Merge PR: evm query params (#465)

x/evm/client/cli/query.go

@@ -2,6 +2,7 @@ package cli
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -26,6 +27,7 @@ func GetQueryCmd(moduleName string, cdc *codec.Codec) *cobra.Command {
 	evmQueryCmd.AddCommand(flags.GetCommands(
 		GetCmdGetStorageAt(moduleName, cdc),
 		GetCmdGetCode(moduleName, cdc),
+		GetCmdQueryParams(moduleName, cdc),
 	)...)
 	return evmQueryCmd
 }
@@ -86,3 +88,29 @@ func GetCmdGetCode(queryRoute string, cdc *codec.Codec) *cobra.Command {
 		},
 	}
 }
+
+// GetCmdQueryParams implements the query params command.
+func GetCmdQueryParams(queryRoute string, cdc *codec.Codec) *cobra.Command {
+	return &cobra.Command{
+		Use:   "params",
+		Short: "Query all the modifiable parameters of gov proposal",
+		Long: strings.TrimSpace(`Query the all the parameters for the governance process:
+
+$ okexchaincli query evm params
+`),
+		Args: cobra.NoArgs,
+		RunE: func(_ *cobra.Command, _ []string) error {
+			cliCtx := context.NewCLIContext().WithCodec(cdc)
+
+			route := fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryParameters)
+			bz, _, err := cliCtx.QueryWithData(route, nil)
+			if err != nil {
+				return err
+			}
+
+			var params types.Params
+			cdc.MustUnmarshalJSON(bz, &params)
+			return cliCtx.PrintOutput(params)
+		},
+	}
+}

x/evm/keeper/querier.go

@@ -45,6 +45,8 @@ func NewQuerier(keeper Keeper) sdk.Querier {
 			return queryAccount(ctx, path, keeper)
 		case types.QueryExportAccount:
 			return queryExportAccount(ctx, path, keeper)
+		case types.QueryParameters:
+			return queryParams(ctx, keeper)
 		default:
 			return nil, sdkerrors.Wrap(sdkerrors.ErrUnknownRequest, "unknown query endpoint")
 		}
@@ -230,3 +232,12 @@ func queryExportAccount(ctx sdk.Context, path []string, keeper Keeper) ([]byte,
 
 	return bz, nil
 }
+
+func queryParams(ctx sdk.Context, keeper Keeper) (res []byte, err sdk.Error) {
+	params := keeper.GetParams(ctx)
+	res, errUnmarshal := codec.MarshalJSONIndent(types.ModuleCdc, params)
+	if errUnmarshal != nil {
+		return nil, sdk.ErrInternal(sdk.AppendMsgToErr("failed to marshal result to JSON", errUnmarshal.Error()))
+	}
+	return res, nil
+}

x/evm/types/querier.go

@@ -20,6 +20,8 @@ const (
 	QueryLogs            = "logs"
 	QueryAccount         = "account"
 	QueryExportAccount   = "exportAccount"
+	// QueryParameters defines 	QueryParameters = "params" query route path
+	QueryParameters = "params"
 )
 
 // QueryResProtocolVersion is response type for protocol version query