Handle SSE event stream reconnection (#17523)
This PR handles SSE event stream edge cases. - When a pod restarts, the front clients have to reconnect to SSE - When the dev server restarts or is hot reloaded, the front client has to reconnect to SSE - When redis server restarts or the redis key is cleared for any reason, the server has to recreate the event stream in redis, this can happen when navigating for example. - Log in / log out flow With this PR we avoid error messages in the front end due to TTL or pod crash, we implement a resilient way of reconnecting silently. To avoid DDoSing our servers if pods crash or a full restart of the cluster is made, we evenly space retry attempts to reconnect from all the clients, to avoid n clients reconnection at the same time, we use a random wait time between 0 and a constant max wait time (set to 2 mins for now). This is the cheapest and most effective solution, clients who want to force reconnect have to refresh or navigate to another page. Fixes https://github.com/twentyhq/core-team-issues/issues/2045
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@@ -79,6 +79,7 @@ export const useGraphQLErrorHandlerHook = <
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}
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return {
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// TODO: define onSubscribe here to handle subscription errors too
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async onExecute({ args }) {
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const exceptionHandlerService = options.exceptionHandlerService;
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const rootOperation = args.document.definitions.find(
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