log4j spring boot 4 autoinstrumentation

[lbloder]

📜 Description

💡 Motivation and Context

resolves: #5035

💚 How did you test it?

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[sentry]

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.54.0 (1)	release

⚙️ sentry-android Build Distribution Settings

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	315.90 ms	367.98 ms	52.08 ms
Size	0 B	0 B	0 B

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
a416a65	333.78 ms	410.37 ms	76.59 ms
2195398	319.02 ms	342.38 ms	23.36 ms
62b579c	349.26 ms	426.26 ms	77.00 ms
bbc35bb	324.88 ms	425.73 ms	100.85 ms
e59e22a	374.68 ms	442.14 ms	67.46 ms
806307f	357.85 ms	424.64 ms	66.79 ms
62b579c	312.88 ms	361.57 ms	48.70 ms
8687935	332.52 ms	362.23 ms	29.71 ms
1edbdfa	364.77 ms	450.29 ms	85.52 ms
2195398	322.52 ms	361.91 ms	39.39 ms

App size

Revision	Plain	With Sentry	Diff
a416a65	1.58 MiB	2.12 MiB	555.26 KiB
2195398	0 B	0 B	0 B
62b579c	0 B	0 B	0 B
bbc35bb	1.58 MiB	2.12 MiB	553.01 KiB
e59e22a	1.58 MiB	2.20 MiB	635.34 KiB
806307f	1.58 MiB	2.10 MiB	533.42 KiB
62b579c	0 B	0 B	0 B
8687935	1.58 MiB	2.19 MiB	619.17 KiB
1edbdfa	1.58 MiB	2.20 MiB	635.34 KiB
2195398	0 B	0 B	0 B

[lbloder]

@sentry review

[lbloder]

cursor review

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

Comment @cursor review or bugbot run to trigger another review on this PR

^{Reviewed by Cursor Bugbot for commit 7d76aa5. Configure here.}

[lbloder]

@adinauer should we add a separate spring-boot-log4j sample for e2e tets?

[adinauer]

Mostly LGTM, just needs to be opt-in for now, to not break manual setups on upgrade. Separate sample + E2E tests sounds good

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

There are 2 total unresolved issues (including 1 from previous review).

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit 4362c07. Configure here.}

[lbloder]

@adinauer added the sample and e2e tests

[adinauer]

LGTM!