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cmd/utils, rpc/comms: stop XEth when IPC connection ends

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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.
This commit is contained in:
Felix Lange
2015-10-29 13:28:00 +01:00
parent 56f8699a6c
commit fbdb44dcc1
9 changed files with 129 additions and 159 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
rpc/comms/ipc.go
View File

@ -20,13 +20,22 @@ 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
}
@ -90,8 +99,38 @@ func NewIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
}
// Start IPC server
func StartIpc(cfg IpcConfig, codec codec.Codec, initializer func(conn net.Conn) (shared.EthereumApi, error)) error {
return startIpc(cfg, codec, initializer)
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 {

40
rpc/comms/ipc_unix.go
View File

@ -23,8 +23,6 @@ import (
"os"
"path/filepath"
"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"
"github.com/ethereum/go-ethereum/rpc/useragent"
@ -69,44 +67,16 @@ func (self *ipcClient) reconnect() error {
return err
}
func startIpc(cfg IpcConfig, codec codec.Codec, initializer func(conn net.Conn) (shared.EthereumApi, error)) error {
func ipcListen(cfg IpcConfig) (net.Listener, error) {
// Ensure the IPC path exists and remove any previous leftover
if err := os.MkdirAll(filepath.Dir(cfg.Endpoint), 0751); err != nil {
return err
return nil, err
}
os.Remove(cfg.Endpoint)
l, err := net.ListenUnix("unix", &net.UnixAddr{Name: cfg.Endpoint, Net: "unix"})
l, err := net.Listen("unix", cfg.Endpoint)
if err != nil {
return err
return nil, err
}
os.Chmod(cfg.Endpoint, 0600)
go func() {
for {
conn, err := l.AcceptUnix()
if err != nil {
glog.V(logger.Error).Infof("Error accepting ipc connection - %v\n", err)
continue
}
id := newIpcConnId()
glog.V(logger.Debug).Infof("New IPC connection with id %06d started\n", id)
api, err := initializer(conn)
if err != nil {
glog.V(logger.Error).Infof("Unable to initialize IPC connection - %v\n", err)
conn.Close()
continue
}
go handle(id, conn, api, codec)
}
os.Remove(cfg.Endpoint)
}()
glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)
return nil
return l, nil
}

36
rpc/comms/ipc_windows.go
View File

@ -28,8 +28,6 @@ import (
"time"
"unsafe"
"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"
"github.com/ethereum/go-ethereum/rpc/useragent"
@ -688,40 +686,12 @@ func (self *ipcClient) reconnect() error {
return err
}
func startIpc(cfg IpcConfig, codec codec.Codec, initializer func(conn net.Conn) (shared.EthereumApi, error)) error {
func ipcListen(cfg IpcConfig) (net.Listener, error) {
os.Remove(cfg.Endpoint) // in case it still exists from a previous run
l, err := Listen(cfg.Endpoint)
if err != nil {
return err
return nil, err
}
os.Chmod(cfg.Endpoint, 0600)
go func() {
for {
conn, err := l.Accept()
if err != nil {
glog.V(logger.Error).Infof("Error accepting ipc connection - %v\n", err)
continue
}
id := newIpcConnId()
glog.V(logger.Debug).Infof("New IPC connection with id %06d started\n", id)
api, err := initializer(conn)
if err != nil {
glog.V(logger.Error).Infof("Unable to initialize IPC connection - %v\n", err)
conn.Close()
continue
}
go handle(id, conn, api, codec)
}
os.Remove(cfg.Endpoint)
}()
glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)
return nil
return l, nil
}