Defer local updates if there are missing updates and only call `GetMissingOnyxMessages` once #38997

chrispader · 2024-03-26T12:11:11Z

Details

Fixed Issues

$ #38748
PROPOSAL:

Tests

Verify that no errors appear in the JS console

Test 1

I created a testing branch that prevents some updates from being applied (therefore GetMissingOnyxUpdates will be triggered) and has some useful logs.

Either test in this branch or on your own. In OnyxUpdateManager do the following:

Delay the call to applyDeferredUpdates with a setTimeout
Prevent some update from being applied
Check that GetMissingOnyxUpdates is triggered
Add some more updates
Check that these updates are added to the deferredUpdates object
Check that no more calls to GetMissingOnyxUpdates are performed
Once the timeout has ended, check that both the missing and deferred updates are applied correctly.

Test 2

Create a chat report with a peer
Create a policy room between both of you

after those rooms are created, and both of you opened them at least once, comment these calls to make sure we're not reloading the data from the backend instead:

App/src/libs/actions/Report.ts

Lines 769 to 789 in a4d01a8

    
           if (isFromDeepLink) { 
        
               // eslint-disable-next-line rulesdir/no-api-side-effects-method 
        
               API.makeRequestWithSideEffects(SIDE_EFFECT_REQUEST_COMMANDS.OPEN_REPORT, parameters, {optimisticData, successData, failureData}).finally(() => { 
        
                   Onyx.set(ONYXKEYS.IS_CHECKING_PUBLIC_ROOM, false); 
        
               }); 
        
           } else { 
        
               // eslint-disable-next-line rulesdir/no-multiple-api-calls 
        
               API.write( 
        
                   WRITE_COMMANDS.OPEN_REPORT, 
        
                   parameters, 
        
                   {optimisticData, successData, failureData}, 
        
                   { 
        
                       getConflictingRequests: (persistedRequests) => 
        
                           // requests conflict only if: 
        
                           // 1. they are OpenReport commands 
        
                           // 2. they have the same reportID 
        
                           // 3. they are not creating a report - all calls to OpenReport that create a report will be unique and have a unique createdReportActionID 
        
                           persistedRequests.filter((request) => request.command === WRITE_COMMANDS.OPEN_REPORT && request.data?.reportID === reportID && !request.data?.createdReportActionID), 
        
                   }, 
        
               ); 
        
           }

Now send messages in both chat rooms, alternating between them, and fast, in a way that you can notice if anything is missing (so both start sending some kind of ordered messages, like sequential numbers)
Make sure that none of the messages were lost in those chats.

Offline tests

Not needed.

QA Steps

Verify that no errors appear in the JS console

Only Test 2 from "Tests"

PR Author Checklist

Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

MacOS: Desktop

Tested deferring logic on web, iOS and Android. mWeb behavior is the same as in web...

…tMissingOnyxMessages

chrispader · 2024-03-26T18:12:33Z

@danieldoglas could you take a look at the current implementation and just check, if this is at least somehow what you expected? just checking before i spend too much time on the actual implementation.

I expect this PR to be done tomorrow if the current approach is feasible.

danieldoglas

Added a few comments, but I think we're missing a few things:

We should only apply the deferred updates if the current applied update is smaller than their lastUpdateID. Another way to see this is that we should only apply them if they are > the tha lastUpdateID in the deferredUpdateBeforeReconnect
By applying the item above, we need to confirm that the updates that were received are also linked correctly to the deferredUpdateBeforeReconnect
I'm not sure if there are gains in persisting the deferredUpdates or not. I think maybe not?

src/libs/actions/OnyxUpdateManager.ts

chrispader · 2024-03-27T11:04:02Z

We should only apply the deferred updates if the current applied update is smaller than their lastUpdateID. Another way to see this is that we should only apply them if they are > the tha lastUpdateID in the deferredUpdateBeforeReconnect

I updated the code so that we check for "old" deferred updates, that have already been applied through GetMissingOnyxUpdates. I basically just filter them out and store the rest in pendingDeferredUpdates, since they can only be outdated, if they were included in the response from GetMissingOnyxUpdates.

