fix(ai): add message truncation to litellm

[shellmayr]

• Add gen_ai.request.message truncation to LiteLLM as introduced in fix(ai): introduce message truncation for openai #4946

Contributes to TET-1208

[linear]

TET-1208 Python SDK: truncate gen_ai messages

[cursor]

Bug: Chat Span Index Assumption Error

The test assumes the chat span is at index "0" in the metadata path tx["_meta"]["spans"]["0"]["data"], but the chat span is retrieved by filtering the spans list with chat_spans = [span for span in tx.get("spans", []) if span.get("op") == OP.GEN_AI_CHAT]. There's no guarantee the filtered chat span is at index 0 in the original spans array. The test should either use the actual index of the chat span in the original spans list, or the transaction should be set up to ensure only one span exists.

[cursor]

Bug: Incorrect Empty String Key in Metadata Path

The metadata path contains an incorrect empty string key. The assertion tx["_meta"]["spans"]["0"]["data"]["gen_ai.request.messages"][""]["len"] accesses an intermediate empty string key [""] between the field name and the "len" metadata. The correct path should be tx["_meta"]["spans"]["0"]["data"]["gen_ai.request.messages"]["len"] without the empty string key.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 83.97%. Comparing base (3d026cd) to head (dd4f521).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
sentry_sdk/integrations/litellm.py	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@ Coverage Diff @@## master #4973 +/- ## ======================================= Coverage 83.97% 83.97% ======================================= Files 165 165 Lines 17082 17085 +3 Branches 3000 3001 +1 ======================================= + Hits 14344 14347 +3  Misses 1839 1839 Partials 899 899 

Files with missing lines	Coverage Δ
sentry_sdk/integrations/litellm.py	77.47% <80.00%> (-0.31%)	⬇️

... and 1 file with indirect coverage changes