Struct ReplayProvider 

pub struct ReplayProvider { /* private fields */ }

Zero-network BaseChatModel that replays from a recording file.

The queue is shared via Arc<Mutex<VecDeque>>; bind_tools returns a new instance carrying a tool set and sharing the same queue with the original (FIFO order stays consistent across branches).

Implementations

impl ReplayProvider

pub fn from_file(path: impl AsRef<Path>) -> Result<Self, TestkitError>

Reads a JSONL recording file (missing file / bad line → Err).

pub fn from_exchanges(exchanges: Vec<RecordedExchange>) -> Self

In-memory construction (hand-written recordings = the equivalent of a MockProvider).

pub fn single(response: LLMResult) -> Self

A single fixed response: every request returns the same response (simplest mock).

pub fn with_strategy(self, strategy: ReplayStrategy) -> Self

Sets the replay strategy (default FIFO; ByToolName routes by tool name).

pub fn bind_tools(&self, tools: Vec<ToolDefinition>) -> Self

Binds tools: returns a new instance carrying that tool set (sharing the same replay queue).

Binding tools on the replay side only satisfies the agent’s “tools-bound loop” precondition — the recording already contains the request-side tools and response-side tool_calls, so the replay logic needs no change. Under ByToolName, tools also serves as the routing key.

pub fn len(&self) -> usize

Number of remaining recordings.

pub fn is_empty(&self) -> bool

Whether no recordings remain.

Trait Implementations

impl BaseChatModel for ReplayProvider

fn chat<'life0, 'async_trait>( &'life0 self, messages: Vec<Message>, _config: Option<RunnableConfig>, ) -> Pin<Box<dyn Future<Output = Result<LLMResult, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Chat with the model.

fn stream_chat<'life0, 'async_trait>( &'life0 self, messages: Vec<Message>, config: Option<RunnableConfig>, ) -> Pin<Box<dyn Future<Output = Result<Pin<Box<dyn Stream<Item = Result<StreamChunk, Self::Error>> + Send>>, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Stream chat with the model.

fn bind_tools( &self, tools: Vec<ToolDefinition>, ) -> Option<Box<dyn BaseChatModel<Error = Self::Error> + Send + Sync>>

Bind tool definitions for function calling.

fn chat_with_system<'life0, 'async_trait>( &'life0 self, system: String, messages: Vec<Message>, ) -> Pin<Box<dyn Future<Output = Result<LLMResult, Self::Error>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: Sync + 'async_trait,

Chat with system prompt.

impl BaseLanguageModel<Vec<Message>, LLMResult> for ReplayProvider

fn model_name(&self) -> &str

Returns the model name.

fn get_num_tokens(&self, text: &str) -> usize

Calculates token count for text.

fn temperature(&self) -> Option<f32>

Returns the temperature parameter.

fn max_tokens(&self) -> Option<usize>

Returns the max tokens limit.

fn with_temperature(self, _temp: f32) -> Self

Sets the temperature parameter.

fn with_max_tokens(self, _max: usize) -> Self

Sets the max tokens limit.

impl Clone for ReplayProvider

fn clone(&self) -> ReplayProvider

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Runnable<Vec<Message>, LLMResult> for ReplayProvider

type Error = TestkitError

Error type.

fn invoke<'life0, 'async_trait>( &'life0 self, input: Vec<Message>, config: Option<RunnableConfig>, ) -> Pin<Box<dyn Future<Output = Result<LLMResult, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Transforms single input to output.

fn batch<'life0, 'async_trait>( &'life0 self, inputs: Vec<Input>, config: Option<RunnableConfig>, ) -> Pin<Box<dyn Future<Output = Result<Vec<Output>, Self::Error>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: 'async_trait,

Batch processing - transforms multiple inputs to outputs.

fn batch_as_completed<'life0, 'async_trait>( &'life0 self, inputs: Vec<Input>, config: Option<RunnableConfig>, ) -> Pin<Box<dyn Future<Output = Result<Vec<(usize, Output)>, Self::Error>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: 'async_trait,

Batch processing that returns results in completion order.

fn stream<'life0, 'async_trait>( &'life0 self, input: Input, config: Option<RunnableConfig>, ) -> Pin<Box<dyn Future<Output = Result<Pin<Box<dyn Stream<Item = Result<Output, Self::Error>> + Send>>, Self::Error>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: 'async_trait,

Streaming output - for real-time responses (LLM, etc).

fn transform<'life0, 'async_trait>( &'life0 self, input: Pin<Box<dyn Stream<Item = Result<Input, Self::Error>> + Send>>, config: Option<RunnableConfig>, ) -> Pin<Box<dyn Future<Output = Result<Pin<Box<dyn Stream<Item = Result<Output, Self::Error>> + Send + 'life0>>, Self::Error>> + Send + 'async_trait>>

where 'life0: 'async_trait, Self: 'async_trait,

Stream-to-stream transformation - the core of LCEL streaming.