeperTestSuite) TestMsgUpdateParams() {
 				Authority: s.distrKeeper.GetAuthority(),
 				Params: types.Params{
 					CommunityTax:        sdk.NewDecWithPrec(2, 0),
-					BaseProposerReward:  baseProposerReward,
-					BonusProposerReward: bonusProposerReward,
 					WithdrawAddrEnabled: withdrawAddrEnabled,
+					BaseProposerReward:  sdk.ZeroDec(),
+					BonusProposerReward: sdk.ZeroDec(),
 				},
 			},
 			expErr:    true,
@@ -57,78 +55,50 @@ func (s *KeeperTestSuite) TestMsgUpdateParams() {
 				Authority: s.distrKeeper.GetAuthority(),
 				Params: types.Params{
 					CommunityTax:        sdk.NewDecWithPrec(-2, 1),
-					BaseProposerReward:  baseProposerReward,
-					BonusProposerReward: bonusProposerReward,
 					WithdrawAddrEnabled: withdrawAddrEnabled,
+					BaseProposerReward:  sdk.ZeroDec(),
+					BonusProposerReward: sdk.ZeroDec(),
 				},
 			},
 			expErr:    true,
 			expErrMsg: "community tax should be non-negative and less than one",
 		},
 		{
-			name: "base proposer reward > 1",
+			name: "base proposer reward set",
 			input: &types.MsgUpdateParams{
 				Authority: s.distrKeeper.GetAuthority(),
 				Params: types.Params{
 					CommunityTax:        communityTax,
-					BaseProposerReward:  sdk.NewDecWithPrec(2, 0),
-					BonusProposerReward: bonusProposerReward,
+					BaseProposerReward:  sdk.NewDecWithPrec(1, 2),
+					BonusProposerReward: sdk.ZeroDec(),
 					WithdrawAddrEnabled: withdrawAddrEnabled,
 				},
 			},
 			expErr:    true,
-			expErrMsg: "sum of base, bonus proposer rewards, and community tax cannot be greater than one",
+			expErrMsg: "cannot update base or bonus proposer reward because these are deprecated fields: invalid request",
 		},
 		{
-			name: "negative base proposer reward",
+			name: "bonus proposer reward set",
 			input: &types.MsgUpdateParams{
 				Authority: s.distrKeeper.GetAuthority(),
 				Params: types.Params{
 					CommunityTax:        communityTax,
-					BaseProposerReward:  sdk.NewDecWithPrec(-2, 0),
-					BonusProposerReward: bonusProposerReward,
+					BaseProposerReward:  sdk.ZeroDec(),
+					BonusProposerReward: sdk.NewDecWithPrec(1, 2),
 					WithdrawAddrEnabled: withdrawAddrEnabled,
 				},
 			},
 			expErr:    true,
-			expErrMsg: "base proposer reward should be positive",
-		},
-		{
-			name: "bonus proposer reward > 1",
-			input: &types.MsgUpdateParams{
-				Authority: s.distrKeeper.GetAuthority(),
-				Params: types.Params{
-					CommunityTax:        communityTax,
-					BaseProposerReward:  baseProposerReward,
-					BonusProposerReward: sdk.NewDecWithPrec(2, 0),
-					WithdrawAddrEnabled: withdrawAddrEnabled,
-				},
-			},
-			expErr:    true,
-			expErrMsg: "sum of base, bonus proposer rewards, and community tax cannot be greater than one",
-		},
-		{
-			name: "negative bonus proposer reward",
-			input: &types.MsgUpdateParams{
-				Authority: s.distrKeeper.GetAuthority(),
-				Params: types.Params{
-					CommunityTax:        communityTax,
-					BaseProposerReward:  baseProposerReward,
-					BonusProposerReward: sdk.NewDecWithPrec(-2, 0),
-					WithdrawAddrEnabled: withdrawAddrEnabled,
-				},
-			},
-			expErr:    true,
-			expErrMsg: "bonus proposer reward should be positive",
+			expErrMsg: "cannot update base or bonus proposer reward because these are deprecated fields: invalid request",
 		},
 		{
 			name: "all good",
 			input: &types.MsgUpdateParams{
 				Authority: s.distrKeeper.GetAuthority(),
 				Params: types.Params{
 					CommunityTax:        communityTax,
-					BaseProposerReward:  baseProposerReward,
-					BonusProposerReward: bonusProposerReward,
+					BaseProposerReward:  sdk.ZeroDec(),
+					BonusProposerReward: sdk.ZeroDec(),
 					WithdrawAddrEnabled: withdrawAddrEnabled,
 				},
 			},

