use crate::{ExecutionSpec, LlmQuery, QueryId, TokenUsage};
pub trait ExecutionObserver: Send + Sync {
fn on_started(&self, _spec: &ExecutionSpec) {}
fn on_paused(&self, _queries: &[LlmQuery]) {}
fn on_partial_feed(&self, _query_id: &QueryId, _remaining: usize) {}
fn on_response_fed(&self, _query_id: &QueryId, _response: &str, _usage: Option<&TokenUsage>) {}
fn on_resumed(&self) {}
fn on_completed(&self, _result: &serde_json::Value) {}
fn on_failed(&self, _error: &str) {}
fn on_cancelled(&self) {}
}