Enum StreamEvent 

pub enum StreamEvent {
    InitStream {
        run_id: String,
        conversation_id: String,
        timestamp: i64,
    },
    Reasoning {
        content: String,
    },
    Message {
        content: String,
    },
    ToolCall {
        index: u32,
        id: Option<String>,
        name: Option<String>,
        arguments: Option<String>,
    },
    ToolResult {
        tool_call_id: String,
        result: String,
        is_error: bool,
        duration_ms: u64,
    },
    Done {
        finish_reason: Option<String>,
    },
    Error {
        message: String,
        node_id: Option<String>,
    },
    EndStream {
        status: String,
        total_duration_ms: u64,
    },
}

Unified StreamEvent for Graph orchestration

Includes both LLM streaming events and Graph-specific orchestration events. This is the canonical event type used throughout the Graph execution.

Variants

InitStream

Graph execution started

Fields

run_id: String

conversation_id: String

timestamp: i64

Reasoning

Internal reasoning from LLM (streamed token-by-token)

Fields

content: String

Message

Response message from LLM (streamed token-by-token)

Fields

content: String

ToolCall

LLM decided to call a tool (streamed incrementally)

Fields

index: u32

id: Option<String>

name: Option<String>

arguments: Option<String>

ToolResult

Tool execution completed

Fields

tool_call_id: String

result: String

is_error: bool

duration_ms: u64

Done

LLM streaming completed

Fields

finish_reason: Option<String>

Error

Fatal error occurred

Fields

message: String

node_id: Option<String>

EndStream

Graph execution completed

Fields

status: String

total_duration_ms: u64

Trait Implementations

impl Clone for StreamEvent

fn clone(&self) -> StreamEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamEvent

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StreamEvent

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<StreamEvent> for StreamEvent

Automatic conversion from LLM StreamEvent to Graph StreamEvent

fn from(event: StreamEvent) -> Self

Converts to this type from the input type.

impl Serialize for StreamEvent

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StreamEventExtractor for StreamEvent

Implementation of StreamEventExtractor for praxis-persist compatibility

fn is_reasoning(&self) -> bool

fn is_message(&self) -> bool

fn is_tool_call(&self) -> bool

fn reasoning_content(&self) -> Option<&str>

fn message_content(&self) -> Option<&str>

fn tool_call_info( &self, ) -> Option<(u32, Option<&str>, Option<&str>, Option<&str>)>