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client.go
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client.go
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package scclient
import (
_ "golang.org/x/net/websocket"
_ "time"
"github.com/sacOO7/socketcluster-client-go/scclient/models"
"github.com/sacOO7/socketcluster-client-go/scclient/utils"
"github.com/sacOO7/socketcluster-client-go/scclient/parser"
"github.com/sacOO7/gowebsocket"
"net/http"
"github.com/sacOO7/go-logger"
)
type Client struct {
authToken *string
url string
counter utils.AtomicCounter
socket gowebsocket.Socket
onConnect func(client Client)
onConnectError func(client Client, err error)
onDisconnect func(client Client, err error)
onSetAuthentication func(client Client, token string)
onAuthentication func(client Client, isAuthenticated bool)
ConnectionOptions gowebsocket.ConnectionOptions
RequestHeader http.Header
Listener
}
func New(url string) Client {
return Client{
url: url,
counter: utils.AtomicCounter{Counter: 0},
Listener: Init()}
}
func (client *Client) IsConnected() bool {
return client.socket.IsConnected
}
func (client *Client) EnableLogging() {
scLogger.SetLevel(logging.TRACE)
}
func (client *Client) GetLogger() logging.Logger {
return scLogger;
}
func (client *Client) SetAuthToken(token string) {
client.authToken = &token
}
func (client *Client) GetAuthToken() string {
return *client.authToken;
}
func (client *Client) SetBasicListener(onConnect func(client Client), onConnectError func(client Client, err error), onDisconnect func(client Client, err error)) {
client.onConnect = onConnect
client.onConnectError = onConnectError
client.onDisconnect = onDisconnect
}
func (client *Client) SetAuthenticationListener(onSetAuthentication func(client Client, token string), onAuthentication func(client Client, isAuthenticated bool)) {
client.onSetAuthentication = onSetAuthentication
client.onAuthentication = onAuthentication
}
func (client *Client) registerCallbacks() {
client.socket.OnConnected = func(socket gowebsocket.Socket) {
client.counter.Reset()
client.sendHandshake()
if client.onConnect != nil {
client.onConnect(*client)
}
};
client.socket.OnConnectError = func(err error, socket gowebsocket.Socket) {
if err != nil {
if client.onConnectError != nil {
client.onConnectError(*client, err)
}
}
};
client.socket.OnTextMessage = func(message string, socket gowebsocket.Socket) {
scLogger.Info.Printf("%s", message)
if message == "" {
client.socket.SendText("");
} else {
var messageObject = utils.DeserializeDataFromString(message)
data, rid, cid, eventname, error := parser.GetMessageDetails(messageObject)
parseresult := parser.Parse(rid, cid, eventname)
switch parseresult {
case parser.ISAUTHENTICATED:
isAuthenticated := utils.GetIsAuthenticated(messageObject)
if client.onAuthentication != nil {
client.onAuthentication(*client, isAuthenticated);
}
case parser.SETTOKEN:
scLogger.Trace.Println("Set token event received")
token := utils.GetAuthToken(messageObject)
if client.onSetAuthentication != nil {
client.onSetAuthentication(*client, token)
}
case parser.REMOVETOKEN:
scLogger.Trace.Println("Remove token event received")
client.authToken = nil
case parser.EVENT:
scLogger.Trace.Println("Received data for event :: ", eventname)
if client.hasEventAck(eventname.(string)) {
client.handleOnAckListener(eventname.(string), data, client.ack(cid))
} else {
client.handleOnListener(eventname.(string), data)
}
case parser.ACKRECEIVE:
client.handleEmitAck(rid, error, data)
case parser.PUBLISH:
channel := models.GetChannelObject(data)
scLogger.Trace.Println("Publish event received for channel :: ", channel.Channel)
client.handleOnListener(channel.Channel, channel.Data)
}
}
};
client.socket.OnDisconnected = func(err error, socket gowebsocket.Socket) {
if client.onDisconnect != nil {
client.onDisconnect(*client, err)
