Remove unused code (#3448)

### What problem does this PR solve?

1. Remove unused code.
2. Move some codes from settings to constants

### Type of change

- [x] Refactoring

---------

Signed-off-by: jinhai <haijin.chn@gmail.com>

api/apps/__init__.py

@@ -22,6 +22,7 @@ from flask import Blueprint, Flask
 from werkzeug.wrappers.request import Request
 from flask_cors import CORS
 from flasgger import Swagger
+from itsdangerous.url_safe import URLSafeTimedSerializer as Serializer
 
 from api.db import StatusEnum
 from api.db.db_models import close_connection
@@ -32,7 +33,7 @@ from flask_session import Session
 from flask_login import LoginManager
 from api import settings
 from api.utils.api_utils import server_error_response
-from itsdangerous.url_safe import URLSafeTimedSerializer as Serializer
+from api.constants import API_VERSION
 
 __all__ = ["app"]
 
@@ -119,7 +120,7 @@ def register_page(page_path):
     spec.loader.exec_module(page)
     page_name = getattr(page, "page_name", page_name)
     url_prefix = (
-        f"/api/{settings.API_VERSION}" if "/sdk/" in path else f"/{settings.API_VERSION}/{page_name}"
+        f"/api/{API_VERSION}" if "/sdk/" in path else f"/{API_VERSION}/{page_name}"
     )
 
     app.register_blueprint(page.manager, url_prefix=url_prefix)

api/constants.py

@@ -18,3 +18,8 @@ NAME_LENGTH_LIMIT = 2 ** 10
 IMG_BASE64_PREFIX = 'data:image/png;base64,'
 
 SERVICE_CONF = "service_conf.yaml"
+
+API_VERSION = "v1"
+RAG_FLOW_SERVICE_NAME = "ragflow"
+REQUEST_WAIT_SEC = 2
+REQUEST_MAX_WAIT_SEC = 300

api/settings.py

@@ -23,13 +23,10 @@ import rag.utils
 from rag.nlp import search
 from graphrag import search as kg_search
 from api.utils import get_base_config, decrypt_database_config
+from api.constants import RAG_FLOW_SERVICE_NAME
 
-API_VERSION = "v1"
-RAG_FLOW_SERVICE_NAME = "ragflow"
 LIGHTEN = int(os.environ.get('LIGHTEN', "0"))
 
-REQUEST_WAIT_SEC = 2
-REQUEST_MAX_WAIT_SEC = 300
 LLM = None
 LLM_FACTORY = None
 LLM_BASE_URL = None
@@ -173,15 +170,6 @@ def init_settings():
     retrievaler = search.Dealer(docStoreConn)
     kg_retrievaler = kg_search.KGSearch(docStoreConn)
 
-def get_host_ip():
-    global HOST_IP
-    return HOST_IP
-
-
-def get_host_port():
-    global HOST_PORT
-    return HOST_PORT
-
 
 class CustomEnum(Enum):
     @classmethod
@@ -201,16 +189,6 @@ class CustomEnum(Enum):
         return [member.name for member in cls.__members__.values()]
 
 
-class PythonDependenceName(CustomEnum):
-    Rag_Source_Code = "python"
-    Python_Env = "miniconda"
-
-
-class ModelStorage(CustomEnum):
-    REDIS = "redis"
-    MYSQL = "mysql"
-
-
 class RetCode(IntEnum, CustomEnum):
     SUCCESS = 0
     NOT_EFFECTIVE = 10

api/utils/api_utils.py

@@ -39,6 +39,7 @@ from api import settings
 from api import settings
 from api.utils import CustomJSONEncoder, get_uuid
 from api.utils import json_dumps
+from api.constants import REQUEST_WAIT_SEC, REQUEST_MAX_WAIT_SEC
 
 requests.models.complexjson.dumps = functools.partial(
     json.dumps, cls=CustomJSONEncoder)
@@ -87,7 +88,7 @@ def request(**kwargs):
 def get_exponential_backoff_interval(retries, full_jitter=False):
     """Calculate the exponential backoff wait time."""
     # Will be zero if factor equals 0
-    countdown = min(settings.REQUEST_MAX_WAIT_SEC, settings.REQUEST_WAIT_SEC * (2 ** retries))
+    countdown = min(REQUEST_MAX_WAIT_SEC, REQUEST_WAIT_SEC * (2 ** retries))
     # Full jitter according to
     # https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/
     if full_jitter: