refactor(client): add client/Context.Codec and deprecate JSONCodec

CHANGELOG.md

@@ -57,6 +57,7 @@ if input key is empty, or input data contains empty key.
 * (x/staking) [\#9214](https://github.com/cosmos/cosmos-sdk/pull/9214) Added `new_shares` attribute inside `EventTypeDelegate` event.
 * [\#9382](https://github.com/cosmos/cosmos-sdk/pull/9382) feat: add Dec.Float64() function.
 * [\#9457](https://github.com/cosmos/cosmos-sdk/pull/9457) Add amino support for x/authz and x/feegrant Msgs.
+* [\#9498](https://github.com/cosmos/cosmos-sdk/pull/9498) Added `Codec: codec.Codec` attribute to `client/Context` structure.
 
 ### Client Breaking Changes
 
@@ -155,6 +156,8 @@ if input key is empty, or input data contains empty key.
 ### Deprecated
 
 * (grpc) [\#8926](https://github.com/cosmos/cosmos-sdk/pull/8926) The `tx` field in `SimulateRequest` has been deprecated, prefer to pass `tx_bytes` instead.
+* (sdk types) [\#9498](https://github.com/cosmos/cosmos-sdk/pull/9498) `clientContext.JSONCodec` will be removed in the next version. use `clientContext.Codec` instead.
+
 
 ## [v0.42.4](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.42.4) - 2021-04-08
 

client/context.go

@@ -22,10 +22,12 @@ import (
 // Context implements a typical context created in SDK modules for transaction
 // handling and queries.
 type Context struct {
-	FromAddress       sdk.AccAddress
-	Client            rpcclient.Client
-	ChainID           string
+	FromAddress sdk.AccAddress
+	Client      rpcclient.Client
+	ChainID     string
+	// Deprecated: Codec codec will be changed to Codec: codec.Codec
 	JSONCodec         codec.JSONCodec
+	Codec             codec.Codec
 	InterfaceRegistry codectypes.InterfaceRegistry
 	Input             io.Reader
 	Keyring           keyring.Keyring
@@ -72,9 +74,21 @@ func (ctx Context) WithInput(r io.Reader) Context {
 	return ctx
 }
 
-// WithJSONCodec returns a copy of the Context with an updated JSONCodec.
+// Deprecated: WithJSONCodec returns a copy of the Context with an updated JSONCodec.
 func (ctx Context) WithJSONCodec(m codec.JSONCodec) Context {
 	ctx.JSONCodec = m
+	// since we are using ctx.Codec everywhere in the SDK, for backward compatibility
+	// we need to try to set it here as well.
+	if c, ok := m.(codec.Codec); ok {
+		ctx.Codec = c
+	}
+	return ctx
+}
+
+// WithCodec returns a copy of the Context with an updated Codec.
+func (ctx Context) WithCodec(m codec.Codec) Context {
+	ctx.JSONCodec = m
+	ctx.Codec = m
 	return ctx
 }
 
@@ -254,10 +268,10 @@ func (ctx Context) PrintBytes(o []byte) error {
 
 // PrintProto outputs toPrint to the ctx.Output based on ctx.OutputFormat which is
 // either text or json. If text, toPrint will be YAML encoded. Otherwise, toPrint
-// will be JSON encoded using ctx.JSONCodec. An error is returned upon failure.
+// will be JSON encoded using ctx.Codec. An error is returned upon failure.
 func (ctx Context) PrintProto(toPrint proto.Message) error {
 	// always serialize JSON initially because proto json can't be directly YAML encoded
-	out, err := ctx.JSONCodec.MarshalJSON(toPrint)
+	out, err := ctx.Codec.MarshalJSON(toPrint)
 	if err != nil {
 		return err
 	}

client/context_test.go

@@ -41,7 +41,7 @@ func TestContext_PrintObject(t *testing.T) {
 	// proto
 	//
 	registry := testdata.NewTestInterfaceRegistry()
-	ctx = ctx.WithJSONCodec(codec.NewProtoCodec(registry))
+	ctx = ctx.WithCodec(codec.NewProtoCodec(registry))
 
