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module.go
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module.go
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package staking
import (
"context"
"encoding/json"
"fmt"
"math/rand"
"github.com/gogo/protobuf/grpc"
"github.com/grpc-ecosystem/grpc-gateway/runtime"
"github.com/gorilla/mux"
"github.com/spf13/cobra"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/codec"
cdctypes "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/cosmos/cosmos-sdk/x/staking/client/cli"
"github.com/cosmos/cosmos-sdk/x/staking/client/rest"
"github.com/cosmos/cosmos-sdk/x/staking/keeper"
"github.com/cosmos/cosmos-sdk/x/staking/simulation"
"github.com/cosmos/cosmos-sdk/x/staking/types"
)
var (
_ module.AppModule = AppModule{}
_ module.AppModuleBasic = AppModuleBasic{}
_ module.AppModuleSimulation = AppModule{}
)
// AppModuleBasic defines the basic application module used by the staking module.
type AppModuleBasic struct {
cdc codec.Marshaler
}
var _ module.AppModuleBasic = AppModuleBasic{}
// Name returns the staking module's name.
func (AppModuleBasic) Name() string {
return types.ModuleName
}
// RegisterLegacyAminoCodec registers the staking module's types on the given LegacyAmino codec.
func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino) {
types.RegisterLegacyAminoCodec(cdc)
}
// RegisterInterfaces registers the module's interface types
func (b AppModuleBasic) RegisterInterfaces(registry cdctypes.InterfaceRegistry) {
types.RegisterInterfaces(registry)
}
// DefaultGenesis returns default genesis state as raw bytes for the staking
// module.
func (AppModuleBasic) DefaultGenesis(cdc codec.JSONMarshaler) json.RawMessage {
return cdc.MustMarshalJSON(types.DefaultGenesisState())
}
// ValidateGenesis performs genesis state validation for the staking module.
func (AppModuleBasic) ValidateGenesis(cdc codec.JSONMarshaler, config client.TxEncodingConfig, bz json.RawMessage) error {
var data types.GenesisState
if err := cdc.UnmarshalJSON(bz, &data); err != nil {
return fmt.Errorf("failed to unmarshal %s genesis state: %w", types.ModuleName, err)
}
return ValidateGenesis(&data)
}
// RegisterRESTRoutes registers the REST routes for the staking module.
func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router) {
rest.RegisterHandlers(clientCtx, rtr)
}
// RegisterGRPCRoutes registers the gRPC Gateway routes for the staking module.
func (AppModuleBasic) RegisterGRPCRoutes(clientCtx client.Context, mux *runtime.ServeMux) {
types.RegisterQueryHandlerClient(context.Background(), mux, types.NewQueryClient(clientCtx))
}
// GetTxCmd returns the root tx command for the staking module.
func (AppModuleBasic) GetTxCmd() *cobra.Command {
return cli.NewTxCmd()
}
// GetQueryCmd returns no root query command for the staking module.
func (AppModuleBasic) GetQueryCmd() *cobra.Command {
return cli.GetQueryCmd()
}
// AppModule implements an application module for the staking module.
type AppModule struct {
AppModuleBasic
keeper keeper.Keeper
accountKeeper types.AccountKeeper
bankKeeper types.BankKeeper
}
// NewAppModule creates a new AppModule object
func NewAppModule(cdc codec.Marshaler, keeper keeper.Keeper, ak types.AccountKeeper, bk types.BankKeeper) AppModule {
return AppModule{
AppModuleBasic: AppModuleBasic{cdc: cdc},
keeper: keeper,
accountKeeper: ak,
bankKeeper: bk,
}
}
// Name returns the staking module's name.
func (AppModule) Name() string {
return types.ModuleName
}
// RegisterInvariants registers the staking module invariants.
func (am AppModule) RegisterInvariants(ir sdk.InvariantRegistry) {
keeper.RegisterInvariants(ir, am.keeper)
}
// Route returns the message routing key for the staking module.
func (am AppModule) Route() sdk.Route {
return sdk.NewRoute(types.RouterKey, NewHandler(am.keeper))
}
// QuerierRoute returns the staking module's querier route name.
func (AppModule) QuerierRoute() string {
return types.QuerierRoute
}
// LegacyQuerierHandler returns the staking module sdk.Querier.
func (am AppModule) LegacyQuerierHandler(legacyQuerierCdc *codec.LegacyAmino) sdk.Querier {
return keeper.NewQuerier(am.keeper, legacyQuerierCdc)
}
// RegisterQueryService registers a GRPC query service to respond to the
// module-specific GRPC queries.
func (am AppModule) RegisterQueryService(server grpc.Server) {
querier := keeper.Querier{Keeper: am.keeper}
types.RegisterQueryServer(server, querier)
}
// InitGenesis performs genesis initialization for the staking module. It returns
// no validator updates.
func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONMarshaler, data json.RawMessage) []abci.ValidatorUpdate {
var genesisState types.GenesisState
cdc.MustUnmarshalJSON(data, &genesisState)
return InitGenesis(ctx, am.keeper, am.accountKeeper, am.bankKeeper, &genesisState)
}
// ExportGenesis returns the exported genesis state as raw bytes for the staking
// module.
func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONMarshaler) json.RawMessage {
gs := ExportGenesis(ctx, am.keeper)
return cdc.MustMarshalJSON(gs)
}
// BeginBlock returns the begin blocker for the staking module.
func (am AppModule) BeginBlock(ctx sdk.Context, _ abci.RequestBeginBlock) {
BeginBlocker(ctx, am.keeper)
}
// EndBlock returns the end blocker for the staking module. It returns no validator
// updates.
func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) []abci.ValidatorUpdate {
return EndBlocker(ctx, am.keeper)
}
//____________________________________________________________________________
// AppModuleSimulation functions
// GenerateGenesisState creates a randomized GenState of the staking module.
func (AppModule) GenerateGenesisState(simState *module.SimulationState) {
simulation.RandomizedGenState(simState)
}
// ProposalContents doesn't return any content functions for governance proposals.
func (AppModule) ProposalContents(simState module.SimulationState) []simtypes.WeightedProposalContent {
return nil
}
// RandomizedParams creates randomized staking param changes for the simulator.
func (AppModule) RandomizedParams(r *rand.Rand) []simtypes.ParamChange {
return simulation.ParamChanges(r)
}
// RegisterStoreDecoder registers a decoder for staking module's types
func (am AppModule) RegisterStoreDecoder(sdr sdk.StoreDecoderRegistry) {
sdr[types.StoreKey] = simulation.NewDecodeStore(am.cdc)
}
// WeightedOperations returns the all the staking module operations with their respective weights.
func (am AppModule) WeightedOperations(simState module.SimulationState) []simtypes.WeightedOperation {
return simulation.WeightedOperations(
simState.AppParams, simState.Cdc, am.accountKeeper, am.bankKeeper, am.keeper,
)
}