GH#14040: tighten hexagonal.md 181→160 lines#14061
GH#14040: tighten hexagonal.md 181→160 lines#14061alex-solovyev wants to merge 1 commit intomainfrom
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…ompress code blocks, remove redundant path comments (GH#14040)
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Code Review
This pull request simplifies the hexagonal architecture documentation by updating the Mermaid diagram, removing file path comments, and shortening variable names in code examples. Feedback focuses on the architectural accuracy of the diagram, specifically the removal of the application core layer which may misrepresent dependency flows by showing adapters connecting directly to the domain. Additionally, suggestions were made to revert variable renames (from 'method' to 'paymentMethod' and 'i' to 'item') and restore multi-line formatting to maintain code clarity and readability.
| flowchart TB | ||
| subgraph DriverSide["DRIVER SIDE (Primary / Inbound / Left)"] | ||
| REST["REST API Adapter"] | ||
| CLI["CLI Adapter"] | ||
| DriverPorts["DRIVER PORTS\n(Use Case Interfaces)"] | ||
| REST --> DriverPorts | ||
| CLI --> DriverPorts | ||
| subgraph DriverSide["DRIVER SIDE (Primary / Inbound)"] | ||
| REST["REST API"] --> DriverPorts["DRIVER PORTS\n(Use Case Interfaces)"] | ||
| CLI["CLI"] --> DriverPorts | ||
| end | ||
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| subgraph Hexagon["THE HEXAGON"] | ||
| subgraph AppCore["APPLICATION CORE"] | ||
| subgraph Domain["DOMAIN\n(Business Logic)"] | ||
| end | ||
| end | ||
| Domain["DOMAIN\n(Business Logic)"] | ||
| end | ||
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| subgraph DrivenSide["DRIVEN SIDE (Secondary / Outbound / Right)"] | ||
| DrivenPorts["DRIVEN PORTS\n(Repository Interfaces)"] | ||
| Postgres["Postgres Adapter"] | ||
| RabbitMQ["RabbitMQ Adapter"] | ||
| DrivenPorts --> Postgres | ||
| DrivenPorts --> RabbitMQ | ||
| subgraph DrivenSide["DRIVEN SIDE (Secondary / Outbound)"] | ||
| DrivenPorts["DRIVEN PORTS\n(Repository Interfaces)"] --> Postgres["Postgres"] | ||
| DrivenPorts --> RabbitMQ["RabbitMQ"] | ||
| end | ||
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| DriverPorts --> AppCore | ||
| AppCore --> DrivenPorts | ||
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| DriverPorts --> Domain | ||
| Domain --> DrivenPorts |
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The simplification of the Mermaid diagram, specifically removing the AppCore subgraph and connecting DriverPorts directly to Domain, might oversimplify the architecture and misrepresent the dependency flow. In Hexagonal Architecture, driver adapters interact with application services (use cases), which then orchestrate the domain logic. The AppCore layer represented this crucial application service layer. The direct connection DriverPorts --> Domain implies that adapters are calling the domain logic directly, which is generally discouraged. While Rule 1 suggests conciseness in core files, Rule 4 and Rule 5 emphasize restoring key concepts and details for clarity and technical accuracy.
References
- Maintain a tiered documentation structure with a concise core file and detailed reference files.
- Restore detailed explanations for key concepts for clarity.
- When documenting restrictions, provide the technical reason behind them.
| // application/ports/driven/payment_gateway_port.ts | ||
| export interface IPaymentGatewayPort { | ||
| charge(amount: Money, paymentMethod: PaymentMethod): Promise<PaymentResult>; | ||
| charge(amount: Money, method: PaymentMethod): Promise<PaymentResult>; |
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The parameter paymentMethod was more descriptive than method. While method is shorter, paymentMethod provides better clarity about the purpose of the parameter, improving code readability. It's generally better to favor descriptive names over shorter ones.
| charge(amount: Money, method: PaymentMethod): Promise<PaymentResult>; | |
| charge(amount: Money, paymentMethod: PaymentMethod): Promise<PaymentResult>; |
| items: req.body.items.map((item: any) => ({ | ||
| productId: item.product_id, quantity: item.quantity, | ||
| })), | ||
| items: req.body.items.map((i: any) => ({ productId: i.product_id, quantity: i.quantity })), |
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Using i as a parameter name in the .map() callback is less descriptive than the original item. While shorter, item more clearly communicates what the variable represents. Additionally, formatting the mapped object across multiple lines improves readability. I'd recommend restoring the original, more descriptive variable name and multi-line formatting.
| items: req.body.items.map((i: any) => ({ productId: i.product_id, quantity: i.quantity })), | |
| items: req.body.items.map((item: any) => ({ | |
| productId: item.product_id, quantity: item.quantity, | |
| })), |
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| class StripePaymentGateway implements IPaymentGatewayPort: | ||
| charge(amount, paymentMethod) -> PaymentResult: | ||
| charge(amount, method) -> PaymentResult: |
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Similar to the TypeScript interface change, renaming paymentMethod to method reduces clarity. The name paymentMethod is more descriptive and improves the readability of the function signature. It's generally better to favor descriptive names over shorter ones.
| charge(amount, method) -> PaymentResult: | |
| charge(amount, paymentMethod) -> PaymentResult: |
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Summary
.agents/tools/architecture/clean-ddd-hexagonal-skill/hexagonal.mdfrom 181→160 lines (12% reduction)Hexagon > AppCore > Domain→Hexagon > Domain), inline node declarations with edges, remove redundant "Adapter" suffixes from labelsCloses #14040
Runtime Testing
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