chore: add variables remapper to plan generator

[devsergiy]

Summary by CodeRabbit

• Bug Fixes
  • Improved operation normalization to handle variable remapping, ensuring more robust error detection and processing.

Checklist

• I have discussed my proposed changes in an issue and have received approval to proceed.
• I have followed the coding standards of the project.
• Tests or benchmarks have been added or updated.
• Documentation has been updated on https://github.com/wundergraph/cosmo-docs.
• I have read the Contributors Guide.

[coderabbitai]

Walkthrough

The normalizeOperation method in the Planner struct was updated to perform an additional normalization step using a VariablesMapper after the initial named operation normalization. The method now checks for errors after each normalization step and returns early if any are found. Import statements were reordered.

Changes

File(s)	Change Summary
router/core/plan_generator.go	Reordered imports; updated normalizeOperation to add a VariablesMapper normalization step and error checks.

Estimated code review effort

2 (~15 minutes)

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📜 Recent review details

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📥 Commits

Reviewing files that changed from the base of the PR and between 94b2971 and 4a83029.

📒 Files selected for processing (1)

• router/core/plan_generator.go (2 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (11)

• GitHub Check: build-router
• GitHub Check: build_push_image
• GitHub Check: build_push_image (nonroot)
• GitHub Check: image_scan (nonroot)
• GitHub Check: integration_test (./telemetry)
• GitHub Check: integration_test (./. ./fuzzquery ./lifecycle ./modules)
• GitHub Check: integration_test (./events)
• GitHub Check: image_scan
• GitHub Check: build_test
• GitHub Check: Analyze (go)
• GitHub Check: Analyze (javascript-typescript)

🔇 Additional comments (2)

router/core/plan_generator.go (2)

24-27: LGTM: Import reordering is clean.

The reordering of internal package imports maintains proper grouping and improves readability without affecting functionality.

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129-134: LGTM: Well-structured addition of variables remapping normalization.

The implementation correctly:

• Adds early return for errors after named operation normalization (defensive programming)
• Introduces the VariablesMapper normalization step in logical sequence
• Maintains consistent error handling patterns with the existing codebase

The two-stage normalization approach (named operation first, then variables) follows a sensible order of operations.

✨ Finishing Touches

• 📝 Generate Docstrings

🧪 Generate unit tests

• Create PR with unit tests
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• Commit unit tests in branch chore/add-variables-remapping-to-plan-generator

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[github-actions]

❌ Internal Query Planner CI checks failed

The Internal Query Planner CI checks failed in the celestial repository, and this is going to stop the merge of this PR.
If you are part of the WunderGraph organization, you can see the PR with more details.