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tendermint/abci/cmd/abci-cli/abci-cli.go

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package main
import (
"bufio"
"encoding/hex"
"errors"
"fmt"
"io"
"os"
"os/signal"
"strings"
"syscall"
"github.com/spf13/cobra"
"github.com/tendermint/tendermint/libs/log"
"github.com/tendermint/tendermint/version"
abciclient "github.com/tendermint/tendermint/abci/client"
"github.com/tendermint/tendermint/abci/example/code"
"github.com/tendermint/tendermint/abci/example/kvstore"
"github.com/tendermint/tendermint/abci/server"
servertest "github.com/tendermint/tendermint/abci/tests/server"
"github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/proto/tendermint/crypto"
)
// client is a global variable so it can be reused by the console
var (
client abciclient.Client
)
// flags
var (
// global
flagAddress string
flagAbci string
flagVerbose bool // for the println output
flagLogLevel string // for the logger
// query
flagPath string
flagHeight int
flagProve bool
// kvstore
flagPersist string
)
func RootCmmand(logger log.Logger) *cobra.Command {
return &cobra.Command{
Use: "abci-cli",
Short: "the ABCI CLI tool wraps an ABCI client",
Long: "the ABCI CLI tool wraps an ABCI client and is used for testing ABCI servers",
PersistentPreRunE: func(cmd *cobra.Command, args []string) (err error) {
switch cmd.Use {
case "kvstore", "version":
return nil
}
if client == nil {
var err error
client, err = abciclient.NewClient(logger.With("module", "abci-client"), flagAddress, flagAbci, false)
if err != nil {
return err
}
if err := client.Start(cmd.Context()); err != nil {
return err
}
}
return nil
},
}
}
// Structure for data passed to print response.
type response struct {
// generic abci response
Data []byte
Code uint32
Info string
Log string
Query *queryResponse
}
type queryResponse struct {
Key []byte
Value []byte
Height int64
ProofOps *crypto.ProofOps
}
func Execute() error {
logger, err := log.NewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo)
if err != nil {
return err
}
cmd := RootCmmand(logger)
addGlobalFlags(cmd)
addCommands(cmd, logger)
return cmd.Execute()
}
func addGlobalFlags(cmd *cobra.Command) {
cmd.PersistentFlags().StringVarP(&flagAddress,
"address",
"",
"tcp://0.0.0.0:26658",
"address of application socket")
cmd.PersistentFlags().StringVarP(&flagAbci, "abci", "", "socket", "either socket or grpc")
cmd.PersistentFlags().BoolVarP(&flagVerbose,
"verbose",
"v",
false,
"print the command and results as if it were a console session")
cmd.PersistentFlags().StringVarP(&flagLogLevel, "log_level", "", "debug", "set the logger level")
}
func addCommands(cmd *cobra.Command, logger log.Logger) {
cmd.AddCommand(batchCmd)
cmd.AddCommand(consoleCmd)
cmd.AddCommand(echoCmd)
cmd.AddCommand(infoCmd)
cmd.AddCommand(deliverTxCmd)
cmd.AddCommand(checkTxCmd)
cmd.AddCommand(commitCmd)
cmd.AddCommand(versionCmd)
cmd.AddCommand(testCmd)
cmd.AddCommand(getQueryCmd())
// examples
cmd.AddCommand(getKVStoreCmd(logger))
}
var batchCmd = &cobra.Command{
Use: "batch",
Short: "run a batch of abci commands against an application",
Long: `run a batch of abci commands against an application
This command is run by piping in a file containing a series of commands
you'd like to run:
abci-cli batch < example.file
where example.file looks something like:
check_tx 0x00
check_tx 0xff
deliver_tx 0x00
check_tx 0x00
deliver_tx 0x01
deliver_tx 0x04
info
`,
Args: cobra.ExactArgs(0),
RunE: cmdBatch,
}
var consoleCmd = &cobra.Command{
Use: "console",
Short: "start an interactive ABCI console for multiple commands",
Long: `start an interactive ABCI console for multiple commands
This command opens an interactive console for running any of the other commands
