Add ci workflow for app size analysis #3368

buenaflor · 2025-11-25T20:16:44Z

📜 Description

Adds a CI workflow to enable Sentry Size Analysis for the flutter/example app. This workflow builds production iOS (XCArchive) and Android (AAB) artifacts and uploads them to Sentry for size trend monitoring.

💡 Motivation and Context

This change implements Sentry's Size Analysis feature to proactively monitor the sentry-flutter example app's size in CI. The goal is to track build size trends. This follows the official Sentry documentation for integrating Size Analysis into CI.

Example of how it looks like:

Android

iOS

📝 Checklist

I reviewed submitted code
I added tests to verify changes
No new PII added or SDK only sends newly added PII if sendDefaultPii is enabled
I updated the docs if needed
All tests passing
No breaking changes

🔮 Next steps

Monitor initial workflow runs to ensure successful uploads and correct data visibility in Sentry's Size Analysis feature. Consider adding size budget checks in future iterations.

#skip-changelog

This commit introduces a new GitHub Actions workflow to perform size analysis for Android and iOS builds using Sentry. The workflow is triggered on push to main/release branches and pull requests. It builds the app bundles/archives, uploads them to Sentry, and includes information about the commit SHA, repository, and branch for comparison. Co-authored-by: giancarlo.buenaflor <[email protected]>

cursor · 2025-11-25T20:16:45Z

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
_{Learn more about Cursor Agents}

github-actions · 2025-11-25T20:17:08Z

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against 1b45278

codecov · 2025-11-27T14:56:18Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.33%. Comparing base (20faa47) to head (1b45278).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3368      +/-   ##
==========================================
+ Coverage   88.31%   90.33%   +2.01%     
==========================================
  Files         291       95     -196     
  Lines        9957     3198    -6759     
==========================================
- Hits         8794     2889    -5905     
+ Misses       1163      309     -854

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

github-actions · 2025-11-27T15:01:30Z

Android Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	351.65 ms	372.72 ms	21.07 ms
Size	13.93 MiB	15.18 MiB	1.25 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`73a3c38`	478.18 ms	526.62 ms	48.44 ms
`40c8f93`	417.10 ms	482.60 ms	65.50 ms
`8541716`	437.14 ms	443.65 ms	6.51 ms
`d3fb366`	391.49 ms	385.85 ms	-5.64 ms
`2cf9161`	454.12 ms	512.67 ms	58.55 ms
`1f639ee`	429.98 ms	476.60 ms	46.62 ms
`b6c8720`	457.41 ms	519.04 ms	61.63 ms
`a69a51f`	437.18 ms	450.60 ms	13.42 ms
`6bcdc99`	440.23 ms	435.77 ms	-4.46 ms
`393f8ec`	360.07 ms	362.70 ms	2.64 ms

App size

Revision	Plain	With Sentry	Diff
`73a3c38`	6.54 MiB	7.69 MiB	1.15 MiB
`40c8f93`	13.93 MiB	15.00 MiB	1.06 MiB
`8541716`	13.93 MiB	15.00 MiB	1.06 MiB
`d3fb366`	13.93 MiB	15.06 MiB	1.13 MiB
`2cf9161`	6.54 MiB	7.70 MiB	1.16 MiB
`1f639ee`	13.93 MiB	15.00 MiB	1.06 MiB
`b6c8720`	6.54 MiB	7.69 MiB	1.15 MiB
`a69a51f`	13.93 MiB	15.06 MiB	1.13 MiB
`6bcdc99`	13.93 MiB	15.00 MiB	1.06 MiB
`393f8ec`	13.93 MiB	15.06 MiB	1.13 MiB