By applying the item above, we need to confirm that the updates that were received are also linked correctly to the deferredUpdateBeforeReconnect

Are case (1) and (2) expected to happen subsequently? As in my other comment, i might not fully understand case (1).

I'm not sure if there are gains in persisting the deferredUpdates or not. I think maybe not?

I don't think we need to persist the deferred values, since on a reload/restart we're fetching everything again anyway, right?

Updated the code and tested it thoroughly. I'm manually skipping some updates locally to simulate XHR requests not reaching the client. The missing updates are received from GetMissingOnyxUpdates and the (filtered) deferred updates are linked and applied correctly.

@danieldoglas let me know what you think and maybe you can test this on your machine as well, so we're safe here...

melvin-bot · 2024-03-27T11:05:01Z

@getusha Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

chrispader · 2024-03-27T11:19:58Z

No need for C+ on this one!

Not sure if we need a C+ on this one? @danieldoglas

#38748 (comment)

…tMissingOnyxMessages

danieldoglas · 2024-03-28T17:17:17Z

I don't think we need a C+ on this one! Removing @getusha

src/libs/actions/OnyxUpdateManager.ts

chrispader · 2024-03-29T12:30:18Z

@danieldoglas just triggered another review request. Could you give this a look, so we can maybe merge this today?

I'll try to be available in the evening, in case there are any issues.

hungvu193 · 2024-04-02T14:55:25Z

Just tested this on main, and i'm seeing these screen flashes and lags there too. So this seems unrelated to this PR.

On the left side, you can see main running on the local dev server. On the right is just new.expensify.com:

Screen.Recording.2024-04-02.at.16.31.29.mov

Confirmed it's also happening on Staging

chrispader · 2024-04-02T15:01:24Z

Ok cool. Let's me check. Also can I use your test branch now?

Yes, you can use it. But the goal of this test branch is to just receive some messages in any report (that were sent from another device+account) and then in the DevTools you will see a bunch of logs, that show, that the logic is working

src/libs/actions/OnyxUpdateManager.ts

eh2077 · 2024-04-02T15:39:57Z

src/libs/actions/OnyxUpdateManager.ts

+// In order for the deferred updates to be applied correctly in order,
+// we need to check if there are any gaps between deferred updates.
+type DetectGapAndSplitResult = {applicableUpdates: DeferredUpdatesDictionary; updatesAfterGaps: DeferredUpdatesDictionary; latestMissingUpdateID: number | undefined};
+function detectGapsAndSplit(updates: DeferredUpdatesDictionary): DetectGapAndSplitResult {


I think a few examples or test cases here will be very helpful to understand the code.

hungvu193 · 2024-04-02T16:27:05Z

Ok, I can confirm the logic worked on test branch

Screen.Recording.2024-04-02.at.22.29.40.mov

danieldoglas · 2024-04-02T16:51:11Z

@hungvu193 @eh2077 please also confirm through the network tab that we're not executing several GetMissingOnyxUpdates at the same time while you're testing this

hungvu193 · 2024-04-02T17:07:49Z

@hungvu193 @eh2077 please also confirm through the network tab that we're not executing several GetMissingOnyxUpdates at the same time while you're testing this

Yep. I can confirm it as well.

GetmissingOnyx.mov

Co-authored-by: Eric Han <[email protected]>

…tMissingOnyxMessages

danieldoglas · 2024-04-03T06:15:07Z

@eh2077 , anything else you've noted on this PR that we might need to change?

eh2077 · 2024-04-03T08:04:38Z

@danieldoglas Sorry for the delay. I'm on it and let me look into the code and do some more tests. Will update in an hour.

eh2077 · 2024-04-03T09:34:31Z

@chrispader I tested the case described in primary GH #38748. I found that sometimes GetMissingOnyxMessages was called two times.