without opening a new connection each time
`,
Args: cobra.ExactArgs(0),
ValidArgs: []string{"echo", "info", "deliver_tx", "check_tx", "commit", "query"},
RunE: cmdConsole,
}
var echoCmd = &cobra.Command{
Use: "echo",
Short: "have the application echo a message",
Long: "have the application echo a message",
Args: cobra.ExactArgs(1),
RunE: cmdEcho,
}
var infoCmd = &cobra.Command{
Use: "info",
Short: "get some info about the application",
Long: "get some info about the application",
Args: cobra.ExactArgs(0),
RunE: cmdInfo,
}
var deliverTxCmd = &cobra.Command{
Use: "deliver_tx",
Short: "deliver a new transaction to the application",
Long: "deliver a new transaction to the application",
Args: cobra.ExactArgs(1),
RunE: cmdFinalizeBlock,
}
var checkTxCmd = &cobra.Command{
Use: "check_tx",
Short: "validate a transaction",
Long: "validate a transaction",
Args: cobra.ExactArgs(1),
RunE: cmdCheckTx,
}
var commitCmd = &cobra.Command{
Use: "commit",
Short: "commit the application state and return the Merkle root hash",
Long: "commit the application state and return the Merkle root hash",
Args: cobra.ExactArgs(0),
RunE: cmdCommit,
}
var versionCmd = &cobra.Command{
Use: "version",
Short: "print ABCI console version",
Long: "print ABCI console version",
Args: cobra.ExactArgs(0),
RunE: func(cmd *cobra.Command, args []string) error {
fmt.Println(version.ABCIVersion)
return nil
},
}
func getQueryCmd() *cobra.Command {
cmd := &cobra.Command{
Use: "query",
Short: "query the application state",
Long: "query the application state",
Args: cobra.ExactArgs(1),
RunE: cmdQuery,
}
cmd.PersistentFlags().StringVarP(&flagPath, "path", "", "/store", "path to prefix query with")
cmd.PersistentFlags().IntVarP(&flagHeight, "height", "", 0, "height to query the blockchain at")
cmd.PersistentFlags().BoolVarP(&flagProve,
"prove",
"",
false,
"whether or not to return a merkle proof of the query result")
return cmd
}
func getKVStoreCmd(logger log.Logger) *cobra.Command {
cmd := &cobra.Command{
Use: "kvstore",
Short: "ABCI demo example",
Long: "ABCI demo example",
Args: cobra.ExactArgs(0),
RunE: makeKVStoreCmd(logger),
}
cmd.PersistentFlags().StringVarP(&flagPersist, "persist", "", "", "directory to use for a database")
return cmd
}
var testCmd = &cobra.Command{
Use: "test",
Short: "run integration tests",
Long: "run integration tests",
Args: cobra.ExactArgs(0),
RunE: cmdTest,
}
// Generates new Args array based off of previous call args to maintain flag persistence
func persistentArgs(line []byte) []string {
// generate the arguments to run from original os.Args
// to maintain flag arguments
args := os.Args
args = args[:len(args)-1] // remove the previous command argument
if len(line) > 0 { // prevents introduction of extra space leading to argument parse errors
args = append(args, strings.Split(string(line), " ")...)
}
return args
}
//--------------------------------------------------------------------------------
func compose(fs []func() error) error {
if len(fs) == 0 {
return nil
}
err := fs[0]()
if err == nil {
return compose(fs[1:])
}
return err
}
func cmdTest(cmd *cobra.Command, args []string) error {
ctx := cmd.Context()
return compose(
[]func() error{
func() error { return servertest.InitChain(ctx, client) },
func() error { return servertest.Commit(ctx, client, nil) },
func() error {
return servertest.FinalizeBlock(ctx, client, [][]byte{
[]byte("abc"),
}, []uint32{
code.CodeTypeBadNonce,
}, nil)
},
func() error { return servertest.Commit(ctx, client, nil) },
func() error {
return servertest.FinalizeBlock(ctx, client, [][]byte{
{0x00},
}, []uint32{
code.CodeTypeOK,
}, nil)
},
func() error { return servertest.Commit(ctx, client, []byte{0, 0, 0, 0, 0, 0, 0, 1}) },
func() error {
return servertest.FinalizeBlock(ctx, client, [][]byte{
