feat(attestation): add x/attestation/module — AppModule, genesis, EndBlock

Author: RampageRPM1

x/attestation/module/module.go

@@ -0,0 +1,108 @@
+// Package module implements the Cosmos SDK AppModule interface for x/attestation.
+package module
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/grpc-ecosystem/grpc-gateway/runtime"
+	"github.com/spf13/cobra"
+
+	"cosmossdk.io/core/appmodule"
+	"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"
+
+	"rampage/x/attestation/keeper"
+	"rampage/x/attestation/types"
+)
+
+const ConsensusVersion = 1
+
+var (
+	_ module.AppModuleBasic = AppModule{}
+	_ appmodule.AppModule   = AppModule{}
+)
+
+// AppModule implements the attestation module.
+type AppModule struct {
+	cdc    codec.Codec
+	keeper keeper.Keeper
+}
+
+// NewAppModule creates a new AppModule for x/attestation.
+func NewAppModule(cdc codec.Codec, keeper keeper.Keeper) AppModule {
+	return AppModule{cdc: cdc, keeper: keeper}
+}
+
+// Name returns the module name.
+func (AppModule) Name() string { return types.ModuleName }
+
+// RegisterLegacyAminoCodec registers amino codec (required by SDK).
+func (AppModule) RegisterLegacyAminoCodec(_ *codec.LegacyAmino) {}
+
+// RegisterInterfaces registers the module's interface types.
+func (AppModule) RegisterInterfaces(_ codectypes.InterfaceRegistry) {}
+
+// RegisterGRPCGatewayRoutes registers gRPC gateway routes.
+func (AppModule) RegisterGRPCGatewayRoutes(_ client.Context, _ *runtime.ServeMux) {}
+
+// GetTxCmd returns the root tx command for x/attestation.
+func (AppModule) GetTxCmd() *cobra.Command { return nil }
+
+// GetQueryCmd returns the root query command for x/attestation.
+func (AppModule) GetQueryCmd() *cobra.Command { return nil }
+
+// DefaultGenesis returns the default genesis state as raw JSON.
+func (am AppModule) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage {
+	return cdc.MustMarshalJSON(types.DefaultGenesis())
+}
+
+// ValidateGenesis validates the genesis state.
+func (am AppModule) ValidateGenesis(cdc codec.JSONCodec, _ 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()
+}
+
+// IsOnePerModuleType implements the depinject.OnePerModuleType interface.
+func (AppModule) IsOnePerModuleType() {}
+
+// IsAppModule implements the appmodule.AppModule interface.
+func (AppModule) IsAppModule() {}
+
+// ConsensusVersion implements AppModule/HasConsensusVersion.
+func (AppModule) ConsensusVersion() uint64 { return ConsensusVersion }
+
+// InitGenesis initializes the module's state from a genesis state.
+func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, bz json.RawMessage) {
+	var gs types.GenesisState
+	cdc.MustUnmarshalJSON(bz, &gs)
+	// TODO: apply genesis state to keeper (oracle node registrations, initial params)
+	_ = gs
+}
+
+// ExportGenesis returns the module's genesis state as raw JSON.
+func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage {
+	gs := types.GenesisState{
+		Params: am.keeper.GetParams(ctx),
+	}
+	return cdc.MustMarshalJSON(&gs)
+}
+
+// RegisterServices registers gRPC services.
+func (am AppModule) RegisterServices(cfg module.Configurator) {
+	// TODO: register MsgServer and QueryServer once proto-generated stubs exist
+	_ = cfg
+}
+
+// EndBlock executes all ABCI EndBlock logic for the attestation module.
+func (am AppModule) EndBlock(_ context.Context) error {
+	// No periodic EndBlock logic required for attestation at this time.
+	return nil
+}