cerc-io/plugeth
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added attach over ipc command

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This commit is contained in:
Bas van Kervel 2015-06-18 18:23:13 +02:00
parent 36a6b16a3b
commit f202563777
8 changed files with 238 additions and 35 deletions
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85
cmd/geth/js.go
View File

@ -26,6 +26,8 @@ import (
"path/filepath"
"strings"
"sort"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/docserver"
@ -36,7 +38,6 @@ import (
"github.com/ethereum/go-ethereum/rpc/api"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/comms"
"github.com/ethereum/go-ethereum/rpc/shared"
"github.com/ethereum/go-ethereum/xeth"
"github.com/peterh/liner"
"github.com/robertkrimen/otto"
@ -137,6 +138,40 @@ func apiWordCompleter(line string, pos int) (head string, completions []string,
return begin, completionWords, end
}
func newLightweightJSRE(libPath string, client comms.EthereumClient, interactive bool, f xeth.Frontend) *jsre {
js := &jsre{ps1: "> "}
js.wait = make(chan *big.Int)
js.client = client
if f == nil {
f = js
}
// update state in separare forever blocks
js.re = re.New(libPath)
if err := js.apiBindings(f); err != nil {
utils.Fatalf("Unable to initialize console - %v", err)
}
if !liner.TerminalSupported() || !interactive {
js.prompter = dumbterm{bufio.NewReader(os.Stdin)}
} else {
lr := liner.NewLiner()
//js.withHistory(func(hist *os.File) { lr.ReadHistory(hist) })
lr.SetCtrlCAborts(true)
js.loadAutoCompletion()
lr.SetWordCompleter(apiWordCompleter)
lr.SetTabCompletionStyle(liner.TabPrints)
js.prompter = lr
js.atexit = func() {
js.withHistory(func(hist *os.File) { hist.Truncate(0); lr.WriteHistory(hist) })
lr.Close()
close(js.wait)
}
}
return js
}
func newJSRE(ethereum *eth.Ethereum, libPath, corsDomain string, client comms.EthereumClient, interactive bool, f xeth.Frontend) *jsre {
js := &jsre{ethereum: ethereum, ps1: "> "}
// set default cors domain used by startRpc from CLI flag
@ -177,7 +212,7 @@ func newJSRE(ethereum *eth.Ethereum, libPath, corsDomain string, client comms.Et
}
func (self *jsre) loadAutoCompletion() {
if modules, err := self.suportedApis(); err == nil {
if modules, err := self.supportedApis(); err == nil {
loadedModulesMethods = make(map[string][]string)
for module, _ := range modules {
loadedModulesMethods[module] = api.AutoCompletion[module]
@ -185,34 +220,33 @@ func (self *jsre) loadAutoCompletion() {
}
}
func (self *jsre) suportedApis() (map[string]string, error) {
req := shared.Request{
Id: 1,
Jsonrpc: "2.0",
Method: "modules",
}
// show summary of current geth instance
func (self *jsre) welcome() {
self.re.Eval(`console.log('instance: ' + web3.version.client);`)
self.re.Eval(`console.log(' datadir: ' + admin.datadir);`)
self.re.Eval(`console.log("coinbase: " + eth.coinbase);`)
self.re.Eval(`var lastBlockTimestamp = 1000 * eth.getBlock(eth.blockNumber).timestamp`)
self.re.Eval(`console.log("at block: " + eth.blockNumber + " (" + new Date(lastBlockTimestamp).toLocaleDateString()
+ " " + new Date(lastBlockTimestamp).toLocaleTimeString() + ")");`)
err := self.client.Send(&req)
if err != nil {
return nil, err
if modules, err := self.supportedApis(); err == nil {
loadedModules := make([]string, 0)
for api, version := range modules {
loadedModules = append(loadedModules, fmt.Sprintf("%s:%s", api, version))
}
sort.Strings(loadedModules)
res, err := self.client.Recv()
if err != nil {
return nil, err
self.re.Eval(fmt.Sprintf("var modules = '%s';", strings.Join(loadedModules, " ")))
self.re.Eval(`console.log(" modules: " + modules);`)
}
}
if sucRes, ok := res.(map[string]string); ok {
if err == nil {
return sucRes, nil
}
}
return nil, fmt.Errorf("Unable to determine supported API's")
func (self *jsre) supportedApis() (map[string]string, error) {
return self.client.SupportedModules()
}
func (js *jsre) apiBindings(f xeth.Frontend) error {
apis, err := js.suportedApis()
apis, err := js.supportedApis()
if err != nil {
return err
}
@ -366,7 +400,12 @@ func (self *jsre) interactive() {
}
func (self *jsre) withHistory(op func(*os.File)) {
hist, err := os.OpenFile(filepath.Join(self.ethereum.DataDir, "history"), os.O_RDWR|os.O_CREATE, os.ModePerm)
datadir := common.DefaultDataDir()
if self.ethereum != nil {
datadir = self.ethereum.DataDir
}
hist, err := os.OpenFile(filepath.Join(datadir, "history"), os.O_RDWR|os.O_CREATE, os.ModePerm)
if err != nil {
fmt.Printf("unable to open history file: %v\n", err)
return

