74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
package base
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import (
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"strings"
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wire "github.com/tendermint/go-wire"
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"github.com/tendermint/go-wire/data"
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"github.com/tendermint/basecoin"
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"github.com/tendermint/basecoin/stack"
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"github.com/tendermint/basecoin/state"
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)
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//nolint
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const (
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NameMultiplexer = "mplx"
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)
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// Multiplexer grabs a MultiTx and sends them sequentially down the line
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type Multiplexer struct {
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stack.PassOption
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}
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// Name of the module - fulfills Middleware interface
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func (Multiplexer) Name() string {
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return NameMultiplexer
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}
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var _ stack.Middleware = Multiplexer{}
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// CheckTx splits the input tx and checks them all - fulfills Middlware interface
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func (Multiplexer) CheckTx(ctx basecoin.Context, store state.SimpleDB, tx basecoin.Tx, next basecoin.Checker) (res basecoin.Result, err error) {
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if mtx, ok := tx.Unwrap().(*MultiTx); ok {
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return runAll(ctx, store, mtx.Txs, next.CheckTx)
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}
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return next.CheckTx(ctx, store, tx)
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}
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// DeliverTx splits the input tx and checks them all - fulfills Middlware interface
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func (Multiplexer) DeliverTx(ctx basecoin.Context, store state.SimpleDB, tx basecoin.Tx, next basecoin.Deliver) (res basecoin.Result, err error) {
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if mtx, ok := tx.Unwrap().(*MultiTx); ok {
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return runAll(ctx, store, mtx.Txs, next.DeliverTx)
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}
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return next.DeliverTx(ctx, store, tx)
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}
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func runAll(ctx basecoin.Context, store state.SimpleDB, txs []basecoin.Tx, next basecoin.CheckerFunc) (res basecoin.Result, err error) {
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// store all results, unless anything errors
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rs := make([]basecoin.Result, len(txs))
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for i, stx := range txs {
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rs[i], err = next(ctx, store, stx)
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if err != nil {
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return
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}
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}
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// now combine the results into one...
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return combine(rs), nil
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}
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// combines all data bytes as a go-wire array.
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// joins all log messages with \n
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func combine(all []basecoin.Result) basecoin.Result {
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datas := make([]data.Bytes, len(all))
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logs := make([]string, len(all))
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for i, r := range all {
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datas[i] = r.Data
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logs[i] = r.Log
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}
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return basecoin.Result{
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Data: wire.BinaryBytes(datas),
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Log: strings.Join(logs, "\n"),
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}
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}
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