github-actions · 2025-11-27T15:05:37Z

iOS Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	1281.71 ms	1279.98 ms	-1.73 ms
Size	5.53 MiB	6.02 MiB	501.33 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`c0dde50`	1268.90 ms	1275.61 ms	6.71 ms
`1f639ee`	1252.43 ms	1257.82 ms	5.38 ms
`7cfee3b`	1260.90 ms	1273.14 ms	12.24 ms
`192b44c`	1269.08 ms	1275.52 ms	6.44 ms
`7b21e8b`	1256.79 ms	1267.12 ms	10.33 ms
`6f47800`	1247.52 ms	1259.37 ms	11.85 ms
`ad121c0`	1275.04 ms	1280.59 ms	5.55 ms
`e04b24b`	1230.22 ms	1233.90 ms	3.67 ms
`819c1e7`	1250.59 ms	1249.08 ms	-1.51 ms
`d0aa4b6`	1268.23 ms	1268.39 ms	0.15 ms

App size

Revision	Plain	With Sentry	Diff
`c0dde50`	5.53 MiB	6.01 MiB	488.14 KiB
`1f639ee`	5.53 MiB	6.00 MiB	479.95 KiB
`7cfee3b`	20.70 MiB	22.46 MiB	1.75 MiB
`192b44c`	5.53 MiB	5.96 MiB	444.33 KiB
`7b21e8b`	5.53 MiB	6.00 MiB	479.96 KiB
`6f47800`	7.86 MiB	9.44 MiB	1.58 MiB
`ad121c0`	5.53 MiB	6.01 MiB	488.11 KiB
`e04b24b`	5.53 MiB	6.00 MiB	480.00 KiB
`819c1e7`	5.53 MiB	6.00 MiB	479.96 KiB
`d0aa4b6`	5.53 MiB	6.02 MiB	502.04 KiB

sentry · 2025-11-28T14:31:05Z

packages/flutter/example/android/app/src/main/kotlin/io/sentry/samples/flutter/MainActivity.kt

@@ -1,4 +1,4 @@
-package io.sentry.samples.flutter
+package io.sentry.flutter.sample


Bug: MainActivity.kt package declaration io.sentry.flutter.sample mismatches its directory io/sentry/samples/flutter/.
_{Severity: CRITICAL | Confidence: High}

🔍 Detailed Analysis

The MainActivity.kt file's package declaration io.sentry.flutter.sample does not match its physical directory structure io/sentry/samples/flutter/. This fundamental mismatch will cause the Kotlin compiler to reject the code, leading to an immediate failure of the Android build step in the CI workflow. This prevents the successful creation of the Android AAB artifact.

💡 Suggested Fix

Either move MainActivity.kt to io/sentry/flutter/sample/ or revert its package declaration to io.sentry.samples.flutter.

🤖 Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not valid. Location: packages/flutter/example/android/app/src/main/kotlin/io/sentry/samples/flutter/MainActivity.kt#L1 Potential issue: The `MainActivity.kt` file's package declaration `io.sentry.flutter.sample` does not match its physical directory structure `io/sentry/samples/flutter/`. This fundamental mismatch will cause the Kotlin compiler to reject the code, leading to an immediate failure of the Android build step in the CI workflow. This prevents the successful creation of the Android AAB artifact.

_{Did we get this right? 👍 / 👎 to inform future reviews.}
_{Reference ID: 4268466}

sentry · 2025-11-28T14:31:05Z

packages/flutter/test/android_platform_exception_event_processor_test.dart

-	at io.sentry.samples.flutter.MainActivity.lambda\$TiSaAm1LIEmKLVswI4BlR_5sw5Y(Unknown Source:0)
-	at io.sentry.samples.flutter.-\$\$Lambda\$MainActivity\$TiSaAm1LIEmKLVswI4BlR_5sw5Y.onMethodCall(Unknown Source:2)
+	at io.sentry.flutter.sample.MainActivity.configureFlutterEngine\$lambda-0(MainActivity.kt:40)
+	at io.sentry.flutter.sample.MainActivity.lambda\$TiSaAm1LIEmKLVswI4BlR_5sw5Y(Unknown Source:0)


Bug: Old package ID io.sentry.samples.flutter remains in AppFrameworkInfo.plist and run.sh.
_{Severity: HIGH | Confidence: High}

🔍 Detailed Analysis

The old package ID io.sentry.samples.flutter is still referenced in packages/flutter/example/ios/Flutter/AppFrameworkInfo.plist and packages/flutter/example/run.sh. This indicates an incomplete update of the package ID across the project, which could lead to build failures or incorrect application behavior on iOS and during script execution.