46
cmd/geth/main.go
View File

@ -204,6 +204,16 @@ nodes.
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`,
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.
`,
},
{
@ -297,6 +307,40 @@ func run(ctx *cli.Context) {
ethereum.WaitForShutdown()
}
func attach(ctx *cli.Context) {
// Wrap the standard output with a colorified stream (windows)
if isatty.IsTerminal(os.Stdout.Fd()) {
if pr, pw, err := os.Pipe(); err == nil {
go io.Copy(colorable.NewColorableStdout(), pr)
os.Stdout = pw
}
}
var client comms.EthereumClient
var err error
if ctx.Args().Present() {
client, err = comms.ClientFromEndpoint(ctx.Args().First(), codec.JSON)
} else {
cfg := comms.IpcConfig{
Endpoint: ctx.GlobalString(utils.IPCPathFlag.Name),
}
client, err = comms.NewIpcClient(cfg, codec.JSON)
}
if err != nil {
utils.Fatalf("Unable to attach to geth node - %v", err)
}
repl := newLightweightJSRE(
ctx.String(utils.JSpathFlag.Name),
client,
true,
nil)
repl.welcome()
repl.interactive()
}
func console(ctx *cli.Context) {
// Wrap the standard output with a colorified stream (windows)
if isatty.IsTerminal(os.Stdout.Fd()) {
@ -323,6 +367,8 @@ func console(ctx *cli.Context) {
true,
nil,
)
repl.welcome()
repl.interactive()
ethereum.Stop()

25
rpc/comms/comms.go
View File

@ -4,12 +4,14 @@ import (
"io"
"net"
"fmt"
"strings"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/rpc/api"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/shared"
"strings"
)
const (
@ -36,6 +38,8 @@ type EthereumClient interface {
Send(interface{}) error
// Receive response
Recv() (interface{}, error)
// List with modules this client supports
SupportedModules() (map[string]string, error)
}
func handle(conn net.Conn, api api.EthereumApi, c codec.Codec) {
@ -64,3 +68,22 @@ func handle(conn net.Conn, api api.EthereumApi, c codec.Codec) {
}
}
}
// Endpoint must be in the form of:
// ${protocol}:${path}
// e.g. ipc:/tmp/geth.ipc
// rpc:localhost:8545
func ClientFromEndpoint(endpoint string, c codec.Codec) (EthereumClient, error) {
if strings.HasPrefix(endpoint, "ipc:") {
cfg := IpcConfig{
Endpoint: endpoint[4:],
}
return NewIpcClient(cfg, codec.JSON)
}
if strings.HasPrefix(endpoint, "rpc:") {
}
return nil, fmt.Errorf("Invalid endpoint")
}

