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[release/1.4.6] cmd, console: split off the console into a reusable package

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(cherry picked from commit ffaf58f0a9)
This commit is contained in:
Péter Szilágyi
2016-05-06 12:40:23 +03:00
parent af53767e16
commit c39de61a0a
26 changed files with 1548 additions and 1519 deletions
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140
cmd/geth/main.go
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@ -22,7 +22,6 @@ import (
"fmt"
"io/ioutil"
"os"
"os/signal"
"path/filepath"
"runtime"
"strconv"
@ -33,6 +32,7 @@ import (
"github.com/ethereum/ethash"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/console"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethdb"
@ -95,6 +95,9 @@ func init() {
monitorCommand,
accountCommand,
walletCommand,
consoleCommand,
attachCommand,
javascriptCommand,
{
Action: makedag,
Name: "makedag",
@ -138,36 +141,6 @@ The output of this command is supposed to be machine-readable.
The init command initialises a new genesis block and definition for the network.
This is a destructive action and changes the network in which you will be
participating.
`,
},
{
Action: console,
Name: "console",
Usage: `Geth Console: interactive JavaScript environment`,
Description: `
The Geth 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/ethereum/go-ethereum/wiki/Javascipt-Console
`,
},
{
Action: attach,
Name: "attach",
Usage: `Geth Console: interactive JavaScript environment (connect to node)`,
Description: `
The Geth 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/ethereum/go-ethereum/wiki/Javascipt-Console.
This command allows to open a console on a running geth node.
`,
},
{
Action: execScripts,
Name: "js",
Usage: `executes the given JavaScript files in the Geth JavaScript VM`,
Description: `
The JavaScript VM exposes a node admin interface as well as the Ðapp
JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Console
`,
},
}
@ -214,7 +187,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
utils.IPCApiFlag,
utils.IPCPathFlag,
utils.ExecFlag,
utils.PreLoadJSFlag,
utils.PreloadJSFlag,
utils.WhisperEnabledFlag,
utils.DevModeFlag,
utils.TestNetFlag,
@ -263,7 +236,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
app.After = func(ctx *cli.Context) error {
logger.Flush()
debug.Exit()
utils.Stdin.Close() // Resets terminal mode.
console.TerminalPrompter.Close() // Resets terminal mode.
return nil
}
}
@ -304,36 +277,6 @@ func geth(ctx *cli.Context) {
node.Wait()
}
// attach will connect to a running geth instance attaching a JavaScript console and to it.
func attach(ctx *cli.Context) {
// attach to a running geth instance
client, err := utils.NewRemoteRPCClient(ctx)
if err != nil {
utils.Fatalf("Unable to attach to geth: %v", err)
}
repl := newLightweightJSRE(
ctx.GlobalString(utils.JSpathFlag.Name),
client,
ctx.GlobalString(utils.DataDirFlag.Name),
true,
)
// preload user defined JS files into the console
err = repl.preloadJSFiles(ctx)
if err != nil {
utils.Fatalf("unable to preload JS file %v", err)
}
// in case the exec flag holds a JS statement execute it and return
if ctx.GlobalString(utils.ExecFlag.Name) != "" {
repl.batch(ctx.GlobalString(utils.ExecFlag.Name))
} else {
repl.welcome()
repl.interactive()
}
}
// initGenesis will initialise the given JSON format genesis file and writes it as
// the zero'd block (i.e. genesis) or will fail hard if it can't succeed.
func initGenesis(ctx *cli.Context) {
@ -359,77 +302,6 @@ func initGenesis(ctx *cli.Context) {
glog.V(logger.Info).Infof("successfully wrote genesis block and/or chain rule set: %x", block.Hash())
}
// 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()
}
// 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)
}
// startNode boots up the system node and all registered protocols, after which
// it unlocks any requested accounts, and starts the RPC/IPC interfaces and the
// miner.