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consolecmd.go
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consolecmd.go
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// Copyright (c) 2018 The MATRIX Authors
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php
package main
import (
"fmt"
"os"
"os/signal"
"path/filepath"
"strings"
"syscall"
"github.com/MatrixAINetwork/go-matrix/console"
"github.com/MatrixAINetwork/go-matrix/pod"
"github.com/MatrixAINetwork/go-matrix/rpc"
"github.com/MatrixAINetwork/go-matrix/run/utils"
"gopkg.in/urfave/cli.v1"
)
var (
consoleFlags = []cli.Flag{utils.JSpathFlag, utils.ExecFlag, utils.PreloadJSFlag}
consoleCommand = cli.Command{
Action: utils.MigrateFlags(localConsole),
Name: "console",
Usage: "Start an interactive JavaScript environment",
Flags: append(append(nodeFlags, rpcFlags...), consoleFlags...),
Category: "CONSOLE COMMANDS",
Description: `
The Gman console is an interactive shell for the JavaScript runtime environment
which exposes a node admin interface as well as the Ðapp JavaScript API.
See https://github.com/MatrixAINetwork/go-matrix/wiki/JavaScript-Console.`,
}
attachCommand = cli.Command{
Action: utils.MigrateFlags(remoteConsole),
Name: "attach",
Usage: "Start an interactive JavaScript environment (connect to node)",
ArgsUsage: "[endpoint]",
Flags: append(consoleFlags, utils.DataDirFlag),
Category: "CONSOLE COMMANDS",
Description: `
The Gman console is an interactive shell for the JavaScript runtime environment
which exposes a node admin interface as well as the Ðapp JavaScript API.
See https://github.com/MatrixAINetwork/go-matrix/wiki/JavaScript-Console.
This command allows to open a console on a running gman node.`,
}
javascriptCommand = cli.Command{
Action: utils.MigrateFlags(ephemeralConsole),
Name: "js",
Usage: "Execute the specified JavaScript files",
ArgsUsage: "<jsfile> [jsfile...]",
Flags: append(nodeFlags, consoleFlags...),
Category: "CONSOLE COMMANDS",
Description: `
The JavaScript VM exposes a node admin interface as well as the Ðapp
JavaScript API. See https://github.com/MatrixAINetwork/go-matrix/wiki/JavaScript-Console`,
}
)
// localConsole starts a new gman node, attaching a JavaScript console to it at the
// same time.
func localConsole(ctx *cli.Context) error {
// Create and start the node based on the CLI flags
node := makeFullNode(ctx)
startNode(ctx, node)
//node := TestBCHeaderGen_headerGenMsgHandle444()
defer node.Stop()
// Attach to the newly started node and start the JavaScript console
client, err := node.Attach()
if err != nil {
utils.Fatalf("Failed to attach to the inproc gman: %v", err)
}
config := console.Config{
DataDir: utils.MakeDataDir(ctx),
DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
Client: client,
Preload: utils.MakeConsolePreloads(ctx),
}
console, err := console.New(config)
if err != nil {
utils.Fatalf("Failed to start the JavaScript console: %v", err)
}
defer console.Stop(false)
// If only a short execution was requested, evaluate and return
if script := ctx.GlobalString(utils.ExecFlag.Name); script != "" {
console.Evaluate(script)
return nil
}
// Otherwise print the welcome screen and enter interactive mode
console.Welcome()
console.Interactive()
return nil
}
// remoteConsole will connect to a remote gman instance, attaching a JavaScript
// console to it.
func remoteConsole(ctx *cli.Context) error {
// Attach to a remotely running gman instance and start the JavaScript console
endpoint := ctx.Args().First()
if endpoint == "" {
path := pod.DefaultDataDir()
if ctx.GlobalIsSet(utils.DataDirFlag.Name) {
path = ctx.GlobalString(utils.DataDirFlag.Name)
}
if path != "" {
if ctx.GlobalBool(utils.TestnetFlag.Name) {
path = filepath.Join(path, "testnet")
} else if ctx.GlobalBool(utils.RinkebyFlag.Name) {
path = filepath.Join(path, "rinkeby")
}
}
endpoint = fmt.Sprintf("%s/gman.ipc", path)
}
client, err := dialRPC(endpoint)
if err != nil {
utils.Fatalf("Unable to attach to remote gman: %v", err)
}
config := console.Config{
DataDir: utils.MakeDataDir(ctx),
DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
Client: client,
Preload: utils.MakeConsolePreloads(ctx),
}
console, err := console.New(config)
if err != nil {
utils.Fatalf("Failed to start the JavaScript console: %v", err)
}
defer console.Stop(false)
if script := ctx.GlobalString(utils.ExecFlag.Name); script != "" {
console.Evaluate(script)
return nil
}
// Otherwise print the welcome screen and enter interactive mode
console.Welcome()
console.Interactive()
return nil
}
// dialRPC returns a RPC client which connects to the given endpoint.
// The check for empty endpoint implements the defaulting logic
// for "gman attach" and "gman monitor" with no argument.
func dialRPC(endpoint string) (*rpc.Client, error) {
if endpoint == "" {
endpoint = pod.DefaultIPCEndpoint(clientIdentifier)
} else if strings.HasPrefix(endpoint, "rpc:") || strings.HasPrefix(endpoint, "ipc:") {
// Backwards compatibility with gman < 1.5 which required
// these prefixes.
endpoint = endpoint[4:]
}
return rpc.Dial(endpoint)
}
// ephemeralConsole starts a new gman node, attaches an ephemeral JavaScript
// console to it, executes each of the files specified as arguments and tears
// everything down.
func ephemeralConsole(ctx *cli.Context) error {
// Create and start the node based on the CLI flags
node := makeFullNode(ctx)
startNode(ctx, node)
defer node.Stop()
// Attach to the newly started node and start the JavaScript console
client, err := node.Attach()
if err != nil {
utils.Fatalf("Failed to attach to the inproc gman: %v", err)
}
config := console.Config{
DataDir: utils.MakeDataDir(ctx),
DocRoot: ctx.GlobalString(utils.JSpathFlag.Name),
Client: client,
Preload: utils.MakeConsolePreloads(ctx),
}
console, err := console.New(config)
if err != nil {
utils.Fatalf("Failed to start the JavaScript console: %v", err)
}
defer console.Stop(false)
// Evaluate each of the specified JavaScript files
for _, file := range ctx.Args() {
if err = console.Execute(file); err != nil {
utils.Fatalf("Failed to execute %s: %v", file, err)
}
}
// Wait for pending callbacks, but stop for Ctrl-C.
abort := make(chan os.Signal, 1)
signal.Notify(abort, syscall.SIGINT, syscall.SIGTERM)
go func() {
<-abort
os.Exit(0)
}()
console.Stop(true)
return nil
}