 	// json
 	buf := &bytes.Buffer{}

client/debug/main.go

@@ -32,7 +32,7 @@ func Cmd() *cobra.Command {
 // getPubKeyFromString decodes SDK PubKey using JSON marshaler.
 func getPubKeyFromString(ctx client.Context, pkstr string) (cryptotypes.PubKey, error) {
 	var pk cryptotypes.PubKey
-	err := ctx.JSONCodec.UnmarshalInterfaceJSON([]byte(pkstr), &pk)
+	err := ctx.Codec.UnmarshalInterfaceJSON([]byte(pkstr), &pk)
 	return pk, err
 }
 

client/grpc/tmservice/service_test.go

@@ -57,7 +57,7 @@ func (s IntegrationTestSuite) TestQueryNodeInfo() {
 	restRes, err := rest.GetRequest(fmt.Sprintf("%s/cosmos/base/tendermint/v1beta1/node_info", val.APIAddress))
 	s.Require().NoError(err)
 	var getInfoRes tmservice.GetNodeInfoResponse
-	s.Require().NoError(val.ClientCtx.JSONCodec.UnmarshalJSON(restRes, &getInfoRes))
+	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(restRes, &getInfoRes))
 	s.Require().Equal(getInfoRes.ApplicationVersion.AppName, version.NewInfo().AppName)
 }
 
@@ -70,7 +70,7 @@ func (s IntegrationTestSuite) TestQuerySyncing() {
 	restRes, err := rest.GetRequest(fmt.Sprintf("%s/cosmos/base/tendermint/v1beta1/syncing", val.APIAddress))
 	s.Require().NoError(err)
 	var syncingRes tmservice.GetSyncingResponse
-	s.Require().NoError(val.ClientCtx.JSONCodec.UnmarshalJSON(restRes, &syncingRes))
+	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(restRes, &syncingRes))
 }
 
 func (s IntegrationTestSuite) TestQueryLatestBlock() {
@@ -82,7 +82,7 @@ func (s IntegrationTestSuite) TestQueryLatestBlock() {
 	restRes, err := rest.GetRequest(fmt.Sprintf("%s/cosmos/base/tendermint/v1beta1/blocks/latest", val.APIAddress))
 	s.Require().NoError(err)
 	var blockInfoRes tmservice.GetLatestBlockResponse
-	s.Require().NoError(val.ClientCtx.JSONCodec.UnmarshalJSON(restRes, &blockInfoRes))
+	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(restRes, &blockInfoRes))
 }
 
 func (s IntegrationTestSuite) TestQueryBlockByHeight() {
@@ -93,7 +93,7 @@ func (s IntegrationTestSuite) TestQueryBlockByHeight() {
 	restRes, err := rest.GetRequest(fmt.Sprintf("%s/cosmos/base/tendermint/v1beta1/blocks/%d", val.APIAddress, 1))
 	s.Require().NoError(err)
 	var blockInfoRes tmservice.GetBlockByHeightResponse
-	s.Require().NoError(val.ClientCtx.JSONCodec.UnmarshalJSON(restRes, &blockInfoRes))
+	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(restRes, &blockInfoRes))
 }
 
 func (s IntegrationTestSuite) TestQueryLatestValidatorSet() {
@@ -124,7 +124,7 @@ func (s IntegrationTestSuite) TestQueryLatestValidatorSet() {
 	restRes, err := rest.GetRequest(fmt.Sprintf("%s/cosmos/base/tendermint/v1beta1/validatorsets/latest?pagination.offset=%d&pagination.limit=%d", val.APIAddress, 0, 1))
 	s.Require().NoError(err)
 	var validatorSetRes tmservice.GetLatestValidatorSetResponse
-	s.Require().NoError(val.ClientCtx.JSONCodec.UnmarshalJSON(restRes, &validatorSetRes))
+	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(restRes, &validatorSetRes))
 	s.Require().Equal(1, len(validatorSetRes.Validators))
 	anyPub, err := codectypes.NewAnyWithValue(val.PubKey)
 	s.Require().NoError(err)
@@ -183,7 +183,7 @@ func (s IntegrationTestSuite) TestLatestValidatorSet_GRPCGateway() {
 				s.Require().Contains(string(res), tc.expErrMsg)
 			} else {
 				var result tmservice.GetLatestValidatorSetResponse
-				err = vals[0].ClientCtx.JSONCodec.UnmarshalJSON(res, &result)
+				err = vals[0].ClientCtx.Codec.UnmarshalJSON(res, &result)
 				s.Require().NoError(err)
 				s.Require().Equal(uint64(len(vals)), result.Pagination.Total)
 				anyPub, err := codectypes.NewAnyWithValue(vals[0].PubKey)
@@ -245,7 +245,7 @@ func (s IntegrationTestSuite) TestValidatorSetByHeight_GRPCGateway() {
 				s.Require().Contains(string(res), tc.expErrMsg)
 			} else {
 				var result tmservice.GetValidatorSetByHeightResponse
-				err = vals[0].ClientCtx.JSONCodec.UnmarshalJSON(res, &result)
+				err = vals[0].ClientCtx.Codec.UnmarshalJSON(res, &result)
 				s.Require().NoError(err)
 				s.Require().Equal(uint64(len(vals)), result.Pagination.Total)
 			}

