feat(protographic): multiple keys and compound keys for entity rpc

[endigma]

Summary by CodeRabbit

• New Features

  • Added support for multiple and compound @key directives on entity types, enabling generation of multiple distinct lookup RPCs and messages for each key combination.

• Bug Fixes

  • Corrected handling of entity key mappings to ensure all @key directives are processed and reflected in generated mappings and proto files.

• Tests

  • Introduced new test cases to verify correct mapping and proto generation for entities with multiple and compound @key directives. Updated existing tests to cover these scenarios.

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

This change set refactors the handling of GraphQL entity @key directives in both the mapping and proto generation logic to support multiple and compound keys per entity. It removes single-key-specific naming helpers, updates visitors to process all @key directives, and expands the test suites with cases for multiple and compound keys.

Changes

Cohort / File(s)	Change Summary
Naming Convention Refactor protographic/src/naming-conventions.ts	Removed single-key request/response naming functions; updated method name generator to handle multiple key fields separated by spaces or commas, converting them to camel case and joining with "And".
Mapping Visitor Multi-Key Support protographic/src/sdl-to-mapping-visitor.ts	Refactored to extract all @key directives per type, treating each as a distinct raw key string; replaced single-key helper methods with multi-key versions; unified naming logic for RPCs and messages; removed unused imports.
Proto Visitor Multi-Key & Compound Key Support protographic/src/sdl-to-proto-visitor.ts	Refactored to extract all @key directives and generate separate RPCs and messages for each; updated request message creation to handle multiple key fields split from raw key strings; adjusted field number reconciliation and lock manager calls; removed unused imports; added new helper methods.
Mapping Tests: Multi/Compound Key Cases protographic/tests/sdl-to-mapping/03-federation.test.ts	Added tests verifying multiple and compound @key directives produce multiple distinct entity mappings; included tests for malformed keys and mixed single/compound keys; updated snapshots accordingly.
Proto Tests: Multi/Compound Key Cases protographic/tests/sdl-to-proto/04-federation.test.ts	Added tests verifying proto generation for entities with multiple and compound @key directives; confirmed generation of multiple lookup RPCs and messages per key variant; updated snapshots to reflect renamed lookup RPCs/messages for compound keys.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~40 minutes

• Complexity: High, due to core logic refactoring across multiple modules, new helper methods, changes to exported method signatures, and expanded test coverage for nuanced multi-key scenarios. Review requires careful validation of both logic and test outputs.

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Reviewing files that changed from the base of the PR and between 2bd165c and 2086794.

📒 Files selected for processing (4)

• protographic/src/naming-conventions.ts (1 hunks)
• protographic/src/sdl-to-proto-visitor.ts (5 hunks)
• protographic/tests/sdl-to-mapping/03-federation.test.ts (2 hunks)
• protographic/tests/sdl-to-proto/04-federation.test.ts (2 hunks)

🚧 Files skipped from review as they are similar to previous changes (4)

• protographic/src/naming-conventions.ts
• protographic/tests/sdl-to-proto/04-federation.test.ts
• protographic/tests/sdl-to-mapping/03-federation.test.ts
• protographic/src/sdl-to-proto-visitor.ts

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• Commit unit tests in branch jesse/eng-7737-protographic-allow-use-of-multiple-and-compound-keys

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[Noroth]

looking good so far

[coderabbitai]

Actionable comments posted: 0

🧹 Nitpick comments (1)

protographic/src/naming-conventions.ts (1)

53-57: LGTM! The compound key handling logic is well-implemented.

The updated function correctly handles both single and compound keys by splitting the keyString and joining with "And". This addresses the requirement for multiple and compound keys while maintaining backward compatibility with single keys.

However, consider adding validation for edge cases:

 export function createEntityLookupMethodName(typeName: string, keyString: string = 'id'): string {
+  if (!keyString.trim()) {
+    throw new Error('keyString cannot be empty');
+  }
   const fields = keyString.trim().split(' ');
   const keyPart = fields.map((field) => upperFirst(camelCase(field))).join('And');
   return `Lookup${typeName}By${keyPart}`;
 }

📜 Review details

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📥 Commits

Reviewing files that changed from the base of the PR and between 1eeaaae and e585738.

📒 Files selected for processing (2)

• protographic/src/naming-conventions.ts (1 hunks)
• protographic/tests/sdl-to-mapping/03-federation.test.ts (2 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• protographic/tests/sdl-to-mapping/03-federation.test.ts

⏰ 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). (2)

• GitHub Check: Analyze (javascript-typescript)
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[coderabbitai]

Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between e585738 and 3c30dea.

📒 Files selected for processing (1)

• protographic/src/naming-conventions.ts (1 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). (2)

• GitHub Check: Analyze (javascript-typescript)
• GitHub Check: Analyze (go)

reviewing changes

[Noroth]

LGTM