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feat(genesis bridge): genesis transfers (#449)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| package keeper | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "time" | ||
|
|
||
| errorsmod "cosmossdk.io/errors" | ||
|
|
||
| sdk "github.com/cosmos/cosmos-sdk/types" | ||
| banktypes "github.com/cosmos/cosmos-sdk/x/bank/types" | ||
| transfertypes "github.com/cosmos/ibc-go/v6/modules/apps/transfer/types" | ||
| clienttypes "github.com/cosmos/ibc-go/v6/modules/core/02-client/types" | ||
| porttypes "github.com/cosmos/ibc-go/v6/modules/core/05-port/types" | ||
| "github.com/dymensionxyz/dymension-rdk/x/hub-genesis/types" | ||
| ) | ||
|
|
||
| const ( | ||
| transferTimeout = time.Hour * 24 * 365 | ||
| ) | ||
|
|
||
| type IBCModule struct { | ||
| porttypes.IBCModule | ||
| k Keeper | ||
| transfer Transfer | ||
| getDenom GetDenomMetaData | ||
| mintCoins MintCoins | ||
| } | ||
|
|
||
| type ( | ||
| Transfer func(ctx sdk.Context, transfer *transfertypes.MsgTransfer) error | ||
| GetDenomMetaData func(ctx sdk.Context, denom string) (banktypes.Metadata, bool) | ||
| MintCoins func(ctx sdk.Context, moduleName string, amt sdk.Coins) error | ||
| ) | ||
|
|
||
| func NewIBCModule(next porttypes.IBCModule, t Transfer, k Keeper, d GetDenomMetaData, m MintCoins) *IBCModule { | ||
| return &IBCModule{next, k, t, d, m} | ||
| } | ||
|
|
||
| // OnChanOpenConfirm will send any unsent genesis account transfers over the channel. | ||
| // It is ASSUMED that the channel is for the Hub. This can be ensured by not exposing | ||
| // the sequencer API until after genesis is complete. | ||
| // Since transfers are only sent once, it does not matter if someone else tries to open | ||
| // a channel in future (it will no-op). | ||
| func (w IBCModule) OnChanOpenConfirm( | ||
| ctx sdk.Context, | ||
| portID, | ||
| channelID string, | ||
| ) error { | ||
| l := ctx.Logger().With("module", "hubgenesis OnChanOpenConfirm middleware", "port id", portID, "channelID", channelID) | ||
|
|
||
| err := w.IBCModule.OnChanOpenConfirm(ctx, portID, channelID) | ||
| if err != nil { | ||
| l.Error("Next middleware.", "err", err) | ||
| return err | ||
| } | ||
|
|
||
| state := w.k.GetState(ctx) | ||
|
|
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| srcAccount := w.k.accountKeeper.GetModuleAccount(ctx, types.ModuleName) | ||
| srcAddr := srcAccount.GetAddress().String() | ||
|
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| for i, a := range state.GetGenesisAccounts() { | ||
| if err := w.mintAndTransfer(ctx, len(state.GetGenesisAccounts()), a, srcAddr, portID, channelID); err != nil { | ||
| // there is no feasible way to recover | ||
| panic(fmt.Errorf("mint and transfer: %w", err)) | ||
| } | ||
| l.Info("Sent genesis transfer.", "index", i, "receiver", a.GetAddress(), "coin", a) | ||
| } | ||
|
|
||
| state.GenesisAccounts = nil | ||
|
|
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| w.k.SetState(ctx, state) | ||
|
|
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| l.Info("Sent all genesis transfers.") | ||
|
|
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| return nil | ||
| } | ||
|
|
||
| func (w IBCModule) mintAndTransfer( | ||
| ctx sdk.Context, | ||
| n int, | ||
| a types.GenesisAccount, | ||
| srcAddr string, | ||
| portID string, | ||
| channelID string, | ||
| ) error { | ||
| coin := a.GetAmount() | ||
| err := w.mintCoins(ctx, types.ModuleName, sdk.Coins{coin}) | ||
| if err != nil { | ||
| return errorsmod.Wrap(err, "mint coins") | ||
| } | ||
|
|
||
| // NOTE: for simplicity we don't optimize to avoid sending duplicate metadata | ||
| // we assume the hub will deduplicate. We expect to eventually get a timeout | ||
| // or commit anyway, so the packet will be cleared up. | ||
| // (Actually, since transfers may arrive out of order, we must include the | ||
| // denom metadata anyway). | ||
| memo, err := w.createMemo(ctx, a.Amount.Denom, n) | ||
| if err != nil { | ||
| return errorsmod.Wrap(err, "create memo") | ||
| } | ||
|
|
||
| m := transfertypes.MsgTransfer{ | ||
| SourcePort: portID, | ||
| SourceChannel: channelID, | ||
| Token: a.Amount, | ||
| Sender: srcAddr, | ||
| Receiver: a.GetAddress(), | ||
| TimeoutHeight: clienttypes.Height{}, | ||
| TimeoutTimestamp: uint64(ctx.BlockTime().Add(transferTimeout).UnixNano()), | ||
| Memo: memo, | ||
| } | ||
|
|
||
| err = w.transfer(skipContext(ctx), &m) | ||
| if err != nil { | ||
| return errorsmod.Wrap(err, "transfer") | ||
| } | ||
|
|
||
| return nil | ||
| } |
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