Struct CompactionOutput 

#[non_exhaustive]
pub struct CompactionOutput {
    pub messages: Vec<Message>,
    pub pinned: Vec<bool>,
}

Result of a successful CompactionStrategy::compact call.

messages and pinned are parallel: pinned[i] describes the pin state of messages[i] in the post-compaction history. The strategy is responsible for forwarding the pin state of every message it preserves so the crate::History can keep its internal mask consistent across compactions.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

messages: Vec<Message>

Post-compaction message vector, in chronological order. Includes every pinned message from the input plus whatever tail the strategy chose to keep.

pinned: Vec<bool>

Post-compaction pin mask, parallel to Self::messages. Every pinned input message must remain true here; new entries (e.g. summary placeholders) are typically false.

Implementations

impl CompactionOutput

pub fn new(messages: Vec<Message>, pinned: Vec<bool>) -> CompactionOutput

Bundle a freshly compacted history with its parallel pin mask. messages.len() and pinned.len() must match — the History asserts this in debug builds.

Trait Implementations

impl Clone for CompactionOutput

fn clone(&self) -> CompactionOutput

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompactionOutput

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

Formats the value using the given formatter.