1
rpc/comms/http.go
View File

@ -64,7 +64,6 @@ func StopHttp() {
}
}
type httpClient struct {
codec codec.ApiCoder
}

18
rpc/comms/inproc.go
View File

@ -51,3 +51,21 @@ func (self *InProcClient) Send(req interface{}) error {
func (self *InProcClient) Recv() (interface{}, error) {
return self.lastRes, self.lastErr
}
func (self *InProcClient) SupportedModules() (map[string]string, error) {
req := shared.Request{
Id: 1,
Jsonrpc: "2.0",
Method: "modules",
}
if res, err := self.api.Execute(&req); err == nil {
if result, ok := res.(map[string]string); ok {
return result, nil
}
} else {
return nil, err
}
return nil, fmt.Errorf("Invalid response")
}

68
rpc/comms/ipc.go
View File

@ -1,8 +1,13 @@
package comms
import (
"fmt"
"net"
"github.com/ethereum/go-ethereum/rpc/api"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/shared"
"encoding/json"
)
type IpcConfig struct {
@ -10,19 +15,74 @@ type IpcConfig struct {
}
type ipcClient struct {
codec codec.ApiCoder
endpoint string
codec codec.Codec
coder codec.ApiCoder
}
func (self *ipcClient) Close() {
self.codec.Close()
self.coder.Close()
}
func (self *ipcClient) Send(req interface{}) error {
return self.codec.WriteResponse(req)
var err error
if r, ok := req.(*shared.Request); ok {
if err = self.coder.WriteResponse(r); err != nil {
if _, ok := err.(*net.OpError); ok { // connection lost, retry once
if err = self.reconnect(); err == nil {
err = self.coder.WriteResponse(r)
}
}
}
return err
}
return fmt.Errorf("Invalid request (%T)", req)
}
func (self *ipcClient) Recv() (interface{}, error) {
return self.codec.ReadResponse()
res, err := self.coder.ReadResponse()
if err != nil {
return nil, err
}
if r, ok := res.(shared.SuccessResponse); ok {
return r.Result, nil
}
if r, ok := res.(shared.ErrorResponse); ok {
return r.Error, nil
}
return res, err
}
func (self *ipcClient) SupportedModules() (map[string]string, error) {
req := shared.Request{
Id: 1,
Jsonrpc: "2.0",
Method: "modules",
}
if err := self.coder.WriteResponse(req); err != nil {
return nil, err
}
res, err := self.coder.ReadResponse()
if err != nil {
return nil, err
}
if sucRes, ok := res.(shared.SuccessResponse); ok {
data, _ := json.Marshal(sucRes.Result)
modules := make(map[string]string)
err = json.Unmarshal(data, &modules)
if err == nil {
return modules, nil
}
}
return nil, fmt.Errorf("Invalid response")
}
// Create a new IPC client, UNIX domain socket on posix, named pipe on Windows

12
rpc/comms/ipc_unix.go
View File

@ -18,7 +18,17 @@ func newIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
return nil, err
}
return &ipcClient{codec.New(c)}, nil
return &ipcClient{cfg.Endpoint, codec, codec.New(c)}, nil
}
func (self *ipcClient) reconnect() error {
self.coder.Close()
c, err := net.DialUnix("unix", nil, &net.UnixAddr{self.endpoint, "unix"})
if err == nil {
self.coder = self.codec.New(c)
}
return err
}
func startIpc(cfg IpcConfig, codec codec.Codec, api api.EthereumApi) error {

10
rpc/comms/ipc_windows.go
View File

@ -641,7 +641,15 @@ func newIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
return nil, err
}
return &ipcClient{codec.New(c)}, nil
return &ipcClient{cfg.Endpoint, codec, codec.New(c)}, nil
}
func (self *ipcClient) reconnect() error {
c, err := Dial(self.endpoint)
if err == nil {
self.coder = self.codec.New(c)
}
return err
}
func startIpc(cfg IpcConfig, codec codec.Codec, api api.EthereumApi) error {