Struct SessionState 

pub struct SessionState {

    pub messages: Vec<Message>,
    pub compacted_prefix: Vec<Value>,
    pub file_view_cache: FileViewCache,
    pub appended_prompt_segments: Vec<PromptSegment>,
    pub pending_tool_calls: IndexMap<ToolCallId, PendingToolCall>,
    pub usage_so_far: Usage,
    pub summaries: Vec<SummarySlice>,
    pub lineage: Vec<SubagentRef>,
    pub fired_hook_ids: Vec<String>,
    pub pending_session_start_source: Option<HookSessionStartSource>,
    pub pending_warning_messages: Vec<HookWarning>,
    pub last_response_id: Option<String>,
    pub messages_seen_by_provider: usize,
}

Mutable state persisted for a session.

Fields

messages: Vec<Message>

compacted_prefix: Vec<Value>

file_view_cache: FileViewCache

appended_prompt_segments: Vec<PromptSegment>

pending_tool_calls: IndexMap<ToolCallId, PendingToolCall>

usage_so_far: Usage

summaries: Vec<SummarySlice>

lineage: Vec<SubagentRef>

fired_hook_ids: Vec<String>

pending_session_start_source: Option<HookSessionStartSource>

pending_warning_messages: Vec<HookWarning>

last_response_id: Option<String>

The OpenAI Responses API response ID from the last successful turn. Used for previous_response_id chaining to avoid re-sending full history.

messages_seen_by_provider: usize

Number of messages the model has already seen via previous_response_id. Messages at indices [0..messages_seen_by_provider) don’t need re-sending.

Trait Implementations

impl Clone for SessionState

fn clone(&self) -> SessionState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SessionState

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SessionState

fn default() -> SessionState

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for SessionState

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for SessionState

impl JsonSchema for SessionState

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl PartialEq for SessionState

fn eq(&self, other: &SessionState) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for SessionState

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SessionState