Move migration logger initialization (#3170)

* Move migration logger initialization

* Update CHANGELOG

* Update license header

CHANGELOG.md

@@ -14,9 +14,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - A script to convert some kinds of DICOM files to regular images (<https://github.com/openvinotoolkit/cvat/pull/3095>)
 - Helm chart prototype (<https://github.com/openvinotoolkit/cvat/pull/3102>)
 
-
 ### Changed
 
+- Place of migration logger initialization (<https://github.com/openvinotoolkit/cvat/pull/3170>)
+
 ### Deprecated
 
 ### Removed

cvat/apps/engine/log.py

-# Copyright (C) 2018 Intel Corporation
+# Copyright (C) 2018-2021 Intel Corporation
 #
 # SPDX-License-Identifier: MIT
 
 import logging
+import sys
 from cvat.settings.base import LOGGING
 from .models import Job, Task, Project
 
@@ -24,6 +25,17 @@ def _get_job(jid):
     except Exception:
         raise Exception('{} key must be a job identifier'.format(jid))
 
+def get_logger(logger_name, log_file):
+    logger = logging.getLogger(name=logger_name)
+    logger.setLevel(logging.INFO)
+    file_handler = logging.FileHandler(log_file)
+    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+    file_handler.setFormatter(formatter)
+    logger.addHandler(file_handler)
+    logger.addHandler(logging.StreamHandler(sys.stdout))
+    logger.addHandler(logging.StreamHandler(sys.stderr))
+    return logger
+
 class ProjectLoggerStorage:
     def __init__(self):
         self._storage = dict()

cvat/apps/engine/migrations/0038_manifest.py

@@ -2,30 +2,20 @@
 
 import glob
 import itertools
-import logging
 import os
-import sys
 from re import search
 
 from django.conf import settings
 from django.db import migrations
 
+from cvat.apps.engine.log import get_logger
 from cvat.apps.engine.models import (DimensionType, StorageChoice,
                                      StorageMethodChoice)
 from cvat.apps.engine.media_extractors import get_mime
 from utils.dataset_manifest import ImageManifestManager, VideoManifestManager
 
-def get_logger():
-    migration = os.path.basename(__file__).split(".")[0]
-    logger = logging.getLogger(name=migration)
-    logger.setLevel(logging.INFO)
-    file_handler = logging.FileHandler(os.path.join(settings.MIGRATIONS_LOGS_ROOT, f"{migration}.log"))
-    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
-    file_handler.setFormatter(formatter)
-    logger.addHandler(file_handler)
-    logger.addHandler(logging.StreamHandler(sys.stdout))
-    logger.addHandler(logging.StreamHandler(sys.stderr))
-    return logger
+MIGRATION_NAME = os.path.splitext(os.path.basename(__file__))[0]
+MIGRATION_LOG = os.path.join(settings.MIGRATIONS_LOGS_ROOT, f"{MIGRATION_NAME}.log")
 
 def _get_query_set(apps):
     Data = apps.get_model("engine", "Data")
@@ -33,7 +23,7 @@ def _get_query_set(apps):
     return query_set
 
 def migrate2meta(apps, shema_editor):
-    logger = get_logger()
+    logger = get_logger(MIGRATION_NAME, MIGRATION_LOG)
     query_set = _get_query_set(apps)
     for db_data in query_set:
         try:
@@ -74,7 +64,7 @@ def migrate2meta(apps, shema_editor):
             logger.error(str(ex))
 
 def migrate2manifest(apps, shema_editor):
-    logger = get_logger()
+    logger = get_logger(MIGRATION_NAME, MIGRATION_LOG)
     logger.info('The data migration has been started for creating manifest`s files')
     query_set = _get_query_set(apps)
     logger.info('Need to update {} data objects'.format(len(query_set)))