37 lines
1.0 KiB
Go
37 lines
1.0 KiB
Go
package mev
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import (
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"errors"
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sdk "github.com/cosmos/cosmos-sdk/types"
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auctiontypes "github.com/skip-mev/block-sdk/x/auction/types"
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)
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// GetMsgAuctionBidFromTx attempts to retrieve a MsgAuctionBid from an sdk.Tx if
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// one exists. If a MsgAuctionBid does exist and other messages are also present,
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// an error is returned. If no MsgAuctionBid is present, <nil, nil> is returned.
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func GetMsgAuctionBidFromTx(tx sdk.Tx) (*auctiontypes.MsgAuctionBid, error) {
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auctionBidMsgs := make([]*auctiontypes.MsgAuctionBid, 0)
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for _, msg := range tx.GetMsgs() {
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t, ok := msg.(*auctiontypes.MsgAuctionBid)
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if ok {
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auctionBidMsgs = append(auctionBidMsgs, t)
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}
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}
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switch {
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case len(auctionBidMsgs) == 0:
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// a normal transaction without a MsgAuctionBid message
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return nil, nil
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case len(auctionBidMsgs) == 1 && len(tx.GetMsgs()) == 1:
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// a single MsgAuctionBid message transaction
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return auctionBidMsgs[0], nil
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default:
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// a transaction with at at least one MsgAuctionBid message
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return nil, errors.New("invalid MsgAuctionBid transaction")
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}
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}
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