fix(session-replay): Leave captureReplay logic to the native implementation #5243
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@romtsn I took the liberty of adding you as a reviewer on this one since you might have more context on how things work on the native side or a suggestion for a better approach 🙏 |
![seer-by-sentry[bot]](https://avatars.githubusercontent.com/in/801464?s=60&v=4){kind=small}
Contributor
Android (legacy) Performance metrics 🚀
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| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| c7f264b | 434.98 ms | 452.96 ms | 17.98 ms |
| bfe454a+dirty | 573.44 ms | 579.46 ms | 6.02 ms |
| 534ba8c | 484.00 ms | 499.93 ms | 15.93 ms |
| 0b64753+dirty | 448.67 ms | 474.61 ms | 25.94 ms |
| 64cd15c | 439.02 ms | 427.63 ms | -11.39 ms |
| 459a438+dirty | 417.09 ms | 406.52 ms | -10.57 ms |
| d751a5d+dirty | 434.24 ms | 486.08 ms | 51.84 ms |
| 955f2eb+dirty | 422.74 ms | 410.19 ms | -12.55 ms |
| 8d89cc9+dirty | 537.83 ms | 536.02 ms | -1.81 ms |
| a0b15d6 | 423.06 ms | 437.77 ms | 14.71 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| c7f264b | 17.75 MiB | 19.68 MiB | 1.94 MiB |
| bfe454a+dirty | 17.75 MiB | 19.69 MiB | 1.94 MiB |
| 534ba8c | 17.75 MiB | 20.15 MiB | 2.41 MiB |
| 0b64753+dirty | 17.75 MiB | 19.70 MiB | 1.95 MiB |
| 64cd15c | 17.75 MiB | 20.15 MiB | 2.41 MiB |
| 459a438+dirty | 17.75 MiB | 19.70 MiB | 1.95 MiB |
| d751a5d+dirty | 17.75 MiB | 19.68 MiB | 1.94 MiB |
| 955f2eb+dirty | 17.75 MiB | 19.70 MiB | 1.95 MiB |
| 8d89cc9+dirty | 17.75 MiB | 19.68 MiB | 1.94 MiB |
| a0b15d6 | 17.75 MiB | 20.15 MiB | 2.41 MiB |
Contributor
Android (new) Performance metrics 🚀
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| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| c1573b3+dirty | 355.65 ms | 448.82 ms | 93.17 ms |
| 818a608+dirty | 350.29 ms | 397.38 ms | 47.09 ms |
| d916aa3+dirty | 411.72 ms | 451.76 ms | 40.03 ms |
| a0b15d6+dirty | 414.33 ms | 448.85 ms | 34.52 ms |
| bfe454a+dirty | 372.42 ms | 424.52 ms | 52.10 ms |
| af9331b+dirty | 374.42 ms | 425.68 ms | 51.26 ms |
| 0b64753+dirty | 358.55 ms | 429.16 ms | 70.61 ms |
| c9e95bd+dirty | 339.32 ms | 401.24 ms | 61.92 ms |
| 459a438+dirty | 359.50 ms | 390.53 ms | 31.03 ms |
| d751a5d+dirty | 341.61 ms | 403.06 ms | 61.45 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| c1573b3+dirty | 7.15 MiB | 8.42 MiB | 1.27 MiB |
| 818a608+dirty | 7.15 MiB | 8.41 MiB | 1.26 MiB |
| d916aa3+dirty | 7.15 MiB | 8.42 MiB | 1.27 MiB |
| a0b15d6+dirty | 7.15 MiB | 8.42 MiB | 1.27 MiB |
| bfe454a+dirty | 7.15 MiB | 8.42 MiB | 1.26 MiB |
| af9331b+dirty | 7.15 MiB | 8.41 MiB | 1.26 MiB |
| 0b64753+dirty | 7.15 MiB | 8.42 MiB | 1.27 MiB |
| c9e95bd+dirty | 7.15 MiB | 8.41 MiB | 1.26 MiB |
| 459a438+dirty | 7.15 MiB | 8.42 MiB | 1.27 MiB |
| d751a5d+dirty | 7.15 MiB | 8.41 MiB | 1.26 MiB |
Contributor
iOS (new) Performance metrics 🚀
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| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 7be1f99+dirty | 1222.43 ms | 1217.15 ms | -5.28 ms |
| eb07ba3+dirty | 1214.49 ms | 1221.59 ms | 7.10 ms |
| 5c16cdc+dirty | 1235.67 ms | 1241.18 ms | 5.51 ms |
| 69602ce+dirty | 1230.59 ms | 1230.84 ms | 0.24 ms |
| 8a4ce6f+dirty | 1232.80 ms | 1223.80 ms | -9.00 ms |
| 95aaf8a+dirty | 1206.83 ms | 1213.65 ms | 6.81 ms |
| 98f632c+dirty | 1221.38 ms | 1229.26 ms | 7.88 ms |
| 3e0a5f9+dirty | 1233.65 ms | 1239.10 ms | 5.45 ms |
| ba75c7c+dirty | 1236.14 ms | 1240.69 ms | 4.55 ms |
| 276d348+dirty | 1222.10 ms | 1229.02 ms | 6.92 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 7be1f99+dirty | 3.19 MiB | 4.38 MiB | 1.19 MiB |
| eb07ba3+dirty | 3.19 MiB | 4.38 MiB | 1.19 MiB |
| 5c16cdc+dirty | 3.19 MiB | 4.53 MiB | 1.34 MiB |
