Diagram Providers & Dependencies

Kroki-rs uses the Provider Pattern to decouple the API from rendering logic.

The Provider Pattern¶

All providers implement the DiagramProvider trait. This ensures a consistent interface for validation and generation.

#[async_trait]
impl DiagramProvider for MyProvider {
    fn validate(&self, source: &str) -> DiagramResult<()> { ... }
    async fn generate(&self, source: &str, format: &str) -> DiagramResult<Vec<u8>> { ... }
}

System Dependencies¶

Kroki-rs delegates rendering to specialized external tools. Here is the dependency map:

Adding a New Provider¶

1. Create src/diagrams/providers/new_tool.rs.

2. Use define_provider!(NewToolProvider).

3. Register in registry.rs and update capabilities.rs.

See Coding Standards for implementation details.