Struct DirectModelSampling 

pub struct DirectModelSampling { /* private fields */ }

A sampling provider backed by direct model invocation.

Used when running the agent without an MCP host. Wraps a caller-supplied callback that performs the actual model call. When no callback is provided (via DirectModelSampling::unavailable), all sampling calls return SamplingError::NotAvailable to trigger graceful degradation in callers.

Implementations

impl DirectModelSampling

pub fn new( invoke: impl Fn(SamplingRequest) -> BoxFuture<'static, Result<SamplingResponse, SamplingError>> + Send + Sync + 'static, ) -> Self

Create a new provider with the given model invocation callback.

The callback is wrapped in an Arc so the provider remains Clone-friendly and can be shared across tasks.

pub const fn unavailable() -> Self

Create a provider that always reports sampling as unavailable.

SamplingProvider::is_available will return false and all calls to SamplingProvider::sample will return SamplingError::NotAvailable.

Trait Implementations

impl SamplingProvider for DirectModelSampling

fn is_available(&self) -> bool

Returns true if sampling is available (provider configured).

fn sample( &self, request: SamplingRequest, ) -> BoxFuture<'_, Result<SamplingResponse, SamplingError>>

Request a completion from the LLM.