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Merge pull request #1332 from bas-vk/ipcbatch

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IPC interface improvements
This commit is contained in:
Jeffrey Wilcke 2015-06-25 08:06:19 -07:00
commit e64625aa82
6 changed files with 130 additions and 62 deletions
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2
rpc/codec/codec.go
View File

@ -12,7 +12,7 @@ type Codec int
// (de)serialization support for rpc interface
type ApiCoder interface {
// Parse message to request from underlying stream
ReadRequest() (*shared.Request, error)
ReadRequest() ([]*shared.Request, bool, error)
// Parse response message from underlying stream
ReadResponse() (interface{}, error)
// Encode response to encoded form in underlying stream

99
rpc/codec/json.go
View File

@ -2,71 +2,130 @@ package codec
import (
"encoding/json"
"fmt"
"net"
"time"
"github.com/ethereum/go-ethereum/rpc/shared"
)
const (
MAX_RESPONSE_SIZE = 64 * 1024
READ_TIMEOUT = 15 // read timeout in seconds
MAX_REQUEST_SIZE = 1024 * 1024
MAX_RESPONSE_SIZE = 1024 * 1024
)
// Json serialization support
type JsonCodec struct {
c net.Conn
d *json.Decoder
e *json.Encoder
}
// Create new JSON coder instance
func NewJsonCoder(conn net.Conn) ApiCoder {
return &JsonCodec{
c: conn,
d: json.NewDecoder(conn),
e: json.NewEncoder(conn),
}
}
// Serialize obj to JSON and write it to conn
func (self *JsonCodec) ReadRequest() (*shared.Request, error) {
req := shared.Request{}
err := self.d.Decode(&req)
if err == nil {
return &req, nil
func (self *JsonCodec) ReadRequest() (requests []*shared.Request, isBatch bool, err error) {
bytesInBuffer := 0
buf := make([]byte, MAX_REQUEST_SIZE)
deadline := time.Now().Add(READ_TIMEOUT * time.Second)
if err := self.c.SetDeadline(deadline); err != nil {
return nil, false, err
}
return nil, err
for {
n, err := self.c.Read(buf[bytesInBuffer:])
if err != nil {
self.c.Close()
return nil, false, err
}
bytesInBuffer += n
singleRequest := shared.Request{}
err = json.Unmarshal(buf[:bytesInBuffer], &singleRequest)
if err == nil {
requests := make([]*shared.Request, 1)
requests[0] = &singleRequest
return requests, false, nil
}
requests = make([]*shared.Request, 0)
err = json.Unmarshal(buf[:bytesInBuffer], &requests)
if err == nil {
return requests, true, nil
}
}
self.c.Close() // timeout
return nil, false, fmt.Errorf("Unable to read response")
}
func (self *JsonCodec) ReadResponse() (interface{}, error) {
var err error
bytesInBuffer := 0
buf := make([]byte, MAX_RESPONSE_SIZE)
n, _ := self.c.Read(buf)
var failure shared.ErrorResponse
if err = json.Unmarshal(buf[:n], &failure); err == nil && failure.Error != nil {
return failure, nil
deadline := time.Now().Add(READ_TIMEOUT * time.Second)
if err := self.c.SetDeadline(deadline); err != nil {
return nil, err
}
for {
n, err := self.c.Read(buf[bytesInBuffer:])
if err != nil {
return nil, err
}
bytesInBuffer += n
var success shared.SuccessResponse
if err = json.Unmarshal(buf[:n], &success); err == nil {
if err = json.Unmarshal(buf[:bytesInBuffer], &success); err == nil {
return success, nil
}
return nil, err
var failure shared.ErrorResponse
if err = json.Unmarshal(buf[:bytesInBuffer], &failure); err == nil && failure.Error != nil {
return failure, nil
}
}
self.c.Close()
return nil, fmt.Errorf("Unable to read response")
}
// Encode response to encoded form in underlying stream
// Decode data
func (self *JsonCodec) Decode(data []byte, msg interface{}) error {
return json.Unmarshal(data, msg)
}
// Encode message
func (self *JsonCodec) Encode(msg interface{}) ([]byte, error) {
return json.Marshal(msg)
}
// Parse JSON data from conn to obj
func (self *JsonCodec) WriteResponse(res interface{}) error {
return self.e.Encode(&res)
data, err := json.Marshal(res)
if err != nil {
self.c.Close()
return err
}
bytesWritten := 0
for bytesWritten < len(data) {
n, err := self.c.Write(data[bytesWritten:])
if err != nil {
self.c.Close()
return err
}
bytesWritten += n
}
return nil
}
// Close decoder and encoder

