cosmos-sdk/client/tx_generator.go

package client

import (
	sdk "github.com/cosmos/cosmos-sdk/types"
	signingtypes "github.com/cosmos/cosmos-sdk/types/tx/signing"
	"github.com/cosmos/cosmos-sdk/x/auth/signing"
)

type (
	// TxGenerator defines an interface a client can utilize to generate an
	// application-defined concrete transaction type. The type returned must
	// implement TxBuilder.
	TxGenerator interface {
		NewTxBuilder() TxBuilder
		SignModeHandler() signing.SignModeHandler

		TxEncoder() sdk.TxEncoder
		TxDecoder() sdk.TxDecoder
		TxJSONEncoder() sdk.TxEncoder
		TxJSONDecoder() sdk.TxDecoder
	}

	// TxBuilder defines an interface which an application-defined concrete transaction
	// type must implement. Namely, it must be able to set messages, generate
	// signatures, and provide canonical bytes to sign over. The transaction must
	// also know how to encode itself.
	TxBuilder interface {
		GetTx() signing.SigFeeMemoTx

		SetMsgs(msgs ...sdk.Msg) error
		SetSignatures(signatures ...signingtypes.SignatureV2) error
		SetMemo(memo string)
		SetFeeAmount(amount sdk.Coins)
		SetGasLimit(limit uint64)
	}
)