0-API-call-2-times.mp4

And the console log FYI

chrispader · 2024-04-03T09:56:48Z

@chrispader I tested the case described in primary GH #38748. I found that sometimes GetMissingOnyxMessages was called two times.

And the console log FYI

@eh2077 I'm not sure about your case exactly, but this is intentional. When we find a gap in the deferred updates, We will trigger a second call to GetMissingOnyxMessages, and potentially even more, until all gaps have been resolved.

This is a recursive call in https://github.com/margelo/expensify-app-fork/blob/cd48514a02629f49f39d769425e6b866a8d9a4b6/src/libs/actions/OnyxUpdateManager.ts#L150

eh2077 · 2024-04-03T09:58:59Z

@chrispader I see. So, multiple API calls are expected as long as there's no overlapping of the updateID ranges of them, right?

chrispader · 2024-04-03T10:01:58Z

@chrispader I see. So, multiple API calls are expected as long as there's no overlapping of the updateID ranges of them, right?

yes, basically. It might potentially be the case though, that the updateIDTo of the first call is the updateIDFrom of the second call, in case the first deferred update already creates a gap.

eh2077 · 2024-04-03T10:22:44Z

Reviewer Checklist

I have verified the author checklist is complete (all boxes are checked off).
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- Android: Native
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- iOS: Native
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Screenshots/Videos

Android: Native

N/A

Android: mWeb Chrome

N/A

iOS: Native

N/A

iOS: mWeb Safari

N/A

MacOS: Chrome / Safari

0-API-call-2-times.mp4

MacOS: Desktop

N/A

eh2077

Looks good and tested well.

OSBotify · 2024-04-03T10:41:14Z

✋ This PR was not deployed to staging yet because QA is ongoing. It will be automatically deployed to staging after the next production release.

kavimuru · 2024-04-04T17:22:16Z

@danieldoglas @hungvu193 Could you explain the step 3 in Tests 2 section?

aldo-expensify · 2024-04-05T00:45:33Z

This seems to have cause this deploy blocker #39650 and this crash https://expensify.slack.com/archives/C049HHMV9SM/p1712264151436019

OSBotify · 2024-04-08T10:55:35Z

🚀 Deployed to production by https://github.com/Julesssss in version: 1.4.60-13 🚀

platform	result
🤖 android 🤖	success ✅
🖥 desktop 🖥	success ✅
🍎 iOS 🍎	success ✅
🕸 web 🕸	success ✅

chrispader added 7 commits March 26, 2024 13:09

defer updates if missing updates are fetched

d32cd8b

simplify

e41558e

move deferred updates out of callback

931527c

simplify comments

5088441

Merge branch 'main' into @chrispader/prevent-simultaneous-calls-to-Ge…

9954e40

…tMissingOnyxMessages

Merge branch 'main' into @chrispader/prevent-simultaneous-calls-to-Ge…

a314f1f

…tMissingOnyxMessages

fix: apply deferred updates in order

9d818d3

chrispader mentioned this pull request Mar 26, 2024

[HOLD for payment 2024-05-09] HIGH: [API Reliability] Prevent simultaneous calls to GetMissingOnyxMessages using a deferredUpdates queue #38748

Closed

danieldoglas reviewed Mar 26, 2024

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chrispader added 2 commits March 27, 2024 11:44

simplify and improve applying deferred updates

f21ea78

check if deferred updates are older than the currently applied one

3cc017e

chrispader marked this pull request as ready for review March 27, 2024 11:04

chrispader requested a review from a team as a code owner March 27, 2024 11:04

melvin-bot bot removed the request for review from a team March 27, 2024 11:05

melvin-bot bot requested a review from getusha March 27, 2024 11:05

improve code

ce9027c

chrispader changed the title ~~[WIP] Defer local updates if missing updates are fetched via GetMissingOnyxMessages~~ Defer local updates if there are missing updates and only call GetMissingOnyxMessages once Mar 27, 2024

