[8rulerstar]

What

Revision 0027 removes the egress rows under model_download, model_search and image_model_pull. A grant carries over to host:huggingface.co only when search and a download were both allowed and the host has no row yet. downgrade() is a no-op.

Also removes the Known gaps line from docs/architecture/egress.md and updates docs/architecture/data-model.md: the egress_destinations paragraph, the Revisions table (0027, plus the missing 0017 and 0018 rows) and the list of migration tests.

Why

The old rows were never migrated, so allowed downloads were asked again and the rows stayed in the table.

Decisions:

• Carrying across: only search plus a download, following 0012, since the host also covers search. On released installs this carries nothing: model_search never shipped, model_download only comes from 0012's rename of ollama_pull, and image_model_pull shipped in v2.0.0 to v2.0.2.
• An existing host:huggingface.co row wins, so a later answer, including a refusal, is never overwritten.
• downgrade() does nothing, since the app at 0018 reads only host names and a merged row cannot be split back.

Fixes #1957

How to test

cd surfsense_local/backend
uv run pytest -m integration -k migration
uv run pytest -m unit
uv run ruff check .
cd ../.. && python scripts/check_docs.py

test_migration_0027.py covers each decision and an upgrade from a v2.0.2 database (0011), which keeps model_download and image_model_pull without this revision. Integration 321 passed, unit 3071 passed.

High-level PR Summary

This PR implements database migration revision 0027 which removes outdated egress grant rows (model_download, model_search, image_model_pull) from the egress_destinations table. The migration carries over a grant to host:huggingface.co only when both search and download were previously allowed and no existing host row exists. The downgrade is intentionally a no-op since the application at revision 0018 only reads host names. Documentation is updated to reflect these changes and remove the known gap about unconverted grants.

⏱️ Estimated Review Time: 5-15 minutes

💡 Review Order Suggestion

Order	File Path
1	docs/architecture/data-model.md
2	docs/architecture/egress.md
3	surfsense_local/backend/alembic/versions/0027_retire_pre_host_egress_grants.py
4	surfsense_local/backend/tests/integration/test_migration_0027.py

Summary by CodeRabbit

• Updates
  • When both Hugging Face search and download permissions were enabled, access is carried over to the Hugging Face host unless a host-level choice already exists.
  • Separate permissions for Hugging Face search, downloads, and image pulls are removed. Other host permissions remain unchanged.
  • Existing host-level choices are preserved, and users without both search and download permissions are not granted host access.

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📝 Walkthrough

Walkthrough

Revision 0027 removes three legacy egress destination rows. It creates an enabled host:huggingface.co row only when search and a download grant are enabled and no host row exists. The downgrade does nothing. Integration tests and architecture documentation were updated.

Changes

Legacy egress grant migration

Layer / File(s)	Summary
Migration behavior surfsense_local/backend/alembic/versions/0027_retire_pre_host_egress_grants.py	Revision 0027 returns without changes if egress_destinations is absent. Otherwise, it inserts an enabled Hugging Face host row only when search and at least one download destination are enabled and no host row exists. It then deletes the three legacy rows. The downgrade is a no-op.
Migration tests and documentation surfsense_local/backend/tests/integration/test_migration_0027.py, docs/architecture/data-model.md, docs/architecture/egress.md	Integration tests cover grant combinations, existing host rows, unrelated hosts, downgrade behavior, and an upgrade from revision 0011. The data-model documentation adds revision entries and describes the migration. The egress documentation removes the known-gap note.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix · Severity of issue fixed: Medium

Merge Risk: ⚪ Minimal · up to 3e6c2

The migration documentation now names the correct revision. No identified issue remains that should delay merging.

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	#1957’s migration, consent rule, existing-host preservation, cleanup, and no-op downgrade are implemented in revision 0027; the integration tests cover these cases and the v2.0.2 upgrade. The requir…	Add test_migration_0027.py to the migration-test list in docs/architecture/data-model.md.
Docstring Coverage	⚠️ Warning	Docstring coverage is 75.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 12 functions across 2 files. (1 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Out of Scope Changes check	✅ Passed	The migration, its integration tests, and both documentation changes support #1957’s legacy egress-grant cleanup. No unrelated changes are evident.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: retiring the pre-host egress grants in migration revision 0027.

