Struct TemplateCompactor 

pub struct TemplateCompactor { /* private fields */ }

Builds a textual rollup without calling a model. Concatenates a header, the previous summary, and rendered evicted messages into a TextSummary convertible to a system message.

Unbounded by default. Self::with_max_bytes removes oldest body bytes at UTF-8 boundaries, retaining the first header line and a truncation marker even when those exceed the cap.

use rig_memory::TemplateCompactor;

// Default header is "[Conversation summary so far]", unbounded.
let _compactor = TemplateCompactor::new();

// Custom header plus a 4 KiB cap for use with token-budgeted policies.
let _bounded = TemplateCompactor::with_header("Earlier context")
    .with_max_bytes(4 * 1024);

Implementations

impl TemplateCompactor

pub fn new() -> Self

Create a TemplateCompactor with the default header "[Conversation summary so far]" and no size cap.

pub fn with_header(header: impl Into<String>) -> Self

Create a TemplateCompactor with a custom header line and no size cap.

pub fn with_max_bytes(self, max_bytes: usize) -> Self

Cap the rolled-up summary at max_bytes bytes (UTF-8). When the assembled body exceeds the cap, the oldest portion after the header is dropped at a char boundary and replaced with a "[…truncated…]" marker.

max_bytes of 0 disables truncation (equivalent to the default unbounded behaviour). The header line plus the marker are always preserved even if they exceed the cap.

Trait Implementations

impl Clone for TemplateCompactor

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Compactor for TemplateCompactor

type Artifact = TextSummary

Summary convertible to a history message and clonable for the next compaction’s carry_over.

fn compact<'a>( &'a self, _conversation_id: &'a ConversationId, evicted: &'a [Message], carry_over: Option<&'a Self::Artifact>, ) -> WasmBoxedFuture<'a, Result<Self::Artifact, MemoryError>>

Produce a summary artifact for evicted, optionally combining it with the previous summary in carry_over.

impl Debug for TemplateCompactor

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

Formats the value using the given formatter.

impl Default for TemplateCompactor

fn default() -> Self

Returns the “default value” for a type.