Struct SessionStore 

pub struct SessionStore { /* private fields */ }

A thread-safe store of investigation sessions.

Cloning shares the same underlying state; clones are cheap. The store is bounded by a SessionConfig so it is safe to keep alive for the lifetime of a long-running MCP server without unbounded memory growth.

Implementations

impl SessionStore

pub fn new() -> Self

Create an empty store with SessionConfig::default bounds.

pub fn with_config(config: SessionConfig) -> Self

Create an empty store with explicit eviction bounds.

pub fn config(&self) -> &SessionConfig

The eviction bounds in effect for this store.

pub fn record( &self, session_id: &str, question: &str, answer: &str, ) -> (usize, usize)

Record a completed turn for session_id, creating the session if needed. Returns the new turn index (0-based) and the total turn count.

Eviction bounds from the SessionConfig are enforced here: expired sessions are pruned, this session’s oldest turns are dropped past max_turns_per_session, and least-recently-active sessions are evicted past max_sessions.

pub fn history(&self, session_id: &str) -> Vec<InvestigationTurn>

Return a snapshot of a session’s turns, or an empty vec if unknown.

pub fn recent_history( &self, session_id: &str, n: usize, ) -> Vec<InvestigationTurn>

Return up to the n most recent turns of a session in chronological order, or an empty vec if the session is unknown.

This is the bounded counterpart to history: callers that only fold a few recent turns into a prompt should prefer it, since it clones at most n turns rather than the whole (capped) history.

pub fn snapshot(&self, session_id: &str) -> Option<InvestigationState>

Return a full snapshot of a session, if it exists.

pub fn session_count(&self) -> usize

The number of active sessions.

pub fn contains(&self, session_id: &str) -> bool

Whether a session with the given id exists.

Trait Implementations

impl Clone for SessionStore

fn clone(&self) -> SessionStore

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for SessionStore

fn default() -> Self

Returns the “default value” for a type.