getting immediate state for store subscribers

[rotty3000]

Is there a way in the subscriber only scenario to "get" the state immediately?

Otherwise I have to wait for a store event to occur.

Currently to work around this I have to implement a global ping action and fire that in order for my subscriber function to get called.

Is there a better way?

[rotty3000]

Another issue in the subscribe only scenario is that if the store doesn't exist yet I get an error. I'm wondering if there's a way to handle this as an "subscribe on demand" approach.

[rotty3000]

On possible approach could be to use GlobalStore.Get().SubscribeToGlobalState(...)

[tmonikat]

Is there a way in the subscriber only scenario to "get" the state immediately?

Otherwise I have to wait for a store event to occur.

> Currently to work around this I have to implement a global ping action and fire that in order for my subscriber function to get called.

Is there a better way?

How do you implement a global ping?
I am also having an issue where the Subscriber MFE events are not getting fired.

In my subscribed mfe.

 const globalContext = useContext(GlobalContext);

 if (globalContext ) {
        console.log("Registering CustomerAPP");
        globalContext .RegisterStore("CustomerApp", store);
        
        globalContext .RegisterGlobalActions("CustomerApp", [custFetchConstants.BLOG_FETCH_REQUEST, 
  custFetchConstants.BLOG_FETCH_SUCCESS,custFetchConstants.BLOG_FETCH_ERROR]);
    }

On local reducer action, I notice the Subscribe block is executed 3 times on first time page load.
After first time page load and action, for the next 'createCustCall' the Subscribe even doesnt trigger and GlobalStore still contains stale data.

 const createCustCall =() => {
        dispatch(createCustomer({ id, name}));
        globalStore && globalStore.SubscribeToGlobalState("CustomerApp", state => {
            console.log("After create CustomerApp state=",state);
        });

    }

How do you invoke Global ping here, to trigger subscribe action?

[rotty3000]

How do you implement a global ping?

naively.. as follows:

function navigationReducer(state: any = initialState, action: any): any {
	switch (action.type) {
		case ...
		default:
			return state;
	}
}

let globalStore:GlobalStore = GlobalStore.Get();

let navStore:Redux.Store = createStore(
	navigationReducer,
	...
);

globalStore.RegisterStore(
	'foo',
	navStore
);

globalStore.RegisterGlobalActions(
	'foo',
	[... , 'navigation/ping']
);

and later, but eagerly:

GlobalStore.Get().DispatchAction('foo', <any> {type: 'navigation/ping'});

[tmonikat]

Thanks for your suggestion @rotty3000 .
I was able resolve the issue of immediate state update by updating the signature of RegisterStore() as follows:

const { globalStore } = props;
    if (globalStore) {
        **_globalStore.RegisterStore("CustomerApp", store, [], true);_**
        console.log("Register CustomerApp state=",globalStore);
    }

The change follows this:

    /**
     * Summary: Registers an isolated app store
     *
     * @access public
     *
     * @param {string} appName Name of the App.
     * @param {Store} store Instance of the store.
     * @param {boolean} shouldReplace Flag to indicate if the an already registered store needs to be replaced.
     */
      RegisterStore(appName: string, store: Store, globalActions?: Array<string>, shouldReplaceExistingStore?: boolean): void;

The last boolean value to replace the store, did the magic.
After making the above change, I can see the state update events are triggered immediately for all local state update.

However, the second MFE still cant listen to the events.

const { globalStore } = useContext(AppContext);
 useEffect(() => {
       if (globalStore && globalStore.GetPartnerState("CustomerApp")) {
           //this works
            setBlogs(globalStore.GetPartnerState("CustomerApp").customer.data);
           //this doesn't trigger as it is not on current page
            globalStore.Subscribe('CustomerApp', state => {
               //this is NEVER printed
                console.log("From CustomerApp state=",state);
                setBlogs(state.customer.data);
            });
       }
    }, [globalStore]);

Any suggestions to improve on listening to events.