79 lines
1.5 KiB
Go
79 lines
1.5 KiB
Go
package svc
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import (
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"context"
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"lone-services/pkg/redis"
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pkgws "lone-services/pkg/ws"
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jsoniter "github.com/json-iterator/go"
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"github.com/zeromicro/go-zero/core/logx"
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)
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type Subscriber struct {
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hub *Hub
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}
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func NewSubscriber(h *Hub) *Subscriber {
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return &Subscriber{hub: h}
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}
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func (s *Subscriber) Run(ctx context.Context) {
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if redis.Client == nil {
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logx.Error("ws pubsub: redis not initialized")
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return
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}
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sub := redis.Client.Subscribe(ctx, pkgws.RedisChannelQRPush)
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defer sub.Close()
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ch := sub.Channel()
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logx.Infof("ws pubsub: subscribed %s", pkgws.RedisChannelQRPush)
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for {
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select {
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case <-ctx.Done():
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return
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case msg, ok := <-ch:
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if !ok {
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return
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}
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s.handle([]byte(msg.Payload))
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}
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}
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}
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func (s *Subscriber) handle(raw []byte) {
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var evt pkgws.Event
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if err := jsoniter.Unmarshal(raw, &evt); err != nil {
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logx.Errorf("ws pubsub: unmarshal event: %v", err)
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return
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}
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if evt.SessionID == "" {
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return
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}
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resp := pkgws.Response{
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Code: evt.Code,
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Message: evt.Message,
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Data: nil,
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}
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if len(evt.Data) > 0 && string(evt.Data) != "null" {
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var data any
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if err := jsoniter.Unmarshal(evt.Data, &data); err != nil {
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resp.Data = jsoniter.RawMessage(evt.Data)
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} else {
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resp.Data = data
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}
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}
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payload, err := jsoniter.Marshal(resp)
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if err != nil {
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logx.Errorf("ws pubsub: marshal response: %v", err)
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return
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}
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if !s.hub.Send(evt.SessionID, payload) {
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logx.Infof("ws pubsub: no local conn for session=%s", evt.SessionID)
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}
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}
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