mirror of
https://gitlab.com/pulsechaincom/go-pulse.git
synced 2024-12-25 12:57:17 +00:00
fbdb44dcc1
There are a bunch of changes required to make this work: - in miner: allow unregistering agents, fix RemoteAgent.Stop - in eth/filters: make FilterSystem.Stop not crash - in rpc/comms: move listen loop to platform-independent code Fixes #1930. I ran the shell loop there for a few minutes and didn't see any changes in the memory profile.
139 lines
3.3 KiB
Go
139 lines
3.3 KiB
Go
// Copyright 2015 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 comms
|
|
|
|
import (
|
|
"fmt"
|
|
"math/rand"
|
|
"net"
|
|
"os"
|
|
|
|
"encoding/json"
|
|
|
|
"github.com/ethereum/go-ethereum/logger"
|
|
"github.com/ethereum/go-ethereum/logger/glog"
|
|
"github.com/ethereum/go-ethereum/rpc/codec"
|
|
"github.com/ethereum/go-ethereum/rpc/shared"
|
|
)
|
|
|
|
type Stopper interface {
|
|
Stop()
|
|
}
|
|
|
|
type InitFunc func(conn net.Conn) (Stopper, shared.EthereumApi, error)
|
|
|
|
type IpcConfig struct {
|
|
Endpoint string
|
|
}
|
|
|
|
type ipcClient struct {
|
|
endpoint string
|
|
c net.Conn
|
|
codec codec.Codec
|
|
coder codec.ApiCoder
|
|
}
|
|
|
|
func (self *ipcClient) Close() {
|
|
self.coder.Close()
|
|
}
|
|
|
|
func (self *ipcClient) Send(msg interface{}) error {
|
|
var err error
|
|
if err = self.coder.WriteResponse(msg); err != nil {
|
|
if err = self.reconnect(); err == nil {
|
|
err = self.coder.WriteResponse(msg)
|
|
}
|
|
}
|
|
return err
|
|
}
|
|
|
|
func (self *ipcClient) Recv() (interface{}, error) {
|
|
return self.coder.ReadResponse()
|
|
}
|
|
|
|
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
|
|
func NewIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
|
|
return newIpcClient(cfg, codec)
|
|
}
|
|
|
|
// Start IPC server
|
|
func StartIpc(cfg IpcConfig, codec codec.Codec, initializer InitFunc) error {
|
|
l, err := ipcListen(cfg)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
go ipcLoop(cfg, codec, initializer, l)
|
|
return nil
|
|
}
|
|
|
|
func ipcLoop(cfg IpcConfig, codec codec.Codec, initializer InitFunc, l net.Listener) {
|
|
glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)
|
|
defer os.Remove(cfg.Endpoint)
|
|
defer l.Close()
|
|
for {
|
|
conn, err := l.Accept()
|
|
if err != nil {
|
|
glog.V(logger.Debug).Infof("accept: %v", err)
|
|
return
|
|
}
|
|
id := newIpcConnId()
|
|
go func() {
|
|
defer conn.Close()
|
|
glog.V(logger.Debug).Infof("new connection with id %06d started", id)
|
|
stopper, api, err := initializer(conn)
|
|
if err != nil {
|
|
glog.V(logger.Error).Infof("Unable to initialize IPC connection: %v", err)
|
|
return
|
|
}
|
|
defer stopper.Stop()
|
|
handle(id, conn, api, codec)
|
|
}()
|
|
}
|
|
}
|
|
|
|
func newIpcConnId() int {
|
|
return rand.Int() % 1000000
|
|
}
|