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package main
import (
"bufio"
"encoding/hex"
"errors"
"fmt"
"io"
"os"
"strings"
. "github.com/tendermint/go-common"
"github.com/tendermint/tmsp/client"
"github.com/tendermint/tmsp/types"
"github.com/urfave/cli"
)
// client is a global variable so it can be reused by the console
var client tmspcli.Client
func main() {
app := cli.NewApp()
app.Name = "tmsp-cli"
app.Usage = "tmsp-cli [command] [args...]"
app.Version = "0.2.1" // better error handling in console
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "address",
Value: "tcp://127.0.0.1:46658",
Usage: "address of application socket",
},
cli.StringFlag{
Name: "tmsp",
Value: "socket",
Usage: "socket or grpc",
},
cli.BoolFlag{
Name: "verbose",
Usage: "print the command and results as if it were a console session",
},
}
app.Commands = []cli.Command{
{
Name: "batch",
Usage: "Run a batch of tmsp commands against an application",
Action: func(c *cli.Context) error {
return cmdBatch(app, c)
},
},
{
Name: "console",
Usage: "Start an interactive tmsp console for multiple commands",
Action: func(c *cli.Context) error {
return cmdConsole(app, c)
},
},
{
Name: "echo",
Usage: "Have the application echo a message",
Action: func(c *cli.Context) error {
return cmdEcho(c)
},
},
{
Name: "info",
Usage: "Get some info about the application",
Action: func(c *cli.Context) error {
return cmdInfo(c)
},
},
{
Name: "set_option",
Usage: "Set an option on the application",
Action: func(c *cli.Context) error {
return cmdSetOption(c)
},
},
{
Name: "append_tx",
Usage: "Append a new tx to application",
Action: func(c *cli.Context) error {
return cmdAppendTx(c)
},
},
{
Name: "check_tx",
Usage: "Validate a tx",
Action: func(c *cli.Context) error {
return cmdCheckTx(c)
},
},
{
Name: "commit",
Usage: "Commit the application state and return the Merkle root hash",
Action: func(c *cli.Context) error {
return cmdCommit(c)
},
},
{
Name: "query",
Usage: "Query application state",
Action: func(c *cli.Context) error {
return cmdQuery(c)
},
},
}
app.Before = before
err := app.Run(os.Args)
if err != nil {
Exit(err.Error())
}
}
func before(c *cli.Context) error {
if client == nil {
var err error
client, err = tmspcli.NewClient(c.GlobalString("address"), c.GlobalString("tmsp"), false)
if err != nil {
Exit(err.Error())
}
}
return nil
}
// badCmd is called when we invoke with an invalid first argument (just for console for now)
func badCmd(c *cli.Context, cmd string) {
fmt.Println("Unknown command:", cmd)
fmt.Println("Please try one of the following:")
fmt.Println("")
cli.DefaultAppComplete(c)
}
//--------------------------------------------------------------------------------
func cmdBatch(app *cli.App, c *cli.Context) error {
bufReader := bufio.NewReader(os.Stdin)
for {
line, more, err := bufReader.ReadLine()
if more {
return errors.New("Input line is too long")
} else if err == io.EOF {
break
} else if len(line) == 0 {
continue
} else if err != nil {
return err
}
args := []string{"tmsp-cli"}
if c.GlobalBool("verbose") {
args = append(args, "--verbose")
}
args = append(args, strings.Split(string(line), " ")...)
app.Run(args)
}
return nil
}
func cmdConsole(app *cli.App, c *cli.Context) error {
// don't hard exit on mistyped commands (eg. check vs check_tx)
app.CommandNotFound = badCmd
for {
fmt.Printf("\n> ")
bufReader := bufio.NewReader(os.Stdin)
line, more, err := bufReader.ReadLine()
if more {
return errors.New("Input is too long")
} else if err != nil {
return err
}
args := []string{"tmsp-cli"}
args = append(args, strings.Split(string(line), " ")...)
if err := app.Run(args); err != nil {
// if the command doesn't succeed, inform the user without exiting
fmt.Println("Error:", err.Error())
}
}
}
// Have the application echo a message
func cmdEcho(c *cli.Context) error {
args := c.Args()
if len(args) != 1 {
return errors.New("Command echo takes 1 argument")
}
res := client.EchoSync(args[0])
printResponse(c, res, string(res.Data), false)
return nil
}
// Get some info from the application
func cmdInfo(c *cli.Context) error {
res, _, _, _ := client.InfoSync()
printResponse(c, res, string(res.Data), false)
return nil
}
// Set an option on the application
func cmdSetOption(c *cli.Context) error {
args := c.Args()
if len(args) != 2 {
return errors.New("Command set_option takes 2 arguments (key, value)")
}
res := client.SetOptionSync(args[0], args[1])
printResponse(c, res, Fmt("%s=%s", args[0], args[1]), false)
return nil
}
// Append a new tx to application
func cmdAppendTx(c *cli.Context) error {
args := c.Args()
if len(args) != 1 {
return errors.New("Command append_tx takes 1 argument")
}
txBytes := stringOrHexToBytes(c.Args()[0])
res := client.AppendTxSync(txBytes)
printResponse(c, res, string(res.Data), true)
return nil
}
// Validate a tx
func cmdCheckTx(c *cli.Context) error {
args := c.Args()
if len(args) != 1 {
return errors.New("Command check_tx takes 1 argument")
}
txBytes := stringOrHexToBytes(c.Args()[0])
res := client.CheckTxSync(txBytes)
printResponse(c, res, string(res.Data), true)
return nil
}
// Get application Merkle root hash
func cmdCommit(c *cli.Context) error {
res := client.CommitSync()
printResponse(c, res, Fmt("%X", res.Data), false)
return nil
}
// Query application state
func cmdQuery(c *cli.Context) error {
args := c.Args()
if len(args) != 1 {
return errors.New("Command query takes 1 argument")
}
queryBytes := stringOrHexToBytes(c.Args()[0])
res := client.QuerySync(queryBytes)
printResponse(c, res, string(res.Data), true)
return nil
}
//--------------------------------------------------------------------------------
func printResponse(c *cli.Context, res types.Result, s string, printCode bool) {
if c.GlobalBool("verbose") {
fmt.Println(">", c.Command.Name, strings.Join(c.Args(), " "))
}
if printCode {
fmt.Printf("-> code: %s\n", res.Code.String())
}
/*if res.Error != "" {
fmt.Printf("-> error: %s\n", res.Error)
}*/
if s != "" {
fmt.Printf("-> data: {%s}\n", s)
}
if res.Log != "" {
fmt.Printf("-> log: %s\n", res.Log)
}
if c.GlobalBool("verbose") {
fmt.Println("")
}
}
// NOTE: s is interpreted as a string unless prefixed with 0x
func stringOrHexToBytes(s string) []byte {
if len(s) > 2 && s[:2] == "0x" {
b, err := hex.DecodeString(s[2:])
if err != nil {
fmt.Println("Error decoding hex argument:", err.Error())
}
return b
}
return []byte(s)
}