gpu-compute-chain/x/cosmostest/keeper/msg_server_new_auction.go

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package keeper
import (
"context"
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"errors"
"fmt"
"math/big"
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"strconv"
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"cosmos-test/x/cosmostest/auctionconfig"
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"cosmos-test/x/cosmostest/types"
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sdk "github.com/cosmos/cosmos-sdk/types"
)
func (k msgServer) NewAuction(goCtx context.Context, msg *types.MsgNewAuction) (*types.MsgNewAuctionResponse, error) {
ctx := sdk.UnwrapSDKContext(goCtx)
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next, found := k.Keeper.GetNextAuction(ctx)
if !found {
return nil, errors.New("Auction not found")
}
index := strconv.FormatUint(next.AuctionId, 10)
auction := types.Auction{
Index: index,
Name: msg.Name,
Description: msg.Description,
// Best: new(types.Bid),
Deadline: uint64(ctx.BlockHeight()) + auctionconfig.AuctionTime,
Denom: msg.Denom,
Owner: msg.Creator,
Ceiling: msg.Ceiling,
}
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senderAddr, err := sdk.AccAddressFromBech32(msg.Creator)
if err != nil {
return nil, fmt.Errorf("sender address `%s` format invalid (bech32 required)", msg.Creator)
}
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spendable := k.bank.SpendableCoins(ctx, senderAddr)
// if balance does not exceed or equal proposed auction ceiling...
ceiling := new(big.Int)
ceiling.SetString(auction.Ceiling, 10)
if spendable.AmountOf(auction.Denom).BigInt().Cmp(ceiling) == -1 {
return nil, fmt.Errorf("not enough balance to set ceiling %s%s", msg.Ceiling, auction.Denom)
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}
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coins := sdk.NewCoins(sdk.Coin{
Amount: spendable.AmountOf(auction.Ceiling),
Denom: auction.Denom,
})
if err := k.bank.SendCoinsFromAccountToModule(ctx, senderAddr, "cosmostest", coins); err != nil {
return nil, fmt.Errorf("failed to transfer %s%s", auction.Ceiling, auction.Denom)
}
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k.Keeper.SetAuction(ctx, auction)
next.AuctionId++
k.Keeper.SetNextAuction(ctx, types.NextAuction{AuctionId: next.AuctionId})
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return &types.MsgNewAuctionResponse{
AuctionId: strconv.FormatUint(next.AuctionId, 10),
}, nil
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}