348 lines
10 KiB
Go
348 lines
10 KiB
Go
package transfer
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import (
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"encoding/json"
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"fmt"
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"github.com/gorilla/mux"
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"github.com/spf13/cobra"
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abci "github.com/tendermint/tendermint/abci/types"
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"github.com/cosmos/cosmos-sdk/client/context"
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"github.com/cosmos/cosmos-sdk/codec"
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sdk "github.com/cosmos/cosmos-sdk/types"
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sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/cosmos/cosmos-sdk/types/module"
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"github.com/cosmos/cosmos-sdk/x/capability"
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channel "github.com/cosmos/cosmos-sdk/x/ibc/04-channel"
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channelexported "github.com/cosmos/cosmos-sdk/x/ibc/04-channel/exported"
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channeltypes "github.com/cosmos/cosmos-sdk/x/ibc/04-channel/types"
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port "github.com/cosmos/cosmos-sdk/x/ibc/05-port"
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porttypes "github.com/cosmos/cosmos-sdk/x/ibc/05-port/types"
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"github.com/cosmos/cosmos-sdk/x/ibc/20-transfer/client/cli"
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"github.com/cosmos/cosmos-sdk/x/ibc/20-transfer/client/rest"
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"github.com/cosmos/cosmos-sdk/x/ibc/20-transfer/types"
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ibctypes "github.com/cosmos/cosmos-sdk/x/ibc/types"
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)
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var (
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_ module.AppModule = AppModule{}
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_ port.IBCModule = AppModule{}
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_ module.AppModuleBasic = AppModuleBasic{}
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)
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// AppModuleBasic is the 20-transfer appmodulebasic
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type AppModuleBasic struct{}
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// Name implements AppModuleBasic interface
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func (AppModuleBasic) Name() string {
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return ModuleName
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}
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// RegisterCodec implements AppModuleBasic interface
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func (AppModuleBasic) RegisterCodec(cdc *codec.Codec) {
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RegisterCodec(cdc)
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}
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// DefaultGenesis returns default genesis state as raw bytes for the ibc
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// transfer module.
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func (AppModuleBasic) DefaultGenesis(cdc codec.JSONMarshaler) json.RawMessage {
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return cdc.MustMarshalJSON(types.DefaultGenesis())
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}
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// ValidateGenesis performs genesis state validation for the ibc transfer module.
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func (AppModuleBasic) ValidateGenesis(_ codec.JSONMarshaler, _ json.RawMessage) error {
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return nil
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}
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// RegisterRESTRoutes implements AppModuleBasic interface
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func (AppModuleBasic) RegisterRESTRoutes(ctx context.CLIContext, rtr *mux.Router) {
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rest.RegisterRoutes(ctx, rtr)
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}
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// GetTxCmd implements AppModuleBasic interface
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func (AppModuleBasic) GetTxCmd(cdc *codec.Codec) *cobra.Command {
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return cli.GetTxCmd(cdc)
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}
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// GetQueryCmd implements AppModuleBasic interface
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func (AppModuleBasic) GetQueryCmd(cdc *codec.Codec) *cobra.Command {
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return cli.GetQueryCmd(cdc, QuerierRoute)
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}
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// AppModule represents the AppModule for this module
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type AppModule struct {
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AppModuleBasic
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keeper Keeper
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}
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// NewAppModule creates a new 20-transfer module
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func NewAppModule(k Keeper) AppModule {
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return AppModule{
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keeper: k,
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}
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}
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// RegisterInvariants implements the AppModule interface
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func (AppModule) RegisterInvariants(ir sdk.InvariantRegistry) {
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// TODO
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}
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// Route implements the AppModule interface
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func (AppModule) Route() string {
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return RouterKey
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}
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// NewHandler implements the AppModule interface
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func (am AppModule) NewHandler() sdk.Handler {
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return NewHandler(am.keeper)
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}
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// QuerierRoute implements the AppModule interface
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func (AppModule) QuerierRoute() string {
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return QuerierRoute
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}
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// NewQuerierHandler implements the AppModule interface
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func (am AppModule) NewQuerierHandler() sdk.Querier {
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return nil
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}
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// InitGenesis performs genesis initialization for the ibc transfer module. It returns
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// no validator updates.
