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cmd, node, rpc: readd inproc RPC client, expose via node

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This commit is contained in:
Péter Szilágyi 2016-02-09 14:10:40 +02:00
parent 900e124bee
commit df75dbfd68
11 changed files with 178 additions and 25 deletions
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6
cmd/geth/js_test.go
View File

@ -20,7 +20,6 @@ import (
"fmt"
"io/ioutil"
"math/big"
"math/rand"
"os"
"path/filepath"
"regexp"
@ -30,7 +29,6 @@ import (
"time"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/compiler"
"github.com/ethereum/go-ethereum/common/httpclient"
@ -96,7 +94,7 @@ func testREPL(t *testing.T, config func(*eth.Config)) (string, *testjethre, *nod
t.Fatal(err)
}
// Create a networkless protocol stack
stack, err := node.New(&node.Config{PrivateKey: testNodeKey, Name: "test", NoDiscovery: true, IPCPath: fmt.Sprintf("geth-test-%d.ipc", rand.Int63())})
stack, err := node.New(&node.Config{PrivateKey: testNodeKey, Name: "test", NoDiscovery: true})
if err != nil {
t.Fatalf("failed to create node: %v", err)
}
@ -142,7 +140,7 @@ func testREPL(t *testing.T, config func(*eth.Config)) (string, *testjethre, *nod
stack.Service(&ethereum)
assetPath := filepath.Join(os.Getenv("GOPATH"), "src", "github.com", "ethereum", "go-ethereum", "cmd", "mist", "assets", "ext")
client, err := utils.NewRemoteRPCClientFromString("ipc:" + stack.IPCEndpoint())
client, err := stack.Attach()
if err != nil {
t.Fatalf("failed to attach to node: %v", err)
}

4
cmd/geth/main.go
View File

@ -425,7 +425,7 @@ func console(ctx *cli.Context) {
startNode(ctx, node)
// Attach to the newly started node, and either execute script or become interactive
client, err := utils.NewRemoteRPCClientFromString("ipc:" + node.IPCEndpoint())
client, err := node.Attach()
if err != nil {
utils.Fatalf("Failed to attach to the inproc geth: %v", err)
}
@ -451,7 +451,7 @@ func execScripts(ctx *cli.Context) {
startNode(ctx, node)
// Attach to the newly started node and execute the given scripts
client, err := utils.NewRemoteRPCClientFromString("ipc:" + node.IPCEndpoint())
client, err := node.Attach()
if err != nil {
utils.Fatalf("Failed to attach to the inproc geth: %v", err)
}

1
cmd/utils/client.go
View File

@ -51,6 +51,5 @@ func NewRemoteRPCClientFromString(endpoint string) (rpc.Client, error) {
if strings.HasPrefix(endpoint, "ws:") {
return rpc.NewWSClient(endpoint)
}
return nil, fmt.Errorf("invalid endpoint")
}

2
node/api.go
View File

@ -89,7 +89,7 @@ func (api *PrivateAdminAPI) StartWS(host string, port int, cors string, apis str
defer api.node.lock.Unlock()
if api.node.wsHandler != nil {
return false, fmt.Errorf("WebSocker RPC already running on %s", api.node.wsEndpoint)
return false, fmt.Errorf("WebSocket RPC already running on %s", api.node.wsEndpoint)
}
if err := api.node.startWS(fmt.Sprintf("%s:%d", host, port), api.node.rpcAPIs, strings.Split(apis, ","), cors); err != nil {
return false, err

