Structlog and more fixes

pyproject.toml

@@ -9,7 +9,6 @@ license = "MIT"
 python = "^3.10"
 gunicorn = "*"
 uvicorn = "*"
-loguru = "*"
 pyenchant = "*"
 toml = "*"
 pylru = "*"
@@ -18,6 +17,7 @@ anyio = "*"
 sentry-sdk = "*"
 pydantic-settings = "*"
 fastapi = "*"
+structlog = "^23.2.0"
 
 [tool.poetry.group.dev.dependencies]
 httpx = "*"

whole_app/dictionaries/__init__.py

@@ -1,20 +1,21 @@
-from loguru import logger
+import typing
+
+import structlog
 
 from . import dummy as dummy_storage
 from . import file as file_storage
 from . import protocol
-from whole_app import misc_helpers
 from whole_app.settings import SETTINGS, StorageProviders
 
 
-misc_helpers.init_logger()
+LOGGER_OBJ: typing.Final = structlog.get_logger()
 
 
 def init_storage() -> None:
     if SETTINGS.dictionaries_storage_provider == StorageProviders.FILE:
         file_storage.init_storage()
     elif SETTINGS.dictionaries_storage_provider == StorageProviders.DUMMY:
-        logger.warning(
+        LOGGER_OBJ.warning(
             "Storage provider set to dummy mode. "
             "Currently all user dictionary requests will be thrown away. We worn you.",
         )

whole_app/misc_helpers.py

@@ -1,10 +1,22 @@
-import sys
+import logging
+import typing
 
-from loguru import logger
+import structlog
 
-from .settings import SETTINGS
+from whole_app.settings import SETTINGS
 
 
 def init_logger() -> None:
-    logger.remove()
-    logger.add(sys.stdout, serialize=SETTINGS.structured_logging)
+    our_processors: typing.Final[typing.Any] = [
+        structlog.contextvars.merge_contextvars,
+        structlog.processors.add_log_level,
+        structlog.processors.format_exc_info,
+        structlog.processors.TimeStamper(fmt="iso", utc=True),
+    ]
+    if SETTINGS.structured_logging:
+        our_processors.append(structlog.processors.JSONRenderer())
+    structlog.configure(
+        cache_logger_on_first_use=True,
+        wrapper_class=structlog.make_filtering_bound_logger(logging.INFO),
+        processors=our_processors,
+    )

whole_app/settings.py

@@ -3,11 +3,12 @@
 import typing
 
 import pydantic
+import structlog
 import toml
-from loguru import logger
 from pydantic_settings import BaseSettings
 
 
+LOGGER_OBJ: typing.Final = structlog.get_logger()
 PATH_TO_PYPROJECT: typing.Final = pathlib.Path(__file__).parent.parent / "pyproject.toml"
 AvailableLanguagesType = typing.Literal[
     "ru_RU",
@@ -24,7 +25,7 @@ def _warn_about_poor_lru_cache_size(
     possible_value: int,
 ) -> int:
     if int(possible_value) < 1:
-        logger.warning(
+        LOGGER_OBJ.warning(
             (
                 "You set cache size less then 1. In this case, "
                 "the cache size will be unlimited and polute your memory."
@@ -38,7 +39,7 @@ def _warn_about_empty_api_key(
     possible_value: str,
 ) -> str:
     if not possible_value:
-        logger.warning("You set empty API key. This is not recommended.")
+        LOGGER_OBJ.warning("You set empty API key. This is not recommended.")
     return possible_value
 
 
@@ -51,7 +52,7 @@ def _parse_version_from_local_file(
         )
         return pyproject_obj["tool"]["poetry"]["version"]
     except (toml.TomlDecodeError, KeyError, FileNotFoundError) as exc:
-        logger.warning(f"Cant parse version from pyproject. Trouble {exc}")
+        LOGGER_OBJ.warning("Cant parse version from pyproject. Trouble %s", exc)
     return default_value