Struct StreamDelta 

pub struct StreamDelta {

    pub delta_id: StreamDeltaId,
    pub run_id: RunId,
    pub agent_id: AgentId,
    pub turn_id: Option<TurnId>,
    pub attempt_id: Option<AttemptId>,
    pub message_id: Option<MessageId>,
    pub tool_call_id: Option<ToolCallId>,
    pub realtime_session_id: Option<RealtimeSessionId>,
    pub channel: StreamChannel,
    pub direction: Option<StreamDirection>,
    pub cursor: StreamCursor,
    pub source: SourceRef,
    pub destination: Option<DestinationRef>,
    pub policy_refs: Vec<PolicyRef>,
    pub privacy: PrivacyClass,
    pub retention: RetentionClass,
    pub content_ref: Option<ContentRef>,
    pub marker_id: Option<MarkerId>,
    pub redacted_summary: String,
    pub runtime_package_fingerprint: String,
    /* private fields */
}

Carries the stream delta record payload for journal, event, or fixture surfaces. Creating or cloning it only preserves serialized SDK state; append, publish, replay, or export effects are documented on the runtime and port methods that store it.

Fields

delta_id: StreamDeltaId

Stable delta id used for typed lineage, lookup, or dedupe.

run_id: RunId

Run identifier used for lineage, filtering, replay, and dedupe.

agent_id: AgentId

Agent identifier used for lineage, filtering, and ownership checks.

turn_id: Option<TurnId>

Turn identifier for one loop turn within a run.

attempt_id: Option<AttemptId>

Attempt identifier for retry, repair, provider, or tool execution evidence.

message_id: Option<MessageId>

Message identifier for transcript, projection, or provider-response lineage.

tool_call_id: Option<ToolCallId>

Stable tool call id used for typed lineage, lookup, or dedupe.

realtime_session_id: Option<RealtimeSessionId>

Stable realtime session id used for typed lineage, lookup, or dedupe.

channel: StreamChannel

Channel used by this record or request.

direction: Option<StreamDirection>

Optional direction value. When absent, callers should use the documented default or skip that optional behavior.

cursor: StreamCursor

Cursor identifying a replay, export, or subscription position. Use it to resume without widening the original scope.

source: SourceRef

Source label or ref for this item; it is metadata and does not fetch content by itself.

destination: Option<DestinationRef>

Destination label or ref for this item; it is metadata and does not deliver content by itself.

policy_refs: Vec<PolicyRef>

Policy references that govern admission, projection, execution, or delivery.

privacy: PrivacyClass

Privacy class used for projection, telemetry, and raw-content access decisions.

retention: RetentionClass

Retention class used by hosts and sinks when storing or exporting this item.

content_ref: Option<ContentRef>

Content reference where payload bytes or structured tool output are stored.

marker_id: Option<MarkerId>

Stable marker id used for typed lineage, lookup, or dedupe.

redacted_summary: String

Redacted human-readable summary safe for events, telemetry, and logs.

runtime_package_fingerprint: String

Fingerprint of the runtime package snapshot in force when this value was produced. Use it for replay, dedupe, and package-lineage checks; the field is evidence and does not execute package behavior.

Implementations

impl StreamDelta

pub fn visible_text( delta_id: impl Into<String>, channel: StreamChannel, cursor: StreamCursor, text: impl Into<String>, source: SourceRef, ) -> Self

Builds the visible text value with the documented defaults. This is data-only and does not perform I/O, call host ports, append journals, publish events, or start processes.

pub fn marker( delta_id: impl Into<String>, channel: StreamChannel, cursor: StreamCursor, marker_id: impl Into<String>, source: SourceRef, ) -> Self

Marker. This is data-only and does not perform I/O, call host ports, append journals, publish events, or start processes.

pub fn with_run(self, run_id: RunId, agent_id: AgentId) -> Self

Returns this value with its run setting replaced. The method follows builder-style data construction and does not execute external work.

pub fn with_turn(self, turn_id: TurnId) -> Self

Returns this value with its turn setting replaced. The method follows builder-style data construction and does not execute external work.

pub fn with_attempt(self, attempt_id: AttemptId) -> Self

Returns this value with its attempt setting replaced. The method follows builder-style data construction and does not execute external work.

pub fn with_direction(self, direction: StreamDirection) -> Self

Returns this value with its direction setting replaced. The method follows builder-style data construction and does not execute external work.

pub fn with_destination(self, destination: DestinationRef) -> Self

Returns this value with its destination setting replaced. The method follows builder-style data construction and does not execute external work.

pub fn with_content_ref(self, content_ref: ContentRef) -> Self

Returns this value with its content ref setting replaced. The method follows builder-style data construction and does not execute external work.

pub fn matcher_text(&self) -> Option<&str>

Returns the matcher text currently held by this value. This is data-only and does not perform I/O, call host ports, append journals, publish events, or start processes.

pub fn serialized_raw_text_absent(&self) -> bool

Returns whether serialized raw text absent applies for this contract. This is data-only and does not perform I/O, call host ports, append journals, publish events, or start processes.

Trait Implementations

impl Clone for StreamDelta

fn clone(&self) -> StreamDelta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StreamDelta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StreamDelta

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for StreamDelta

fn eq(&self, other: &StreamDelta) -> 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 StreamDelta

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for StreamDelta

impl StructuralPartialEq for StreamDelta