55
node/node.go
View File

@ -55,7 +55,9 @@ type Node struct {
serviceFuncs []ServiceConstructor // Service constructors (in dependency order)
services map[reflect.Type]Service // Currently running services
rpcAPIs []rpc.API // List of APIs currently provided by the node
rpcAPIs []rpc.API // List of APIs currently provided by the node
inprocHandler *rpc.Server // In-process RPC request handler to process the API requests
ipcEndpoint string // IPC endpoint to listen at (empty = IPC disabled)
ipcListener net.Listener // IPC RPC listener socket to serve API requests
ipcHandler *rpc.Server // IPC RPC request handler to process the API requests
@ -217,16 +219,22 @@ func (n *Node) startRPC(services map[reflect.Type]Service) error {
apis = append(apis, service.APIs()...)
}
// Start the various API endpoints, terminating all in case of errors
if err := n.startInProc(apis); err != nil {
return err
}
if err := n.startIPC(apis); err != nil {
n.stopInProc()
return err
}
if err := n.startHTTP(n.httpEndpoint, apis, n.httpWhitelist, n.httpCors); err != nil {
n.stopIPC()
n.stopInProc()
return err
}
if err := n.startWS(n.wsEndpoint, apis, n.wsWhitelist, n.wsDomains); err != nil {
n.stopHTTP()
n.stopIPC()
n.stopInProc()
return err
}
// All API endpoints started successfully
@ -234,6 +242,28 @@ func (n *Node) startRPC(services map[reflect.Type]Service) error {
return nil
}
// startInProc initializes an in-process RPC endpoint.
func (n *Node) startInProc(apis []rpc.API) error {
// Register all the APIs exposed by the services
handler := rpc.NewServer()
for _, api := range apis {
if err := handler.RegisterName(api.Namespace, api.Service); err != nil {
return err
}
glog.V(logger.Debug).Infof("InProc registered %T under '%s'", api.Service, api.Namespace)
}
n.inprocHandler = handler
return nil
}
// stopInProc terminates the in-process RPC endpoint.
func (n *Node) stopInProc() {
if n.inprocHandler != nil {
n.inprocHandler.Stop()
n.inprocHandler = nil
}
}
// startIPC initializes and starts the IPC RPC endpoint.
func (n *Node) startIPC(apis []rpc.API) error {
// Short circuit if the IPC endpoint isn't being exposed
@ -468,6 +498,19 @@ func (n *Node) Restart() error {
return nil
}
// Attach creates an RPC client attached to an in-process API handler.
func (n *Node) Attach() (rpc.Client, error) {
n.lock.RLock()
defer n.lock.RUnlock()
// Short circuit if the node's not running
if n.server == nil {
return nil, ErrNodeStopped
}
// Otherwise attach to the API and return
return rpc.NewInProcRPCClient(n.inprocHandler), nil
}
// Server retrieves the currently running P2P network layer. This method is meant
// only to inspect fields of the currently running server, life cycle management
// should be left to this Node entity.
@ -506,6 +549,16 @@ func (n *Node) IPCEndpoint() string {
return n.ipcEndpoint
}
// HTTPEndpoint retrieves the current HTTP endpoint used by the protocol stack.
func (n *Node) HTTPEndpoint() string {
return n.httpEndpoint
}
// WSEndpoint retrieves the current WS endpoint used by the protocol stack.
func (n *Node) WSEndpoint() string {
return n.wsEndpoint
}
// EventMux retrieves the event multiplexer used by all the network services in
// the current protocol stack.
func (n *Node) EventMux() *event.TypeMux {

12
node/node_test.go
View File

@ -18,9 +18,7 @@ package node
import (
"errors"
"fmt"
"io/ioutil"
"math/rand"
"os"
"reflect"
"testing"
@ -37,7 +35,6 @@ var (
func testNodeConfig() *Config {
return &Config{
IPCPath: fmt.Sprintf("test-%d.ipc", rand.Int63()),
PrivateKey: testNodeKey,
Name: "test node",
}
@ -541,10 +538,11 @@ func TestAPIGather(t *testing.T) {
defer stack.Stop()
// Connect to the RPC server and verify the various registered endpoints
ipcClient, err := rpc.NewIPCClient(stack.IPCEndpoint())
client, err := stack.Attach()
if err != nil {
t.Fatalf("failed to connect to the IPC API server: %v", err)
t.Fatalf("failed to connect to the inproc API server: %v", err)
}
defer client.Close()
tests := []struct {
Method string
@ -556,11 +554,11 @@ func TestAPIGather(t *testing.T) {
{"multi.v2.nested_theOneMethod", "multi.v2.nested"},
}
for i, test := range tests {
if err := ipcClient.Send(rpc.JSONRequest{Id: new(int64), Version: "2.0", Method: test.Method}); err != nil {
if err := client.Send(rpc.JSONRequest{Id: new(int64), Version: "2.0", Method: test.Method}); err != nil {
t.Fatalf("test %d: failed to send API request: %v", i, err)
}
reply := new(rpc.JSONSuccessResponse)
if err := ipcClient.Recv(reply); err != nil {
if err := client.Recv(reply); err != nil {
t.Fatalf("test %d: failed to read API reply: %v", i, err)
}
select {

