73 lines
1.4 KiB
Go
73 lines
1.4 KiB
Go
package coin
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import (
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"github.com/tendermint/basecoin"
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"github.com/tendermint/basecoin/errors"
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"github.com/tendermint/basecoin/types"
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)
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const (
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NameCoin = "coin"
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)
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// Handler writes
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type Handler struct {
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Accountant
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}
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var _ basecoin.Handler = Handler{}
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func NewHandler() Handler {
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return Handler{
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Accountant: Accountant{Prefix: []byte(NameCoin + "/")},
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}
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}
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func (_ Handler) Name() string {
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return NameCoin
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}
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// CheckTx checks if there is enough money in the account
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func (h Handler) CheckTx(ctx basecoin.Context, store types.KVStore, tx basecoin.Tx) (res basecoin.Result, err error) {
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_, err = checkTx(ctx, tx)
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if err != nil {
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return res, err
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}
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// now make sure there is money
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// otherwise, we are good
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return res, nil
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}
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// DeliverTx moves the money
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func (h Handler) DeliverTx(ctx basecoin.Context, store types.KVStore, tx basecoin.Tx) (res basecoin.Result, err error) {
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_, err = checkTx(ctx, tx)
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if err != nil {
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return res, err
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}
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// now move the money
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return basecoin.Result{}, nil
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}
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func checkTx(ctx basecoin.Context, tx basecoin.Tx) (send SendTx, err error) {
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// check if the tx is proper type and valid
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send, ok := tx.Unwrap().(SendTx)
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if !ok {
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return send, errors.ErrInvalidFormat(tx)
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}
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err = send.ValidateBasic()
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if err != nil {
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return send, err
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}
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// check if all inputs have permission
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for _, in := range send.Inputs {
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if !ctx.HasPermission(in.Address) {
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return send, errors.ErrUnauthorized()
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}
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}
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return send, nil
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}
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