add basic rate limiting

📝 Walkthrough

## Walkthrough The changes introduce new middleware functionalities for rate limiting and request size limiting in an HTTP server context. A new `limiter.go` file contains functions to apply rate limits based on user authentication status and to restrict request body sizes. Enhancements to logging are made in `requestlog.go` to capture HTTP status codes. The `router.go` file is updated to integrate these new middleware functions, while `http.go` establishes dependency injection for the rate limiting functionality. A new `ratelimit.go` file defines the rate limiting logic and configurations. ## Changes | File Path | Change Summary | |------------------------------------------------|----------------------------------------------------------------------------------------------------------------| | app/transports/http/middleware/limiter/limiter.go | Added functions: `WithRateLimiter` for rate limiting based on authentication; `WithRequestSizeLimiter` for request size limiting. | | app/transports/http/middleware/reqlog/requestlog.go | Introduced `withStatus` struct to capture HTTP status codes; modified `WithLogger` to utilize this struct. | | app/transports/http/router.go | Added import statements for `limiter`; defined `MaxRequestSizeBytes`; updated `MountOpenAPI` function to include rate limiter middleware. | | internal/infrastructure/httpserver/http.go | Modified import statements to multi-line format; no changes to functionality. | | internal/infrastructure/httpserver/ratelimit/ratelimit.go | Introduced `Limiter` struct and `New` function for rate limiting; defined constants for request limits. | | internal/config/config.go | Added new fields `UnauthenticatedRPS` and `AuthenticatedRPS` to `Config` struct. | | internal/integration/fx.go | Updated `defaultConfig` structure to include `UnauthenticatedRPS` and `AuthenticatedRPS` fields. | ## Sequence Diagram(s) ```mermaid sequenceDiagram participant Client participant Router participant Limiter participant Handler Client->>Router: HTTP Request Router->>Limiter: Apply Rate Limiter Limiter->>Router: Rate Limiting Check Router->>Limiter: Apply Request Size Limiter Limiter->>Router: Size Limiting Check Router->>Handler: Forward Request Handler-->>Router: Response Router-->>Client: HTTP Response ``` > 🐇 "In the meadow where bunnies play, > New limits keep the chaos at bay. > With size and rate, we hop with glee, > A smoother path for you and me! > So let us dance and twirl about, > For better requests, we sing and shout!" 🐰✨

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Southclaws / storyden

add basic rate limiting #246