feat(wsgi): Migrate to span first

[sentrivana]

Description

Make the WSGI integration span first ready.

Also, set an additional attribute (user.ip_address) in ASGI.

Recommended to review with Ignore whitespace on.

Issues

• Closes Migrate wsgi to span first #6072
• Closes https://linear.app/getsentry/issue/PY-2374/migrate-wsgi-to-span-first

Reminders

• Please add tests to validate your changes, and lint your code using tox -e linters.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[github-actions]

Semver Impact of This PR

🟡 Minor (new features)

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[github-actions]

Codecov Results 📊

✅ 13 passed | Total: 13 | Pass Rate: 100% | Execution Time: 6.83s

All tests are passing successfully.

❌ Patch coverage is 7.81%. Project has 15327 uncovered lines.

Files with missing lines (3)

File	Patch %	Lines
scope.py	65.78%	⚠️ 297 Missing and 74 partials
wsgi.py	17.84%	⚠️ 152 Missing
_asgi_common.py	13.70%	⚠️ 63 Missing

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Generated by Codecov Action

[github-actions]

Codecov Results 📊

✅ 49 passed | ⏭️ 3 skipped | Total: 52 | Pass Rate: 94.23% | Execution Time: 12.36s

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	—
Failed Tests	—
Skipped Tests	—

✨ No test changes detected

All tests are passing successfully.

❌ Patch coverage is 7.81%. Project has 15640 uncovered lines.
❌ Project coverage is 26.7%. Comparing base (base) to head (head).

Files with missing lines (5)

File	Patch %	Lines
scope.py	61.75%	⚠️ 332 Missing and 73 partials
asgi.py	15.38%	⚠️ 176 Missing
wsgi.py	20.65%	⚠️ 123 Missing
_wsgi_common.py	23.75%	⚠️ 122 Missing
_asgi_common.py	13.70%	⚠️ 63 Missing

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
- Coverage    26.75%    26.70%    -0.05%
==========================================
  Files          191       191         —
  Lines        21281     21336       +55
  Branches      7006      7036       +30
==========================================
+ Hits          5692      5696        +4
- Misses       15589     15640       +51
- Partials       490       490         —

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Generated by Codecov Action

[sentrivana]

This is essentially a port of the event processor

[sentrivana]

This change was necessary as we're now always starting spans, regardless of type (segment or child), on the current scope instead of the isolation scope, so we also need to use the propagation context from there.

[linear-code]

PY-2374 Migrate wsgi to span first

[cursor]

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

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