Proto Client Migration: x/bank

CHANGELOG.md

@@ -54,6 +54,7 @@ older clients.
 
 ### API Breaking Changes
 
+* (baseapp) [\#5865](https://github.com/cosmos/cosmos-sdk/pull/5865) The `SimulationResponse` returned from tx simulation is now JSON encoded instead of Amino binary.
 * [\#5719](https://github.com/cosmos/cosmos-sdk/pull/5719) Bump Go requirement to 1.14+
 * (x/params) [\#5619](https://github.com/cosmos/cosmos-sdk/pull/5619) The `x/params` keeper now accepts a `codec.Marshaller` instead of
 a reference to an amino codec. Amino is still used for JSON serialization.

baseapp/abci.go

@@ -1,6 +1,7 @@
 package baseapp
 
 import (
+	"encoding/json"
 	"fmt"
 	"os"
 	"sort"
@@ -9,7 +10,6 @@ import (
 
 	abci "github.com/tendermint/tendermint/abci/types"
 
-	"github.com/cosmos/cosmos-sdk/codec"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
 )
@@ -336,10 +336,15 @@ func handleQueryApp(app *BaseApp, path []string, req abci.RequestQuery) abci.Res
 				Result:  res,
 			}
 
+			bz, err := json.Marshal(simRes)
+			if err != nil {
+				return sdkerrors.QueryResult(sdkerrors.Wrap(err, "failed to JSON encode simulation response"))
+			}
+
 			return abci.ResponseQuery{
 				Codespace: sdkerrors.RootCodespace,
 				Height:    req.Height,
-				Value:     codec.Cdc.MustMarshalBinaryBare(simRes),
+				Value:     bz,
 			}
 
 		case "version":

baseapp/baseapp_test.go

@@ -3,6 +3,7 @@ package baseapp
 import (
 	"bytes"
 	"encoding/binary"
+	"encoding/json"
 	"fmt"
 	"os"
 	"sync"
@@ -936,12 +937,13 @@ func TestSimulateTx(t *testing.T) {
 		require.True(t, queryResult.IsOK(), queryResult.Log)
 
 		var simRes sdk.SimulationResponse
-		err = codec.Cdc.UnmarshalBinaryBare(queryResult.Value, &simRes)
-		require.NoError(t, err)
+		require.NoError(t, json.Unmarshal(queryResult.Value, &simRes))
+
 		require.Equal(t, gInfo, simRes.GasInfo)
 		require.Equal(t, result.Log, simRes.Result.Log)
 		require.Equal(t, result.Events, simRes.Result.Events)
 		require.True(t, bytes.Equal(result.Data, simRes.Result.Data))
+
 		app.EndBlock(abci.RequestEndBlock{})
 		app.Commit()
 	}

client/context/context.go

@@ -7,14 +7,12 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/spf13/viper"
-	yaml "gopkg.in/yaml.v2"
-
 	"github.com/tendermint/tendermint/libs/cli"
 	tmlite "github.com/tendermint/tendermint/lite"
 	rpcclient "github.com/tendermint/tendermint/rpc/client"
+	yaml "gopkg.in/yaml.v2"
 
 	"github.com/cosmos/cosmos-sdk/client/flags"
-	clientx "github.com/cosmos/cosmos-sdk/client/tx"
 	"github.com/cosmos/cosmos-sdk/codec"
 	"github.com/cosmos/cosmos-sdk/crypto/keyring"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -26,7 +24,6 @@ type CLIContext struct {
 	FromAddress   sdk.AccAddress
 	Client        rpcclient.Client
 	ChainID       string
-	TxGenerator   clientx.Generator
 	Marshaler     codec.Marshaler
 	Keybase       keyring.Keybase
 	Input         io.Reader
@@ -138,12 +135,6 @@ func (ctx CLIContext) WithInput(r io.Reader) CLIContext {
 	return ctx
 }
 
