vespera

# Vespera Usage Guide Vespera = FastAPI DX for Rust. Zero-config OpenAPI 3.1 generation via compile-time macro scanning. ## Quick Start ```rust // 1. Main entry - vespera! macro handles everything let app = vespera!( openapi = "openapi.json", // writes file at compile time title = "My API", version = "1.0.0", docs_url = "/docs", // Swagger UI redoc_url = "/redoc" // ReDoc alternative ); // 2. Route handlers - MUST be pub async fn #[vespera::route(get, path = "/{id}", tags = ["users"])] pub async fn get_user(Path(id): Path<u32>) -> Json<User> { ... } // 3. Custom types - derive Schema for OpenAPI inclusion #[derive(Serialize, Deserialize, vespera::Schema)] pub struct User { id: u32, name: String } ``` --- ## Type Mapping Reference | Rust Type | OpenAPI Schema | Notes | |-----------|----------------|-------| | `String`, `&str` | `string` | | | `i8`-`i128`, `u8`-`u128` | `integer` | | | `f32`, `f64` | `number` | | | `bool` | `boolean` | | | `Vec<T>` | `array` + items | | | `BTreeSet<T>`, `HashSet<T>` | `array` + items + `uniqueItems: true` | Set types | | `Option<T>` | T (nullable context) | Parent marks as optional | | `HashMap<K,V>` | `object` + additionalProperties | | | `Uuid` | `string` + `format: uuid` | | | `Decimal` | `string` + `format: decimal` | | | `NaiveDate` | `string` + `format: date` | | | `NaiveTime` | `string` + `format: time` | | | `DateTime`, `DateTimeWithTimeZone` | `string` + `format: date-time` | | | `FieldData<Nam...