Crysmags/gemini rebase

[crysmags]

What does this PR do?

This is to add support for Google's GenAi

[github-actions]

Overall package size

Self size: 13.52 MB
Deduped: 113.71 MB
No deduping: 128.73 MB

Dependency sizes

| name | version | self size | total size | |------|---------|-----------|------------| | @datadog/libdatadog | 0.7.0 | 35.02 MB | 35.02 MB | | @datadog/native-appsec | 10.3.0 | 20.73 MB | 20.74 MB | | @datadog/pprof | 5.12.0 | 11.19 MB | 11.57 MB | | @datadog/native-iast-taint-tracking | 4.1.0 | 9.01 MB | 9.02 MB | | @opentelemetry/resources | 1.30.1 | 557.67 kB | 7.71 MB | | @opentelemetry/core | 1.30.1 | 908.66 kB | 7.16 MB | | protobufjs | 7.5.4 | 2.95 MB | 5.83 MB | | @datadog/wasm-js-rewriter | 5.0.1 | 2.82 MB | 3.53 MB | | @datadog/native-metrics | 3.1.1 | 1.02 MB | 1.43 MB | | @opentelemetry/api-logs | 0.208.0 | 199.48 kB | 1.42 MB | | @opentelemetry/api | 1.9.0 | 1.22 MB | 1.22 MB | | jsonpath-plus | 10.3.0 | 617.18 kB | 1.08 MB | | import-in-the-middle | 1.15.0 | 127.66 kB | 856.24 kB | | lru-cache | 10.4.3 | 804.3 kB | 804.3 kB | | @datadog/openfeature-node-server | 0.2.0 | 118.51 kB | 437.19 kB | | opentracing | 0.14.7 | 194.81 kB | 194.81 kB | | source-map | 0.7.6 | 185.63 kB | 185.63 kB | | pprof-format | 2.2.1 | 163.06 kB | 163.06 kB | | @datadog/sketches-js | 2.1.1 | 109.9 kB | 109.9 kB | | @isaacs/ttlcache | 2.1.3 | 90.79 kB | 90.79 kB | | lodash.sortby | 4.7.0 | 75.76 kB | 75.76 kB | | ignore | 7.0.5 | 63.38 kB | 63.38 kB | | istanbul-lib-coverage | 3.2.2 | 34.37 kB | 34.37 kB | | rfdc | 1.4.1 | 27.15 kB | 27.15 kB | | dc-polyfill | 0.1.10 | 26.73 kB | 26.73 kB | | tlhunter-sorted-set | 0.1.0 | 24.94 kB | 24.94 kB | | shell-quote | 1.8.3 | 23.74 kB | 23.74 kB | | limiter | 1.1.5 | 23.17 kB | 23.17 kB | | retry | 0.13.1 | 18.85 kB | 18.85 kB | | semifies | 1.0.0 | 15.84 kB | 15.84 kB | | jest-docblock | 29.7.0 | 8.99 kB | 12.76 kB | | crypto-randomuuid | 1.0.0 | 11.18 kB | 11.18 kB | | ttl-set | 1.0.0 | 4.61 kB | 9.69 kB | | mutexify | 1.4.0 | 5.71 kB | 8.74 kB | | path-to-regexp | 0.1.12 | 6.6 kB | 6.6 kB | | module-details-from-path | 1.0.4 | 3.96 kB | 3.96 kB | | escape-string-regexp | 5.0.0 | 3.66 kB | 3.66 kB |

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[codecov]

Codecov Report

❌ Patch coverage is 66.99507% with 67 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.79%. Comparing base (0bb1f17) to head (2bcab5a).
⚠️ Report is 9 commits behind head on master.

Files with missing lines	Patch %	Lines
packages/dd-trace/src/llmobs/plugins/genai/util.js	60.92%	59 Missing ⚠️
...ackages/dd-trace/src/llmobs/plugins/genai/index.js	91.48%	4 Missing ⚠️
...ages/dd-trace/src/service-naming/schemas/v0/web.js	0.00%	2 Missing ⚠️
...ages/datadog-instrumentations/src/helpers/hooks.js	0.00%	1 Missing ⚠️
packages/dd-trace/src/plugins/index.js	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6933      +/-   ##
==========================================
- Coverage   84.94%   84.79%   -0.15%     
==========================================
  Files         514      516       +2     
  Lines       21754    21991     +237     
==========================================
+ Hits        18478    18648     +170     
- Misses       3276     3343      +67     

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[pr-commenter]

Benchmarks

Benchmark execution time: 2025-12-05 15:48:16

Comparing candidate commit 2bcab5a in PR branch crysmags/gemini-rebase with baseline commit 0bb1f17 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 294 metrics, 26 unstable metrics.

[sabrenner]

just gave it an initial pass, and mostly just cleanup comments plus a couple of questions!

one thing for file hierarchy that might help with the readability of the llm observability genai plugin is if we split it into two files - so making it a genai folder instead of genai.js, and then having index.js with the GenAiLLMObsPlugin class, and a utils.js for all the private utility functions that are currently in the class that don't rely on this. That way, the GenAiLLMObsPlugin is just calling the helper functions and using their outputs with the tagger. wdyt?

if that sounds good i think we have a similar scenario for the ai plugin: https://github.com/DataDog/dd-trace-js/tree/master/packages/dd-trace/src/llmobs/plugins/ai

[sabrenner]

all looks good to me just some last couple cleanup comments/making some things constants at the top of files. otherwise good to approve after!

[sabrenner]

🚢