Basic RPC and CLI Queries (#77)

- Adds ethermint query command (`emintcli query ethermint <query>`) - Supports block number, storage, code, balance lookups - Implements RPC API methods `eth_blockNumber`, `eth_getStorageAt`, `eth_getBalance`, and `eth_getCode` - Adds tester utility for RPC calls - Adheres to go test format, but should not be run with regular suite - Requires daemon and RPC server to be running - Excluded from `make test`, available with `make test-rpc` - Implemented AppModule interface and added EVM module to app - Required for routing - Implements `InitGenesis` (`x/evm/genesis.go`) and stubs `ExportGenesis` - Modifies GenesisAccount to match expected format
2019-07-25 16:38:55 -04:00
parent d9d45b48b9
commit 92dc7d9a59
18 changed files with 545 additions and 250 deletions
@@ -0,0 +1,96 @@
+package cli
+
+import (
+	"fmt"
+	"github.com/cosmos/cosmos-sdk/client"
+	"github.com/cosmos/cosmos-sdk/client/context"
+	"github.com/cosmos/cosmos-sdk/codec"
+	"github.com/cosmos/ethermint/x/evm/types"
+	"github.com/spf13/cobra"
+)
+
+func GetQueryCmd(moduleName string, cdc *codec.Codec) *cobra.Command {
+	evmQueryCmd := &cobra.Command{
+		Use:                        types.ModuleName,
+		Short:                      "Querying commands for the evm module",
+		DisableFlagParsing:         true,
+		SuggestionsMinimumDistance: 2,
+		RunE:                       client.ValidateCmd,
+	}
+	evmQueryCmd.AddCommand(client.GetCommands(
+		GetCmdGetBlockNumber(moduleName, cdc),
+		GetCmdGetStorageAt(moduleName, cdc),
+		GetCmdGetCode(moduleName, cdc),
+	)...)
+	return evmQueryCmd
+}
+
+// GetCmdGetBlockNumber queries information about the current block number
+func GetCmdGetBlockNumber(queryRoute string, cdc *codec.Codec) *cobra.Command {
+	return &cobra.Command{
+		Use:   "block-number",
+		Short: "Gets block number (block height)",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			cliCtx := context.NewCLIContext().WithCodec(cdc)
+
+			res, _, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/blockNumber", queryRoute), nil)
+			if err != nil {
+				fmt.Printf("could not resolve: %s\n", err)
+				return nil
+			}
+
+			var out types.QueryResBlockNumber
+			cdc.MustUnmarshalJSON(res, &out)
+			return cliCtx.PrintOutput(out)
+		},
+	}
+}
+
+// GetCmdGetStorageAt queries a key in an accounts storage
+func GetCmdGetStorageAt(queryRoute string, cdc *codec.Codec) *cobra.Command {
+	return &cobra.Command{
+		Use:   "storage [account] [key]",
+		Short: "Gets storage for an account at a given key",
+		Args:  cobra.ExactArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			cliCtx := context.NewCLIContext().WithCodec(cdc)
+
+			// TODO: Validate args
+			account := args[0]
+			key := args[1]
+
+			res, _, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/storage/%s/%s", queryRoute, account, key), nil)
+			if err != nil {
+				fmt.Printf("could not resolve: %s\n", err)
+				return nil
+			}
+			var out types.QueryResStorage
+			cdc.MustUnmarshalJSON(res, &out)
+			return cliCtx.PrintOutput(out)
+		},
+	}
+}
+
+// GetCmdGetCode queries the code field of a given address
+func GetCmdGetCode(queryRoute string, cdc *codec.Codec) *cobra.Command {
+	return &cobra.Command{
+		Use:   "code [account]",
+		Short: "Gets code from an account",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			cliCtx := context.NewCLIContext().WithCodec(cdc)
+
+			// TODO: Validate args
+			account := args[0]
+
+			res, _, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/code/%s", queryRoute, account), nil)
+			if err != nil {
+				fmt.Printf("could not resolve: %s\n", err)
+				return nil
+			}
+			var out types.QueryResCode
+			cdc.MustUnmarshalJSON(res, &out)
+			return cliCtx.PrintOutput(out)
+		},
+	}
+}