Use consistent log file names, introduced initLogger (#3403)

### What problem does this PR solve?

Use consistent log file names, introduced initLogger

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

graphrag/index.py

@@ -13,6 +13,7 @@
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
 #
+import logging
 import os
 from concurrent.futures import ThreadPoolExecutor
 import json
@@ -28,7 +29,6 @@ from graphrag.graph_extractor import GraphExtractor, DEFAULT_ENTITY_TYPES
 from graphrag.mind_map_extractor import MindMapExtractor
 from rag.nlp import rag_tokenizer
 from rag.utils import num_tokens_from_string
-from api.utils.log_utils import logger
 
 
 def graph_merge(g1, g2):
@@ -95,7 +95,7 @@ def build_knowledge_graph_chunks(tenant_id: str, chunks: List[str], callback, en
     chunks = []
     for n, attr in graph.nodes(data=True):
         if attr.get("rank", 0) == 0:
-            logger.info(f"Ignore entity: {n}")
+            logging.debug(f"Ignore entity: {n}")
             continue
         chunk = {
             "name_kwd": n,
@@ -137,7 +137,7 @@ def build_knowledge_graph_chunks(tenant_id: str, chunks: List[str], callback, en
     mg = mindmap(_chunks).output
     if not len(mg.keys()): return chunks
 
-    logger.info(json.dumps(mg, ensure_ascii=False, indent=2))
+    logging.debug(json.dumps(mg, ensure_ascii=False, indent=2))
     chunks.append(
         {
             "content_with_weight": json.dumps(mg, ensure_ascii=False, indent=2),