/
stream.go
162 lines (133 loc) · 3.86 KB
/
stream.go
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package stream
import (
"context"
"errors"
"net/http"
"time"
"github.com/gorilla/websocket"
"github.com/slntopp/core-chatting/cc"
"github.com/slntopp/core-chatting/pkg/core"
"connectrpc.com/connect"
"github.com/slntopp/core-chatting/pkg/graph"
"github.com/slntopp/core-chatting/pkg/pubsub"
"go.uber.org/zap"
"google.golang.org/protobuf/proto"
)
type StreamServer struct {
log *zap.Logger
upgrader websocket.Upgrader
userCtrl *graph.UsersController
msgCtrl *graph.MessagesController
chatsCtrl *graph.ChatsController
ps *pubsub.PubSub
key []byte
}
func NewStreamServer(logger *zap.Logger, userCtrl *graph.UsersController, msgCtrl *graph.MessagesController, chatsCtrl *graph.ChatsController, ps *pubsub.PubSub, key []byte) *StreamServer {
upgrader := websocket.Upgrader{
CheckOrigin: func(r *http.Request) bool {
return true
},
Subprotocols: []string{"Bearer"},
}
return &StreamServer{
log: logger.Named("StreamService"),
userCtrl: userCtrl,
msgCtrl: msgCtrl,
chatsCtrl: chatsCtrl,
ps: ps,
upgrader: upgrader,
key: key,
}
}
func (s *StreamServer) Stream(ctx context.Context, req *connect.Request[cc.StreamRequest], serverStream *connect.ServerStream[cc.Event]) error {
requestor := ctx.Value(core.ChatAccount).(string)
log := s.log.Named("Stream").Named(requestor)
defer log.Debug("Stream closed")
res, err := s.userCtrl.Resolve(ctx, []string{requestor})
if err != nil {
log.Error("Failed to resolve user", zap.Error(err))
return err
}
var streamUser *cc.User
for _, user := range res {
if user.Uuid == requestor {
streamUser = user
goto start_stream
}
}
log.Error("Failed to resolve user")
return connect.NewError(connect.CodeUnauthenticated, errors.New("failed to resolve user"))
start_stream:
if streamUser.GetCcIsBot() {
log.Debug("Stream requestor is a bot", zap.String("username", streamUser.GetCcUsername()), zap.Any("commands", req.Msg.GetCommands()))
err := s.userCtrl.UpdateCommands(ctx, streamUser.GetUuid(), req.Msg.GetCommands())
if err != nil {
log.Error("Failed to update commands in bot", zap.Error(err))
return err
}
}
log.Info("Start stream", zap.String("user", requestor))
msgs, queueTerminator, err := s.ps.Sub(requestor)
if err != nil {
return connect.NewError(connect.CodeInternal, err)
}
defer func() {
log.Debug("Queue termination")
queueError := queueTerminator()
if queueError != nil {
log.Error("Failed to delete queue", zap.Error(queueError))
}
}()
var event = &cc.Event{}
ticker := time.NewTicker(10 * time.Second)
for {
select {
case msg := <-msgs:
err := proto.Unmarshal(msg.Body, event)
if err != nil {
log.Error("Failed to unmarshal event", zap.Error(err))
continue
}
log.Info("Receive message", zap.Any("event", event))
if event.GetType() == cc.EventType_MESSAGE_SENT {
message := event.GetMsg()
newMessage, err := s.msgCtrl.Read(ctx, message, requestor)
if err != nil {
log.Error("Failed to update readers", zap.Error(err))
return err
}
chat, err := s.chatsCtrl.Get(ctx, message.GetChat(), requestor)
if err != nil {
log.Error("Failed to get chat", zap.Error(err))
return err
}
event.Item = &cc.Event_Msg{Msg: newMessage}
readEvent := &cc.Event{
Type: cc.EventType_CHAT_READ,
Item: &cc.Event_Chat{
Chat: chat,
},
}
err = serverStream.Send(readEvent)
if err != nil {
log.Error("Failed to send read event", zap.Error(err))
return err
}
}
err = serverStream.Send(event)
if err != nil {
log.Error("Error writing message", zap.Error(err))
return err
}
log.Debug("Processed event successfully")
case <-ticker.C:
err := serverStream.Send(&cc.Event{
Type: cc.EventType_PING,
})
if err != nil {
log.Error("Failed to send message", zap.Error(err))
return nil
}
}
}
}