Merge pull request #41 from pterodactyl/fix/race-1
Fix a possible race condition when Unsubscribing from the EventBus
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commit
da26b4c5c7
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@ -26,9 +26,9 @@ func (h *Handler) ListenForExpiration(ctx context.Context) {
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jwt := h.GetJwt()
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if jwt != nil {
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if jwt.ExpirationTime.Unix()-time.Now().Unix() <= 0 {
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h.SendJson(&Message{Event: TokenExpiredEvent})
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_ = h.SendJson(&Message{Event: TokenExpiredEvent})
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} else if jwt.ExpirationTime.Unix()-time.Now().Unix() <= 180 {
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h.SendJson(&Message{Event: TokenExpiringEvent})
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_ = h.SendJson(&Message{Event: TokenExpiringEvent})
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}
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}
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}
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@ -63,7 +63,7 @@ func (h *Handler) ListenForServerEvents(ctx context.Context) {
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close(eventChannel)
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default:
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h.SendJson(&Message{
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_ = h.SendJson(&Message{
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Event: d.Topic,
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Args: []string{d.Data},
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})
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@ -46,30 +46,32 @@ func (s *Server) Events() *EventBus {
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// Publish data to a given topic.
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func (e *EventBus) Publish(topic string, data string) {
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e.RLock()
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defer e.RUnlock()
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go func() {
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e.RLock()
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defer e.RUnlock()
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t := topic
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// Some of our topics for the socket support passing a more specific namespace,
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// such as "backup completed:1234" to indicate which specific backup was completed.
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//
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// In these cases, we still need to the send the event using the standard listener
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// name of "backup completed".
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if strings.Contains(topic, ":") {
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parts := strings.SplitN(topic, ":", 2)
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t := topic
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// Some of our topics for the socket support passing a more specific namespace,
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// such as "backup completed:1234" to indicate which specific backup was completed.
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//
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// In these cases, we still need to the send the event using the standard listener
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// name of "backup completed".
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if strings.Contains(topic, ":") {
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parts := strings.SplitN(topic, ":", 2)
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if len(parts) == 2 {
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t = parts[0]
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if len(parts) == 2 {
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t = parts[0]
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}
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}
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}
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if ch, ok := e.subscribers[t]; ok {
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go func(data Event, cs []chan Event) {
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for _, channel := range cs {
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if ch, ok := e.subscribers[t]; ok {
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data := Event{Data: data, Topic: topic}
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for _, channel := range ch {
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channel <- data
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}
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}(Event{Data: data, Topic: topic}, ch)
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}
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}
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}()
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}
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func (e *EventBus) PublishJson(topic string, data interface{}) error {
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