refactor: replaced ModelMatcher interface with ModelCatalog struct to avoid having to do to nil checks using reflect

[danpiths]

Summary

replaced ModelMatcher interface with ModelCatalog struct to avoid having to
do to nil checks using reflect

Changes

• Added NewTestCatalog function to create a minimal ModelCatalog for testing
  purposes
• Replaced the custom mockModelMatcher with the new NewTestCatalog function
  in governance tests
• Updated the governance store to use ModelCatalog directly instead of a
  ModelMatcher interface
• Renamed references from modelMatcher to modelCatalog throughout the
  codebase

Type of change

• Refactor
• Feature

Affected areas

• Core (Go)
• Plugins

How to test

# Run the governance tests
go test ./plugins/governance/...

# Run the modelcatalog tests
go test ./framework/modelcatalog/...

Breaking changes

• No

Related issues

N/A

Security considerations

No security implications as this is a testing utility.

Checklist

• I added/updated tests where appropriate
• I verified builds succeed (Go)

[danpiths]

• feat: add routing engine tracking to logs and telemetry #1593
• refactor: replaced ModelMatcher interface with ModelCatalog struct to avoid having to do to nil checks using reflect #1589 👈 (View in Graphite)
• feat: add retry logic to MCP client connection establishment and tool retrieval #1568 : 1 other dependent PR (#1569 )
• main

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[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Summary by CodeRabbit

• Refactor
  • Improved internal model catalog implementation by replacing an abstraction layer with a direct dependency to enhance code clarity and simplify model handling logic.
  • Updated test infrastructure to use new testing utilities for more robust model matching verification across governance tests.

Walkthrough

Replaces the governance plugin's ModelMatcher dependency with a ModelCatalog field, updates related code and tests to use ModelCatalog, and adds an exported NewTestCatalog helper to construct minimal ModelCatalog instances for testing. No background sync or production initialization behavior changed.

Changes

Cohort / File(s)	Summary
Model catalog test helper framework/modelcatalog/main.go	Adds exported NewTestCatalog(baseModelIndex map[string]string) *ModelCatalog to create minimal ModelCatalog instances for tests (does not start sync workers or external connections).
Governance core implementation plugins/governance/store.go	Removes ModelMatcher interface; LocalGovernanceStore now holds modelCatalog *modelcatalog.ModelCatalog. Updates NewLocalGovernanceStore signature and replaces matcher calls with modelCatalog.GetBaseModelName(...) for model-name normalization and key derivation.
Governance test infrastructure & tests plugins/governance/test_utils.go, plugins/governance/model_provider_governance_test.go	Removes mockModelMatcher type and constructor; adds newTestModelCatalog(t *testing.T) that returns *modelcatalog.ModelCatalog (uses NewTestCatalog). Tests updated to use the new test catalog factory.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• refactor: replaced ModelMatcher interface with ModelCatalog struct to avoid having to do to nil checks using reflect #1589 — Implements the same refactor: adds NewTestCatalog and replaces ModelMatcher usages with modelcatalog.ModelCatalog (directly related).

Suggested reviewers

• akshaydeo

Poem

🐰 I swapped a matcher for a tidy book,
A quiet catalog took its nook,
Tests now sip tea, no workers to hum,
Pages closed gently — the changes are done,
I thump my foot and nibble a plum.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically describes the main refactoring change: replacing ModelMatcher interface with ModelCatalog struct and the specific reason (avoiding nil checks with reflect).
Description check	✅ Passed	The description covers all essential required sections: Summary, Changes, Type of change, Affected areas, How to test, Breaking changes, and Checklist items are mostly complete.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/02-09-refactor_replaced_modelmatcher_interface_with_modelcatalog_struct_to_avoid_having_to_do_to_nil_checks_using_reflect

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@framework/modelcatalog/main.go`:
- Around line 638-648: NewTestCatalog returns a minimal ModelCatalog but doesn't
initialize the done channel, so calling Cleanup (which closes mc.done) can
panic; update NewTestCatalog to initialize the ModelCatalog.done channel (e.g.,
make(chan struct{})) when constructing the return value so Cleanup can safely
close it; refer to NewTestCatalog, ModelCatalog, and Cleanup to locate and fix
the initialization.

[Pratham-Mishra04]

Merge activity

• Feb 9, 4:40 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Feb 9, 5:11 PM UTC: Graphite couldn't merge this pull request because a downstack PR feat: add retry logic to MCP client connection establishment and tool retrieval #1568 failed to merge.
• Feb 9, 5:44 PM UTC: A user started a stack merge that includes this pull request via Graphite.
• Feb 9, 5:45 PM UTC: Graphite couldn't merge this pull request because a downstack PR feat: add retry logic to MCP client connection establishment and tool retrieval #1568 failed to merge.
• Feb 10, 9:14 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Feb 10, 9:14 AM UTC: Graphite couldn't merge this pull request because a downstack PR feat: add retry logic to MCP client connection establishment and tool retrieval #1568 failed to merge.
• Feb 10, 9:22 AM UTC: A user started a stack merge that includes this pull request via Graphite.
• Feb 10, 9:25 AM UTC: Graphite rebased this pull request as part of a merge.
• Feb 10, 9:26 AM UTC: @Pratham-Mishra04 merged this pull request with Graphite.