Full details: Linked Issues check

Explanation

#1957’s migration, consent rule, existing-host preservation, cleanup, and no-op downgrade are implemented in revision 0027; the integration tests cover these cases and the v2.0.2 upgrade. The required data-model description and revision table now identify 0027. However, the data-model migration-test list still omits test_migration_0027.py, although the current PR description says that list is updated.

Full details: Docstring Coverage

Explanation

Docstring coverage is 75.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 12 functions across 2 files. (1 skipped: 1 unsupported.)

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[MODSetter]

Reviewed this and the migration itself is right. Carrying a grant to host:huggingface.co only where search and a download were both allowed and the host had no answer of its own is exactly the conservative reading. Two blockers, and the first is not your mistake.

1. dev already has a revision 0019

You branched when 0018 was the head, which it was. Two other PRs landed later the same day and took the next two numbers:

• 0019_selection_settings.py landed 17:19 UTC
• 0020_plugin_runs.py landed 17:48 UTC
• this PR was opened 01:31 UTC, sixteen hours earlier

So revision = "0019" / down_revision = "0018" now collides with a revision that already exists, and the current head is 0020. Because your file is named 0019_retire_pre_host_egress_grants.py and the existing one is 0019_selection_settings.py, git does not report a conflict on them at all. Nothing fails until Alembic reads the directory:

UserWarning: Revision 0019 is present more than once

$ alembic heads
0019
0020 (head)

Two heads, so alembic upgrade head stops being meaningful, and the migration suite goes to 1 failed / 2 errors:

alembic.util.exc.CommandError: Multiple head revisions are present for given argument 'head';
please specify a specific target revision, '<branchname>@head' to narrow to a specific head,
or 'heads' for all heads

What to change

• rename alembic/versions/0019_retire_pre_host_egress_grants.py to 0022_retire_pre_host_egress_grants.py
• revision: str = "0022", down_revision: str | Sequence[str] | None = "0021"
• the Revision ID: line in the module docstring
• rename tests/integration/test_migration_0019.py to test_migration_0022.py, and update command.upgrade(config, "0019") and the docstring inside it
• the prose that names the number: data-model.md's revision table row, its "Revision 0019 removes rows under the earlier names ..." sentence, and the test_migration_0019.py mention in the testing bullet

Ordering

0021 is going to #2068, which has no other conflict and lands first. That is why you are on 0022 with down_revision = "0021". Please rebase after #2068 is in.

2. data-model.md conflicts with dev

#2084 landed changes to docs/architecture/data-model.md a few hours ago, so your edit to it no longer applies. Worth resolving by hand rather than taking either side whole: your sentence replaces the "no longer read" wording with what the revision now does, and #2084 added its own rows to the same document.

uv run pytest tests/integration/test_migrations.py is the check that catches the first problem, and python scripts/check_docs.py the second. Both pass on dev right now.

[8rulerstar]

Thanks for tracing the collision. I've renumbered locally to 0022 with down_revision = "0021" and merged the data-model.md change by hand, keeping #2084's rows. I'll rebase and push once #2068 is in, after running test_migrations.py and check_docs.py.

[8rulerstar]

I rebased onto current dev and renumbered the migration to 0027 (down_revision 0026), the next free slot, renaming the test to test_migration_0027.py to match. In docs/architecture/data-model.md I kept all the upstream rows (0017 to 0026) and added ours as the 0027 row; the egress.md Known gaps line it fixes is removed. Checks run locally: the 0027 migration test, test_migrations.py and test_migration_0022.py (18 passed), pytest -m unit (3895 passed), ruff check, alembic heads (single head 0027) and scripts/check_docs.py (0 problems). #2068 also targets 0027, so if it lands first I'll renumber this one to 0028.

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Actionable comments posted: 1

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Inline comments:
Review comments at @docs/architecture/data-model.md:
- Line 160: Update the migration revision cited in the destination description
from 0022 to 0027 so it identifies the revision that removes the legacy egress
rows.

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[MODSetter]

Merged into dev, thanks, and #1957 is closed. The migration only removes the three retired grant names, never touches a host row the person set, and leaves a no-op downgrade that is right for rows nothing reads. One leftover from the renumbering, for a follow-up PR: data-model.md:386 still names test_migration_0022.py, which is the embedding-index test, where it should name test_migration_0027.py.