/
client.go
202 lines (194 loc) · 5.16 KB
/
client.go
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package main
import (
"bytes"
"encoding/json"
"flag"
"io/ioutil"
"log"
"net/http"
"net/url"
"regexp"
"runtime"
"strings"
"time"
"github.com/gorilla/websocket"
"github.com/incognitochain/incognito-chain/rpcserver"
"github.com/incognitochain/incognito-chain/rpcserver/rpcservice"
)
var (
flags = make(map[string]*string)
)
type Client struct {
host string
port string
ws string
}
func newClient() *Client {
return &Client{}
}
func newClientWithHost(host, port string) *Client {
return &Client{
host: host,
port: port,
}
}
func newClientWithFullInform(host, port, ws string) *Client {
return &Client{
host: host,
port: port,
ws: ws,
}
}
func getMethodName(depthList ...int) string {
var depth int
if depthList == nil {
depth = 1
} else {
depth = depthList[0]
}
function, _, _, _ := runtime.Caller(depth)
r, _ := regexp.Compile("\\.(.*)")
return strings.ToLower(r.FindStringSubmatch(runtime.FuncForPC(function).Name())[1])
}
func makeRPCRequest(client *Client, method string, params ...interface{}) (*rpcserver.JsonResponse, *rpcservice.RPCError) {
request := rpcserver.JsonRequest{
Jsonrpc: "1.0",
Method: method,
Params: params,
Id: "1",
}
requestBytes, err := json.Marshal(&request)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
resp, err := http.Post(client.host+":"+client.port, "application/json", bytes.NewBuffer(requestBytes))
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
body := resp.Body
defer body.Close()
responseBytes, err := ioutil.ReadAll(body)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
response := rpcserver.JsonResponse{}
err = json.Unmarshal(responseBytes, &response)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
return &response, nil
}
func makeRPCRequestJson(client *Client, method string, params ...interface{}) (interface{}, *rpcservice.RPCError) {
request := rpcserver.JsonRequest{
Jsonrpc: "1.0",
Method: method,
Params: params,
Id: "1",
}
requestBytes, err := json.Marshal(&request)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
resp, err := http.Post("http://"+client.host+":"+client.port, "application/json", bytes.NewBuffer(requestBytes))
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
body := resp.Body
defer body.Close()
responseBytes, err := ioutil.ReadAll(body)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
response := rpcserver.JsonResponse{}
err = json.Unmarshal(responseBytes, &response)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
result := parseResult(response.Result)
if result == nil {
return result, rpcservice.NewRPCError(rpcservice.NetworkError, ParseFailedError)
}
return result, response.Error
}
func makeWsRequest(client *Client, method string, timeout time.Duration, params ...interface{}) (interface{}, *rpcservice.RPCError) {
var done = make(chan struct{})
var wsError error
request := rpcserver.JsonRequest{
Jsonrpc: "1.0",
Method: method,
Params: params,
Id: "1",
}
subcription := rpcserver.SubcriptionRequest{
JsonRequest: request,
Subcription: "0",
Type: 0,
}
subcriptionBytes, err := json.Marshal(&subcription)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
var addr string
if flag.Lookup("address:"+client.host+client.ws) != nil {
addr = flag.Lookup("address:" + client.host + client.ws).Value.(flag.Getter).Get().(string)
} else {
addr = *flag.String("address:"+client.host+client.ws, client.host+":"+client.ws, "http service address")
}
u := url.URL{Scheme: "ws", Host: addr, Path: "/"}
conn, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
if err != nil {
log.Fatal("dial:", err)
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
defer conn.Close()
err = conn.WriteMessage(websocket.BinaryMessage, subcriptionBytes)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
responseBytes := []byte{}
go func() {
defer close(done)
for {
_, reader, err := conn.NextReader()
wsError = err
if err != nil {
return
}
responseChunk, err := ioutil.ReadAll(reader)
responseBytes = append(responseBytes, responseChunk...)
return
}
}()
ticker := time.NewTicker(timeout)
loop:
for {
select {
case <-ticker.C:
{
break loop
}
case <-done:
{
break loop
}
}
}
if wsError != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, wsError)
}
response := rpcserver.JsonResponse{}
err = json.Unmarshal(responseBytes, &response)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
subResult := rpcserver.SubcriptionResult{}
err = json.Unmarshal(response.Result, &subResult)
if err != nil {
return nil, rpcservice.NewRPCError(rpcservice.NetworkError, err)
}
result := parseResult(subResult.Result)
if result == nil {
return result, rpcservice.NewRPCError(rpcservice.NetworkError, ParseFailedError)
}
return result, response.Error
}