bitbake: toaster: Monitoring - implement Django logging system

(Bitbake rev: 2efb146480ee46c0463d9edb71bf1c03ce15bcf2)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/toastermain/settings.py

@@ -9,6 +9,8 @@
 # Django settings for Toaster project.
 
 import os
+from pathlib import Path
+from toastermain.logs import LOGGING_SETTINGS
 
 DEBUG = True
 
@@ -186,7 +188,13 @@ TEMPLATES = [
                 'django.template.loaders.app_directories.Loader',
                 #'django.template.loaders.eggs.Loader',
             ],
-            'string_if_invalid': InvalidString("%s"),
+            # https://docs.djangoproject.com/en/4.2/ref/templates/api/#how-invalid-variables-are-handled
+            # Generally, string_if_invalid should only be enabled in order to debug
+            # a specific template problem, then cleared once debugging is complete.
+            # If you assign a value other than '' to string_if_invalid,
+            # you will experience rendering problems with these templates and sites.
+            #  'string_if_invalid': InvalidString("%s"),
+            'string_if_invalid': "",
             'debug': DEBUG,
         },
     },
@@ -242,6 +250,9 @@ INSTALLED_APPS = (
     'django.contrib.humanize',
     'bldcollector',
     'toastermain',
+
+    # 3rd-lib
+    "log_viewer",
 )
 
 
@@ -302,43 +313,22 @@ for t in os.walk(os.path.dirname(currentdir)):
 # the site admins on every HTTP 500 error when DEBUG=False.
 # See http://docs.djangoproject.com/en/dev/topics/logging for
 # more details on how to customize your logging configuration.
-LOGGING = {
-    'version': 1,
-    'disable_existing_loggers': False,
-    'filters': {
-        'require_debug_false': {
-            '()': 'django.utils.log.RequireDebugFalse'
-        }
-    },
-    'formatters': {
-        'datetime': {
-            'format': '%(asctime)s %(levelname)s %(message)s'
-        }
-    },
-    'handlers': {
-        'mail_admins': {
-            'level': 'ERROR',
-            'filters': ['require_debug_false'],
-            'class': 'django.utils.log.AdminEmailHandler'
-        },
-        'console': {
-            'level': 'DEBUG',
-            'class': 'logging.StreamHandler',
-            'formatter': 'datetime',
-        }
-    },
-    'loggers': {
-        'toaster' : {
-            'handlers': ['console'],
-            'level': 'DEBUG',
-        },
-        'django.request': {
-            'handlers': ['console'],
-            'level': 'WARN',
-            'propagate': True,
-        },
-    }
-}
+LOGGING = LOGGING_SETTINGS
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = Path(__file__).resolve(strict=True).parent.parent
+
+# LOG VIEWER
+# https://pypi.org/project/django-log-viewer/
+LOG_VIEWER_FILES_PATTERN = '*.log*'
+LOG_VIEWER_FILES_DIR = os.path.join(BASE_DIR, 'logs')
+LOG_VIEWER_PAGE_LENGTH = 25      # total log lines per-page
+LOG_VIEWER_MAX_READ_LINES = 100000  # total log lines will be read
+LOG_VIEWER_PATTERNS = ['INFO', 'DEBUG', 'WARNING', 'ERROR', 'CRITICAL']
+
+# Optionally you can set the next variables in order to customize the admin:
+LOG_VIEWER_FILE_LIST_TITLE = "Logs list"
+
 
 if DEBUG and SQL_DEBUG:
     LOGGING['loggers']['django.db.backends'] = {