{0x00},
{0x01},
{0x00, 0x02},
{0x00, 0x03},
{0x00, 0x00, 0x04},
{0x00, 0x00, 0x06},
}, []uint32{
code.CodeTypeBadNonce,
code.CodeTypeOK,
code.CodeTypeOK,
code.CodeTypeOK,
code.CodeTypeOK,
code.CodeTypeBadNonce,
}, nil)
},
func() error { return servertest.Commit(ctx, client, []byte{0, 0, 0, 0, 0, 0, 0, 5}) },
})
}
func cmdBatch(cmd *cobra.Command, args []string) error {
bufReader := bufio.NewReader(os.Stdin)
LOOP:
for {
line, more, err := bufReader.ReadLine()
switch {
case more:
return errors.New("input line is too long")
case err == io.EOF:
break LOOP
case len(line) == 0:
continue
case err != nil:
return err
}
cmdArgs := persistentArgs(line)
if err := muxOnCommands(cmd, cmdArgs); err != nil {
return err
}
fmt.Println()
}
return nil
}
func cmdConsole(cmd *cobra.Command, args []string) error {
for {
fmt.Printf("> ")
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
}
pArgs := persistentArgs(line)
if err := muxOnCommands(cmd, pArgs); err != nil {
return err
}
}
}
func muxOnCommands(cmd *cobra.Command, pArgs []string) error {
if len(pArgs) < 2 {
return errors.New("expecting persistent args of the form: abci-cli [command] <...>")
}
// TODO: this parsing is fragile
args := []string{}
for i := 0; i < len(pArgs); i++ {
arg := pArgs[i]
// check for flags
if strings.HasPrefix(arg, "-") {
// if it has an equal, we can just skip
if strings.Contains(arg, "=") {
continue
}
// if its a boolean, we can just skip
_, err := cmd.Flags().GetBool(strings.TrimLeft(arg, "-"))
if err == nil {
continue
}
// otherwise, we need to skip the next one too
i++
continue
}
// append the actual arg
args = append(args, arg)
}
var subCommand string
var actualArgs []string
if len(args) > 1 {
subCommand = args[1]
}
if len(args) > 2 {
actualArgs = args[2:]
}
cmd.Use = subCommand // for later print statements ...
switch strings.ToLower(subCommand) {
case "check_tx":
return cmdCheckTx(cmd, actualArgs)
case "commit":
return cmdCommit(cmd, actualArgs)
case "deliver_tx":
return cmdFinalizeBlock(cmd, actualArgs)
case "echo":
return cmdEcho(cmd, actualArgs)
case "info":
return cmdInfo(cmd, actualArgs)
case "query":
return cmdQuery(cmd, actualArgs)
default:
return cmdUnimplemented(cmd, pArgs)
}
}
func cmdUnimplemented(cmd *cobra.Command, args []string) error {
msg := "unimplemented command"
if len(args) > 0 {
msg += fmt.Sprintf(" args: [%s]", strings.Join(args, " "))
}
printResponse(cmd, args, response{
Code: codeBad,
Log: msg,
})
fmt.Println("Available commands:")
for _, cmd := range cmd.Commands() {
fmt.Printf("%s: %s\n", cmd.Use, cmd.Short)
}
fmt.Println("Use \"[command] --help\" for more information about a command.")
return nil
}
// Have the application echo a message
func cmdEcho(cmd *cobra.Command, args []string) error {
msg := ""
if len(args) > 0 {
msg = args[0]
}
res, err := client.Echo(cmd.Context(), msg)
if err != nil {
return err
}
printResponse(cmd, args, response{
Data: []byte(res.Message),
})
return nil
}
// Get some info from the application
func cmdInfo(cmd *cobra.Command, args []string) error {
var version string
if len(args) == 1 {
version = args[0]
}
res, err := client.Info(cmd.Context(), types.RequestInfo{Version: version})
if err != nil {
return err
}
printResponse(cmd, args, response{
Data: []byte(res.Data),
})
return nil
}
const codeBad uint32 = 10
// Append a new tx to application
func cmdFinalizeBlock(cmd *cobra.Command, args []string) error {
if len(args) == 0 {
printResponse(cmd, args, response{
Code: codeBad,
Log: "want the tx",
})
return nil
}
txBytes, err := stringOrHexToBytes(args[0])
if err != nil {
return err
}
res, err := client.FinalizeBlock(cmd.Context(), types.RequestFinalizeBlock{Txs: [][]byte{txBytes}})
if err != nil {
return err
}
for _, tx := range res.Txs {
printResponse(cmd, args, response{
