Trait EventListener

Source

pub trait EventListener: Sync + Send {
    // Provided methods
    fn post_new_log_file(&self, _file_id: FileId) { ... }
    fn on_append_log_file(&self, _handle: FileBlockHandle) { ... }
    fn post_apply_memtables(&self, _file_id: FileId) { ... }
    fn first_file_not_ready_for_purge(
        &self,
        _queue: LogQueue,
    ) -> Option<FileSeq> { ... }
    fn post_purge(&self, _file_id: FileId) { ... }
}

Expand description

EventListener contains a set of callback functions that will be notified on specific events inside Raft Engine.

§Threading

Different callbacks are called under different threading contexts. on_append_log_file, for example, will be called under a global lock of one specific queue.