Improve ANRv2 implementation based on customer feedback

[romtsn]

📜 Description

The PR introduces various improvement to the existing ANRv2 implementation based on customer feedback, namely:

• Adds a rule to keep ApplicationNotResponding class from obfuscation so it doesn't look ugly in the issue stream
• Adds an option setReportHistoricalAnrs, when enabled it will report all of the ANRs from the getHistoricalExitReasons list. By default, the SDK only reports and enriches the latest ANR and only this one counts towards ANR rate. Hence, this reduces the noise quite a bit, but still leaves the possibility to get all of the ANR reports from the past. Worth noting that once the SDK has been updated to the version with the new implementation, we won't need this feature, because we'll always read the latest ANR on the next app restart. These ANRs are reported with the HistoricalAppExitInfo mechanism for distinction
• Adds an option to send the thread dump plain text as an attachment
• If getTraceInputStream returns null, we do not report an ANR event because it's pretty much useless without the thread dump and makes it look confusing for our customers
• If we were not able to parse ANR thread dump due to regex issues or some exception, we'll send an event with a message instead, telling customers to use the flag to send raw thread dump and also let us know about this issue
• Adds null-check for span context values (I wasn't able to reproduce it, but sometimes they get reported as nulls, so this is just defensive here)
• Enhances regex patterns for native stackframes

The message looks like this:

The ANR thread dump attachment looks like this:

💡 Motivation and Context

💚 How did you test it?

Manually and automated

📝 Checklist

• I reviewed the submitted code.
• 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.
• 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

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	316.14 ms	357.92 ms	41.78 ms
Size	1.72 MiB	2.28 MiB	573.38 KiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
496bdfd	301.22 ms	343.96 ms	42.73 ms
8820c5c	330.60 ms	416.86 ms	86.26 ms
9246ed4	281.79 ms	352.08 ms	70.29 ms
496bdfd	272.86 ms	407.33 ms	134.48 ms

App size

Revision	Plain	With Sentry	Diff
496bdfd	1.72 MiB	2.28 MiB	571.82 KiB
8820c5c	1.72 MiB	2.28 MiB	571.82 KiB
9246ed4	1.72 MiB	2.28 MiB	572.22 KiB
496bdfd	1.72 MiB	2.28 MiB	571.82 KiB

Previous results on branch: rz/enh/anr-v2-feedback

Startup times

Revision	Plain	With Sentry	Diff
608561f	302.62 ms	368.96 ms	66.33 ms

App size

Revision	Plain	With Sentry	Diff
608561f	1.72 MiB	2.28 MiB	573.38 KiB

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (9246ed4) 81.14% compared to head (fa1e3c1) 81.15%.

❗ Current head fa1e3c1 differs from pull request most recent head 1e585ee. Consider uploading reports for the commit 1e585ee to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #2792   +/-   ##
=========================================
  Coverage     81.14%   81.15%           
- Complexity     4497     4501    +4     
=========================================
  Files           348      348           
  Lines         16677    16685    +8     
  Branches       2267     2268    +1     
=========================================
+ Hits          13532    13540    +8     
  Misses         2198     2198           
  Partials        947      947           

Impacted Files	Coverage Δ
sentry/src/main/java/io/sentry/Attachment.java	100.00% <100.00%> (ø)
sentry/src/main/java/io/sentry/Hint.java	93.84% <100.00%> (+0.40%)	⬆️
sentry/src/main/java/io/sentry/SentryClient.java	87.58% <100.00%> (+0.08%)	⬆️
...y/src/main/java/io/sentry/cache/EnvelopeCache.java	65.36% <100.00%> (ø)

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[markushi]

Nice improvements, LGTM!