Struct CompactionMeta 

pub struct CompactionMeta {
    pub tail_start_id: Option<Uuid>,
    pub previous_compaction_id: Option<Uuid>,
    pub summary_text: Option<String>,
}

Metadata attached to compaction-related messages.

Compaction produces two messages:

1. A user message with is_compaction = true and compaction_meta.tail_start_id indicating where the retained tail begins.
2. An assistant message with is_summary = true containing the LLM-generated summary.

The previous_compaction_id and summary_text fields enable incremental summarization: prior compaction summaries are fed back to the compaction LLM so it can update the summary instead of regenerating from scratch.

Fields

tail_start_id: Option<Uuid>

The first message ID retained in the tail after this compaction.

previous_compaction_id: Option<Uuid>

The message ID of the previous compaction user message, enabling incremental updates.

summary_text: Option<String>

The summary text generated by the compaction LLM (stored for reuse).

Implementations

impl CompactionMeta

pub fn new(tail_start_id: Uuid) -> Self

Creates compaction metadata for a new compaction user message.

Sets tail_start_id to the given ID; previous_compaction_id and summary_text are left as None.

pub fn with_previous(self, previous_id: Uuid) -> Self

Sets the previous compaction ID for incremental summarization, consuming and returning self.

pub fn with_summary(self, summary: String) -> Self

Sets the summary text, consuming and returning self.

Trait Implementations

impl Clone for CompactionMeta

fn clone(&self) -> CompactionMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompactionMeta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CompactionMeta

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CompactionMeta

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

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 CompactionMeta