Refac: Add KG rebuild logging with pipeline status

- Logs detailed progress, including warnings and failures, to the pipeline status.
- Adds counters to report the total number of successfully rebuilt entities and relationships upon completion.

lightrag/lightrag.py

@@ -1943,14 +1943,10 @@ class LightRAG:
                             text_chunks=self.text_chunks,
                             llm_response_cache=self.llm_response_cache,
                             global_config=asdict(self),
+                            pipeline_status=pipeline_status,
+                            pipeline_status_lock=pipeline_status_lock,
                         )
 
-                        async with pipeline_status_lock:
-                            log_message = f"Successfully rebuilt {len(entities_to_rebuild)} entities and {len(relationships_to_rebuild)} relations"
-                            logger.info(log_message)
-                            pipeline_status["latest_message"] = log_message
-                            pipeline_status["history_messages"].append(log_message)
-
                     except Exception as e:
                         logger.error(f"Failed to rebuild knowledge from chunks: {e}")
                         raise Exception(

lightrag/operate.py

@@ -250,6 +250,8 @@ async def _rebuild_knowledge_from_chunks(
     text_chunks: BaseKVStorage,
     llm_response_cache: BaseKVStorage,
     global_config: dict[str, str],
+    pipeline_status: dict | None = None,
+    pipeline_status_lock=None,
 ) -> None:
     """Rebuild entity and relationship descriptions from cached extraction results
 
@@ -262,6 +264,8 @@ async def _rebuild_knowledge_from_chunks(
     """
     if not entities_to_rebuild and not relationships_to_rebuild:
         return
+    rebuilt_entities_count = 0
+    rebuilt_relationships_count = 0
 
     # Get all referenced chunk IDs
     all_referenced_chunk_ids = set()
@@ -270,9 +274,12 @@ async def _rebuild_knowledge_from_chunks(
     for chunk_ids in relationships_to_rebuild.values():
         all_referenced_chunk_ids.update(chunk_ids)
 
-    logger.debug(
-        f"Rebuilding knowledge from {len(all_referenced_chunk_ids)} cached chunk extractions"
-    )
+    status_message = f"Rebuilding knowledge from {len(all_referenced_chunk_ids)} cached chunk extractions"
+    logger.info(status_message)
+    if pipeline_status is not None and pipeline_status_lock is not None:
+        async with pipeline_status_lock:
+            pipeline_status["latest_message"] = status_message
+            pipeline_status["history_messages"].append(status_message)
 
     # Get cached extraction results for these chunks
     cached_results = await _get_cached_extraction_results(
@@ -280,7 +287,12 @@ async def _rebuild_knowledge_from_chunks(
     )
 
     if not cached_results:
-        logger.warning("No cached extraction results found, cannot rebuild")
+        status_message = "No cached extraction results found, cannot rebuild"
+        logger.warning(status_message)
+        if pipeline_status is not None and pipeline_status_lock is not None:
+            async with pipeline_status_lock:
+                pipeline_status["latest_message"] = status_message
+                pipeline_status["history_messages"].append(status_message)
         return
 
     # Process cached results to get entities and relationships for each chunk
@@ -297,9 +309,14 @@ async def _rebuild_knowledge_from_chunks(
             chunk_entities[chunk_id] = entities
             chunk_relationships[chunk_id] = relationships
         except Exception as e:
-            logger.error(
+            status_message = (
                 f"Failed to parse cached extraction result for chunk {chunk_id}: {e}"
             )
+            logger.info(status_message)  # Per requirement, change to info
+            if pipeline_status is not None and pipeline_status_lock is not None:
+                async with pipeline_status_lock:
+                    pipeline_status["latest_message"] = status_message
+                    pipeline_status["history_messages"].append(status_message)
             continue
 
     # Rebuild entities
@@ -314,11 +331,22 @@ async def _rebuild_knowledge_from_chunks(
                 llm_response_cache=llm_response_cache,
                 global_config=global_config,
             )
-            logger.debug(
-                f"Rebuilt entity {entity_name} from {len(chunk_ids)} cached extractions"
+            rebuilt_entities_count += 1
+            status_message = (
+                f"Rebuilt entity: {entity_name} from {len(chunk_ids)} chunks"
             )
+            logger.info(status_message)
+            if pipeline_status is not None and pipeline_status_lock is not None:
+                async with pipeline_status_lock:
+                    pipeline_status["latest_message"] = status_message
+                    pipeline_status["history_messages"].append(status_message)
         except Exception as e:
-            logger.error(f"Failed to rebuild entity {entity_name}: {e}")
+            status_message = f"Failed to rebuild entity {entity_name}: {e}"
+            logger.info(status_message)  # Per requirement, change to info
+            if pipeline_status is not None and pipeline_status_lock is not None:
+                async with pipeline_status_lock:
+                    pipeline_status["latest_message"] = status_message
+                    pipeline_status["history_messages"].append(status_message)
 
     # Rebuild relationships
     for (src, tgt), chunk_ids in relationships_to_rebuild.items():
@@ -333,13 +361,29 @@ async def _rebuild_knowledge_from_chunks(
                 llm_response_cache=llm_response_cache,
                 global_config=global_config,
             )
-            logger.debug(
-                f"Rebuilt relationship {src}-{tgt} from {len(chunk_ids)} cached extractions"
+            rebuilt_relationships_count += 1
+            status_message = (
+                f"Rebuilt relationship: {src}->{tgt} from {len(chunk_ids)} chunks"
             )
+            logger.info(status_message)
+            if pipeline_status is not None and pipeline_status_lock is not None:
+                async with pipeline_status_lock:
+                    pipeline_status["latest_message"] = status_message
+                    pipeline_status["history_messages"].append(status_message)
         except Exception as e:
-            logger.error(f"Failed to rebuild relationship {src}-{tgt}: {e}")
+            status_message = f"Failed to rebuild relationship {src}->{tgt}: {e}"
+            logger.info(status_message)
+            if pipeline_status is not None and pipeline_status_lock is not None:
+                async with pipeline_status_lock:
+                    pipeline_status["latest_message"] = status_message
+                    pipeline_status["history_messages"].append(status_message)
 
-    logger.debug("Completed rebuilding knowledge from cached extractions")
+    status_message = f"KG rebuild completed: {rebuilt_entities_count} entities and {rebuilt_relationships_count} relationships."
+    logger.info(status_message)
+    if pipeline_status is not None and pipeline_status_lock is not None:
+        async with pipeline_status_lock:
+            pipeline_status["latest_message"] = status_message
+            pipeline_status["history_messages"].append(status_message)
 
 
 async def _get_cached_extraction_results(