Merge branch 'main' into @chrispader/prevent-simultaneous-calls-to-Ge…

9889206

…tMissingOnyxMessages

chrispader requested a review from danieldoglas March 27, 2024 15:14

danieldoglas removed the request for review from getusha March 28, 2024 17:17

danieldoglas reviewed Mar 28, 2024

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src/libs/actions/OnyxUpdateManager.ts Outdated Show resolved Hide resolved

fix: refetching logic

c3034e0

chrispader requested a review from danieldoglas March 29, 2024 12:29

fix: comments and logic

b9afdf3

eh2077 reviewed Apr 2, 2024

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src/libs/actions/OnyxUpdateManager.ts Outdated Show resolved Hide resolved

src/libs/actions/OnyxUpdateManager.ts Show resolved Hide resolved

eh2077 reviewed Apr 2, 2024

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hungvu193 approved these changes Apr 2, 2024

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melvin-bot bot requested a review from danieldoglas April 2, 2024 17:13

chrispader and others added 2 commits April 2, 2024 19:43

Update OnyxUpdateManager.ts

67f322e

Co-authored-by: Eric Han <[email protected]>

Merge branch 'main' into @chrispader/prevent-simultaneous-calls-to-Ge…

cd48514

…tMissingOnyxMessages

eh2077 approved these changes Apr 3, 2024

View reviewed changes

danieldoglas approved these changes Apr 3, 2024

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danieldoglas merged commit 488664d into Expensify:main Apr 3, 2024
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github-actions bot mentioned this pull request Apr 4, 2024

[INCORRECT] (used to be a checklist but was incorrectly triggered) #39573

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mountiny mentioned this pull request Apr 4, 2024

Deploy Checklist: New Expensify 2024-04-04 #39588

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luacmartins mentioned this pull request Apr 4, 2024

[CP Staging] Revert "Defer local updates if there are missing updates and only call GetMissingOnyxMessages once" #39668

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aldo-expensify mentioned this pull request Apr 5, 2024

Chat - Second and subsequent messages not displayed in chat until chat reloaded #39650

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chrispader mentioned this pull request Apr 5, 2024

After revert: Defer local updates if there are missing updates and only call GetMissingOnyxMessages once #39683

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Defer local updates if there are missing updates and only call `GetMissingOnyxMessages` once #38997

Defer local updates if there are missing updates and only call `GetMissingOnyxMessages` once #38997

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	if (isFromDeepLink) {
	// eslint-disable-next-line rulesdir/no-api-side-effects-method
	API.makeRequestWithSideEffects(SIDE_EFFECT_REQUEST_COMMANDS.OPEN_REPORT, parameters, {optimisticData, successData, failureData}).finally(() => {
	Onyx.set(ONYXKEYS.IS_CHECKING_PUBLIC_ROOM, false);
	});
	} else {
	// eslint-disable-next-line rulesdir/no-multiple-api-calls
	API.write(
	WRITE_COMMANDS.OPEN_REPORT,
	parameters,
	{optimisticData, successData, failureData},
	{
	getConflictingRequests: (persistedRequests) =>
	// requests conflict only if:
	// 1. they are OpenReport commands
	// 2. they have the same reportID
	// 3. they are not creating a report - all calls to OpenReport that create a report will be unique and have a unique createdReportActionID
	persistedRequests.filter((request) => request.command === WRITE_COMMANDS.OPEN_REPORT && request.data?.reportID === reportID && !request.data?.createdReportActionID),
	},
	);
	}

Defer local updates if there are missing updates and only call GetMissingOnyxMessages once #38997

Defer local updates if there are missing updates and only call GetMissingOnyxMessages once #38997

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chrispader commented Mar 26, 2024 • edited Loading

Details

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Test 1

Test 2

Offline tests

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Screenshots/Videos

chrispader commented Mar 26, 2024

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Defer local updates if there are missing updates and only call `GetMissingOnyxMessages` once #38997

Defer local updates if there are missing updates and only call `GetMissingOnyxMessages` once #38997

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