INTENG-21262 Fix for Duplicate purchase events (cached). #1433
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-> Remove archived request file from disk when those req. are added in queue for processing on app launch. -> When persist timer is fired and req queue is empty, delete cache file from disk. persistImmediately func was earlier returning without updating cache if req queue was empty. -> Added check fileExistsAtPath before removing it in func removeSaveFile.
nsingh-branch
approved these changes
Sep 24, 2024
gdeluna-branch
approved these changes
Sep 24, 2024
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #1433 +/- ##
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- Coverage 51.10% 50.96% -0.14%
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Files 66 66
Lines 10158 10273 +115
Branches 3724 3775 +51
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+ Hits 5191 5236 +45
- Misses 4707 4777 +70
Partials 260 260
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NidhiDixit09
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Reference
https://branch.atlassian.net/browse/INTENG-21262
Summary
Issue : SDK sends Duplicate purchase events on cold launch of app if network request processing failed in previous launches.
SDK archives a copy of its Request Queue on Disk. Its a txt file (
BNCServerRequestQueue)stored inside theApplication Supportfolder of the data container of app. This archived copy is updated at regular intervals using a timer.When app is cold launched, SDK reads this file and adds requests left unprocessed from last run in its Request Queue.
Because of a bug in SDK, this archived file was not deleted from disk if current request queue is empty. As a result, SDK keeps sending these cached requests on every cold launch of app.
Steps for reproducing bug :
Type Of Change
Testing Instructions
-> Check all unit tests pass.
-> Verify fix -
- Create
BNCServerRequestQueuearchive file using steps mentioned above (Steps 1-4). On my system its stored at path/Users/nidhi.dixit/Library/Developer/CoreSimulator/Devices/9C999B8A-A12B-4DDC-9A7E-A7F9DE201024/data/Containers/Data/Application/FD451857-78A8-4C5A-88C3-7CC9932D931C/Library/Application\ Support/io.branch. I am testing using simulator.- Cold Lauch App and check all failed requests in previous launch are processed.
BNCServerRequestQueuefile is deleted / updated and it does not contain processed requests anymore.- Cold Launch App again and check SDK is not sending duplicate purchase events.
cc @BranchMetrics/saas-sdk-devs for visibility.