client/keys/add.go

@@ -172,7 +172,7 @@ func RunAddCmd(ctx client.Context, cmd *cobra.Command, args []string, inBuf *buf
 	pubKey, _ := cmd.Flags().GetString(FlagPublicKey)
 	if pubKey != "" {
 		var pk cryptotypes.PubKey
-		err = ctx.JSONCodec.UnmarshalInterfaceJSON([]byte(pubKey), &pk)
+		err = ctx.Codec.UnmarshalInterfaceJSON([]byte(pubKey), &pk)
 		if err != nil {
 			return err
 		}

docs/architecture/adr-020-protobuf-transaction-encoding.md

@@ -13,7 +13,8 @@
 - 2020 September 25: Remove `PublicKey` type in favor of `secp256k1.PubKey`, `ed25519.PubKey` and `multisig.LegacyAminoPubKey`.
 - 2020 October 15: Add `GetAccount` and `GetAccountWithHeight` methods to the `AccountRetriever` interface.
 - 2021 Feb 24: The SDK does not use Tendermint's `PubKey` interface anymore, but its own `cryptotypes.PubKey`. Updates to reflect this.
-- 2021 May 3: Rename `clientCtx.JSONMarshaler` to `clientCtx.JSONCodec`
+- 2021 May 3: Rename `clientCtx.JSONMarshaler` to `clientCtx.JSONCodec`.
+- 2021 June 10: Add `clientCtx.Codec: codec.Codec`.
 
 ## Status
 
@@ -344,7 +345,7 @@ type TxBuilder interface {
 }
 ```
 
-We then update `Context` to have new fields: `JSONCodec`, `TxGenerator`,
+We then update `Context` to have new fields: `Codec`, `TxGenerator`,
 and `AccountRetriever`, and we update `AppModuleBasic.GetTxCmd` to take
 a `Context` which should have all of these fields pre-populated.
 

docs/migrations/app_and_modules.md

@@ -146,18 +146,18 @@ clientCtx, err := client.GetClientTxContext(cmd)
 
 Some other flags helper functions are transformed: `flags.PostCommands(cmds ...*cobra.Command) []*cobra.Command` and `flags.GetCommands(...)` usage is now replaced by `flags.AddTxFlagsToCmd(cmd *cobra.Command)` and `flags.AddQueryFlagsToCmd(cmd *cobra.Command)` respectively.
 
-Moreover, new CLI commands don't take any codec as input anymore. Instead, the `clientCtx` can be retrieved from the `cmd` itself using the `GetClient{Query,Tx}Context` function above, and the codec as `clientCtx.JSONCodec`.
+Moreover, new CLI commands don't take any codec as input anymore. Instead, the `clientCtx` can be retrieved from the `cmd` itself using the `GetClient{Query,Tx}Context` function above, and the codec as `clientCtx.Codec`.
 
 ```diff
 // v0.39
 - func SendTxCmd(cdc *codec.Codec) *cobra.Command {
 - 	cdc.MarshalJSON(...)
 - }
 
