feat(ingest): add Google Drive ingestion source

[pedro93]

Summary

Adds a new google-drive ingestion source that ingests Google Docs (and optionally Google Sheets / Slides) from Google Drive as DataHub Document entities, with full-text markdown content and optional embeddings for semantic search. It follows the existing doc-source pattern (Confluence / Notion / GitHub Documents).

Highlights:

• Auth: service-account key (file or inline JSON) or Application Default Credentials.
• Scope: crawl specific folder_ids (recursively) or all accessible files; toggles for Docs / Sheets / Slides; optional folder-hierarchy materialisation.
• Content: native markdown export with an html2text fallback.
• Stateful ingestion with stale-entity-removal (deletion detection) wired via StaleEntityRemovalHandler.
• Semantic search: optional chunking + embeddings.

Changes

• New source: metadata-ingestion/src/datahub/ingestion/source/google_drive/ (google_drive_config.py, google_drive_report.py, google_drive_source.py).
• setup.py plugin + entry point (google-drive) and dependency set; regenerated pyproject.toml, uv.lock, constraints.txt, and the autogenerated connector registry.
• Unit tests: metadata-ingestion/tests/unit/ingestion/source/google_drive/test_google_drive_source.py (mocked Drive API).
• Connector docs: metadata-ingestion/docs/sources/google-drive/.

Test plan

• pytest tests/unit/ingestion/source/google_drive/ — 37 passing (config validation, folder-URL normalisation, dedup/trashed filtering, folder-ancestor walk, document/property building, content-length handling).
• ruff check / ruff format --check clean; mypy 0 errors.
• :metadata-ingestion:lint, :checkLockFile, :connectorRegistry, :lineageGen all pass.

Checklist

• PR conforms to the Contributing Guideline (PR Title Format)
• Tests added
• Docs added (connector docs under metadata-ingestion/docs/sources/google-drive/)
• No breaking changes (new optional source; no updating-datahub.md entry needed)

🤖 Generated with Claude Code

[codecov]

Codecov Report

❌ Patch coverage is 96.09856% with 19 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...gestion/source/google_drive/google_drive_source.py	95.53%	18 Missing ⚠️
...gestion/source/google_drive/google_drive_config.py	97.87%	1 Missing ⚠️

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[datahub-connector-tests]

Connector Tests Results

All connector tests passed for commit f8037d1

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[alwaysmeticulous]

✅ Meticulous spotted 0 visual differences across 1432 screens tested: view results.

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_{Expected differences? Click here. Last updated for commit f8037d1 fix(ingest/google-drive): make document URNs credential-independent (Not.... This comment will update as new commits are pushed.}

[codecov]

Bundle Report

Bundle size has no change ✅

[github-actions]

i18n locale parity

Status: ⚠️ drift detected (warn-only) — 6 issue(s) across 3 locale(s)

Locale	Missing	Stale	Placeholder
de	2	0	0
es	2	0	0
pt-BR	2	0	0

de

❌ governance.domain.json — 5 missing key(s):
      - navigator.emptyFiltered
      - navigator.overview
      - navigator.section.allDomains
      - navigator.ownerFilter.label
      - navigator.ownerFilter.placeholder
❌ governance.structured-properties.json — 4 missing key(s):
      - allowedPlatforms.anyPlaceholder
      - allowedPlatforms.anyTooltip
      - allowedPlatforms.title
      - allowedPlatforms.tooltip

es

❌ governance.domain.json — 5 missing key(s):
      - navigator.emptyFiltered
      - navigator.overview
      - navigator.section.allDomains
      - navigator.ownerFilter.label
      - navigator.ownerFilter.placeholder
❌ governance.structured-properties.json — 4 missing key(s):
      - allowedPlatforms.anyPlaceholder
      - allowedPlatforms.anyTooltip
      - allowedPlatforms.title
      - allowedPlatforms.tooltip

pt-BR

❌ governance.domain.json — 5 missing key(s):
      - navigator.emptyFiltered
      - navigator.overview
      - navigator.section.allDomains
      - navigator.ownerFilter.label
      - navigator.ownerFilter.placeholder
❌ governance.structured-properties.json — 4 missing key(s):
      - allowedPlatforms.anyPlaceholder
      - allowedPlatforms.anyTooltip
      - allowedPlatforms.title
      - allowedPlatforms.tooltip