Struct BackendRouter 

pub struct BackendRouter { /* private fields */ }

Routes tool names to backends. Built once at startup from config.

Implementations

impl BackendRouter

pub fn new( configs: &[BackendConfig], fallback_url: Option<&str>, fallback_auth: Option<HeaderValue>, ) -> Result<Self, String>

Build from config. Resolves static credentials at construction time so the hot path does no I/O. fallback_auth is the credential for fallback_url (the tool_upstream_bearer_* setting); it rides on the implicit default backend so every call to that upstream carries it.

pub fn resolve(&self, tool: &str) -> Option<&ResolvedBackend>

Resolve a tool name to its backend. Returns None when no backend is configured for this tool and no default exists.

pub fn len(&self) -> usize

Number of configured backends.

pub fn is_empty(&self) -> bool

True when no backends are configured.

pub fn iter(&self) -> impl Iterator<Item = &ResolvedBackend>

Iterator over all configured backends.

pub fn get(&self, name: &str) -> Option<&ResolvedBackend>

The backend with this name, if configured.

pub fn with_fallback_transport(self, transport: BackendTransport) -> Self

Set the wire protocol of the implicit backend built from tool_upstream_url (tool_upstream_transport). Explicit [[backends]] entries keep their own setting.