cosmos-sdk/modules/base/multiplexer.go

package base

// import (
// 	"strings"

// 	wire "github.com/tendermint/go-wire"
// 	"github.com/tendermint/go-wire/data"

// 	"github.com/tendermint/basecoin"
// 	"github.com/tendermint/basecoin/stack"
// 	"github.com/tendermint/basecoin/state"
// )

// //nolint
// const (
// 	NameMultiplexer = "mplx"
// )

// // Multiplexer grabs a MultiTx and sends them sequentially down the line
// type Multiplexer struct {
// 	stack.PassInitState
// }

// // Name of the module - fulfills Middleware interface
// func (Multiplexer) Name() string {
// 	return NameMultiplexer
// }

// var _ stack.Middleware = Multiplexer{}

// // CheckTx splits the input tx and checks them all - fulfills Middlware interface
// func (Multiplexer) CheckTx(ctx basecoin.Context, store state.SimpleDB, tx basecoin.Tx, next basecoin.Checker) (res basecoin.CheckResult, err error) {
// 	if mtx, ok := tx.Unwrap().(*MultiTx); ok {
// 		return runAll(ctx, store, mtx.Txs, next.CheckTx)
// 	}
// 	return next.CheckTx(ctx, store, tx)
// }

// // DeliverTx splits the input tx and checks them all - fulfills Middlware interface
// func (Multiplexer) DeliverTx(ctx basecoin.Context, store state.SimpleDB, tx basecoin.Tx, next basecoin.Deliver) (res basecoin.DeliverResult, err error) {
// 	if mtx, ok := tx.Unwrap().(*MultiTx); ok {
// 		return runAll(ctx, store, mtx.Txs, next.DeliverTx)
// 	}
// 	return next.DeliverTx(ctx, store, tx)
// }

// func runAll(ctx basecoin.Context, store state.SimpleDB, txs []basecoin.Tx, next basecoin.CheckerFunc) (res basecoin.Result, err error) {
// 	// store all results, unless anything errors
// 	rs := make([]basecoin.Result, len(txs))
// 	for i, stx := range txs {
// 		rs[i], err = next(ctx, store, stx)
// 		if err != nil {
// 			return
// 		}
// 	}
// 	// now combine the results into one...
// 	return combine(rs), nil
// }

// // combines all data bytes as a go-wire array.
// // joins all log messages with \n
// func combine(all []basecoin.Result) basecoin.Result {
// 	datas := make([]data.Bytes, len(all))
// 	logs := make([]string, len(all))
// 	for i, r := range all {
// 		datas[i] = r.Data
// 		logs[i] = r.Log
// 	}
// 	return basecoin.Result{
// 		Data: wire.BinaryBytes(datas),
// 		Log:  strings.Join(logs, "\n"),
// 	}
// }