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func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONMarshaler, data json.RawMessage) []abci.ValidatorUpdate {
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var genesisState types.GenesisState
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cdc.MustUnmarshalJSON(data, &genesisState)
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// TODO: check if the IBC transfer module account is set
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InitGenesis(ctx, am.keeper, genesisState)
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return []abci.ValidatorUpdate{}
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}
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func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONMarshaler) json.RawMessage {
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gs := ExportGenesis(ctx, am.keeper)
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return cdc.MustMarshalJSON(gs)
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}
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// BeginBlock implements the AppModule interface
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func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
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}
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// EndBlock implements the AppModule interface
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func (am AppModule) EndBlock(ctx sdk.Context, req abci.RequestEndBlock) []abci.ValidatorUpdate {
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return []abci.ValidatorUpdate{}
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}
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// Implement IBCModule callbacks
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func (am AppModule) OnChanOpenInit(
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ctx sdk.Context,
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order channelexported.Order,
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connectionHops []string,
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portID string,
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channelID string,
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chanCap *capability.Capability,
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counterparty channeltypes.Counterparty,
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version string,
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) error {
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// TODO: Enforce ordering, currently relayers use ORDERED channels
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// Require portID is the portID transfer module is bound to
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boundPort := am.keeper.GetPort(ctx)
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if boundPort != portID {
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return sdkerrors.Wrapf(porttypes.ErrInvalidPort, "invalid port: %s, expected %s", portID, boundPort)
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}
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if version != types.Version {
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return sdkerrors.Wrapf(porttypes.ErrInvalidPort, "invalid version: %s, expected %s", version, "ics20-1")
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}
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// Claim channel capability passed back by IBC module
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if err := am.keeper.ClaimCapability(ctx, chanCap, ibctypes.ChannelCapabilityPath(portID, channelID)); err != nil {
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return sdkerrors.Wrap(channel.ErrChannelCapabilityNotFound, err.Error())
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}
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// TODO: escrow
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return nil
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}
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func (am AppModule) OnChanOpenTry(
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ctx sdk.Context,
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order channelexported.Order,
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connectionHops []string,
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portID,
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channelID string,
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chanCap *capability.Capability,
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counterparty channeltypes.Counterparty,
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version,
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counterpartyVersion string,
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) error {
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// TODO: Enforce ordering, currently relayers use ORDERED channels
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// Require portID is the portID transfer module is bound to
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boundPort := am.keeper.GetPort(ctx)
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if boundPort != portID {
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return sdkerrors.Wrapf(porttypes.ErrInvalidPort, "invalid port: %s, expected %s", portID, boundPort)
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}
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if version != types.Version {
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return sdkerrors.Wrapf(porttypes.ErrInvalidPort, "invalid version: %s, expected %s", version, "ics20-1")
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}
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if counterpartyVersion != types.Version {
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return sdkerrors.Wrapf(porttypes.ErrInvalidPort, "invalid counterparty version: %s, expected %s", counterpartyVersion, "ics20-1")
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}
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// Claim channel capability passed back by IBC module
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if err := am.keeper.ClaimCapability(ctx, chanCap, ibctypes.ChannelCapabilityPath(portID, channelID)); err != nil {
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return sdkerrors.Wrap(channel.ErrChannelCapabilityNotFound, err.Error())
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}
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// TODO: escrow
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return nil
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}
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func (am AppModule) OnChanOpenAck(
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ctx sdk.Context,
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portID,
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channelID string,
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counterpartyVersion string,
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) error {
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if counterpartyVersion != types.Version {
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return sdkerrors.Wrapf(porttypes.ErrInvalidPort, "invalid counterparty version: %s, expected %s", counterpartyVersion, "ics20-1")
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}
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return nil
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}
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func (am AppModule) OnChanOpenConfirm(
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ctx sdk.Context,
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portID,
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channelID string,
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) error {
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return nil
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}
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func (am AppModule) OnChanCloseInit(
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ctx sdk.Context,
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portID,
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channelID string,
