Enum PiStreamEvent 

pub enum PiStreamEvent {
    MessageUpdate {
        assistant_message_event: PiAssistantEvent,
    },
    ToolExecutionStart {
        tool_call_id: String,
        tool_name: String,
        args: Value,
    },
    ToolExecutionEnd {
        tool_call_id: String,
        tool_name: String,
        result: PiToolResult,
        is_error: bool,
    },
    TurnEnd {
        message: Option<PiTurnMessage>,
    },
    Other,
}

Events from pi’s --mode json NDJSON output.

Only the events Ralph needs are modeled. All other event types (session, agent_start, turn_start, message_start, message_end, tool_execution_update, etc.) are captured by the Other variant.

Variants

MessageUpdate

Streaming text/thinking deltas and errors from assistant.

Fields

assistant_message_event: PiAssistantEvent

ToolExecutionStart

Tool begins execution.

Fields

tool_call_id: String

tool_name: String

args: Value

ToolExecutionEnd

Tool completes execution.

Fields

tool_call_id: String

tool_name: String

result: PiToolResult

is_error: bool

TurnEnd

Turn completes — contains per-turn usage/cost.

Fields

message: Option<PiTurnMessage>

Other

All other events (session, agent_start, turn_start, message_start, message_end, tool_execution_update, etc.)

Trait Implementations

impl Clone for PiStreamEvent

fn clone(&self) -> PiStreamEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PiStreamEvent

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PiStreamEvent

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PiStreamEvent

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

where __S: Serializer,

Serialize this value into the given Serde serializer.