| 69602ce+dirty | 3.19 MiB | 4.48 MiB | 1.29 MiB |
| 8a4ce6f+dirty | 3.19 MiB | 4.53 MiB | 1.34 MiB |
| 95aaf8a+dirty | 3.19 MiB | 4.44 MiB | 1.25 MiB |
| 98f632c+dirty | 3.19 MiB | 4.38 MiB | 1.19 MiB |
| 3e0a5f9+dirty | 3.19 MiB | 4.38 MiB | 1.19 MiB |
| ba75c7c+dirty | 3.19 MiB | 4.38 MiB | 1.19 MiB |
| 276d348+dirty | 3.19 MiB | 4.54 MiB | 1.36 MiB |
Contributor
iOS (legacy) Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 7be1f99+dirty | 1226.69 ms | 1217.76 ms | -8.93 ms |
| eb07ba3+dirty | 1222.46 ms | 1220.37 ms | -2.08 ms |
| 5c16cdc+dirty | 1209.32 ms | 1210.67 ms | 1.35 ms |
| 69602ce+dirty | 1235.65 ms | 1230.82 ms | -4.83 ms |
| 8a4ce6f+dirty | 1221.31 ms | 1219.84 ms | -1.47 ms |
| 95aaf8a+dirty | 1234.78 ms | 1241.94 ms | 7.16 ms |
| 98f632c+dirty | 1236.40 ms | 1241.62 ms | 5.22 ms |
| 3e0a5f9+dirty | 1226.94 ms | 1230.02 ms | 3.08 ms |
| ba75c7c+dirty | 1235.86 ms | 1226.45 ms | -9.41 ms |
| 276d348+dirty | 1224.22 ms | 1227.38 ms | 3.16 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 7be1f99+dirty | 2.63 MiB | 3.81 MiB | 1.18 MiB |
| eb07ba3+dirty | 2.63 MiB | 3.81 MiB | 1.18 MiB |
| 5c16cdc+dirty | 2.63 MiB | 3.96 MiB | 1.33 MiB |
| 69602ce+dirty | 2.63 MiB | 3.91 MiB | 1.28 MiB |
| 8a4ce6f+dirty | 2.63 MiB | 3.96 MiB | 1.33 MiB |
| 95aaf8a+dirty | 2.63 MiB | 3.87 MiB | 1.24 MiB |
| 98f632c+dirty | 2.63 MiB | 3.81 MiB | 1.18 MiB |
| 3e0a5f9+dirty | 2.63 MiB | 3.81 MiB | 1.18 MiB |
| ba75c7c+dirty | 2.63 MiB | 3.81 MiB | 1.18 MiB |
| 276d348+dirty | 2.63 MiB | 3.98 MiB | 1.34 MiB |
romtsn
reviewed
Oct 7, 2025
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| const recordingReplayId = NATIVE.getCurrentReplayId(); | ||
| if (recordingReplayId) { | ||
| if (!hardCrash && recordingReplayId) { |
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nice find! I'm actually not even sure if we need this if altogether.. When I look at the native implementations, it seems that they take care of not doing anything if the replay is running in session mode (=replay_id is on the scope).
Perhaps we should just rely on the native SDKs handling that here?
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the only important thing we have to make sure is that isHardCrash actually returns true when the program is about to terminate - this is needed on Android so we don't try to send anything and potentially lose segments due to the termination
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Thank you for the feedback @romtsn 🙇
Perhaps we should just rely on the native SDKs handling that here?
Good point 👍 I've removed the unneeded RN logic with c467718. Only kept the if statements to keep the logging consistent with the previous versions. As expected I didn't notice any change in behavior with this change.
the only important thing we have to make sure is that isHardCrash actually returns true when the program is about to terminate
The function uses a bit of a heuristic approach but it worked as expected in my tests and it seems to have served us well till now.
antonis
changed the title
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📢 Type of change
📜 Description
Leaves captureReplay logic to the native implementation
💡 Motivation and Context
Fixes #5074
When
replaysSessionSampleRate: 0.0, and with the steps below, I always got no recording attached to the event though I should have given thatreplaysOnErrorSampleRate: 1.0. I wasn't able to associate this behavior with thereactNavigationIntegrationas the above issue states but the fix seems to make the the SR recording more reliable.💚 How did you test it?
replaysSessionSampleRate: 0.0in the sample app. LeavereplaysOnErrorSampleRate: 1.0Uncaught Thrown Error📝 Checklist
sendDefaultPIIis enabled🔮 Next steps