laconicd/x/evm/client/cli/query.go
David Ansermino 92dc7d9a59
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

97 lines
2.8 KiB
Go

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)
},
}
}