x/bank/simulation/genesis_test.go

@@ -41,7 +41,7 @@ func TestRandomizedGenState(t *testing.T) {
 	simState.Cdc.MustUnmarshalJSON(simState.GenState[types.ModuleName], &bankGenesis)
 
 	assert.Equal(t, true, bankGenesis.Params.GetDefaultSendEnabled(), "Params.GetDefaultSendEnabled")
-	assert.Len(t, bankGenesis.Params.GetSendEnabled(), 0, "Params.GetSendEnabled") //nolint:staticcheck // SA1019: Params.GetSendEnabled is deprecated: use SendEnabled instead.
+	assert.Len(t, bankGenesis.Params.GetSendEnabled(), 0, "Params.GetSendEnabled") //nolint:staticcheck
 	if assert.Len(t, bankGenesis.Balances, 3) {
 		assert.Equal(t, "cosmos1ghekyjucln7y67ntx7cf27m9dpuxxemn4c8g4r", bankGenesis.Balances[2].GetAddress().String(), "Balances[2] address")
 		assert.Equal(t, "1000stake", bankGenesis.Balances[2].GetCoins().String(), "Balances[2] coins")

x/distribution/README.md

@@ -512,12 +512,10 @@ The distribution module contains the following parameters:
 | Key                 | Type         | Example                    |
 | ------------------- | ------------ | -------------------------- |
 | communitytax        | string (dec) | "0.020000000000000000" [0] |
-| baseproposerreward  | string (dec) | "0.010000000000000000" [0] |
-| bonusproposerreward | string (dec) | "0.040000000000000000" [0] |
 | withdrawaddrenabled | bool         | true                       |
 
-* [0] `communitytax`, `baseproposerreward` and `bonusproposerreward` must be
-  positive and their sum cannot exceed 1.00.
+* [0] `communitytax` must be positive and cannot exceed 1.00.
+* `baseproposerreward` and `bonusproposerreward` were parameters that are deprecated in v0.47 and are not used.
 
 ## Client
 
@@ -594,8 +592,8 @@ simd query distribution params
 Example Output:
 
 ```yml
-base_proposer_reward: "0.010000000000000000"
-bonus_proposer_reward: "0.040000000000000000"
+base_proposer_reward: "0.000000000000000000"
+bonus_proposer_reward: "0.000000000000000000"
 community_tax: "0.020000000000000000"
 withdraw_addr_enabled: true
 ```
@@ -781,8 +779,8 @@ Example Output:
 {
   "params": {
     "communityTax": "20000000000000000",
-    "baseProposerReward": "10000000000000000",
-    "bonusProposerReward": "40000000000000000",
+    "baseProposerReward": "00000000000000000",
+    "bonusProposerReward": "00000000000000000",
     "withdrawAddrEnabled": true
   }
 }

x/distribution/keeper/msg_server.go

@@ -120,6 +120,11 @@ func (k msgServer) UpdateParams(goCtx context.Context, req *types.MsgUpdateParam
 		return nil, errors.Wrapf(govtypes.ErrInvalidSigner, "invalid authority; expected %s, got %s", k.authority, req.Authority)
 	}
 
+	if (!req.Params.BaseProposerReward.IsNil() && !req.Params.BaseProposerReward.IsZero()) || //nolint:staticcheck
+		(!req.Params.BonusProposerReward.IsNil() && !req.Params.BonusProposerReward.IsZero()) { //nolint:staticcheck
+		return nil, errors.Wrapf(errors.ErrInvalidRequest, "cannot update base or bonus proposer reward because these are deprecated fields")
+	}
+
 	ctx := sdk.UnwrapSDKContext(goCtx)
 	if err := k.SetParams(ctx, req.Params); err != nil {
 		return nil, err