-// v0.40
+// v0.43
 + func NewSendTxCmd() *cobra.Command {
 +	clientCtx, err := client.GetClientTxContext(cmd)
-+	clientCtx.JSONCodec.MarshalJSON(...)
++	clientCtx.Codec.MarshalJSON(...)
 +}
 ```
 

server/export_test.go

@@ -135,7 +135,7 @@ func setupApp(t *testing.T, tempDir string) (*simapp.SimApp, context.Context, *t
 	serverCtx := server.NewDefaultContext()
 	serverCtx.Config.RootDir = tempDir
 
-	clientCtx := client.Context{}.WithJSONCodec(app.AppCodec())
+	clientCtx := client.Context{}.WithCodec(app.AppCodec())
 	genDoc := newDefaultGenesisDoc(encCfg.Marshaler)
 
 	require.NoError(t, saveGenesisFile(genDoc, serverCtx.Config.GenesisFile()))

server/start.go

@@ -347,7 +347,7 @@ func startInProcess(ctx *Context, clientCtx client.Context, appCreator types.App
 			Retries:       config.Rosetta.Retries,
 			Offline:       offlineMode,
 		}
-		conf.WithCodec(clientCtx.InterfaceRegistry, clientCtx.JSONCodec.(*codec.ProtoCodec))
+		conf.WithCodec(clientCtx.InterfaceRegistry, clientCtx.Codec.(*codec.ProtoCodec))
 
 		rosettaSrv, err = rosetta.ServerFromConfig(conf)
 		if err != nil {

server/tm_cmds.go

@@ -55,7 +55,7 @@ func ShowValidatorCmd() *cobra.Command {
 				return err
 			}
 			clientCtx := client.GetClientContextFromCmd(cmd)
-			bz, err := clientCtx.JSONCodec.MarshalInterfaceJSON(sdkPK)
+			bz, err := clientCtx.Codec.MarshalInterfaceJSON(sdkPK)
 			if err != nil {
 				return err
 			}

simapp/params/encoding.go

@@ -10,7 +10,8 @@ import (
 // This is provided for compatibility between protobuf and amino implementations.
 type EncodingConfig struct {
 	InterfaceRegistry types.InterfaceRegistry
-	Marshaler         codec.Codec
-	TxConfig          client.TxConfig
-	Amino             *codec.LegacyAmino
+	// NOTE: this field will be renamed to Codec
+	Marshaler codec.Codec
+	TxConfig  client.TxConfig
+	Amino     *codec.LegacyAmino
 }

simapp/simd/cmd/genaccounts.go

@@ -40,7 +40,7 @@ contain valid denominations. Accounts may optionally be supplied with vesting pa
 		Args: cobra.ExactArgs(2),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			clientCtx := client.GetClientContextFromCmd(cmd)
-			depCdc := clientCtx.JSONCodec
+			depCdc := clientCtx.Codec
 			cdc := depCdc.(codec.Codec)
 
 			serverCtx := server.GetServerContextFromCmd(cmd)

simapp/simd/cmd/genaccounts_test.go

@@ -63,7 +63,7 @@ func TestAddGenesisAccountCmd(t *testing.T) {
 			require.NoError(t, err)
 
 			serverCtx := server.NewContext(viper.New(), cfg, logger)
-			clientCtx := client.Context{}.WithJSONCodec(appCodec).WithHomeDir(home)
+			clientCtx := client.Context{}.WithCodec(appCodec).WithHomeDir(home)
 
 			ctx := context.Background()
 			ctx = context.WithValue(ctx, client.ClientContextKey, &clientCtx)

simapp/simd/cmd/root.go

@@ -39,7 +39,7 @@ import (
 func NewRootCmd() (*cobra.Command, params.EncodingConfig) {
 	encodingConfig := simapp.MakeTestEncodingConfig()
 	initClientCtx := client.Context{}.
-		WithJSONCodec(encodingConfig.Marshaler).
+		WithCodec(encodingConfig.Marshaler).
 		WithInterfaceRegistry(encodingConfig.InterfaceRegistry).
 		WithTxConfig(encodingConfig.TxConfig).
 		WithLegacyAmino(encodingConfig.Amino).

simapp/simd/cmd/testnet.go

@@ -271,26 +271,26 @@ func initGenFiles(
 	genFiles []string, numValidators int,
 ) error {
 
-	appGenState := mbm.DefaultGenesis(clientCtx.JSONCodec)
+	appGenState := mbm.DefaultGenesis(clientCtx.Codec)
 
 	// set the accounts in the genesis state
 	var authGenState authtypes.GenesisState
-	clientCtx.JSONCodec.MustUnmarshalJSON(appGenState[authtypes.ModuleName], &authGenState)