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) error {
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// Disallow user-initiated channel closing for transfer channels
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return sdkerrors.Wrap(sdkerrors.ErrInvalidRequest, "user cannot close channel")
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}
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func (am AppModule) OnChanCloseConfirm(
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ctx sdk.Context,
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portID,
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channelID string,
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) error {
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return nil
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}
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func (am AppModule) OnRecvPacket(
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ctx sdk.Context,
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packet channeltypes.Packet,
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) (*sdk.Result, error) {
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var data FungibleTokenPacketData
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if err := types.ModuleCdc.UnmarshalJSON(packet.GetData(), &data); err != nil {
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "cannot unmarshal ICS-20 transfer packet data: %s", err.Error())
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}
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acknowledgement := FungibleTokenPacketAcknowledgement{
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Success: true,
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Error: "",
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}
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if err := am.keeper.OnRecvPacket(ctx, packet, data); err != nil {
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acknowledgement = FungibleTokenPacketAcknowledgement{
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Success: false,
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Error: err.Error(),
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}
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}
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if err := am.keeper.PacketExecuted(ctx, packet, acknowledgement.GetBytes()); err != nil {
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return nil, err
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}
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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EventTypePacket,
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sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory),
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sdk.NewAttribute(AttributeKeyReceiver, data.Receiver),
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sdk.NewAttribute(AttributeKeyValue, data.Amount.String()),
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),
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)
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return &sdk.Result{
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Events: ctx.EventManager().Events().ToABCIEvents(),
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}, nil
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}
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func (am AppModule) OnAcknowledgementPacket(
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ctx sdk.Context,
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packet channeltypes.Packet,
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acknowledgement []byte,
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) (*sdk.Result, error) {
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var ack FungibleTokenPacketAcknowledgement
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if err := types.ModuleCdc.UnmarshalJSON(acknowledgement, &ack); err != nil {
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "cannot unmarshal ICS-20 transfer packet acknowledgement: %v", err)
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}
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var data FungibleTokenPacketData
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if err := types.ModuleCdc.UnmarshalJSON(packet.GetData(), &data); err != nil {
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "cannot unmarshal ICS-20 transfer packet data: %s", err.Error())
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}
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if err := am.keeper.OnAcknowledgementPacket(ctx, packet, data, ack); err != nil {
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return nil, err
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}
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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EventTypePacket,
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sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory),
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sdk.NewAttribute(AttributeKeyReceiver, data.Receiver),
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sdk.NewAttribute(AttributeKeyValue, data.Amount.String()),
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sdk.NewAttribute(AttributeKeyAckSuccess, fmt.Sprintf("%t", ack.Success)),
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),
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)
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if !ack.Success {
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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EventTypePacket,
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sdk.NewAttribute(AttributeKeyAckError, ack.Error),
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),
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)
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}
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return &sdk.Result{
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Events: ctx.EventManager().Events().ToABCIEvents(),
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}, nil
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}
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func (am AppModule) OnTimeoutPacket(
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ctx sdk.Context,
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packet channeltypes.Packet,
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) (*sdk.Result, error) {
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var data FungibleTokenPacketData
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if err := types.ModuleCdc.UnmarshalBinaryBare(packet.GetData(), &data); err != nil {
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return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "cannot unmarshal ICS-20 transfer packet data: %s", err.Error())
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}
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// refund tokens
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if err := am.keeper.OnTimeoutPacket(ctx, packet, data); err != nil {
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return nil, err
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}
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ctx.EventManager().EmitEvent(
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sdk.NewEvent(
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EventTypeTimeout,
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sdk.NewAttribute(AttributeKeyRefundReceiver, data.Sender),
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sdk.NewAttribute(AttributeKeyRefundValue, data.Amount.String()),
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sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory),
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),
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)
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return &sdk.Result{
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Events: ctx.EventManager().Events().ToABCIEvents(),
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}, nil
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}
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