Struct SessionStore 

pub struct SessionStore { /* private fields */ }

Maps response_id → accumulated message history for that session. Codex uses previous_response_id to continue a conversation; we maintain the full messages[] here so each Chat Completions call is self-contained.

Also maintains call_id → reasoning_content so that thinking-capable models (e.g. kimi-k2.6) can have their reasoning_content round-tripped back when Codex replays tool-call history in subsequent requests.

For assistant messages without tool calls (pure text), reasoning_content is indexed by a fingerprint of the prior messages + assistant content, so it can be recovered when Codex replays the full conversation in input without using previous_response_id.

Implementations

impl SessionStore

pub fn new() -> Self

pub fn store_reasoning(&self, call_id: String, reasoning: String)

Store reasoning_content keyed by the tool call_id so it can be injected back when the same call_id appears in a subsequent request.

pub fn get_reasoning(&self, call_id: &str) -> Option<String>

Look up stored reasoning_content for a call_id.

pub fn store_turn_reasoning( &self, _prior: &[ChatMessage], assistant: &ChatMessage, reasoning: String, )

Store reasoning_content for an assistant turn, keyed by a fingerprint of the assistant message content and tool calls.

pub fn get_turn_reasoning( &self, _prior: &[ChatMessage], assistant: &ChatMessage, ) -> Option<String>

Look up reasoning_content for an assistant turn by its text content.

pub fn get_history(&self, response_id: &str) -> Vec<ChatMessage>

Retrieve history for a prior response_id, or empty vec if not found.

pub fn new_id(&self) -> String

Allocate a fresh response_id without storing anything yet. Use with save_with_id() for the streaming path.

pub fn save_with_id(&self, id: String, messages: Vec<ChatMessage>)

Store under a pre-allocated response_id (streaming path).

pub fn save(&self, messages: Vec<ChatMessage>) -> String

Allocate an id and store atomically (non-streaming path).

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.