| 37 | } |
| 38 | |
| 39 | fn builder_loop(core_id: usize, rx: mpsc::Receiver<BuildRequest>, tx: mpsc::Sender<BuildComplete>) { |
| 40 | while let Ok(req) = rx.recv() { |
| 41 | debug!( |
| 42 | core_id, |
| 43 | key = %req.key, |
| 44 | segment_id = req.segment_id, |
| 45 | vectors = req.vectors.len(), |
| 46 | dim = req.dim, |
| 47 | "building HNSW index" |
| 48 | ); |
| 49 | |
| 50 | let start = std::time::Instant::now(); |
| 51 | let mut index = HnswIndex::with_seed( |
| 52 | req.dim, |
| 53 | req.params, |
| 54 | (core_id as u64 + 1) * 1000 + req.segment_id as u64, |
| 55 | ); |
| 56 | |
| 57 | for vector in req.vectors { |
| 58 | index |
| 59 | .insert(vector) |
| 60 | .unwrap_or_else(|e| tracing::error!(error = %e, "HNSW insert failed")); |
| 61 | } |
| 62 | |
| 63 | let elapsed = start.elapsed(); |
| 64 | info!( |
| 65 | core_id, |
| 66 | key = %req.key, |
| 67 | segment_id = req.segment_id, |
| 68 | vectors = index.len(), |
| 69 | elapsed_ms = elapsed.as_millis() as u64, |
| 70 | "HNSW index built" |
| 71 | ); |
| 72 | |
| 73 | if tx |
| 74 | .send(BuildComplete { |
| 75 | key: req.key, |
| 76 | segment_id: req.segment_id, |
| 77 | index, |
| 78 | }) |
| 79 | .is_err() |
| 80 | { |
| 81 | warn!(core_id, "builder: core channel closed, stopping"); |
| 82 | break; |
| 83 | } |
| 84 | } |
| 85 | } |