-// WithTxGenerator returns a copy of the CLIContext with an updated TxGenerator.
-func (ctx CLIContext) WithTxGenerator(txg clientx.Generator) CLIContext {
-	ctx.TxGenerator = txg
-	return ctx
-}
-
 // WithMarshaler returns a copy of the CLIContext with an updated Marshaler.
 func (ctx CLIContext) WithMarshaler(m codec.Marshaler) CLIContext {
 	ctx.Marshaler = m
@@ -249,9 +240,44 @@ func (ctx CLIContext) WithBroadcastMode(mode string) CLIContext {
 	return ctx
 }
 
+// Println 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.Marshaler. An error is returned upon failure.
+func (ctx CLIContext) Println(toPrint interface{}) error {
+	var (
+		out []byte
+		err error
+	)
+
+	switch ctx.OutputFormat {
+	case "text":
+		out, err = yaml.Marshal(&toPrint)
+
+	case "json":
+		out, err = ctx.Marshaler.MarshalJSON(toPrint)
+
+		// To JSON indent, we re-encode the already encoded JSON given there is no
+		// error. The re-encoded JSON uses the standard library as the initial encoded
+		// JSON should have the correct output produced by ctx.Marshaler.
+		if ctx.Indent && err == nil {
+			out, err = sdk.MarshalIndentFromJSON(out)
+		}
+	}
+
+	if err != nil {
+		return err
+	}
+
+	_, err = fmt.Fprintf(ctx.Output, "%s\n", out)
+	return err
+}
+
 // PrintOutput prints output while respecting output and indent flags
 // NOTE: pass in marshalled structs that have been unmarshaled
-// because this function will panic on marshaling errors
+// because this function will panic on marshaling errors.
+//
+// TODO: Remove once client-side Protobuf migration has been completed.
+// ref: https://github.com/cosmos/cosmos-sdk/issues/5864
 func (ctx CLIContext) PrintOutput(toPrint interface{}) error {
 	var (
 		out []byte