Code: tx.Code,
Data: tx.Data,
Info: tx.Info,
Log: tx.Log,
})
}
return nil
}
// Validate a tx
func cmdCheckTx(cmd *cobra.Command, args []string) error {
if len(args) == 0 {
printResponse(cmd, args, response{
Code: codeBad,
Info: "want the tx",
})
return nil
}
txBytes, err := stringOrHexToBytes(args[0])
if err != nil {
return err
}
res, err := client.CheckTx(cmd.Context(), types.RequestCheckTx{Tx: txBytes})
if err != nil {
return err
}
printResponse(cmd, args, response{
Code: res.Code,
Data: res.Data,
Info: res.Info,
Log: res.Log,
})
return nil
}
// Get application Merkle root hash
func cmdCommit(cmd *cobra.Command, args []string) error {
res, err := client.Commit(cmd.Context())
if err != nil {
return err
}
printResponse(cmd, args, response{
Data: res.Data,
})
return nil
}
// Query application state
func cmdQuery(cmd *cobra.Command, args []string) error {
if len(args) == 0 {
printResponse(cmd, args, response{
Code: codeBad,
Info: "want the query",
Log: "",
})
return nil
}
queryBytes, err := stringOrHexToBytes(args[0])
if err != nil {
return err
}
resQuery, err := client.Query(cmd.Context(), types.RequestQuery{
Data: queryBytes,
Path: flagPath,
Height: int64(flagHeight),
Prove: flagProve,
})
if err != nil {
return err
}
printResponse(cmd, args, response{
Code: resQuery.Code,
Info: resQuery.Info,
Log: resQuery.Log,
Query: &queryResponse{
Key: resQuery.Key,
Value: resQuery.Value,
Height: resQuery.Height,
ProofOps: resQuery.ProofOps,
},
})
return nil
}
func makeKVStoreCmd(logger log.Logger) func(*cobra.Command, []string) error {
return func(cmd *cobra.Command, args []string) error {
// Create the application - in memory or persisted to disk
var app types.Application
if flagPersist == "" {
app = kvstore.NewApplication()
} else {
app = kvstore.NewPersistentKVStoreApplication(logger, flagPersist)
}
// Start the listener
srv, err := server.NewServer(logger.With("module", "abci-server"), flagAddress, flagAbci, app)
if err != nil {
return err
}
ctx, cancel := signal.NotifyContext(cmd.Context(), syscall.SIGTERM)
defer cancel()
if err := srv.Start(ctx); err != nil {
return err
}
// Run forever.
<-ctx.Done()
return nil
}
}
//--------------------------------------------------------------------------------
func printResponse(cmd *cobra.Command, args []string, rsp response) {
if flagVerbose {
fmt.Println(">", cmd.Use, strings.Join(args, " "))
}
// Always print the status code.
if rsp.Code == types.CodeTypeOK {
fmt.Printf("-> code: OK\n")
} else {
fmt.Printf("-> code: %d\n", rsp.Code)
}
if len(rsp.Data) != 0 {
// Do no print this line when using the commit command
// because the string comes out as gibberish
if cmd.Use != "commit" {
fmt.Printf("-> data: %s\n", rsp.Data)
}
fmt.Printf("-> data.hex: 0x%X\n", rsp.Data)
}
if rsp.Log != "" {
fmt.Printf("-> log: %s\n", rsp.Log)
}
if rsp.Query != nil {
fmt.Printf("-> height: %d\n", rsp.Query.Height)
if rsp.Query.Key != nil {
fmt.Printf("-> key: %s\n", rsp.Query.Key)
fmt.Printf("-> key.hex: %X\n", rsp.Query.Key)
}
if rsp.Query.Value != nil {
fmt.Printf("-> value: %s\n", rsp.Query.Value)
fmt.Printf("-> value.hex: %X\n", rsp.Query.Value)
}
if rsp.Query.ProofOps != nil {
fmt.Printf("-> proof: %#v\n", rsp.Query.ProofOps)
}
}
}
// NOTE: s is interpreted as a string unless prefixed with 0x
func stringOrHexToBytes(s string) ([]byte, error) {
if len(s) > 2 && strings.ToLower(s[:2]) == "0x" {
b, err := hex.DecodeString(s[2:])
if err != nil {
err = fmt.Errorf("error decoding hex argument: %s", err.Error())
return nil, err
}
return b, nil
}
if !strings.HasPrefix(s, "\"") || !strings.HasSuffix(s, "\"") {
err := fmt.Errorf("invalid string arg: \"%s\". Must be quoted or a \"0x\"-prefixed hex string", s)
return nil, err
}
return []byte(s[1 : len(s)-1]), nil
}