Set Log level by env (#3798)

### What problem does this PR solve?

Set Log level by env

### Type of change

- [x] Refactoring

api/db/services/llm_service.py

@@ -179,7 +179,7 @@ class TenantLLMService(CommonService):
                     .where(cls.model.tenant_id == tenant_id, cls.model.llm_factory == tenant_llm.llm_factory, cls.model.llm_name == llm_name)\
                     .execute()
             else:
-                llm_factory = llm_name.split("/")[0] if "/" in llm_name else llm_name
+                llm_factory = mdlnm.split("@")[1] if "@" in mdlnm else mdlnm
                 num = cls.model.create(tenant_id=tenant_id, llm_factory=llm_factory, llm_name=llm_name, used_tokens=used_tokens)
         except Exception:
             logging.exception("TenantLLMService.increase_usage got exception")

api/ragflow_server.py

@@ -19,15 +19,10 @@
 # beartype_all(conf=BeartypeConf(violation_type=UserWarning))    # <-- emit warnings from all code
 
 import logging
+import os
 from api.utils.log_utils import initRootLogger
-initRootLogger("ragflow_server")
-for module in ["pdfminer"]:
-    module_logger = logging.getLogger(module)
-    module_logger.setLevel(logging.WARNING)
-for module in ["peewee"]:
-    module_logger = logging.getLogger(module)
-    module_logger.handlers.clear()
-    module_logger.propagate = True
+LOG_LEVELS = os.environ.get("LOG_LEVELS", "")
+initRootLogger("ragflow_server", LOG_LEVELS)
 
 import os
 import signal

api/utils/log_utils.py

@@ -28,7 +28,7 @@ def get_project_base_directory():
     )
     return PROJECT_BASE
 
-def initRootLogger(logfile_basename: str, log_level: int = logging.INFO, log_format: str = "%(asctime)-15s %(levelname)-8s %(process)d %(message)s"):
+def initRootLogger(logfile_basename: str, log_levels: str, log_format: str = "%(asctime)-15s %(levelname)-8s %(process)d %(message)s"):
     logger = logging.getLogger()
     if logger.hasHandlers():
         return
@@ -36,19 +36,39 @@ def initRootLogger(logfile_basename: str, log_level: int = logging.INFO, log_for
     log_path = os.path.abspath(os.path.join(get_project_base_directory(), "logs", f"{logfile_basename}.log"))
 
     os.makedirs(os.path.dirname(log_path), exist_ok=True)
-    logger.setLevel(log_level)
     formatter = logging.Formatter(log_format)
 
     handler1 = RotatingFileHandler(log_path, maxBytes=10*1024*1024, backupCount=5)
-    handler1.setLevel(log_level)
     handler1.setFormatter(formatter)
     logger.addHandler(handler1)
 
     handler2 = logging.StreamHandler()
-    handler2.setLevel(log_level)
     handler2.setFormatter(formatter)
     logger.addHandler(handler2)
 
     logging.captureWarnings(True)
-    msg = f"{logfile_basename} log path: {log_path}"
+
+    pkg_levels = {}
+    for pkg_name_level in log_levels.split(","):
+        terms = pkg_name_level.split("=")
+        if len(terms)!= 2:
+            continue
+        pkg_name, pkg_level = terms[0], terms[1]
+        pkg_name = pkg_name.strip()
+        pkg_level = logging.getLevelName(pkg_level.strip().upper())
+        if not isinstance(pkg_level, int):
+            pkg_level = logging.INFO
+        pkg_levels[pkg_name] = logging.getLevelName(pkg_level)
+
+    for pkg_name in ['peewee', 'pdfminer']:
+        if pkg_name not in pkg_levels:
+            pkg_levels[pkg_name] = logging.getLevelName(logging.WARNING)
+    if 'root' not in pkg_levels:
+        pkg_levels['root'] = logging.getLevelName(logging.INFO)
+
+    for pkg_name, pkg_level in pkg_levels.items():
+        pkg_logger = logging.getLogger(pkg_name)
+        pkg_logger.setLevel(pkg_level)
+
+    msg = f"{logfile_basename} log path: {log_path}, log levels: {pkg_levels}"
     logger.info(msg)