client/tx/factory.go

@@ -0,0 +1,163 @@
+package tx
+
+import (
+	"io"
+
+	"github.com/spf13/viper"
+
+	"github.com/cosmos/cosmos-sdk/client/flags"
+	"github.com/cosmos/cosmos-sdk/crypto/keyring"
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// AccountRetriever defines the interfaces required for use by the Factory to
+// ensure an account exists and to be able to query for account fields necessary
+// for signing.
+type AccountRetriever interface {
+	EnsureExists(addr sdk.AccAddress) error
+	GetAccountNumberSequence(addr sdk.AccAddress) (uint64, uint64, error)
+}
+
+// Factory defines a client transaction factory that facilitates generating and
+// signing an application-specific transaction.
+type Factory struct {
+	keybase            keyring.Keybase
+	txGenerator        Generator
+	accountRetriever   AccountRetriever
+	accountNumber      uint64
+	sequence           uint64
+	gas                uint64
+	gasAdjustment      float64
+	simulateAndExecute bool
+	chainID            string
+	memo               string
+	fees               sdk.Coins
+	gasPrices          sdk.DecCoins
+}
+
+func NewFactoryFromCLI(input io.Reader) Factory {
+	kb, err := keyring.NewKeyring(
+		sdk.KeyringServiceName(),
+		viper.GetString(flags.FlagKeyringBackend),
+		viper.GetString(flags.FlagHome),
+		input,
+	)
+	if err != nil {
+		panic(err)
+	}
+
+	f := Factory{
+		keybase:            kb,
+		accountNumber:      viper.GetUint64(flags.FlagAccountNumber),
+		sequence:           viper.GetUint64(flags.FlagSequence),
+		gas:                flags.GasFlagVar.Gas,
+		gasAdjustment:      viper.GetFloat64(flags.FlagGasAdjustment),
+		simulateAndExecute: flags.GasFlagVar.Simulate,
+		chainID:            viper.GetString(flags.FlagChainID),
+		memo:               viper.GetString(flags.FlagMemo),
+	}
+
+	f = f.WithFees(viper.GetString(flags.FlagFees))
+	f = f.WithGasPrices(viper.GetString(flags.FlagGasPrices))
+
+	return f
+}
+
+// nolint
+func (f Factory) AccountNumber() uint64              { return f.accountNumber }
+func (f Factory) Sequence() uint64                   { return f.sequence }
+func (f Factory) Gas() uint64                        { return f.gas }
+func (f Factory) GasAdjustment() float64             { return f.gasAdjustment }
+func (f Factory) Keybase() keyring.Keybase           { return f.keybase }
+func (f Factory) ChainID() string                    { return f.chainID }
+func (f Factory) Memo() string                       { return f.memo }
+func (f Factory) Fees() sdk.Coins                    { return f.fees }
+func (f Factory) GasPrices() sdk.DecCoins            { return f.gasPrices }
+func (f Factory) AccountRetriever() AccountRetriever { return f.accountRetriever }
+
+// SimulateAndExecute returns the option to simulate and then execute the transaction
+// using the gas from the simulation results
+func (f Factory) SimulateAndExecute() bool { return f.simulateAndExecute }
+
+// WithTxGenerator returns a copy of the Factory with an updated Generator.
+func (f Factory) WithTxGenerator(g Generator) Factory {
+	f.txGenerator = g
+	return f
+}
+
+// WithAccountRetriever returns a copy of the Factory with an updated AccountRetriever.
+func (f Factory) WithAccountRetriever(ar AccountRetriever) Factory {
+	f.accountRetriever = ar
+	return f
+}
+
+// WithChainID returns a copy of the Factory with an updated chainID.
+func (f Factory) WithChainID(chainID string) Factory {
+	f.chainID = chainID
+	return f
+}
+
+// WithGas returns a copy of the Factory with an updated gas value.
+func (f Factory) WithGas(gas uint64) Factory {
+	f.gas = gas
+	return f
+}
+
+// WithFees returns a copy of the Factory with an updated fee.
+func (f Factory) WithFees(fees string) Factory {
+	parsedFees, err := sdk.ParseCoins(fees)
+	if err != nil {
+		panic(err)
+	}
+
+	f.fees = parsedFees
+	return f
+}
+
+// WithGasPrices returns a copy of the Factory with updated gas prices.
+func (f Factory) WithGasPrices(gasPrices string) Factory {
+	parsedGasPrices, err := sdk.ParseDecCoins(gasPrices)
+	if err != nil {
+		panic(err)
+	}
+
+	f.gasPrices = parsedGasPrices
+	return f
+}
+
+// WithKeybase returns a copy of the Factory with updated Keybase.
+func (f Factory) WithKeybase(keybase keyring.Keybase) Factory {
+	f.keybase = keybase
+	return f
+}
+
+// WithSequence returns a copy of the Factory with an updated sequence number.
+func (f Factory) WithSequence(sequence uint64) Factory {
+	f.sequence = sequence
+	return f
+}
+
+// WithMemo returns a copy of the Factory with an updated memo.
+func (f Factory) WithMemo(memo string) Factory {
+	f.memo = memo
+	return f
+}
+
+// WithAccountNumber returns a copy of the Factory with an updated account number.
+func (f Factory) WithAccountNumber(accnum uint64) Factory {
+	f.accountNumber = accnum
+	return f
+}
+
+// WithGasAdjustment returns a copy of the Factory with an updated gas adjustment.
+func (f Factory) WithGasAdjustment(gasAdj float64) Factory {
+	f.gasAdjustment = gasAdj
+	return f
+}
+
+// WithSimulateAndExecute returns a copy of the Factory with an updated gas
+// simulation value.
+func (f Factory) WithSimulateAndExecute(sim bool) Factory {
+	f.simulateAndExecute = sim
+	return f
+}