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module.go
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module.go
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package transfer
import (
"context"
"encoding/json"
"fmt"
"math/rand"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/codec"
codectypes "github.com/cosmos/cosmos-sdk/codec/types"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/module"
simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
"github.com/grpc-ecosystem/grpc-gateway/runtime"
"github.com/spf13/cobra"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/cosmos/ibc-go/v7/modules/apps/transfer/client/cli"
"github.com/cosmos/ibc-go/v7/modules/apps/transfer/keeper"
"github.com/cosmos/ibc-go/v7/modules/apps/transfer/simulation"
"github.com/cosmos/ibc-go/v7/modules/apps/transfer/types"
porttypes "github.com/cosmos/ibc-go/v7/modules/core/05-port/types"
)
var (
_ module.AppModule = AppModule{}
_ module.AppModuleBasic = AppModuleBasic{}
_ porttypes.IBCModule = IBCModule{}
)
// AppModuleBasic is the IBC Transfer AppModuleBasic
type AppModuleBasic struct{}
// Name implements AppModuleBasic interface
func (AppModuleBasic) Name() string {
return types.ModuleName
}
// RegisterLegacyAminoCodec implements AppModuleBasic interface
func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
types.RegisterLegacyAminoCodec(cdc)
}
// RegisterInterfaces registers module concrete types into protobuf Any.
func (AppModuleBasic) RegisterInterfaces(registry codectypes.InterfaceRegistry) {
types.RegisterInterfaces(registry)
}
// DefaultGenesis returns default genesis state as raw bytes for the ibc
// transfer module.
func (AppModuleBasic) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage {
return cdc.MustMarshalJSON(types.DefaultGenesisState())
}
// ValidateGenesis performs genesis state validation for the ibc transfer module.
func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, config client.TxEncodingConfig, bz json.RawMessage) error {
var gs types.GenesisState
if err := cdc.UnmarshalJSON(bz, &gs); err != nil {
return fmt.Errorf("failed to unmarshal %s genesis state: %w", types.ModuleName, err)
}
return gs.Validate()
}
// RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the ibc-transfer module.
func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
err := types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx))
if err != nil {
panic(err)
}
}
// GetTxCmd implements AppModuleBasic interface
func (AppModuleBasic) GetTxCmd() *cobra.Command {
return cli.NewTxCmd()
}
// GetQueryCmd implements AppModuleBasic interface
func (AppModuleBasic) GetQueryCmd() *cobra.Command {
return cli.GetQueryCmd()
}
// AppModule represents the AppModule for this module
type AppModule struct {
AppModuleBasic
keeper keeper.Keeper
}
// NewAppModule creates a new 20-transfer module
func NewAppModule(k keeper.Keeper) AppModule {
return AppModule{
keeper: k,
}
}
// RegisterInvariants implements the AppModule interface
func (AppModule) RegisterInvariants(ir sdk.InvariantRegistry) {
// TODO
}
// RegisterServices registers module services.
func (am AppModule) RegisterServices(cfg module.Configurator) {
types.RegisterMsgServer(cfg.MsgServer(), am.keeper)
types.RegisterQueryServer(cfg.QueryServer(), am.keeper)
m := keeper.NewMigrator(am.keeper)
if err := cfg.RegisterMigration(types.ModuleName, 1, m.MigrateTraces); err != nil {
panic(fmt.Sprintf("failed to migrate transfer app from version 1 to 2: %v", err))
}
}
// InitGenesis performs genesis initialization for the ibc-transfer module. It returns
// no validator updates.
func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate {
var genesisState types.GenesisState
cdc.MustUnmarshalJSON(data, &genesisState)
am.keeper.InitGenesis(ctx, genesisState)
return []abci.ValidatorUpdate{}
}
// ExportGenesis returns the exported genesis state as raw bytes for the ibc-transfer
// module.
func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage {
gs := am.keeper.ExportGenesis(ctx)
return cdc.MustMarshalJSON(gs)
}
// ConsensusVersion implements AppModule/ConsensusVersion.
func (AppModule) ConsensusVersion() uint64 { return 2 }
// BeginBlock implements the AppModule interface
func (am AppModule) BeginBlock(ctx sdk.Context, req abci.RequestBeginBlock) {
}
// EndBlock implements the AppModule interface
func (am AppModule) EndBlock(ctx sdk.Context, req abci.RequestEndBlock) []abci.ValidatorUpdate {
return []abci.ValidatorUpdate{}
}
// AppModuleSimulation functions
// GenerateGenesisState creates a randomized GenState of the transfer module.
func (AppModule) GenerateGenesisState(simState *module.SimulationState) {
simulation.RandomizedGenState(simState)
}
// ProposalContents doesn't return any content functions for governance proposals.
func (AppModule) ProposalContents(_ module.SimulationState) []simtypes.WeightedProposalMsg {
return nil
}
// RandomizedParams creates randomized ibc-transfer param changes for the simulator.
func (AppModule) RandomizedParams(r *rand.Rand) []simtypes.LegacyParamChange {
return simulation.ParamChanges(r)
}
// RegisterStoreDecoder registers a decoder for transfer module's types
func (am AppModule) RegisterStoreDecoder(sdr sdk.StoreDecoderRegistry) {
sdr[types.StoreKey] = simulation.NewDecodeStore(am.keeper)
}
// WeightedOperations returns the all the transfer module operations with their respective weights.
func (am AppModule) WeightedOperations(_ module.SimulationState) []simtypes.WeightedOperation {
return nil
}