+	clientCtx.Codec.MustUnmarshalJSON(appGenState[authtypes.ModuleName], &authGenState)
 
 	accounts, err := authtypes.PackAccounts(genAccounts)
 	if err != nil {
 		return err
 	}
 
 	authGenState.Accounts = accounts
-	appGenState[authtypes.ModuleName] = clientCtx.JSONCodec.MustMarshalJSON(&authGenState)
+	appGenState[authtypes.ModuleName] = clientCtx.Codec.MustMarshalJSON(&authGenState)
 
 	// set the balances in the genesis state
 	var bankGenState banktypes.GenesisState
-	clientCtx.JSONCodec.MustUnmarshalJSON(appGenState[banktypes.ModuleName], &bankGenState)
+	clientCtx.Codec.MustUnmarshalJSON(appGenState[banktypes.ModuleName], &bankGenState)
 
 	bankGenState.Balances = genBalances
-	appGenState[banktypes.ModuleName] = clientCtx.JSONCodec.MustMarshalJSON(&bankGenState)
+	appGenState[banktypes.ModuleName] = clientCtx.Codec.MustMarshalJSON(&bankGenState)
 
 	appGenStateJSON, err := json.MarshalIndent(appGenState, "", "  ")
 	if err != nil {
@@ -337,7 +337,7 @@ func collectGenFiles(
 			return err
 		}
 
-		nodeAppState, err := genutil.GenAppStateFromConfig(clientCtx.JSONCodec, clientCtx.TxConfig, nodeConfig, initCfg, *genDoc, genBalIterator)
+		nodeAppState, err := genutil.GenAppStateFromConfig(clientCtx.Codec, clientCtx.TxConfig, nodeConfig, initCfg, *genDoc, genBalIterator)
 		if err != nil {
 			return err
 		}

testutil/network/network.go

@@ -346,7 +346,7 @@ func New(t *testing.T, cfg Config) *Network {
 			WithHomeDir(tmCfg.RootDir).
 			WithChainID(cfg.ChainID).
 			WithInterfaceRegistry(cfg.InterfaceRegistry).
-			WithJSONCodec(cfg.Codec).
+			WithCodec(cfg.Codec).
 			WithLegacyAmino(cfg.LegacyAmino).
 			WithTxConfig(cfg.TxConfig).
 			WithAccountRetriever(cfg.AccountRetriever)

x/auth/client/cli/encode_test.go

@@ -39,7 +39,7 @@ func TestGetCommandEncode(t *testing.T) {
 	ctx := context.Background()
 	clientCtx := client.Context{}.
 		WithTxConfig(encodingConfig.TxConfig).
-		WithJSONCodec(encodingConfig.Marshaler)
+		WithCodec(encodingConfig.Marshaler)
 	ctx = context.WithValue(ctx, client.ClientContextKey, &clientCtx)
 
 	cmd.SetArgs([]string{txFileName})
@@ -52,7 +52,7 @@ func TestGetCommandDecode(t *testing.T) {
 
 	clientCtx := client.Context{}.
 		WithTxConfig(encodingConfig.TxConfig).
-		WithJSONCodec(encodingConfig.Marshaler)
+		WithCodec(encodingConfig.Marshaler)
 
 	cmd := GetDecodeCommand()
 	_ = testutil.ApplyMockIODiscardOutErr(cmd)

x/auth/client/rest/rest_test.go

@@ -258,7 +258,7 @@ func (s *IntegrationTestSuite) TestQueryTx() {
 
 	s.Require().NoError(err)
 	var txRes sdk.TxResponse
-	s.Require().NoError(val.ClientCtx.JSONCodec.UnmarshalJSON(out.Bytes(), &txRes))
+	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(out.Bytes(), &txRes))
 	s.Require().Equal(uint32(0), txRes.Code)
 
 	s.Require().NoError(s.network.WaitForNextBlock())
@@ -411,7 +411,7 @@ func (s *IntegrationTestSuite) testQueryIBCTx(txRes sdk.TxResponse, cmd *cobra.C
 	s.Require().NoError(err)
 
 	var getTxRes txtypes.GetTxResponse
-	s.Require().NoError(val.ClientCtx.JSONCodec.UnmarshalJSON(grpcJSON, &getTxRes))
+	s.Require().NoError(val.ClientCtx.Codec.UnmarshalJSON(grpcJSON, &getTxRes))
 	s.Require().Equal(getTxRes.Tx.Body.Memo, "foobar")
 
 	// generate broadcast only txn.
@@ -522,7 +522,7 @@ func (s *IntegrationTestSuite) TestLegacyMultisig() {
 	s.Require().NoError(s.network.WaitForNextBlock())
 
 	var txRes sdk.TxResponse
-	err = val1.ClientCtx.JSONCodec.UnmarshalJSON(out.Bytes(), &txRes)
+	err = val1.ClientCtx.Codec.UnmarshalJSON(out.Bytes(), &txRes)
 	s.Require().NoError(err)
 	s.Require().Equal(uint32(0), txRes.Code)