2
rpc/http.go
View File

@ -259,7 +259,7 @@ type httpClient struct {
// NewHTTPClient create a new RPC clients that connection to a geth RPC server
// over HTTP.
func NewHTTPClient(endpoint string) (*httpClient, error) {
func NewHTTPClient(endpoint string) (Client, error) {
url, err := url.Parse(endpoint)
if err != nil {
return nil, err

111
rpc/inproc.go Normal file
View File

@ -0,0 +1,111 @@
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package rpc
import "encoding/json"
// NewInProcRPCClient creates an in-process buffer stream attachment to a given
// RPC server.
func NewInProcRPCClient(handler *Server) Client {
buffer := &inprocBuffer{
requests: make(chan []byte, 16),
responses: make(chan []byte, 16),
}
client := &inProcClient{
server: handler,
buffer: buffer,
}
go handler.ServeCodec(NewJSONCodec(client.buffer))
return client
}
// inProcClient is an in-process buffer stream attached to an RPC server.
type inProcClient struct {
server *Server
buffer *inprocBuffer
}
// Close tears down the request channel of the in-proc client.
func (c *inProcClient) Close() {
c.buffer.Close()
}
// Send marshals a message into a json format and injects in into the client
// request channel.
func (c *inProcClient) Send(msg interface{}) error {
d, err := json.Marshal(msg)
if err != nil {
return err
}
c.buffer.requests <- d
return nil
}
// Recv reads a message from the response channel and tries to parse it into the
// given msg interface.
func (c *inProcClient) Recv(msg interface{}) error {
data := <-c.buffer.responses
return json.Unmarshal(data, &msg)
}
// Returns the collection of modules the RPC server offers.
func (c *inProcClient) SupportedModules() (map[string]string, error) {
return SupportedModules(c)
}
// inprocBuffer represents the connection between the RPC server and console
type inprocBuffer struct {
readBuf []byte // store remaining request bytes after a partial read
requests chan []byte // list with raw serialized requests
responses chan []byte // list with raw serialized responses
}
// Read will read the next request in json format.
func (b *inprocBuffer) Read(p []byte) (int, error) {
// last read didn't read entire request, return remaining bytes
if len(b.readBuf) > 0 {
n := copy(p, b.readBuf)
if n < len(b.readBuf) {
b.readBuf = b.readBuf[:n]
} else {
b.readBuf = b.readBuf[:0]
}
return n, nil
}
// read next request
req := <-b.requests
n := copy(p, req)
if n < len(req) {
// inprocBuffer too small, store remaining chunk for next read
b.readBuf = req[n:]
}
return n, nil
}
// Write sends the given buffer to the backend.
func (b *inprocBuffer) Write(p []byte) (n int, err error) {
b.responses <- p
return len(p), nil
}
// Close cleans up obtained resources.
func (b *inprocBuffer) Close() error {
close(b.requests)
close(b.responses)
return nil
}

2
rpc/ipc.go
View File

@ -38,7 +38,7 @@ type ipcClient struct {
// NewIPCClient create a new IPC client that will connect on the given endpoint. Messages are JSON encoded and encoded.
// On Unix it assumes the endpoint is the full path to a unix socket, and Windows the endpoint is an identifier for a
// named pipe.
func NewIPCClient(endpoint string) (*ipcClient, error) {
func NewIPCClient(endpoint string) (Client, error) {
conn, err := newIPCConnection(endpoint)
if err != nil {
return nil, err

6
rpc/ipc_windows.go
View File

@ -239,9 +239,6 @@ func Dial(address string) (*PipeConn, error) {
for {
conn, err := dial(address, nmpwait_wait_forever)
if err == nil {
// Ugly hack working around some async connectivity issues
time.Sleep(100 * time.Millisecond)
return conn, nil
}
if isPipeNotReady(err) {
@ -363,9 +360,6 @@ func Listen(address string) (*PipeListener, error) {
if err != nil {
return nil, err
}
// Ugly hack working around some async connectivity issues
time.Sleep(100 * time.Millisecond)
return &PipeListener{
addr: PipeAddr(address),
handle: handle,

2
rpc/websocket.go
View File

@ -109,7 +109,7 @@ type wsClient struct {
// NewWSClientj creates a new RPC client that communicates with a RPC server
// that is listening on the given endpoint using JSON encoding.
func NewWSClient(endpoint string) (*wsClient, error) {
func NewWSClient(endpoint string) (Client, error) {
return &wsClient{endpoint: endpoint}, nil
}