Skip to main content

Summarizer

polyc_agent

Trait Summarizer 

Source 
pub trait Summarizer: Send + Sync {
    // Required method
    fn summarize<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 self,
        prior_summary: &'life1 str,
        transcript: &'life2 [LlmMessage],
    ) -> Pin<Box<dyn Future<Output = String> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait;
}
Expand description

Produces a textual summary of a transcript chunk that’s about to be dropped from the prompt window. Implementations can be deterministic (the StubSummarizer) or LLM-backed (a follow-up).

Used by the control plane’s anchored iterative summarization pass: when the replayed history exceeds crate::SUMMARY_TRIGGER, the summarizer compresses the oldest segment and the result is persisted as a summary event in the conversation’s event log (durable, replayable). Subsequent connects find the latest summary event and skip events at-or- before its covered position, so the prompt is bounded indefinitely. The “anchored” part means new summaries merge into the persistent state — the next summarizer call sees the prior summary as context, keeping detail across compactions rather than re-summarizing from scratch (per Factory’s evaluation across 36k engineering session messages).

Required Methods§

Source

fn summarize<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, prior_summary: &'life1 str, transcript: &'life2 [LlmMessage], ) -> Pin<Box<dyn Future<Output = String> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Summarize transcript (the about-to-be-dropped chunk), in the context of prior_summary (the persistent state from earlier compactions, empty on first compaction). Returns the new summary text that replaces prior_summary going forward.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§