32
rpc/comms/comms.go
View File

@ -43,31 +43,51 @@ type EthereumClient interface {
SupportedModules() (map[string]string, error)
}
func handle(conn net.Conn, api shared.EthereumApi, c codec.Codec) {
func handle(id int, conn net.Conn, api shared.EthereumApi, c codec.Codec) {
codec := c.New(conn)
for {
req, err := codec.ReadRequest()
requests, isBatch, err := codec.ReadRequest()
if err == io.EOF {
codec.Close()
return
} else if err != nil {
glog.V(logger.Error).Infof("comms recv err - %v\n", err)
codec.Close()
glog.V(logger.Debug).Infof("Closed IPC Conn %06d recv err - %v\n", id, err)
return
}
var rpcResponse interface{}
if isBatch {
responses := make([]*interface{}, len(requests))
responseCount := 0
for _, req := range requests {
res, err := api.Execute(req)
if req.Id != nil {
rpcResponse := shared.NewRpcResponse(req.Id, req.Jsonrpc, res, err)
responses[responseCount] = rpcResponse
responseCount += 1
}
}
rpcResponse = shared.NewRpcResponse(req.Id, req.Jsonrpc, res, err)
err = codec.WriteResponse(responses[:responseCount])
if err != nil {
codec.Close()
glog.V(logger.Debug).Infof("Closed IPC Conn %06d send err - %v\n", id, err)
return
}
} else {
var rpcResponse interface{}
res, err := api.Execute(requests[0])
rpcResponse = shared.NewRpcResponse(requests[0].Id, requests[0].Jsonrpc, res, err)
err = codec.WriteResponse(rpcResponse)
if err != nil {
glog.V(logger.Error).Infof("comms send err - %v\n", err)
codec.Close()
glog.V(logger.Debug).Infof("Closed IPC Conn %06d send err - %v\n", id, err)
return
}
}
}
}
// Endpoint must be in the form of:

6
rpc/comms/ipc.go
View File

@ -2,6 +2,7 @@ package comms
import (
"fmt"
"math/rand"
"net"
"encoding/json"
@ -16,6 +17,7 @@ type IpcConfig struct {
type ipcClient struct {
endpoint string
c net.Conn
codec codec.Codec
coder codec.ApiCoder
}
@ -94,3 +96,7 @@ func NewIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
func StartIpc(cfg IpcConfig, codec codec.Codec, offeredApi shared.EthereumApi) error {
return startIpc(cfg, codec, offeredApi)
}
func newIpcConnId() int {
return rand.Int() % 1000000
}

7
rpc/comms/ipc_unix.go
View File

@ -18,7 +18,7 @@ func newIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
return nil, err
}
return &ipcClient{cfg.Endpoint, codec, codec.New(c)}, nil
return &ipcClient{cfg.Endpoint, c, codec, codec.New(c)}, nil
}
func (self *ipcClient) reconnect() error {
@ -48,7 +48,10 @@ func startIpc(cfg IpcConfig, codec codec.Codec, api shared.EthereumApi) error {
continue
}
go handle(conn, api, codec)
id := newIpcConnId()
glog.V(logger.Debug).Infof("New IPC connection with id %06d started\n", id)
go handle(id, conn, api, codec)
}
os.Remove(cfg.Endpoint)

30
rpc/comms/ipc_windows.go
View File

@ -640,7 +640,7 @@ func newIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
return nil, err
}
return &ipcClient{cfg.Endpoint, codec, codec.New(c)}, nil
return &ipcClient{cfg.Endpoint, c, codec, codec.New(c)}, nil
}
func (self *ipcClient) reconnect() error {
@ -668,33 +668,13 @@ func startIpc(cfg IpcConfig, codec codec.Codec, api shared.EthereumApi) error {
continue
}
go func(conn net.Conn) {
codec := codec.New(conn)
id := newIpcConnId()
glog.V(logger.Debug).Infof("New IPC connection with id %06d started\n", id)
for {
req, err := codec.ReadRequest()
if err == io.EOF {
codec.Close()
return
} else if err != nil {
glog.V(logger.Error).Infof("IPC recv err - %v\n", err)
codec.Close()
return
go handle(id, conn, api, codec)
}
var rpcResponse interface{}
res, err := api.Execute(req)
rpcResponse = shared.NewRpcResponse(req.Id, req.Jsonrpc, res, err)
err = codec.WriteResponse(rpcResponse)
if err != nil {
glog.V(logger.Error).Infof("IPC send err - %v\n", err)
codec.Close()
return
}
}
}(conn)
}
os.Remove(cfg.Endpoint)
}()
glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)