Fix the logout main-thread freeze in StreamVideoClient cleanup - #1792
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Walkthrough
ChangesClient cleanup
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🟡 Moderate · up to The fix removes the logout freeze by making disconnect asynchronous, but teardown can now outlive client removal and overlap with an immediately created replacement client, potentially leaving the previous connection active longer than expected. Merge should wait for an owned completion or cancellation policy, and the regression test should use the repository-required test base. Sequence Diagram(s)sequenceDiagram
participant MainLooper
participant StreamVideoClient
participant DispatcherProviderIO
participant StreamClient
MainLooper->>StreamVideoClient: cleanup()
StreamVideoClient->>DispatcherProviderIO: Launch disconnect
DispatcherProviderIO->>StreamClient: disconnect()
Suggested reviewers: Poem
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Description checkExplanation The description covers the goal, implementation, testing, issue reference, and lack of UI changes. It omits the contributor and reviewer checklist sections from the template, but the core change and validation details are complete.
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Actionable comments posted: 2
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Inline comments:
In
`@stream-video-android-core/src/main/kotlin/io/getstream/video/android/core/StreamVideoClient.kt`:
- Line 294: Update the detached disconnect work around
CoroutineScope(SupervisorJob() + DispatcherProvider.IO) to retain its shutdown
Job in a dedicated owner, and have cleanup() cancel that owner so suspended
streamClient.disconnect() work cannot outlive teardown. Preserve the existing
non-blocking behavior while defining the owner’s cancellation policy.
In
`@stream-video-android-core/src/test/kotlin/io/getstream/video/android/core/StreamVideoClientCleanupTest.kt`:
- Line 47: Update the StreamVideoClientCleanupTest class declaration to extend
TestBase, preserving its existing test behavior and Robolectric compatibility.
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📒 Files selected for processing (2)
stream-video-android-core/src/main/kotlin/io/getstream/video/android/core/StreamVideoClient.ktstream-video-android-core/src/test/kotlin/io/getstream/video/android/core/StreamVideoClientCleanupTest.kt
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develop still has the identical serviceIntent.let { context.stopService(serviceIntent) } at StreamVideoClient.kt:267 — same swallowed NPE, and nothing merges develop-v2 back into it. Can you check develop and port this half separately?
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Good catch, confirmed: develop has the same block and there is no merge back from develop-v2. Ported it here: #1794. I kept the replacement block identical to this PR's version so the next develop to develop-v2 merge does not conflict.
3 participants
Goal
Fix the 5 second UI freeze on logout that makes the E2E tests on the develop-v2 merge PR #1790 fail deterministically on the sign-in screen waits, and remove a swallowed NPE in the same code path.
Resolves AND-1466.
Implementation
StreamVideoClient.cleanup()bridged the suspendstreamClient.disconnect()withrunBlocking. When an app callsStreamVideo.removeClient()from the main thread (the demo app's logout does), this self-deadlocks:disconnect()stops its lifecycle monitor throughrunOnMainLooper, which posts to the main looper and blocks on a CountDownLatch with a 5 second safety timeout (stream-android-coreThreading.kt). The main looper is parked by therunBlocking, so the post never runs and every logout freezes the UI for the full 5 seconds. As a side effect the lifecycle observer was never removed.Changes in
StreamVideoClient.cleanup():runBlocking. Other threads keep the existing synchronous ordering. The main-looper check is null-guarded because plain JVM unit tests get null loopers (isReturnDefaultValues = true).buildStopIntent(...)legitimately returns null when the service is not running; the result is now handled with?.letinstead of passing null intocontext.stopService(...), which threw a swallowedNullPointerExceptionon every logout without a running call service.🎨 UI Changes
No visual changes. Behavior change: logout no longer freezes the UI for 5 seconds.
Testing
StreamVideoClientCleanupTestrunscleanup()on a real main-looper thread against a mocked 6 second disconnect: it fails on the old code ("took 6218ms") and passes with the fix while verifying the disconnect is still dispatched.:stream-video-android-core:testDebugUnitTestsuite passes.CallLifecycleTests#testUserReentersTheCallAsAnotherUsernow gets past the sign-in wait that failed on both CI attempts. It then hits a separate demo-app re-login race, tracked as AND-1467.Summary by CodeRabbit
Bug Fixes
Tests