// execScripts starts a new geth node based on the CLI flags, and executes each
// of the JavaScript files specified as command arguments.
func execScripts(ctx *cli.Context) {
// Create and start the node based on the CLI flags
node := utils.MakeSystemNode(clientIdentifier, verString, relConfig, makeDefaultExtra(), ctx)
startNode(ctx, node)
defer node.Stop()
// Attach to the newly started node and execute the given scripts
client, err := node.Attach()
if err != nil {
utils.Fatalf("Failed to attach to the inproc geth: %v", err)
}
repl := newJSRE(node,
ctx.GlobalString(utils.JSpathFlag.Name),
ctx.GlobalString(utils.RPCCORSDomainFlag.Name),
client, false)
// Run all given files.
for _, file := range ctx.Args() {
if err = repl.re.Exec(file); err != nil {
break
}
}
if err != nil {
utils.Fatalf("JavaScript Error: %v", jsErrorString(err))
}
// JS files loaded successfully.
// Wait for pending callbacks, but stop for Ctrl-C.
abort := make(chan os.Signal, 1)
signal.Notify(abort, os.Interrupt)
go func() {
<-abort
repl.re.Stop(false)
}()
repl.re.Stop(true)
}
// console starts a new geth node, attaching a JavaScript console to it at the
// same time.
func console(ctx *cli.Context) {
// Create and start the node based on the CLI flags
node := utils.MakeSystemNode(clientIdentifier, verString, relConfig, makeDefaultExtra(), ctx)
startNode(ctx, node)
// Attach to the newly started node, and either execute script or become interactive
client, err := node.Attach()
if err != nil {
utils.Fatalf("Failed to attach to the inproc geth: %v", err)
}
repl := newJSRE(node,
ctx.GlobalString(utils.JSpathFlag.Name),
ctx.GlobalString(utils.RPCCORSDomainFlag.Name),
client, true)
// preload user defined JS files into the console
err = repl.preloadJSFiles(ctx)
if err != nil {
utils.Fatalf("%v", err)
}
// in case the exec flag holds a JS statement execute it and return
if script := ctx.GlobalString(utils.ExecFlag.Name); script != "" {
repl.batch(script)
} else {
repl.welcome()
repl.interactive()
}
node.Stop()
}
// localConsole starts a new geth 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 := utils.MakeSystemNode(clientIdentifier, verString, relConfig, makeDefaultExtra(), 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 geth: %v", err)
}
config := console.Config{
DataDir: node.DataDir(),
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
}
// geth is the main entry point into the system if no special subcommand is ran.
// It creates a default node based on the command line arguments and runs it in
// blocking mode, waiting for it to be shut down.
func geth(ctx *cli.Context) error {
node := utils.MakeSystemNode(clientIdentifier, verString, relConfig, makeDefaultExtra(), ctx)
startNode(ctx, node)
node.Wait()
return nil
}
// ephemeralConsole starts a new geth node, attaches an ephemeral JavaScript
// console to it, and each of the files specified as arguments and tears the
// everything down.
func ephemeralConsole(ctx *cli.Context) error {
// Create and start the node based on the CLI flags
node := utils.MakeSystemNode(clientIdentifier, verString, relConfig, makeDefaultExtra(), 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 geth: %v", err)
}
config := console.Config{
DataDir: node.DataDir(),
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, os.Interrupt)
go func() {
<-abort
os.Exit(0)
}()
console.Stop(true)
return nil
}