💡 Suggested Fix

Update all remaining references of io.sentry.samples.flutter to the new package ID io.sentry.flutter.sample in AppFrameworkInfo.plist and run.sh.

🤖 Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not valid. Location: packages/flutter/test/android_platform_exception_event_processor_test.dart#L247 Potential issue: The old package ID `io.sentry.samples.flutter` is still referenced in `packages/flutter/example/ios/Flutter/AppFrameworkInfo.plist` and `packages/flutter/example/run.sh`. This indicates an incomplete update of the package ID across the project, which could lead to build failures or incorrect application behavior on iOS and during script execution.

_{Did we get this right? 👍 / 👎 to inform future reviews.}
_{Reference ID: 4268466}

buenaflor and others added 6 commits November 25, 2025 21:44

Update

8425109

Update

83b9a61

Update

e3a5a47

Update

b7ef080

Change APK build step to Appbundle in workflow

9872f07

Rename upload step for Android bundle in workflow

ac4fd03

buenaflor marked this pull request as ready for review November 26, 2025 16:07

buenaflor requested review from denrase and stefanosiano as code owners November 26, 2025 16:07

buenaflor marked this pull request as draft November 26, 2025 16:26

Update

9b0ab2f

buenaflor added 2 commits November 28, 2025 13:33

Update

806dd0b

Update

1b45278

buenaflor marked this pull request as ready for review November 28, 2025 14:29

sentry bot reviewed Nov 28, 2025

View reviewed changes

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Uh oh!

Add ci workflow for app size analysis #3368

Add ci workflow for app size analysis #3368

Uh oh!

buenaflor commented Nov 25, 2025 •

edited

Loading

Uh oh!

cursor bot commented Nov 25, 2025

Uh oh!

github-actions bot commented Nov 25, 2025 •

edited

Loading

Uh oh!

codecov bot commented Nov 27, 2025 •

edited

Loading

Uh oh!

github-actions bot commented Nov 27, 2025

Baseline results on branch: main

Startup times

App size

Uh oh!

github-actions bot commented Nov 27, 2025

Baseline results on branch: main

Startup times

App size

Uh oh!

sentry bot Nov 28, 2025

Uh oh!

sentry bot Nov 28, 2025

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

		@@ -1,4 +1,4 @@
		package io.sentry.samples.flutter
		package io.sentry.flutter.sample

Uh oh!

Add ci workflow for app size analysis #3368

Are you sure you want to change the base?

Add ci workflow for app size analysis #3368

Uh oh!

Conversation

buenaflor commented Nov 25, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

📜 Description

💡 Motivation and Context

Android

iOS

📝 Checklist

🔮 Next steps

Uh oh!

cursor bot commented Nov 25, 2025

Uh oh!

github-actions bot commented Nov 25, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

codecov bot commented Nov 27, 2025 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Codecov Report

Uh oh!

github-actions bot commented Nov 27, 2025

Android Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

Uh oh!

github-actions bot commented Nov 27, 2025

iOS Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

Uh oh!

sentry bot Nov 28, 2025

Choose a reason for hiding this comment

Uh oh!

sentry bot Nov 28, 2025

Choose a reason for hiding this comment

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

buenaflor commented Nov 25, 2025 •

edited

Loading

github-actions bot commented Nov 25, 2025 •

edited

Loading

codecov bot commented Nov 27, 2025 •

edited

Loading