Dealer/pkg/internal/server/api/ws.go

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package api
import (
"context"
"fmt"
"git.solsynth.dev/hydrogen/dealer/pkg/hyper"
"git.solsynth.dev/hydrogen/dealer/pkg/internal/directory"
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"git.solsynth.dev/hydrogen/dealer/pkg/internal/models"
"git.solsynth.dev/hydrogen/dealer/pkg/internal/services"
"git.solsynth.dev/hydrogen/dealer/pkg/proto"
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"github.com/gofiber/contrib/websocket"
jsoniter "github.com/json-iterator/go"
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"github.com/rs/zerolog/log"
"github.com/spf13/viper"
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)
func listenWebsocket(c *websocket.Conn) {
user := c.Locals("user").(models.Account)
// Push connection
clientId := services.ClientRegister(user, c)
log.Debug().
Uint("user", user.ID).
Uint64("clientId", clientId).
Msg("New websocket connection established...")
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// Event loop
var mt int
var data []byte
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var err error
var packet hyper.NetworkPackage
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for {
if mt, data, err = c.ReadMessage(); err != nil {
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break
} else if err := jsoniter.Unmarshal(data, &packet); err != nil {
_ = c.WriteMessage(mt, hyper.NetworkPackage{
Action: "error",
Message: "unable to unmarshal your command, requires json request",
}.Marshal())
continue
}
aliasingMap := viper.GetStringMapString("services.aliases")
if val, ok := aliasingMap[packet.Endpoint]; ok {
packet.Endpoint = val
}
service := directory.GetServiceInstanceByType(packet.Endpoint)
if service == nil {
_ = c.WriteMessage(mt, hyper.NetworkPackage{
Action: "error",
Message: "service not found",
}.Marshal())
continue
}
pc, err := service.GetGrpcConn()
if err != nil {
_ = c.WriteMessage(mt, hyper.NetworkPackage{
Action: "error",
Message: fmt.Sprintf("unable to connect to service: %v", err.Error()),
}.Marshal())
continue
}
sc := proto.NewStreamControllerClient(pc)
_, err = sc.EmitStreamEvent(context.Background(), &proto.StreamEventRequest{
Event: packet.Action,
UserId: uint64(user.ID),
ClientId: uint64(clientId),
Payload: packet.RawPayload(),
})
if err != nil {
_ = c.WriteMessage(mt, hyper.NetworkPackage{
Action: "error",
Message: fmt.Sprintf("unable send message to service: %v", err.Error()),
}.Marshal())
continue
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}
}
// Pop connection
services.ClientUnregister(user, clientId)
log.Debug().
Uint("user", user.ID).
Uint64("clientId", clientId).
Msg("A websocket connection disconnected...")
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}