}
return
}
}
func (client *Client) Connect() {
client.socket = gowebsocket.New(client.url)
client.registerCallbacks()
// Connect
client.socket.ConnectionOptions = client.ConnectionOptions
client.socket.RequestHeader = client.RequestHeader
client.socket.Connect()
}
func (client *Client) sendHandshake() {
handshake := utils.SerializeDataIntoString(models.GetHandshakeObject(client.authToken, int(client.counter.IncrementAndGet())))
client.socket.SendText(handshake);
}
func (client *Client) ack(cid int) func(error interface{}, data interface{}) {
return func(error interface{}, data interface{}) {
ackObject := models.GetReceiveEventObject(data, error, cid);
ackData := utils.SerializeDataIntoString(ackObject)
client.socket.SendText(ackData);
}
}
func (client *Client) Emit(eventName string, data interface{}) {
emitObject := models.GetEmitEventObject(eventName, data, int(client.counter.IncrementAndGet()))
emitData := utils.SerializeDataIntoString(emitObject)
client.socket.SendText(emitData);
}
func (client *Client) EmitAck(eventName string, data interface{}, ack func(eventName string, error interface{}, data interface{})) {
id := int(client.counter.IncrementAndGet())
emitObject := models.GetEmitEventObject(eventName, data, id)
emitData := utils.SerializeDataIntoString(emitObject)
client.putEmitAck(id, eventName, ack)
client.socket.SendText(emitData);
}
func (client *Client) Subscribe(channelName string) {
subscribeObject := models.GetSubscribeEventObject(channelName, int(client.counter.IncrementAndGet()))
subscribeData := utils.SerializeDataIntoString(subscribeObject)
client.socket.SendText(subscribeData);
}
func (client *Client) SubscribeAck(channelName string, ack func(eventName string, error interface{}, data interface{})) {
id := int(client.counter.IncrementAndGet())
subscribeObject := models.GetSubscribeEventObject(channelName, id)
subscribeData := utils.SerializeDataIntoString(subscribeObject)
client.putEmitAck(id, channelName, ack)
client.socket.SendText(subscribeData);
}
func (client *Client) Unsubscribe(channelName string) {
unsubscribeObject := models.GetUnsubscribeEventObject(channelName, int(client.counter.IncrementAndGet()))
unsubscribeData := utils.SerializeDataIntoString(unsubscribeObject)
client.socket.SendText(unsubscribeData);
}
func (client *Client) UnsubscribeAck(channelName string, ack func(eventName string, error interface{}, data interface{})) {
id := int(client.counter.IncrementAndGet())
unsubscribeObject := models.GetUnsubscribeEventObject(channelName, id)
unsubscribeData := utils.SerializeDataIntoString(unsubscribeObject)
client.putEmitAck(id, channelName, ack)
client.socket.SendText(unsubscribeData);
}
func (client *Client) Publish(channelName string, data interface{}) {
publishObject := models.GetPublishEventObject(channelName, data, int(client.counter.IncrementAndGet()))
publishData := utils.SerializeDataIntoString(publishObject)
client.socket.SendText(publishData);
}
func (client *Client) PublishAck(channelName string, data interface{}, ack func(eventName string, error interface{}, data interface{})) {
id := int(client.counter.IncrementAndGet())
publishObject := models.GetPublishEventObject(channelName, data, id)
publishData := utils.SerializeDataIntoString(publishObject)
client.putEmitAck(id, channelName, ack)
client.socket.SendText(publishData);
}
func (client *Client) OnChannel(eventName string, ack func(eventName string, data interface{})) {
client.putOnListener(eventName, ack)
}
func (client *Client) On(eventName string, ack func(eventName string, data interface{})) {
client.putOnListener(eventName, ack)
}
func (client *Client) OnAck(eventName string, ack func(eventName string, data interface{}, ack func(error interface{}, data interface{}))) {
client.putOnAckListener(eventName, ack)
}
func (client *Client) Disconnect() {
client.socket.Close()
}