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Unsubscribe from pusher channels if there are no more events subscribed #42447

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Merged
roryabraham merged 3 commits into from
May 24, 2024
Merged

Unsubscribe from pusher channels if there are no more events subscribed #42447

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1aee416
Unsubscribe from pusher channels if there are no more events subscribed
roryabraham May 22, 2024
ee70b5c
Correct add map entries
roryabraham May 22, 2024
3f7b32d
Merge branch 'main' into Rory-PusherUnsubscribe
roryabraham May 22, 2024
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16 changes: 14 additions & 2 deletions src/libs/Pusher/pusher.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,8 @@ let pusherSocketID = '';
const socketEventCallbacks: SocketEventCallback[] = [];
let customAuthorizer: ChannelAuthorizerGenerator;

const eventsBoundToChannels = new Map<Channel, Set<PusherEventName>>();

/**
* Trigger each of the socket event callbacks with the event information
*/
Expand Down Expand Up @@ -153,7 +155,7 @@ function getChannel(channelName: string): Channel | undefined {
* Binds an event callback to a channel + eventName
*/
function bindEventToChannel<EventName extends PusherEventName>(channel: Channel | undefined, eventName: EventName, eventCallback: (data: EventData<EventName>) => void = () => {}) {
if (!eventName) {
if (!eventName || !channel) {
return;
}

Expand Down Expand Up @@ -213,7 +215,11 @@ function bindEventToChannel<EventName extends PusherEventName>(channel: Channel
}
};

channel?.bind(eventName, callback);
channel.bind(eventName, callback);
if (!eventsBoundToChannels.has(channel)) {
eventsBoundToChannels.set(channel, new Set());
}
eventsBoundToChannels.get(channel)?.add(eventName);
}

/**
Expand Down Expand Up @@ -288,6 +294,12 @@ function unsubscribe(channelName: string, eventName: PusherEventName = '') {
if (eventName) {
Log.info('[Pusher] Unbinding event', false, {eventName, channelName});
channel.unbind(eventName);
eventsBoundToChannels.get(channel)?.delete(eventName);
if (eventsBoundToChannels.get(channel)?.size === 0) {
Log.info(`[Pusher] After unbinding ${eventName} from channel ${channelName}, no other events were bound to that channel. Unsubscribing...`, false);
eventsBoundToChannels.delete(channel);
socket?.unsubscribe(channelName);
}
} else {
if (!channel.subscribed) {
Log.info('Pusher] Attempted to unsubscribe from channel, but we are not subscribed to begin with', false, {channelName});
Expand Down